Electronic apparatus and method with battery state estimation

Patent metadata

Field	Value
Publication number	US-2024426934-A1
Application number	US-202318532689-A
Country	US
Kind code	A1
Filing date	Dec 7, 2023
Priority date	Dec 22, 2022
Publication date	Dec 26, 2024
Grant date	—

Abstract

An electronic apparatus includes: a battery; a first calculator configured to obtain sensing data of the battery using a sensor, determine first state information of the battery using the obtained sensing data and a first battery model, and preprocess the obtained sensing data; and a second calculator configured to receive the preprocessed sensing data from the first calculator, determine an aging state of the battery using a second battery model and the received sensing data, update a parameter of the first battery model based on the determined aging state, and transmit the updated parameter to the first calculator.

First claim

What is claimed is:

1 . An electronic apparatus comprising:
a battery; a first calculator configured to obtain sensing data of the battery using a sensor, determine first state information of the battery using the obtained sensing data and a first battery model, and preprocess the obtained sensing data; and a second calculator configured to receive the preprocessed sensing data from the first calculator, determine an aging state of the battery using a second battery model and the received sensing data, update a parameter of the first battery model based on the determined aging state, and transmit the updated parameter to the first calculator, wherein, in response to receiving the updated parameter from the second calculator, the first calculator is configured to apply the updated parameter to the first battery model such that the determined aging state is reflected in the first battery model.

2 . The electronic apparatus of claim 1 , wherein
the first calculator is configured to:
for the preprocessing of the obtained sensing data, obtain measurement data of a voltage of the battery;
for the storing of the preprocessed sensing data, store the measurement data in the first memory of the first calculator; and
transmit the measurement data to the second calculator in response to a transmission period being reached, and
the second calculator is configured to, for the determining of the state information, obtain estimation data of a voltage of the battery using the second battery model, estimate an aging variation of the second battery based on the estimation data and the measurement data, and update an aging parameter of the battery model using the aging variation.

3 . The electronic apparatus of claim 2 , wherein
the second calculator is configured to store the updated aging parameter of the second battery model in a second memory of the second calculator and transmit the updated aging parameter stored in the second memory to the first calculator in response to detecting that the electronic apparatus enters a power-off state, and the first calculator is configured to store the updated aging parameter received from the second calculator in the first memory of the first calculator.

4 . The electronic apparatus of claim 2 , wherein, for the estimating of the aging variation, the second calculator is configured to:
determine a resistance increase using a variation in the estimation data, a variation in the measurement data, and a current variation; and determine, as the aging variation, a variation in an anodic solid electrolyte interphase (SEI) resistance based on the resistance increase.

5 . The electronic apparatus of claim 2 , wherein the aging parameter comprises any one or any combination of any two or more of an anodic solid electrolyte interphase (SEI) resistance, a capacity of a cathode active material, and an electrode balance shift of the battery.

6 . The electronic apparatus of claim 1 , wherein the second calculator is configured to apply, in response to updating an aging parameter of the second battery model, the updated aging parameter of the second battery model to the second battery model, generate basic simulation data for preset charging currents using the second battery model to which the updated aging parameter is applied, generate an initial look-up table (LUT) for the charging currents and preset battery voltage limits based on the basic simulation data, generate a modified LUT by adjusting one or more initial charging limit conditions of the initial LUT in response to the initial LUT failing to satisfy a preset condition, determine a final LUT based on the modified LUT in response to the modified LUT satisfying the preset condition, and control charging of the battery based on the determined final LUT.

7 . The electronic apparatus of claim 6 , wherein
the second calculator is configured to transmit the determined final LUT to the first calculator, and the first calculator is configured to store the received determined final LUT in the first memory of the first calculator.

8 . The electronic apparatus of claim 1 , wherein
the first calculator is configured to transmit the determined first state information to the second calculator, and the second calculator is configured to control a display such that the received first state information is displayed on the display.

9 . The electronic apparatus of claim 1 , wherein the first state information comprises state of charge (SOC) information of the battery.

10 . The electronic apparatus of claim 1 , wherein
the first calculator is comprised in a power management integrated circuit, and the second calculator is comprised in an application processor.

11 . An electronic apparatus comprising:
a battery; a first calculator configured to obtain sensing data of the battery using a sensor, preprocess the obtained sensing data, and store the preprocessed sensing data in a first memory; and a second calculator configured to receive the sensing data stored in the first memory from the first calculator, determine state information of the battery using a battery model and the received sensing data, and control a display such that the determined state information is displayed on the display.

12 . The electronic apparatus of claim 11 , wherein
the power management integrated circuit is configured to: for the preprocessing of the obtained sensing data, obtain measurement data of a voltage of the battery; for the storing of the preprocessed sensing data, store the measurement data in the first memory; and transmit the measurement data to the processor in response to a transmission period being reached, and the second calculator is configured to, for the determining of the state information, obtain estimation data of the voltage of the battery using the battery model, estimate an aging variation of the battery based on the estimation data and the measurement data, and update an aging parameter of the battery model using the aging variation.

13 . The electronic apparatus of claim 12 , wherein
the second calculator is configured to store the updated aging parameter in a second memory of the second calculator and transmit the updated aging parameter stored in the second memory to the first calculator in response to detecting that the electronic apparatus enters a power-off state, and the first calculator is configured to store the updated aging parameter received from the second calculator in the first memory.

14 . The electronic apparatus of claim 12 , wherein, for the estimating of the aging variation, the processor is configured to:
determine a resistance increase using a variation in the estimation data, a variation in the measurement data, and a current variation; and determine, as the aging variation, a variation in an anodic solid electrolyte interphase (SEI) resistance based on the resistance increase.

15 . The electronic apparatus of claim 12 , wherein the aging parameter comprises any one or any combination of any two or more of an anodic solid electrolyte interphase (SEI) resistance, a capacity of a cathode active material, and an electrode balance shift of the battery.

16 . The electronic apparatus of claim 11 , wherein
the second calculator is configured to apply, in response to updating an aging parameter of the battery model, the updated aging parameter to the battery model, generate a plurality of pieces of basic simulation data for each of preset charging currents using the battery model to which the updated aging parameter is applied, generate an initial look-up tab

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Jinho
• Moon Sangbin
• Song Tae Won
• Kim Youngjae
• Park Hyukrae
• Heo Jungwook
• Huang Terrance Christopher

Classifications

• H02J7/82

  Control of state of charge [SOC] · CPC title

• H02J7/84

  Control of state of health [SOH] · CPC title

• G01R31/367 Primary

  Software therefor, e.g. for battery testing using modelling or look-up tables · CPC title

• G01R31/388

  involving voltage measurements · CPC title

• G01R31/389

  Measuring internal impedance, internal conductance or related variables · CPC title