WO-2026095470-A1 - BATTERY DETERMINATION SYSTEM, BATTERY DETERMINATION DEVICE, AND OPERATION METHOD OF BATTERY DETERMINATION SYSTEM

WO2026095470A1WO 2026095470 A1WO2026095470 A1WO 2026095470A1WO-2026095470-A1

Abstract

A battery determination system according to an embodiment of the present disclosure may comprise: a battery charging and discharging device that provides a constant pressure to one or more batteries, performs at least one charge-discharge cycle to determine whether the one or more batteries are abnormal, and detects displacement caused by charging or discharging of the one or more batteries; and a battery determination device that receives displacement data from the battery charging and discharging device, generates calculation data on the basis of the displacement data, and determines whether the one or more batteries are abnormal on the basis of the calculation data.

Inventors

KIM, HYEONJEONG
Jang, Jisoo
MINN, Jeonga
LEE, JINAH
KIM, Riyul
LIM, Youngjun
YANG, WONJU
MOON, Jinhee

Assignees

삼성에스디아이 주식회사

Dates

Publication Date: 20260507
Application Date: 20251021
Priority Date: 20241031

Claims (20)

A battery charging and discharging device that provides a static pressure environment to one or more batteries, performs at least one charge-discharge cycle to determine whether the one or more batteries are abnormal, and detects displacement resulting from the charging or discharging of the one or more batteries; and A battery determination system comprising a battery determination device that receives displacement data from the battery charging/discharging device, generates calculation data based on the displacement data, and determines whether one or more batteries are abnormal based on the calculation data.
In paragraph 1, The above-mentioned output data is a battery determination system comprising a metal generation amount corresponding to the charging of one or more batteries and a metal reduction amount corresponding to the discharging of one or more batteries.
In paragraph 2, A battery determination system including charge-discharge efficiency determined based on the ratio of the metal production amount and the metal reduction amount, as described above.
In paragraph 2, The above-mentioned output data is a battery determination system including an irreversible metal generation amount determined by the difference between the metal generation amount and the metal reduction amount in the first charge-discharge cycle.
In paragraph 2, The above battery determination device is a battery determination system that determines whether a battery is abnormal based on the ratio of the metal generation amount of each of the plurality of batteries to the average metal generation amount of the plurality of batteries.
In paragraph 2, The above battery determination device is a battery determination system that determines the state of health (SOH) of one or more batteries based on the change trend of the amount of metal generated in the first charge-discharge cycle and the amount of metal generated in the nth (n is an integer greater than 1) charge-discharge cycle.
In paragraph 6, The above battery determination device is a battery determination system that determines the state of one or more batteries as abnormal based on the fact that the SOH is smaller than a preset threshold value.
In paragraph 1, The battery charging/discharging device detects multiple displacements at each of the multiple displacement detection points for each of the one or more batteries, and The above battery determination device is a battery determination system that determines whether each of one or more batteries is abnormal based on the plurality of displacements.
In paragraph 1, The battery charging/discharging device comprises a plurality of partitions, one or more battery storage spaces formed between the plurality of partitions, a plurality of connection terminals electrically connected to the one or more batteries, a plurality of pressure sensors disposed between each of the plurality of partitions and the battery storage spaces, a pressure regulator that applies pressure to one side of a first partition among the plurality of partitions based on a pressure control signal, and one or more displacement sensors that detect a displacement corresponding to each of the plurality of partitions.
In Paragraph 9, The above pressure regulator is a battery determination system comprising at least one of a servo motor or a spring pad.
In Paragraph 9, The above displacement sensor is a battery determination system comprising at least one of an LVDT (linear variable displacement transducer) or a laser displacement sensor.
In Paragraph 9, A battery determination system in which a second outer partition wall positioned opposite the first partition wall among the plurality of partition walls is fixed, and the remaining partition walls are controlled to be movable.
A data receiving unit that receives displacement data including displacement of one or more batteries during at least one charge-discharge cycle performed in a constant pressure environment; A calculation unit that generates calculated data based on the above displacement data; A battery determination device comprising a determination unit that determines whether one or more of the batteries are abnormal based on the above-mentioned output data.
In Paragraph 13, The above-mentioned output data is a battery determination device comprising a metal generation amount corresponding to the charging of the one or more batteries and a metal reduction amount corresponding to the discharging of the one or more batteries.
In Paragraph 14, The above calculation unit generates a charge-discharge efficiency based on the ratio of the metal generation amount and the metal reduction amount, and The above-mentioned judgment unit is a battery judgment device that determines whether one or more of the batteries are abnormal based on the charge-discharge efficiency.
In Paragraph 14, The above operation unit further generates an irreversible metal generation amount based on the difference between the metal generation amount and the metal reduction amount in the first charge-discharge cycle, and The above-mentioned judgment unit is a battery judgment device that determines whether one or more of the batteries are abnormal based on the amount of irreversible metal generated.
A step of providing a constant pressure environment to one or more batteries by means of a battery charging/discharging device; A step of performing at least one charge-discharge cycle on one or more batteries by means of a battery charge-discharge device; A step of detecting the displacement of one or more batteries by means of a battery charging/discharging device; A step of generating calculated data based on the displacement of one or more batteries by a battery determination device; and A method of operating a battery determination system comprising the step of determining whether one or more batteries are abnormal based on the calculated data by a battery determination device.
In Paragraph 17, The step of generating the above-mentioned output data is, A step of calculating a metal production amount corresponding to the charging of one or more of the above batteries; and A method of operating a battery determination system comprising the step of calculating a metal reduction amount corresponding to the discharge of one or more of the above batteries.
In Paragraph 18, The step of generating the above-mentioned output data is, The method includes the step of generating a charge-discharge efficiency based on the ratio of the metal generation amount and the metal reduction amount, The step of determining whether the above one or more batteries are abnormal is, A method of operating a battery determination system comprising the step of determining whether one or more batteries are abnormal based on the charge-discharge efficiency.
In Paragraph 18, The step of generating the above-mentioned output data is, Further calculate the irreversible metal generation amount based on the difference between the metal generation amount and the metal loss amount in the first charge-discharge cycle, and The step of determining whether one or more of the above batteries are abnormal is: A method of operation of a battery determination system for determining whether one or more batteries are abnormal based on the amount of irreversible metal generated.

Description

Battery determination system, battery determination device, and method of operation of the battery determination system The present disclosure relates to a battery determination system, and more specifically, to a battery determination system for determining whether a battery including an all-solid-state battery is abnormal, a battery determination device, and a method of operating the battery determination system. After assembling a battery including an all-solid-state battery, a charge-discharge cycle is performed, and the characteristics of the battery are evaluated based on the charge and discharge. Before assembly, abnormalities can be determined by checking the condition of the electrode plates included in the all-solid-state battery; however, after assembly, abnormalities are determined based on the battery's capacity or impedance calculated from the voltage and current during the charge-discharge cycle. However, this is limited to considering the actual condition of the metal layer of the all-solid-state battery included in the battery. A battery determination system capable of determining whether a battery is abnormal by considering the condition of the metal layer of an all-solid-state battery is required. FIG. 1 is a block diagram showing a battery performance evaluation system according to an embodiment of the present disclosure. FIGS. 2a to 2c are cross-sectional views of an all-solid-state battery according to embodiments of the present disclosure. FIG. 3 is a block diagram showing a battery determination system according to an embodiment of the present disclosure. FIG. 4 is a drawing showing an example of a battery charging and discharging device according to an embodiment of the present disclosure. FIG. 5 is a diagram showing an example of the operation of a battery charging and discharging device according to an embodiment of the present disclosure. FIG. 6 is a diagram exemplarily showing the metal yield calculated per charge-discharge cycle according to an embodiment of the present disclosure. FIG. 7 is a diagram exemplarily showing a displacement detection point of a battery charging and discharging device according to an embodiment of the present disclosure. FIG. 8 is a diagram showing the distribution of displacements detected at each of the displacement detection points of the batteries according to an embodiment of the present disclosure. FIG. 9 is a flowchart illustrating the operation method of a battery determination system according to an embodiment of the present disclosure. FIG. 10 is a drawing showing an example of the operation of a battery charging and discharging device according to an embodiment of the present disclosure. FIG. 11 is a diagram exemplarily showing the pressure detected per charge-discharge cycle according to an embodiment of the present disclosure. FIG. 12 is a diagram exemplarily showing a pressure sensing point according to an embodiment of the present disclosure. FIG. 13 is a diagram showing the distribution of pressure detected at each of the pressure sensing points of the batteries according to an embodiment of the present disclosure. FIG. 14 is a flowchart illustrating the operation method of a battery determination system according to an embodiment of the present disclosure. FIG. 15 is a block diagram showing a battery system according to an embodiment of the present disclosure. FIG. 16 is a block diagram showing a battery management device according to an embodiment of the present disclosure. FIG. 17 is a drawing showing an example of a battery device according to an embodiment of the present disclosure. FIG. 18 is a drawing showing another example of a battery device according to an embodiment of the present disclosure. FIG. 19 is a drawing exemplarily showing a displacement detection point of a battery device according to an embodiment of the present disclosure. FIG. 20 is a flowchart illustrating the operation method of a battery management device according to an embodiment of the present disclosure. FIG. 21 is a graph showing the rate of change of displacement per hour calculated according to an embodiment of the present disclosure. FIGS. 22a and 22b are graphs showing a comparison of the ratio of the displacement reduction amount to the calculated displacement increase amount according to an embodiment of the present disclosure and the Coulomb efficiency. FIG. 23 is a drawing showing an example of a battery device according to an embodiment of the present disclosure. FIG. 24 is a drawing showing an example of a battery device according to an embodiment of the present disclosure. FIG. 25 is a flowchart illustrating the operation method of a battery management device according to an embodiment of the present disclosure. In order to fully understand the structure and effects of the present invention, preferred embodiments of the present invention are described with reference to the attached drawings. However, the present invention is not limited to