US 2024/0198854 A1 · Method for Balancing Parallel Battery Packs Using Pre-Charging Circuit and Apparatus and System for the Same

Abstract

Provided is a method in an electricity-driven apparatus to be driven by receiving power through a plurality of battery packs in a parallel type. The method includes detecting a state of charge (SOC) of each of the plurality of battery packs, calculating a voltage difference between the plurality of battery packs based on the detected SOC, and performing battery pack balancing based on the calculated voltage difference exceeding a threshold value. The battery pack balancing is performed by a pre-charging circuit including a balancing relay.

Claims20

Dependent claims

A method comprising:

detecting a state of charge (SOC) of each of a plurality of battery packs that provide power to an electricity-driven apparatus, wherein the plurality of battery packs are connected in parallel;
calculating, based on the detected SOC, a voltage difference between the plurality of battery packs;
and
performing, by one more or pre-charging circuits comprising a balancing relay, battery pack balancing, based on the calculated voltage difference exceeding a threshold value.

1 more element

An electricity-driven apparatus comprising:

a plurality of battery packs connected to each other in parallel;
a plurality of inverters connected to motors driven by power provided by the plurality of battery packs;
one or more pre-charging circuits comprising a balancing relay and interposed between the plurality of battery packs and the plurality of inverters;
and
a battery management system configured to control the one or more pre-charging circuits to perform battery pack balancing,
wherein the battery management system is further configured to control the balancing relay to perform the battery pack balancing.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/200,209Filed 22 May 2023

Priority

KR 10-2022-017752716 Dec 2022

Published

20 Jun 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification23 codes

B60L 58/22
Of two or more battery modules: balancing the charge of battery modules
H02J 7/54
For charge balancing, e.g. equalisation of charge between batteries: passive balancing, e.g. using resistors or parallel MOSFETs
B60L 53/20
Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of…:…
B60L 58/12
For monitoring or controlling batteries: responding to state of charge [SoC]

Method for Balancing Parallel Battery Packs Using Pre-Charging Circuit and Apparatus and System for the Same

Life of this patent

Method for Balancing Parallel Battery Packs Using Pre-Charging Circuit and Apparatus and System for the Same

Life of this patent

Abstract

Claims20