US 2023/0420966 A1 · BATTERY PACK MASTER-SLAVE DYNAMIC PARALLEL OPERATION METHOD, POWERED DEVICE, AND STORAGE MEDIUM

Abstract

A master-slave dynamic paralleling method for battery packs, includes: during discharging, discharging a battery pack with the highest power, and when a voltage difference between battery packs reaches a preset threshold range and no fault protection state is triggered, parallel-connecting a battery pack to the lowest power for discharging, and performing paralleling mode switching; and during charging, charging a battery pack with the lowest voltage, and when voltages of all battery packs are consistent and no fault protection state is triggered, parallel-connecting another battery pack for charging, and performing paralleling mode switching.

Claims16

Dependent claims

A master-slave dynamic paralleling method for battery packs, applied to a battery paralleling system, wherein the paralleling system comprises N battery packs, N is greater than or equal to 2, and the method comprises:

when M battery packs in the battery paralleling system are in discharging state, and N-M battery packs in the N battery packs are in idle state, collecting first operating parameters of each battery pack in the battery paralleling system, wherein the first operating parameters comprise a voltage and fault protection state of each battery pack, and M is greater than or equal to 1 and less than or equal to N;
and
based on respective first operating parameters of the N-M battery packs and voltages of the M battery packs, controlling the battery packs in idle state to be parallel-connected to the M battery packs.

A master-slave dynamic paralleling method for battery packs, applied to a battery paralleling system, wherein the paralleling system comprises J battery packs, J is greater than or equal to 2, and the method comprises:

when K battery packs in the battery paralleling system are in charging state, and J-K battery packs in the J battery packs are in idle state, collecting second operating parameters of each battery pack in the battery paralleling system, wherein the second operating parameters comprise voltage and fault protection state of each battery pack, and K is greater than or equal to 1 and less than or equal to J;
and
based on the respective second operating parameters of the J-K battery packs and the voltages of the K battery packs, controlling the battery packs in idle state to be parallel-connected to the K battery packs.

Dependencies are inferred from the claim text.

Facts

Application

18/340,210Filed 23 Jun 2023

Priority

CN 202011553338.124 Dec 2020

Published

28 Dec 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

B60L 58/21
Of two or more battery modules: having the same nominal voltage
H02J 7/865
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: battery or charger load switching, e.g.…
B60L 3/0046
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to electric energy…
H01M 10/441
Methods for charging or discharging: for several batteries or cells simultaneously or sequentially

Battery pack master-slave dynamic parallel operation method, powered device, and storage medium

Life of this patent

Battery pack master-slave dynamic parallel operation method, powered device, and storage medium

Life of this patent

Abstract

Claims16