Method for adjusting working current of lithium electric welding machine

A technology of working current and adjustment method, used in arc welding equipment, manufacturing tools, welding equipment, etc., can solve the lack of output force, the output performance can only be controlled within the limited range of lithium batteries, and the output power difference is large, etc. problems, to achieve the effect of increasing battery life, improving welding work efficiency, and improving welding process performance

Active Publication Date: 2020-07-10
NANJING LEGENDALE ENERGY STORAGE CO LTD
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Problems solved by technology

Due to the limitation of the main body performance or its own battery management system (BMS), the maximum peak current and power output of lithium batteries have limited requirements (the full charge voltage and discharge cut-off voltage of lithium batteries have a large difference, so the output power is also limited. The output performance of the matching welding machine can only be controlled within the limited range of the lithium battery, so the same model of welding machine designed on the same principle, the lithium electric welding machine feels somewhat lacking in output than the commercial electric welding machine

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  • Method for adjusting working current of lithium electric welding machine
  • Method for adjusting working current of lithium electric welding machine
  • Method for adjusting working current of lithium electric welding machine

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Embodiment Construction

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0014] This solution is proposed for the lithium electric welding machine to make better use of the performance of the battery, making full use of the peak discharge and continuous discharge performance of the lithium battery system. The current limiting / boundary current formula is Iout=Ubat*Ibatmax*η / Uf.

[0015] In the formula: Iout—the maximum current allowed to be output;

[0016] Ubat—the battery output voltage at the same time (for lithium batteries, ...

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Abstract

The invention discloses a method for adjusting working current of a lithium electric welding machine. The method comprises the following steps of 1, sampling welding voltage and current and sampling power supply voltage and current of a lithium battery; 2, according to a current-limiting/boundary current formula Iout = Ubat * Ibatmax * eta/Uf, calculating and judging an electric arc welding stateof the welding machine in a working process, and dynamically adjusting a welding current; and 3, outputting the adjusted welding current. Peak discharge and continuous discharge performance of a lithium battery system are fully utilized, a current-limiting/boundary current formula Iout = Ubat * Ibatmax * eta/Uf is suitable for a normal welding state, a short-circuit state and a long-arc state in the welding process, the welding current of a welding machine is not limited to a traditional cross-flow design mode, and the output current in a wider range can be obtained, so that the welding process performance is improved, the welding operation efficiency is improved, and the endurance is increased.

Description

technical field [0001] The invention relates to the field of electric welding machines, in particular to a method for adjusting the working current of lithium electric welding machines. Background technique [0002] The electric welding machine with lithium battery as the power source brings great convenience in welding construction in places without power electricity (field construction) or inconvenient power electricity connection, flexible movement, no power supply cable, no noise of generator welding machine, Liked by many users. Due to the limitation of the performance of the lithium battery or its own battery management system (BMS), the maximum peak current and power output of the lithium battery have limited requirements (the full charge voltage and discharge cut-off voltage of the lithium battery are quite different, so the output power is also limited. The output performance of the matching welding machine can only be controlled within the limited range of the lit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/10
CPCB23K9/1043
Inventor 张广智范震
Owner NANJING LEGENDALE ENERGY STORAGE CO LTD
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