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High-voltage lithium battery pack and portable electrical device comprising same

A high-voltage lithium battery and electrical equipment technology, applied in battery circuit devices, arrangement of multiple synchronous batteries, charge equalization circuits, etc., can solve problems such as poor stability and poor portability, and reduce long-term consistency requirements and costs. Low, the effect of improving stability

Inactive Publication Date: 2016-02-24
SHENZHEN YINAMIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention lies in the poor portability and poor stability of electrical equipment such as electric welding machines or cutting machines in the prior art.

Method used

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  • High-voltage lithium battery pack and portable electrical device comprising same
  • High-voltage lithium battery pack and portable electrical device comprising same
  • High-voltage lithium battery pack and portable electrical device comprising same

Examples

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Effect test

Embodiment 1

[0048] This embodiment provides a high-voltage lithium battery pack for low-voltage charging / high-voltage discharging, such as figure 1 As shown, at least three low-voltage charging circuits 10 and at least three lithium battery packs 20 are included. The lithium battery pack may be, for example, a 13-series / 48V lithium battery pack, and the number of lithium battery packs is not limited to three, and more lithium battery packs are also feasible. For example, three 13-series / 48V lithium battery packs are connected in series, and the output high voltage DC voltage is DC120V-DC162V; or four 10-series / 36V lithium battery packs are connected in series, and the output high-voltage DC voltage is DC120V-DC168V; or Four 13-series / 48V lithium battery packs are connected in series, and the output high voltage DC voltage is DC160V-DC216V; or five 13-series / 48V lithium battery packs are connected in series, and the output high-voltage DC voltage is DC200V-DC270V. Therefore, for example, ...

Embodiment 2

[0065] This embodiment provides a portable electrical device, including the high-voltage lithium battery pack for low-voltage charging / high-voltage discharging in the above-mentioned embodiment 1. Preferably, the portable electric device is a cordless welding device, a cordless cutting device, or a mobile AC power supply. Preferably, the cordless welding equipment is a cordless inverter arc welding electric welding machine, a stud welding machine or a spot welding machine and the like. Preferably, the cordless cutting equipment is an air plasma cutting machine or the like.

[0066] When a high-voltage lithium battery pack is applied to a mobile AC power supply, for example, the mobile AC power supply includes a sequentially connected high-voltage lithium battery pack, a high-frequency BOOST boost circuit, and a power frequency inverter circuit. When the high-voltage lithium battery pack outputs DC When the voltage is high enough, the high-frequency BOOST booster circuit can b...

Embodiment 3

[0079] This embodiment provides a low-voltage charging / high-voltage discharging lithium battery-powered cordless inverter arc welding welding machine. The difference from Embodiment 2 is that the high-voltage lithium battery pack is composed of four 10-series / 36V lithium battery packs connected in series , the output high-voltage DC voltage is DC120V-DC168V, which can be used as an electric welding machine with an output capacity of 160A / 28V. Preferably, the output of the high-voltage lithium battery pack can be directly connected to the inverter circuit in the traditional AC110V inverter arc welding welding machine to form a 160A / 28V welding machine.

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Abstract

The invention discloses a high-voltage lithium battery pack and a portable electrical device comprising the same. The high-voltage lithium battery pack comprises at least three low-voltage charge circuits and at least three lithium battery packs, wherein the input end of each low-voltage charge circuit is connected with a low-voltage power supply source, and the output end of each low-voltage charge circuit is connected with one lithium battery pack for charging the lithium battery pack; and the at least three lithium battery packs are connected in series. The high-voltage lithium battery pack and the portable electrical device comprising the same have the advantages of good portability and good stability.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a high-voltage lithium battery pack and equipment including the high-voltage lithium battery pack, and in particular to a high-voltage lithium battery pack capable of low-voltage charging and high-voltage discharging. Background technique [0002] Currently widely used electric welding machines or cutting machines are generally corded devices, which are powered by an AC power supply, and generally have AC110V and AC220V power supplies. This kind of traditional AC110V and AC220V corded equipment technology is very mature, but there is a defect that it needs an external AC110V or AC220V AC power supply to work normally, so it is not convenient to use in occasions that do not have such an external AC power supply, such as newly built, simple The engineering construction environment, power outage environment, etc., are not portable. [0003] For this reason, some improved ...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/00H02J7/0018H02J7/0016
Inventor 谢军
Owner SHENZHEN YINAMIC TECH CO LTD
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