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

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

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1

[0048] This embodiment provides a low-voltage charging / high-voltage discharging high-voltage lithium battery pack, 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-string / 48V lithium battery pack, the number of lithium battery packs is not limited to three, and more lithium battery packs are also feasible. For example, three 13-string / 48V lithium battery packs are connected in series, and the output high-voltage DC voltage is DC120V-DC162V; or four 10-string / 36V lithium battery packs are connected in series, and the output high-voltage DC voltage is DC120V-DC168V; or Four 13-string / 48V lithium battery packs are connected in series, and the output high-voltage DC voltage is DC160V-DC216V; or five 13-string / 48V lithium battery packs are connected in series, and the output high-voltage DC voltage is DC200V-DC270V. Thus, for exampl...

Example Embodiment

[0064] Example 2

[0065] This embodiment provides a portable electrical equipment including the low-voltage charging / high-voltage discharging high-voltage lithium battery pack of the above-mentioned embodiment 1. Preferably, the portable electrical equipment is a cordless welding equipment, a cordless cutting equipment 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. Preferably, the cordless cutting equipment is an air plasma cutting machine or the like.

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

Example Embodiment

[0078] Example 3

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

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PUM

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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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