The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10631388 B1

Date of Patent:

Apr. 21, 2020

Filed:

Sep. 27, 2018

Power supply device

Applicant:

Cosmo Lighting Inc., Walnut, CA (US);

Inventor:

Nai-Chen Tsai, New Taipei, TW;

Assignee:

COSMO LIGHTING INC., Walnut, CA (US);

Attorney:

Li & Cai Intellectual Property (USA) Office

Primary Examiner:

Lisa S Park

Int. Cl.

CPC ...

H01M 2/10 (2006.01); H02J 7/00 (2006.01); G06F 1/26 (2006.01); H05B 45/48 (2020.01); B29C 39/10 (2006.01); B29C 33/12 (2006.01); F21K 9/90 (2016.01); H05B 45/00 (2020.01); H05B 45/10 (2020.01); H05B 45/40 (2020.01); F21S 4/10 (2016.01); B29C 33/42 (2006.01); F21V 17/04 (2006.01); F21V 19/00 (2006.01); F21V 23/00 (2015.01); F21S 4/26 (2016.01); B65H 54/14 (2006.01); H01L 21/67 (2006.01); H01L 25/075 (2006.01); H01L 33/52 (2010.01); H01L 33/62 (2010.01); H01L 25/13 (2006.01); H01L 33/00 (2010.01); H02G 1/12 (2006.01); F21Y 115/10 (2016.01); B29L 31/00 (2006.01); F21Y 103/10 (2016.01);

U.S. Cl.

CPC ...

H05B 45/48 (2020.01); B29C 33/12 (2013.01); B29C 33/42 (2013.01); B29C 39/10 (2013.01); B65H 54/14 (2013.01); F21K 9/90 (2013.01); F21S 4/10 (2016.01); F21S 4/26 (2016.01); F21V 17/04 (2013.01); F21V 19/001 (2013.01); F21V 19/0025 (2013.01); F21V 23/001 (2013.01); G06F 1/26 (2013.01); H01L 21/67144 (2013.01); H01L 21/67259 (2013.01); H01L 25/0753 (2013.01); H01L 25/13 (2013.01); H01L 33/00 (2013.01); H01L 33/52 (2013.01); H01L 33/62 (2013.01); H01M 2/1016 (2013.01); H02G 1/1256 (2013.01); H02J 7/007184 (2020.01); H05B 45/00 (2020.01); H05B 45/10 (2020.01); H05B 45/40 (2020.01); B29L 2031/747 (2013.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08); H01L 2933/005 (2013.01); H01L 2933/0033 (2013.01); H01L 2933/0066 (2013.01);

Abstract

A power supply device is provided, which includes a plurality of battery packs and a plurality of unidirectional conductive elements. The plurality of battery packs are connected in parallel with each other and disposed toward the same direction. The unidirectional conductive elements are connected in serial to the battery packs, respectively. A positive pin of each of the unidirectional conductive elements is connected in serial to a positive terminal of the corresponding battery pack, and a negative pin of each of the unidirectional conductive elements is connected in parallel to negative pins of other unidirectional conductive elements. Therefore, the present disclosure is capable of preventing the battery packs having relatively lower voltages from being charged by the battery packs having relatively higher voltages, thereby prolonging lifetimes of batteries, and avoid from affecting power to be supplied to a power receiving circuit from the battery packs.

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