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Patent Searching and Data


Title:
PROTECTION DEVICE, POWER SUPPLY DEVICE AND TERMINAL
Document Type and Number:
WIPO Patent Application WO/2018/107568
Kind Code:
A1
Abstract:
Provided are a protection device, a power supply device and a terminal. The protection device comprises a first over-voltage protection unit (11), a surge protection unit (12) and a second over-voltage protection unit (13). The first over-voltage protection unit, the surge protection unit, the second over-voltage protection unit and a unit to be protected (21) are successively connected, in ascending order of distance from a power source end VBUS, in parallel between the power source end VBUS and a ground end; the first over-voltage protection unit and the second over-voltage protection unit are respectively used for protecting, when a direct-current voltage loaded thereon is equal to or larger than a corresponding threshold value, a unit that is connected in parallel between the power source end VBUS and the ground end and has a distance further away from the power source end VBUS than themselves from being affected by the direct-current voltage; and the surge protection unit is used for protecting, when a surge occurs in a voltage or a current loaded thereon, a unit that is connected in parallel between the power source end VBUS and the ground end and has a distance further away from the power source end VBUS than itself, from being affected by the surge. The present invention solves the surge problem on a VBUS circuit, and can also solve the direct-current high-voltage problem on the VBUS circuit, thereby reducing a customer return rate, and improving the user experience.

Inventors:
TU, Rui (No.2 Mengxi Road, North of High-Tech Garden Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
GAO, Si (No.2 Mengxi Road, North of High-Tech Garden Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
Application Number:
CN2017/072571
Publication Date:
June 21, 2018
Filing Date:
January 25, 2017
Export Citation:
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Assignee:
YULONG COMPUTER TELECOMMUNICATION SCIENTIFIC (SHENZHEN) CO., LTD. (No.2 Mengxi Road, North of High-Tech Garden Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
International Classes:
H02H9/04
Foreign References:
CN200959512Y2007-10-10
CN202524073U2012-11-07
CN201584766U2010-09-15
KR20040021317A2004-03-10
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (SHANG Zhifeng, Room 506 Tower A Technology Fortune Center,No.8 Xueqing Road, Haidian District, Beijing 2, 100192, CN)
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