Mulltifunctional vehicle charger and charging process of the same

• US 20100225269A1
• Filed: 03/03/2009
• Published: 09/09/2010
• Est. Priority Date: 01/23/2009
• Status: Active Grant

• Current Assignee: Yun-Zhao Liu
• Original Assignee: Yun-Zhao Liu
• Inventors: Liu, Yun-Zhao
• Granted Patent: US 8,148,940 B2
• Time in Patent Office: Days
• US Class Current: 320/107
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01R 27/02 for simultaneous co-operation with two or more dissimilar counterparts
• CPC Class Codes: H01R 31/065 with built-in electric apparatus
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0071 with a programmable schedule
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

The present invention relates to a multi-functional vehicle charger and the charging process of the same. The vehicle charger includes a power plug corresponding to a vehicle power outlet on one end, a power terminal connected with the vehicle charger by a wire and a USB port. The power terminal is connected with a charge monitor circuit for Li-ion batteries in the vehicle charger and the USB port is connected with the power plug. Thus the vehicle charger can be connected with various electrical appliances for charging not only by insertion of the power terminal on the wire into a socket of a Li-ion battery. But also by a connecting wire that connects the USB port to the electric appliances with USB functionality and having charge monitor circuit as well as a Li-ion batteries, the vehicle charger supplies power to the electrical appliances. Thereby, power is supplied by various output ends when the vehicle charger is inserted into a power outlet in vehicles. Therefore, no matter the Li-ion batteries with sockets or electrical appliances with USB functionality can be supplied with power by the vehicle charger. The practical values of the vehicle charger are increased in use.

Claims

1. A multifunctional vehicle charger comprising:

a power plug corresponding to a power outlet in vehicles disposed on one end,

a wire connected with a power terminal;

a lithium ion(Li-ion) battery corresponding to the power terminal and having a socket being plugged in by the power terminal for charging,

a Universal Serial Bus (USB) port connected with electrical appliances that are disposed with charge monitor circuits and Li-ion batteries by a corresponding USB connecting wire;

wherein the multifunctional vehicle charger is disposed with a charge monitor circuit that connects with the wire with the power terminal and the USB port is directly connected with the power plug.

2. The charging process for the multifunctional vehicle charger, in which a charge monitor circuit is installed, comprising the steps of:

detecting voltage of the Li-ion battery the vehicle charger connected with;

for the forced discharge Li-ion battery without output voltage, the Li-ion battery is charged in a low-current and fast pulse mode;

when the voltage of the Li-ion battery is lower than a preset voltage, a low current that is one tenth of the Li-ion battery capacity is used to charge the Li-ion battery in a constant-current float charging mode;

when the voltage of the Li-ion battery is increased over the preset voltage, a low current that is one-half of the Li-ion battery capacity is used to charge the Li-ion battery in a constant-current equalizing charging mode;

when the voltage of the Li-ion battery is increased to rated voltage, start using a constant voltage that is the rated voltage of the Li-ion battery to charge the Li-ion battery in a constant voltage charging mode; and

the charging current gradually fails to a low value;

when the charging current is lower than the low current that is one tenth of the Li-ion battery capacity, stop charging and the charging process is ended;

when the voltage of the Li-ion battery is lower than the rated voltage thereof, the charging process is initiated and repeated again.