# US 2014/0191708 A1 · Charging device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191708 A1 - Document ID: US20140191708A1 - Status: Published application - Kind: A1 - Application number: 14/151,726 - Filed: 2014-01-09 - Published: 2014-07-10 - Earliest claimed: 2013-01-10 - Assignees: Hon Hai Precision Industry Co., Ltd. - Applicants: Hon Hai Precision Industry Co., Ltd. - Inventors: JUNG-YU HUANG; KUO-WEI SU; JIN-YUAN TENG - Web page: https://patentgrep.com/patent/US20140191708A1 ## CPC - H02J 7/70: characterised by the mechanical construction - H02J 7/02: for charging batteries from AC mains by converters - H02J 7/663: {using battery or load disconnect circuits (H02J9/002 takes precedence)} - H02J 9/005: {using a power saving mode (for copiers G03G15/5004)} - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A charging device includes a power converting unit and a power output unit. The power converting unit comprises a first conductive pin, a second conductive pin, and a converter. The first conductive pin and the second conductive pin are electrically connected to an alternating current (AC) power. The converter converts the AC power to a direct current (DC) power and outputs the DC power. The power output unit is electrically connected to the converter via a number of cables, and outputs the DC power to an electronic device. The power output unit comprises a first switch and a second switch. When the electronic device separates from the power output unit, the first switch controls the converter to stop receiving the AC power. When the electronic device is completely charged, the second switch controls the converter to stop receiving the AC power. ## Claims ### Claim 1 A charging device, comprising: a power converting unit comprising a first conductive pin, a second conductive pin, and a converter, wherein when the first conductive pin and the second conductive pin are electrically connected to an alternating current (AC) power, the converter converts the AC power to a direct current (DC) power and outputs the DC power; and a power output unit electrically connected to the converter and outputting the DC power to an electronic device; wherein the converter comprises a first input terminal and a second input terminal, the first input terminal is electrically connected to the first conductive pin, the second input terminal is selectively and electrically connected to or disconnected from the second conductive pin under control of the power output unit. ### Claim 2 (depends on 1) The charging device of claim 1, wherein the power output unit comprises a first switch, which comprises a first connection terminal and a second connection terminal, the first connection terminal is electrically connected to the second conductive pin, the second connection terminal is electrically connected to the second input terminal. ### Claim 3 (depends on 2) The charging device of claim 2, wherein the power output unit further comprises a shell, a plurality of electrical pins electrically connected to the converter via the plurality of cables, the shell forms a receiving space to receive the plurality of electrical pins. ### Claim 4 (depends on 3) The charging device of claim 3, wherein the first switch further comprises a detection bar, a rotation bar, and a elastic member; the rotation bar rotatably fixed on the shell via a pivot, a first end of the rotation bar is connected to the shell via an elastic member, a first end of the detection bar protrudes out the shell, a second end of the detection bar resists a second end of the rotation bar. ### Claim 5 (depends on 4) The charging device of claim 4, wherein the detection bar detects whether the electronic device is electrically connected to the power output unit, and when the electronic device is electrically connected to the power output unit, the detection bar is pushed into the shell by the electronic device, when the electronic device is disconnected from the power output unit, the detection bar is rebound out of the shell by the elastic member. ### Claim 6 (depends on 4) The charging device of claim 4, wherein the first switch further comprises a supporting portion located on the shell to limit a rotation angle of the rotation bar. ### Claim 7 (depends on 4) The charging device of claim 4, wherein power output unit further comprises a third connection terminal and a fourth connection terminal, the fourth connection terminal is electrically connected to the second connection terminal and the third connection terminal. ### Claim 8 (depends on 7) The charging device of claim 7, wherein the first switch further comprises a platform, and the third connection terminal and the fourth connection terminal are located on a same surface of the platform. ### Claim 9 (depends on 8) The charging device of claim 8, wherein the power output unit further comprises a second switch, the second switch comprises a substantially T-shaped portion, a first electromagnetic portion, and a second electromagnetic portion, when a current flows through the first electromagnetic portion and the second electromagnetic portion, the first electromagnetic portion or the second electromagnetic portion is magnetized and attract the T-shaped portion. ### Claim 10 (depends on 9) The charging device of claim 9, wherein the T-shaped portion comprises a sliding member and an attracting member, the sliding member is slidably connected to the platform and capable of sliding on the platform; the attracting member is located between the first electromagnetic portion and the second electromagnetic portion and capable of sliding along with the sliding member, when the attracting member is attracted by the first electromagnetic portion, the sliding member is electrically connected to the third connection terminal and the fourth connection terminal simultaneously, thus an electrical connection is built between the third connection terminal and the fourth connection terminal; when the attracting member is attracted by the second electromagnetic portion, the attracting member is electrically connected with the fourth connection terminal, the sliding member cut off the electrical connection between the third connection terminal and the fourth connection terminal. ### Claim 11 (depends on 10) The charging device of claim 10, wherein the power output unit further comprises a detection control portion, which comprises a first control terminal, a second control terminal, and a third control terminal; the first control terminal and the third control terminal are electrically connected to the first electromagnetic portion, the second control terminal and the third control terminal are electrically connected to the second electromagnetic portion. ### Claim 12 A charging device, comprising: a power converting unit comprising a first conductive pin, a second conductive pin, and a converter, wherein the first conductive pin and the second conductive pin are electrically connected to an alternating current (AC) power, the converter converts the AC power to a direct current (DC) power and outputs the DC power; and a power output unit electrically connected to the converter via a plurality of cables and outputting the DC power to an electronic device; wherein when the electronic device is fully charged or the electronic device disconnected from the power output unit, the converter stops receiving the AC power. ### Claim 13 (depends on 12) The charging device of claim 12, wherein the converter comprises a first input terminal and a second input terminal, the first input terminal is electrically connected to the first conductive pin, the second input terminal is electrically connected to the second conductive pin under control of the power output unit. ### Claim 14 (depends on 13) The charging device of claim 13, wherein the power output unit comprises a first switch, which comprises a first connection terminal and a second connection terminal, the first connection terminal is electrically connected to the second conductive pin, the second connection terminal is electrically connected to the second input terminal. ### Claim 15 (depends on 14) The charging device of claim 14, wherein the power output unit further comprises a shell, a plurality of electrical pins electrically connected to the converter via the plurality of cables, the shell forms a receiving space to receive the plurality of electrical pins. ### Claim 16 (depends on 15) The charging device of claim 15, wherein the first switch further comprises a detection bar, a rotation bar, and a elastic member; the rotation bar rotatably fixed on the shell via a pivot, a first end of the rotation bar is connected to the shell via an elastic member, a first end of the detection bar protrudes out the shell, a second end of the detection bar resists a second end of the rotation bar. ### Claim 17 (depends on 16) The charging device of claim 16, wherein the detection bar detects whether the electronic device is electrically connected to the power output unit, and when the electronic device is electrically connected to the power output unit, the detection bar is pressed into the shell by the electronic device, when the electronic device is disconnected from the power output unit, the detection bar is rebound out the shell by the elastic member. ### Claim 18 (depends on 17) The charging device of claim 17, wherein power output unit further comprises a third connection terminal and a fourth connection terminal, the fourth connection terminal is electrically connected to the second connection terminal and the third connection terminal. ### Claim 19 (depends on 18) The charging device of claim 18, wherein the first switch further comprises a platform, and the third connection terminal and the fourth connection terminal are located on a same surface of the platform. ### Claim 20 (depends on 19) The charging device of claim 19, wherein the power output unit further comprises a second switch, the second switch comprises a T-shaped portion, a first electromagnetic portion, and a second electromagnetic portion, when a current flows through the first electromagnetic portion and the second electromagnetic portion, the first electromagnetic portion or the second electromagnetic portion is magnetized and attract the T-shaped portion.