CN110544973A - Mobile phone charger standby zero power consumption realized by using mobile phone battery as control signal source - Google Patents

Abstract

The mobile phone battery is used as a control signal source to realize the zero standby power consumption of the mobile phone charger, namely, when the mobile phone is charged, a plug of the charger is inserted into the mobile phone and then is linked with the positive electrode and the negative electrode of the mobile phone battery, the voltage value of the residual electric quantity (3V) of the mobile phone battery firstly supplies power to the front stage of a control circuit in the mobile phone charger, and the rear stage of the control circuit, which plays a switching role, is communicated with the power supply of the charger or the power transmission to a rear working circuit after the. The control process is as follows: 1. when the mobile phone is charged, the charger plug is inserted into the mobile phone; 2. the charger control circuit is communicated with the mobile phone battery to start working; 3. the charger is connected with the power grid to start working due to the switching action of the control circuit; 4. after charging, the charging plug is pulled out from the mobile phone interface, and the charger control circuit is powered off; 5. the entire charger is powered off.

Description

Mobile phone charger standby zero power consumption realized by using mobile phone battery as control signal source

The mobile phone is born and becomes a necessity of life of people, and the battery of the mobile phone can continue to work only after being charged for a certain time. According to estimation, hundreds of millions of mobile phone chargers are used for charging mobile phones every day in China. The penmen investigates that many people, especially young people, cannot pull the charger out of the power socket after the mobile phone is charged, the charger still does useless work in silence, and certain power consumption, namely standby power consumption, exists.

In order to reduce the standby power consumption of the mobile phone charger, researchers and researchers select excellent chips to design various charger circuits to the best extent, so that the cost of the charger is reduced. Even so, still have the components and parts to be in the on-state under the condition that the charger is not pulled out from supply socket, can generate heat and produce the potential safety hazard. The service life of the charger is shortened, and more electronic garbage is generated finally. The mobile phone battery is used as a control signal, and corresponding control circuits are additionally arranged on various existing mobile phone chargers to realize zero power consumption of the mobile phone charger in a standby state (the charger is not pulled out of a power socket). And the operation habit of a mobile phone user does not need to be changed, the mobile phone is still taken up as before when being charged, and the charger plug is inserted into the mobile phone interface. After the previous mobile phone is charged, the mobile phone charger is pulled out from the power socket and is used, and the pulled-out person needs to plug the mobile phone charger into the power socket again; the person who is not unplugged can omit the action

The control principle is as follows: the mobile phone end adds a positive pole (VDD) in the charging interface, the charger end adds a special control line (K) in the data line, when the mobile phone is charged, the control line is connected with the positive pole of the mobile phone battery, the residual voltage of the mobile phone battery is about 3V to supply power to the front end of the control circuit in the charger (the input end of the photoelectric coupler or the reed relay), when the charger is designed, the control circuit and the charging circuit share a negative pole (GND), thus, after the charging plug of the charger is inserted into the mobile phone, the front end photoelectric coupler or the reed relay of the control circuit in the charger starts working, the rear stage which is isolated from the front end and has the function of switching starts rapidly, the AC part of the input end of the charger is connected (the connection of the unfiltered DC which is not filtered after AC rectification and the following circuit can also be controlled), when the charging plug is pulled out after the mobile phone is charged, the front end photoelectric coupler or the reed relay of the control circuit in the charger supplies, the control circuit of the rear stage loses the function, the power supply of the charger is automatically closed or the alternating current rectification part is disconnected with the rear connection, and the on and off functions of the power supply of the charger are achieved.

It should be noted that the control line K is not necessarily adjacent to the positive electrode of the power supply, and may be disposed at any position in the interface according to practical convenience. Fig. 1 shows a circuit design mode in which the positive electrode is used as a control line, a photoelectric coupler is adopted at the front end of a control circuit, and an alternating current input end of a rear-stage control charger is adopted. The control mode is that a charger plug is inserted into a mobile phone, a charger control circuit is communicated with a mobile phone battery to start working, the power supply of the charger starts working due to the action of a switch of the control circuit on power grid connection, the charging is finished, the charging plug is pulled out of a mobile phone interface to power off the charger control circuit, and the whole charger is powered off.

Fig. 2 is a schematic diagram of the principle that the positive electrode is used as a control line, and a photoelectric coupler is used as the front end of a control circuit to control the alternating current input of the charger. The control circuit can also be used for controlling the linkage of the unfiltered direct current after alternating current rectification and the following circuit.

Fig. 3 is a schematic diagram of a principle that a negative electrode is used as a control line, and a dry reed relay is used for directly controlling the alternating current input of the charger, and the principle is that the dry reed relay and the like can be used under the condition that the requirements of a power switch or a load switch of the charger can be directly met. Otherwise, a post-stage circuit is required to be added for switching. In the future, for example, the relay of 4.5-5V is made to be a very small degree, and the relay is directly used.

Claims (4)

1. A standby zero-power-consumption mobile phone charger is characterized in that a battery connecting wire contact point (1) is additionally arranged in a mobile phone charging interface, a control wire (2) is additionally arranged in an output line of the mobile phone charger, a built-in battery supplies power to a control circuit (3) specially arranged in the mobile phone charger through the control wire when the mobile phone is charged, and the control circuit enables the mobile phone charger to be electrified and operated.

2. According to the requirement of claim 1, a battery connecting wire contact point (1) is additionally arranged in the charging interface of the mobile phone, and can be a positive electrode VDD (1-1) of the battery or a negative electrode GND (1-2) of the battery.

3. The control circuit can control the alternating current input (4) of the mobile phone charger and also can control the direct current which is rectified and not filtered after the alternating current input to supply power to the rear stage (5), so that the mobile phone charger cannot supply power to the rear stage and is in a zero power consumption state.

4. In order to separate the mobile phone battery and the high-voltage part device of the charger input end, the front end of the control circuit uses a photoelectric coupler or a reed relay (6), the rear stage can use a high-power device as a switch circuit, and the low-power mobile phone charger can directly use the reed relay or the photoelectric device as a switch (7) to control the power supply of the mobile phone charger.