WO2016165457A1

WO2016165457A1 - Charger

Info

Publication number: WO2016165457A1
Application number: PCT/CN2016/073376
Authority: WO
Inventors: 卢丽君; 谷建清
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-23
Filing date: 2016-02-03
Publication date: 2016-10-20
Also published as: CN106558904A

Abstract

A charger (10), comprising a switch (101), a transformer rectifier module (102), a current detection module (103), a voltage detection module (104) and a switch control module (105), wherein a first end of the switch (101) is connected to a first end of a power source (106), a second end of the switch (101) is connected to a first end of the transformer rectifier module (102), a second end of the transformer rectifier module (102) is connected to a second end of the power source (106), a third end of the transformer rectifier module (102) is connected to a first end of the current detection module (103), a second end of the current detection module (103) is connected to a first end of the switch control module (105), a first end of the voltage detection module (104) is connected to a third end of the current detection module (103), and a second end of the voltage detection module (104) is connected to the first end of the switch control module (105); the current detection module (103) determines whether the charger (10) is connected to a battery (107); the voltage detection module (104) determines whether the battery (107) is fully charged; when the charger (10) is connected to the battery (107) and the battery (107) is not fully charged, the switch control module (105) controls the switching-on of the switch (101); and the transformer rectifier module (102) provides a charging voltage for the battery (107) when the switch (101) is switched on.

Description

a charger

Technical field

The present invention relates to charging technology in the field of electrical appliances, and more particularly to a charger.

Background technique

With the development of electronic products, in order to ensure the convenience of users, many electronic products have chosen to use battery power, so the charger for charging the battery has become an indispensable derivative of electronic products.

Connect the power end of the charger to the plug, and connect the charging end to the battery of the electronic product to convert the AC voltage into a DC voltage to complete the charging of the battery. However, in actual use, after the battery of the electronic product is fully charged, the user may directly disconnect the battery of the electronic product from the charger, but forget to disconnect the charger from the plug, so that the charger is in a charging state for a long time. This leads to waste of power resources and accelerates the aging of the charger. At the same time, if the quality of the charger itself is not high, there are problems such as poor material of the transformer coil, cut corners, poor insulation of the material, etc., it is likely that the charger will be heated due to the long-term charging state of the charger, and may cause a fire when the temperature of the charger is high. , to the user's daily life to bury a security risk.

Summary of the invention

In order to solve the above technical problem, the embodiment of the present invention is expected to provide a charger, which can save resources, slow down the aging speed of the charger, and improve the security during the use of the user.

The technical solution of the embodiment of the present invention is implemented as follows:

The embodiment of the invention provides a charger, comprising: a switch, a transformer rectifier module, a current detecting module, a voltage detecting module, and a switch control module;

The first end of the switch is connected to the first end of the power source, and the second end of the switch is opposite to the change The first end of the voltage rectifier module is connected, the second end of the transformer rectifier module is connected to the second end of the power source, and the third end of the transformer rectifier module is connected to the first end of the current detecting module The second end of the current detecting module is connected to the first end of the switch control module, the first end of the voltage detecting module is connected to the third end of the current detecting module, and the voltage detecting module is The two ends are connected to the first end of the switch control module;

The current detecting module is configured to determine whether a third end of the current detecting module and a second end of the switch control module are connected to a battery;

The voltage detecting module is configured to determine whether the battery is currently not fully charged;

The switch control module is configured to control the switch to be closed when both the third end of the current detecting module and the second end of the switch control module are connected to the battery, and the battery is not fully charged;

The transformer rectifier module is configured to provide a charging voltage to the battery when the switch is closed.

In the above solution, the voltage detecting module is provided with a voltage threshold;

The voltage detection module is configured to detect a voltage of the battery when the voltage of the battery is less than the voltage threshold, determining that the battery is not currently fully charged.

In the above solution, the charger further includes a voltage comparison module, the first end of the voltage comparison module is connected to the second end of the current detection module, and the second end of the voltage comparison module and the voltage detection module The second end of the voltage comparison module is connected to the first end of the switch control module.

In the above solution, the voltage comparison module is a NOR gate;

The current detecting module is configured to output a low level when the third end of the current detecting module and the second end of the switch control module are both connected to the battery;

The voltage detecting module is configured to detect the voltage when the battery is not currently fully charged The second end of the module outputs a low level;

The NOR gate is configured to output the turn-on voltage when the first end and the second end of the NOR gate are both input with a low level, the turn-on voltage is high Level

The switch control module is configured to control the switch to close when a first level of the switch control module inputs a high level.

In the above solution, the switch control module includes a triode and a switch controller, and the e end of the triode is connected to the first end of the current detecting module, and the b end of the triode and the third end of the NOR gate Connected, the c-end of the triode is connected to the switch controller.

In the above solution, the switch is a relay switch, and the switch control module includes a relay switch controller.

In the above solution, the charger further includes a charging button;

The first end of the charging button is connected to the first end of the switch, the second end of the charging button is connected to the second end of the switch, and the third end of the charging button is suspended;

The charging button is configured to connect the first end and the second end of the charging button through a third end of the charging button.

In the above solution, the current detecting module is further configured to: when the third end of the charging button is connected to the first end and the second end of the charging button, detecting whether a charging current exists in the charging circuit; when the charging circuit exists When charging current, it is determined that the third end of the current detecting module and the second end of the switch control module are both connected to the battery.

In the above solution, the charger further includes a safety module; the first end of the safety module is connected to the first end of the power source, and the second end of the safety module is connected to the first end of the switch.

An embodiment of the present invention provides a charger, including: a switch, a transformer rectifier module, a current detecting module, a voltage detecting module, and a switch control module; the first end of the switch is connected to the first end of the power source, and the second end of the switch is The first end of the transformer rectifier module is connected, the second end of the transformer rectifier module is connected to the second end of the power supply, and the third end of the transformer rectifier module is connected to the first end of the current detecting module The second end of the current detecting module is connected to the first end of the switch control module, the first end of the voltage detecting module is connected to the third end of the current detecting module, and the second end of the voltage detecting module and the first end of the switch control module The current connection module is configured to determine whether the third end of the current detecting module and the second end of the switch control module are connected to the battery; the voltage detecting module is configured to determine whether the battery is currently not fully charged; and the switch control module is configured to detect current The third end of the module and the second end of the switch control module are both connected to the battery, and when the battery is not fully charged, the control switch is closed; the transformer rectifier module is configured to provide a charging voltage to the battery when the switch is closed. In this way, after the charger is connected to the power source, instead of immediately starting the charging, it first detects whether the charger is connected to the battery, and detects whether the battery is currently not fully charged, when the charger is connected to the battery, and the battery is not currently fully charged. When charging, the charging is performed. If the charger is not connected to the battery, the switch cannot be closed, and the charger cannot enter the charging state, thus avoiding waste of resources caused by the charger being charged for a long time when the battery is not connected. The aging speed of the charger, while eliminating the safety hazard caused by the low quality of the charger.

DRAWINGS

1 is a schematic structural diagram of a first charger according to an embodiment of the present invention;

2 is a schematic structural diagram of a second charger according to an embodiment of the present invention;

3 is a schematic structural diagram of a third charger according to an embodiment of the present invention;

4 is a schematic structural diagram of a fourth charger according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a fifth charger according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a sixth charger according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

The embodiment of the present invention provides a charger 10, as shown in FIG. 1, comprising: a switch 101, which is changed. The voltage rectification module 102, the current detection module 103, the voltage detection module 104, and the switch control module 105.

The first end of the switch 101 is connected to the first end of the power supply 106, the second end of the switch 101 is connected to the first end of the transformer rectifier module 102, and the second end of the transformer rectifier module 102 is connected. Connected to the second end of the power source 106, the third end of the transformer rectifier module 102 is connected to the first end of the current detecting module 103, and the second end of the current detecting module 103 is controlled by the switch The first end of the voltage detecting module 104 is connected to the third end of the current detecting module 103, and the second end of the voltage detecting module 104 and the switch control module 105 are connected. Connected at one end.

The current detecting module 103 is configured to determine whether the third end of the current detecting module 103 and the second end of the switch control module 105 are connected to the battery 107. The voltage detection module 104 is configured to determine if the battery 107 is currently not fully charged. The switch control module 105 is configured to control when the third end of the current detecting module 103 and the second end of the switch control module 105 are both connected to the battery 107, and the battery 107 is not fully charged. The switch 101 is closed. The transformer rectifier module 102 is configured to provide a charging voltage to the battery 107 when the switch 101 is closed.

The power source 106 is an AC power source. For example, it may be an AC power of 220 V or an AC power of 330 V, which is not limited in this embodiment of the present invention. Generally, the charger is further provided with a plug, which is respectively connected to the first end of the switch 101 and the second end of the transformer rectifier module 102. When the user needs to use the charger 10, the charger is The plug is inserted into a commonly used socket for providing AC power. The socket for providing AC power is the power source 106. The first end of the switch 101 and the second end of the transformer rectifier module 102 are connected to the power source 106 through a plug. When the charger 10 is not in use, the switch 101 is in an open state. After the charger 10 is inserted into the socket, the current detecting module 103 first detects whether the charger is connected to the battery 107, that is, first detects the third end of the current detecting module 103 and Whether the second end of the switch control module 105 is connected to the battery 107. When the battery 107 is connected to the charger 10, the current detecting module 103 can be connected to the switch control module 105. Send the battery connected signal. However, if the user connects the mobile phone battery to the charger for a long time, the mobile phone battery may be fully charged, but the charger is always in the charging state, that is, the battery of the mobile phone is continuously charged, so that the performance of the battery is greatly attenuated, and the battery is accelerated. The aging speed. Therefore, the charger 10 can detect whether the mobile phone battery 107 is fully charged by the voltage detecting module 104. When the battery is not fully charged, the voltage detecting module 104 sends a battery unfilled signal to the switch control module 105, and the switch control module 105 is After receiving the battery connected signal and the battery not full signal, respectively, the switch 101 is controlled to be closed, at which time the charger 10 enters a charging state to charge the battery 107.

For example, the voltage detection module 104 can be provided with a voltage threshold; when the voltage of the battery 107 is less than the voltage threshold, the voltage detection module 104 determines that the battery 107 is not currently fully charged. Specifically, the voltage threshold may be set in the voltage detecting module 104 according to a specific situation. When the voltage detecting module 104 detects that the current voltage of the mobile phone battery 107 is less than the voltage threshold, it indicates that the mobile phone battery 107 is not full, and the charger 10 may continue. Charging the battery 107; when the voltage detecting module 104 detects that the current voltage of the mobile phone battery 107 is greater than or equal to the voltage threshold, indicating that the mobile phone battery 107 is full, the voltage detecting module 104 can send the battery full signal to the switch control module 105, and the switch control The module 105 controls the switch 101 to open according to the battery full signal, so that the charger 10 stops charging the battery 107, avoiding damage caused by the battery 107 being repeatedly charged.

In this way, after the charger is powered on, the charger is not immediately activated, but first detects whether it is connected to the battery, and detects whether the battery is currently not fully charged. When the battery is connected and the battery is not fully charged, charging is performed. It avoids the waste of resources caused by the charger being charged for a long time when the battery is not connected, slows down the aging speed of the charger, and eliminates the safety hazard caused by the low quality of the charger.

Optionally, as shown in FIG. 2, the charger 10 further includes a voltage comparison module 108, and the first end of the voltage comparison module 108 is connected to the second end of the current detecting module 103, The second end of the voltage comparison module 108 is connected to the second end of the voltage detection module 104, and the third end of the voltage comparison module 108 is connected to the first end of the switch control module 105.

The voltage comparison module 108 is configured to determine, when the current detection module 103 determines that the third end of the current detection module 103 and the second end of the switch control module 105 are connected to the battery 107, and the voltage detection The module 104 determines that the battery 107 is not fully charged, and outputs a turn-on voltage such that the switch control module 105 is turned "on".

For example, if the current detecting module 103 and the voltage detecting module 104 are both connected to the first end of the switch control module 105, the switch control module 105 needs to receive the signals sent by the current detecting module 103 and the voltage detecting module 104 in time division, in time sharing. During the process, the charger may be charged when the battery is not connected, or the battery may be continuously charged when the battery is already full. Therefore, in actual application, the charger 10 may also set the voltage comparison module 108 when the current is detected. The module 103 detects that the charger 10 is connected to the battery 107, and sends a battery connected signal to the voltage comparison module 108; when the voltage detecting module 104 detects that the battery 107 is not fully charged, the battery is not fully charged to the voltage comparison module 108; When the voltage detection module 104 detects that the battery 107 is currently fully charged, it sends a battery full signal to the voltage comparison module 108. The voltage comparison module 108 can simultaneously receive the battery connected signal and the battery not full signal, or simultaneously receive the battery connected signal and the battery full signal; after receiving the battery connected signal and the battery not full signal, the voltage comparison module 108 outputs a guide. The turn-on voltage causes the switch control module 105 to be turned on; after receiving the battery connected signal and the battery full signal, the voltage comparison module 108 outputs a cutoff voltage that does not turn the switch control module 105 on, The switch 101 cannot be controlled to close, thereby causing the charger 10 to stop charging the battery 107.

For example, as shown in FIG. 3, the voltage comparison module 108 is a NOR gate 1081. The current detecting module 103 is further configured to: when the third end of the current detecting module 103 and the second end of the switch control module 105 are both connected to the battery 107, the second end of the current detecting module 103 The output is low. The voltage detection module 104 is further configured to when the battery 107 is currently When not fully charged, the second end of the voltage detecting module 104 outputs a low level. The NOR gate 1081 is further configured to output the conduction voltage when the first end and the second end of the NOR gate 1081 are input with a low level, the conduction The pass voltage is high. The switch control module 105 is configured to control the switch 101 to close when the first end of the switch control module 105 inputs a high level.

Specifically, when only two input terminals of the NOR gate 1081 are input with a low level, the output terminal outputs a high level. When the input levels of the two input terminals are different, or both inputs a high level, the output end thereof Both output low level. In a practical application, when the charger 10 is not connected to the battery 107, the third end of the current detecting module 103 outputs a high level. When the charger 10 is connected to the battery 107, the third end of the current detecting module 103 outputs a low power. If the current battery 107 is not full, the second end of the voltage detecting module 104 outputs a low level, and if the current battery 107 is already full, the second end of the voltage detecting module 104 outputs a high level. In this way, when the third end of the current detecting module 103 outputs a low level, and the second end of the voltage detecting module 104 outputs a low level, the charger 10 is connected to the battery 107, and the battery 107 is not fully charged. The output terminal of the NAND gate 1081 outputs a high level, which is the turn-on voltage of the switch control module 105, and the switch control module 105 is in the on state, the control switch 101 is closed; when the current detecting module 103 is When the third terminal outputs a high level, it indicates that the charger 10 is not connected to the battery 107. At this time, the voltage detected by the voltage detecting module 104 is the voltage of the third end of the current detecting module 103, and the voltage is also the current battery voltage. It can be 5V. If the voltage threshold of the voltage detecting module 104 is 3V, the second end of the voltage detecting module 104 outputs a low level, and the third end of the NOR gate 1081 outputs a low level, and the low level cannot The switch control module 105 is turned on, so that the switch 101 cannot be controlled to be closed, and the charger cannot enter the charging state; when the third end of the current detecting module 103 outputs a low level, and the second end of the voltage detecting module 104 outputs a high power Usually, the charger 10 is connected to the battery 107, but the battery 107 is already full. At this time, the third end of the NOR gate 1081 outputs a low level, the low level cannot make the switch control module 105 be turned on, and the charger stops as a mobile phone. Battery charging; when current check When the third end of the measuring module 103 outputs a high level, it indicates that the charger 10 is not connected to the battery 107. At this time, the voltage detected by the voltage detecting module 104 is the voltage of the battery 107. For example, it may be 5V, if the voltage detecting module When the voltage threshold of 104 is 8V, the voltage detecting module 104 outputs a high level, and the third end of the NOR gate 1081 still outputs a low level, which cannot turn the switch control module 105 on, thereby failing to control the switch. 101 is closed and the charger cannot enter the charging state.

Optionally, as shown in FIG. 4, the switch control module 105 includes a triode 1051 and a switch controller 1052. The e end of the triode 1051 is connected to the first end of the current detecting module 103. The triode 1051 is The b terminal is connected to the third end of the NOR gate 1081, and the c terminal of the triode 1051 is connected to the relay switch controller 1052; the triode 1051 is configured to output the conduction when the NOR gate 1081 outputs At the time of voltage, the b-end and the c-end are turned on; the switch controller 1052 is further configured to control the switch 101 to be closed when the b-side is turned on with the c-end.

Specifically, the transistor 1051 is normally in an off state, that is, the device in series with the transistor 1051 is in an open circuit and cannot be turned on, so that normal operation cannot be performed. When the b terminal of the transistor 1051 is input to a high level, the b terminal of the triode and the c The terminal is turned on, and the c-end and the e-end are also turned on. When the circuit in which the transistor 1051 is located is turned on, the device connected in series with the transistor 1051 is also turned on, and normal operation can be performed. Therefore, when the NOR gate 1081 outputs a high level, the b terminal of the triode is turned on with the c terminal, and at this time, the switch controller 1052 controls the switch 101 to be closed, and the charger 10 charges the battery.

Optionally, the switch 101 is a relay switch 101, and the switch control module 105 includes a relay switch controller 1052. The relay switch controller 1052 is configured to control the relay switch 101 when the transistor 1051 is turned on. Pick up.

Optionally, as shown in FIG. 5, the charger 10 further includes a charging button 109. The first end of the charging button 109 is connected to the first end of the switch 101, the second end of the charging button 109 is connected to the second end of the switch 101, and the third end 1091 of the charging button 109 Hanging. The charging button 109 is configured to connect the first end and the second end of the charging button 109 through the third end 1091 of the charging button 109.

Specifically, when the user needs to charge the battery 107, the mobile phone battery is taken as an example for description. The user connects the mobile phone with the charger, and then presses the third end 1091 of the charging button 109. At this time, the first button of the charging button 109. The terminal and the second terminal are connected through the third terminal 1091, and the charger 10 starts to be in a charging state. If the charger 10 is connected to the battery 107, the charging circuit has a charging current. If the charger 10 is not connected to the battery 107, the charging circuit does not. There is a charging current, so the current detecting module can determine whether the charger 10 is connected to the battery 107 by detecting whether the charging circuit has a charging current when the user presses the charging button 109; when the charging circuit has a charging current, and when the battery 107 is not When fully charged, the switch controller 1052 controls the switch 101 to pull in. At this time, the charger 10 starts charging the battery 107, although the third end 1091 of the charging button 109 has bounced back, that is, the charging button 109, as the user's operation stops. The two ends and the first end have been disconnected, but since the relay switch 101 has been engaged, the battery 107 can continue to be charged.

Optionally, as shown in FIG. 6 , the charger 10 further includes a fuse module 110. The first end of the fuse module 110 is connected to the first end of the power source 106, and the second end of the fuse module 110 is connected. Connected to the first end of the switch 101.

For example, since the use of the charger 10 is also affected by environmental factors, if the environment is relatively humid, the short circuit of the charger 10 may be caused; meanwhile, if the charger 10 is used for a long time, due to the aging of the wire, etc. The short circuit of the breaker 10 may be caused, so the fuse module 110 may be disposed in the charger. When the charger is short-circuited, the fuse module is disconnected to protect other components of the charger. Specifically, the fuse module 110 may be a fuse, which is not limited in this embodiment of the present invention.

An embodiment of the present invention provides a charger, including: a switch, a transformer rectifier module, a current detecting module, a voltage detecting module, and a switch control module; the first end of the switch is connected to the first end of the power source, and the second end of the switch is The first end of the transformer rectifier module is connected, and the second end of the transformer rectifier module Connected to the second end of the power supply, the third end of the transformer rectifier module is connected to the first end of the current detecting module, and the second end of the current detecting module is connected to the first end of the switch control module, and the first end of the voltage detecting module Connected to the third end of the current detecting module, the second end of the voltage detecting module is connected to the first end of the switch control module; the current detecting module is configured to determine whether the third end of the current detecting module and the second end of the switch control module are a battery connection; the voltage detection module is configured to determine whether the battery is currently not fully charged; and the switch control module is configured to be when the third end of the current detection module and the second end of the switch control module are both connected to the battery, and the battery is not currently fully charged, The control switch is closed; the transformer rectifier module is configured to provide a charging voltage to the battery when the switch is closed. In this way, after the charger is connected to the power source, instead of immediately starting the charging, it first detects whether the charger is connected to the battery, and detects whether the battery is currently not fully charged, when the charger is connected to the battery, and the battery is not currently fully charged. When charging, the charging is performed. If the charger is not connected to the battery, the switch cannot be closed, and the charger cannot enter the charging state, thus avoiding waste of resources caused by the charger being charged for a long time when the battery is not connected. The aging speed of the charger, while eliminating the safety hazard caused by the low quality of the charger.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

The embodiment of the invention avoids waste of resources caused by the charger being charged for a long time when the battery is not connected, slows down the aging speed of the charger, and eliminates the safety hazard caused by the low quality of the charger.

Claims

A charger includes: a switch, a transformer rectifier module, a current detecting module, a voltage detecting module, and a switch control module;

The first end of the switch is connected to the first end of the power source, the second end of the switch is connected to the first end of the transformer rectifier module, and the second end of the transformer rectifier module is connected to the power source The second end is connected, the third end of the transformer module is connected to the first end of the current detecting module, and the second end of the current detecting module is connected to the first end of the switch control module, The first end of the voltage detecting module is connected to the third end of the current detecting module, and the second end of the voltage detecting module is connected to the first end of the switch control module;

The current detecting module is configured to determine whether a third end of the current detecting module and a second end of the switch control module are connected to a battery;

The voltage detecting module is configured to determine whether the battery is currently not fully charged;

The switch control module is configured to control the switch to be closed when both the third end of the current detecting module and the second end of the switch control module are connected to the battery, and the battery is not fully charged;

The transformer rectifier module is configured to provide a charging voltage to the battery when the switch is closed.
The charger of claim 1, wherein the voltage detecting module is provided with a voltage threshold;

The voltage detection module is configured to detect a voltage of the battery when the voltage of the battery is less than the voltage threshold, determining that the battery is not currently fully charged.
The charger according to claim 1 or 2, wherein the charger further comprises a voltage comparison module, the first end of the voltage comparison module is connected to the second end of the current detecting module, and the voltage comparison module The second end is connected to the second end of the voltage detecting module, the voltage The third end of the comparison module is coupled to the first end of the switch control module.
The charger according to claim 3, wherein said voltage comparison module is a NOR gate;

The current detecting module is configured to output a low level when the third end of the current detecting module and the second end of the switch control module are both connected to the battery;

The voltage detecting module is configured to output a low level of the second end of the voltage detecting module when the battery is not fully charged;

The NOR gate is configured to output the turn-on voltage when the first end and the second end of the NOR gate are both input with a low level, the turn-on voltage is high Level

The switch control module is configured to control the switch to close when a first level of the switch control module inputs a high level.
The charger according to claim 4, wherein said switch control module comprises a triode and a switch controller, wherein an e-end of said triode is connected to a first end of said current detecting module, and a b-end of said triode The third end of the NOR is connected, and the c-end of the triode is connected to the switch controller.
The charger of claim 5 wherein said switch is a relay switch and said switch control module comprises a relay switch controller.
A charger according to any one of claims 4 to 5, wherein the charger further comprises a charging button;

The first end of the charging button is connected to the first end of the switch, the second end of the charging button is connected to the second end of the switch, and the third end of the charging button is suspended;

The charging button is configured to connect the first end and the second end of the charging button through a third end of the charging button.
The charger according to claim 7, wherein

The current detecting module is further configured to connect the charging button when the third end of the charging button is connected Detecting whether there is a charging current in the charging circuit when the first end and the second end of the button are present; determining that the third end of the current detecting module and the second end of the switch control module are both when the charging circuit has a charging current Connected to the battery.
The charger according to any one of claims 4 to 5, wherein the charger further comprises a fuse module; the first end of the fuse module is connected to the first end of the power source, and the fuse module The second end is coupled to the first end of the switch.