CN210490527U - Dummy load energy-saving charger circuit - Google Patents
Dummy load energy-saving charger circuit Download PDFInfo
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- CN210490527U CN210490527U CN201921774641.7U CN201921774641U CN210490527U CN 210490527 U CN210490527 U CN 210490527U CN 201921774641 U CN201921774641 U CN 201921774641U CN 210490527 U CN210490527 U CN 210490527U
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- dummy load
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Abstract
The utility model discloses a charger circuit of dummy load energy-conservation, including transformer T1, transformer T1 includes input winding and output winding, output winding is connected with diode D1, electric capacity EC1, dummy load R3, MOS pipe Q3, resistance R5 and R6, battery BT1 and dummy load control circuit, dummy load control circuit includes triode Q2, triode Q1, resistance R7 and resistance R2. Energy-conserving charger circuit of dummy load, whether can press from both sides the battery according to the charger automatically to control dummy load and connect in parallel to the circuit or break off from the circuit. When the dummy load is connected in parallel in the circuit, the adjustment of the minimum duty ratio can be realized; when the dummy load is disconnected from the circuit, the loss is reduced, the energy-saving effect is achieved, and the service life of the battery is prolonged.
Description
Technical Field
The utility model relates to a charger circuit, concretely relates to energy-conserving charger circuit of dummy load.
Background
Nowadays, batteries are used in a larger and larger field, so that the types of chargers for the batteries are more and more, and the chargers which are relatively popular in the market all use flyback circuits, and the flyback circuits can design a dummy load to adjust the duty ratio in no-load, but the dummy load can also become a redundant consumption device when the charger is clamped on the battery. If the dummy load is connected in parallel in the circuit and cannot be disconnected, and the charger clamps the battery for a long time, the battery is discharged at 6mA/S for about 8AH in 24 hours. Once the user forgets to remove the battery clip, the battery is damaged more.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the not enough of above technique, provide a dummy load energy-conserving charger circuit.
The utility model overcomes the technical scheme that its technical problem adopted is:
a dummy load energy-saving charger circuit comprises a transformer T1, wherein the transformer T1 comprises an input winding and an output winding, the output winding is connected with a diode D1, a capacitor EC1, a dummy load R3, a MOS tube Q3, resistors R5 and R6, a battery BT1 and a dummy load control circuit, and the dummy load control circuit comprises a triode Q2, a triode Q1, a resistor R7 and a resistor R2; the anode of the diode D1 is connected with one end pin of the output winding, the cathode of the diode D1 is connected with a power supply VCC and then is respectively connected with one end of a capacitor EC1, one end of a resistor R2, one end of a dummy load R3 and the source of an MOS tube, the base of a triode Q2 is connected with one end of a resistor R7, the collector of a triode Q2 is respectively connected with the base of the triode Q1 and the other end of a resistor R2, the collector of the triode Q1 is connected with the other end of the dummy load R3, the drain of the MOS tube is respectively connected with one end of the resistor R5 and the anode of a battery 1, the other end of the resistor R5 is connected with one end of a BT R6 and then leads out RV _ BAT, and the other end of the resistor R7 is connected with RV, the other end of the capacitor EC1, the emitter of the triode Q2, the emitter of the triode Q1, the other end of the resistor R6 and the negative electrode of the battery BT1 are connected with the other end pin of the output winding and then are connected with the ground in parallel.
Further, the gate of the MOS transistor Q3 is connected to a MOS transistor controller.
Further, the transformer T1 is a high frequency transformer, and outputs 16V voltage.
The utility model has the advantages that:
energy-conserving charger circuit of dummy load, whether can press from both sides the battery according to the charger automatically to control dummy load and connect in parallel to the circuit or break off from the circuit. When the dummy load is connected in parallel in the circuit, the adjustment of the minimum duty ratio can be realized; when the dummy load is disconnected from the circuit, the loss is reduced, the energy-saving effect is achieved, and the service life of the battery is prolonged.
Drawings
Fig. 1 is a charger circuit for saving energy of a dummy load according to an embodiment of the present invention.
Detailed Description
In order to facilitate better understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are given by way of illustration only and thus do not limit the scope of the present invention.
As shown in fig. 1, the dummy load energy-saving charger circuit according to this embodiment includes a transformer T1, where the transformer T1 is a high-frequency transformer and outputs 16V voltage. Transformer T1 includes input winding and output winding, the output winding is connected with diode D1, electric capacity EC1, dummy load R3, MOS pipe Q3, resistance R5 and R6, battery BT1 and dummy load control circuit, the utility model discloses utilize dummy load control circuit control dummy load R3 state in the circuit, namely, control dummy load R3 is parallelly connected in the circuit, still breaks off from the circuit. The dummy load control circuit comprises a transistor Q2, a transistor Q1, a resistor R7 and a resistor R2.
In this embodiment, the anode of the diode D1 is connected to one terminal pin of the output winding, the cathode of the diode D1 is connected to the power source VCC and then connected to one end of the capacitor EC1, one end of the resistor R2, one end of the dummy load R3, and the source of the MOS transistor, the base of the transistor Q2 is connected to one end of the resistor R7, the collector of the transistor Q2 is connected to the base of the transistor Q1 and the other end of the resistor R2, the collector of the transistor Q1 is connected to the other end of the dummy load R3, the drain of the MOS transistor is connected to one end of the resistor R5 and the anode of the battery BT1, the other end of the resistor R5 is connected to one end of the resistor R6 and then led out RV _ BAT, and the other end of the resistor R7 is connected to RV _ BAT, the other end of the capacitor EC1, the emitter of the triode Q2, the emitter of the triode Q1, the other end of the resistor R6 and the negative electrode of the battery BT1 are connected with the other end pin of the output winding and then are connected with the ground in parallel.
In this embodiment, the gate of the MOS transistor Q3 is connected to a MOS transistor controller, and the MOS transistor controller is configured to control on/off of the gate of the MOS transistor Q3.
The working principle of the dummy load energy-saving charger circuit described in this embodiment is as follows:
when the charger is connected with the AC220V voltage and does not clamp the battery, the voltage value collected by RV _ BAT is 0, then the base voltage of the triode Q2 is also 0, the collector and the emitter of the triode Q2 are not conducted, the base voltage of the triode Q1 is VCC, the collector and the emitter of the triode Q1 are conducted, the dummy load R3 is connected in parallel to the circuit, and the charger can adjust the latest duty ratio.
When the charger is switched on to the AC220V voltage and clamped on the battery, RV _ BAT collects the voltage, then transistor Q2 is turned on, but transistor Q1 is not turned on, so that dummy load R3 is disconnected from the circuit, thus achieving the effect of energy saving of the dummy load.
When the charger is clamped on the battery but the voltage of the AC220V is not switched on, the battery reversely charges the capacitor EC1 due to the existence of the body diode of the MOS transistor Q3, then RV _ BAT collects the voltage, the transistor Q2 is conducted, but the transistor Q1 is not conducted, so that the dummy load R3 is disconnected from the circuit, the loss of the battery is very small, and the battery is protected from reverse consumption.
The foregoing has described only the basic principles and preferred embodiments of the present invention and numerous changes and modifications may be made by those skilled in the art in light of the above teachings and shall fall within the scope of the present invention.
Claims (3)
1. The dummy load energy-saving charger circuit is characterized by comprising a transformer T1, wherein the transformer T1 comprises an input winding and an output winding, the output winding is connected with a diode D1, a capacitor EC1, a dummy load R3, a MOS tube Q3, resistors R5 and R6, a battery BT1 and a dummy load control circuit, and the dummy load control circuit comprises a triode Q2, a triode Q1, a resistor R7 and a resistor R2; the anode of the diode D1 is connected with one end pin of the output winding, the cathode of the diode D1 is connected with a power supply VCC and then is respectively connected with one end of a capacitor EC1, one end of a resistor R2, one end of a dummy load R3 and the source of an MOS tube, the base of a triode Q2 is connected with one end of a resistor R7, the collector of a triode Q2 is respectively connected with the base of the triode Q1 and the other end of a resistor R2, the collector of the triode Q1 is connected with the other end of the dummy load R3, the drain of the MOS tube is respectively connected with one end of the resistor R5 and the anode of a battery 1, the other end of the resistor R5 is connected with one end of a BT R6 and then leads out RV _ BAT, and the other end of the resistor R7 is connected with RV, the other end of the capacitor EC1, the emitter of the triode Q2, the emitter of the triode Q1, the other end of the resistor R6 and the negative electrode of the battery BT1 are connected with the other end pin of the output winding and then are connected with the ground in parallel.
2. The dummy load energy-saving charger circuit according to claim 1, wherein a MOS tube controller is connected to the gate of the MOS tube Q3.
3. The dummy load energy-saving charger circuit according to claim 1, wherein the transformer T1 is a high frequency transformer outputting 16V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921774641.7U CN210490527U (en) | 2019-10-22 | 2019-10-22 | Dummy load energy-saving charger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921774641.7U CN210490527U (en) | 2019-10-22 | 2019-10-22 | Dummy load energy-saving charger circuit |
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| Publication Number | Publication Date |
|---|---|
| CN210490527U true CN210490527U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921774641.7U Active CN210490527U (en) | 2019-10-22 | 2019-10-22 | Dummy load energy-saving charger circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094668A (en) * | 2021-11-25 | 2022-02-25 | 厦门深蓝动力科技有限公司 | Method for charging multiple external energy storage devices by using power cabinet |
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2019
- 2019-10-22 CN CN201921774641.7U patent/CN210490527U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094668A (en) * | 2021-11-25 | 2022-02-25 | 厦门深蓝动力科技有限公司 | Method for charging multiple external energy storage devices by using power cabinet |
| CN114094668B (en) * | 2021-11-25 | 2024-04-19 | 厦门深蓝动力科技有限公司 | Method for charging multiple external energy storage devices by using power cabinet |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Charger circuit with dummy load energy saving Effective date of registration: 20211029 Granted publication date: 20200508 Pledgee: Postal Savings Bank of China Limited by Share Ltd Xinchang branch Pledgor: XINCHANG BAIDE ELECTRONICS CO.,LTD. Registration number: Y2021330002084 |