CN105262173A - Wireless charger suitable for fault indicator - Google Patents
Wireless charger suitable for fault indicator Download PDFInfo
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- CN105262173A CN105262173A CN201510734225.4A CN201510734225A CN105262173A CN 105262173 A CN105262173 A CN 105262173A CN 201510734225 A CN201510734225 A CN 201510734225A CN 105262173 A CN105262173 A CN 105262173A
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Abstract
The invention provides a wireless charger suitable for a fault indicator. The wireless charger comprises an energy emission module, a reception coil, an energy collection circuit, a rectification and filtering circuit, a charging and discharging management circuit, a standby battery and a load, wherein the energy emission module is wirelessly connected with the reception coil, the reception coil is connected to the energy collection circuit, the energy collection circuit is connected to the rectification and filtering circuit, the rectification and filtering circuit is connected with the charging and discharging management circuit and the load, and the charging and discharging management circuit is connected with the standby battery and the load. After electricity is taken wirelessly, work of the fault indicator is not influenced by the current of lines or the weather, electricity can be taken stably, the real-time data processing capability of an MCU is improved, and the alarm accuracy of the fault indicator is indirectly improved.
Description
Technical field
The present invention relates to a kind of wireless charger, refer in particular to a kind of wireless charger that can be used for fault detector.
Background technology
Existing fault detector many employings circuit power taking or solar cell power taking, power taking limited power is in line load size of current and weather conditions, and at load current during lower or rainy weather, fault detector just can not work very well.In addition because power supply is unstable, power supply energy is little, traditional fault detector adopts simple algorithm and long-term park mode to save energy, and real time data processing ability, properties of product cannot promote, and cause the recall rate of short circuit and earth fault low.
Summary of the invention
The technical problem to be solved in the present invention, be to provide a kind of wireless charger that can be used for fault detector, after adopting wireless power taking, the work of fault detector is not by line current and weather effect, power taking is stablized, the processing capability in real time of MCU to data can be improved, indirectly promote the warning accuracy of fault detector.
The present invention is achieved in that a kind of wireless charger that can be used for fault detector, comprise energy transmitter module, receiving coil, energy collection circuit, current rectifying and wave filtering circuit, management of charging and discharging circuit, backup battery and load, receiving coil described in the wireless connections of described energy transmitter module, described receiving coil is connected to described energy collection circuit, described energy collection circuit is connected to described current rectifying and wave filtering circuit, described current rectifying and wave filtering circuit connects described management of charging and discharging circuit and load respectively, described management of charging and discharging circuit connects described backup battery and load respectively.
Further, described management of charging and discharging circuit comprises: electric capacity C1, electric capacity C2, diode V1, resistance R5, resistance R6, resistance R7, resistance R8, charging management chip U1 and triode Q1, described current rectifying and wave filtering circuit connects described electric capacity C1 one end respectively, the negative electrode of diode V1, the pin VCC of charging management chip U1, the pin COMP of charging management chip U1, one end of resistance R8 and load, the other end of described resistance R8 connects the pin SNS of described charging management chip U1 and the C pole of triode Q1 respectively, and the anode of described diode V1 connects the pin BAT of described charging management chip U1 respectively, one end of resistance R5, one end of backup battery and electric capacity C2, the other end of described resistance R5 connects the pin TS of described charging management chip U1 and one end of resistance R6 respectively, the B pole of described triode Q1 is connected to the pin CC of described charging management chip U1 by resistance R7, the E pole of described triode Q1 is connected to described backup battery, the other end of described electric capacity C1, the other end of resistance R6, the pin VSS of charging management chip U1 and the equal ground connection of the other end of electric capacity C2.
Further, described charging management chip U1 is BQ2057WSN chip.
The invention has the advantages that: a kind of wireless charger that can be used for fault detector of the present invention, wireless way to take power has following benefit: 1. not by line current and weather effect, can guarantee fault detector payload security, reliable and stable operation; 2. promote the technical performance of fault detector product.
Accompanying drawing explanation
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a kind of wireless charger principle schematic that can be used for fault detector of the present invention.
Fig. 2 is the circuit diagram of management of charging and discharging circuit in the present invention.
Embodiment
As shown in Figure 1, the present invention can be used for the wireless charger of fault detector, comprise energy transmitter module, receiving coil, energy collection circuit, current rectifying and wave filtering circuit, management of charging and discharging circuit, backup battery and load, receiving coil described in the wireless connections of described energy transmitter module, described receiving coil is connected to described energy collection circuit, described energy collection circuit is connected to described current rectifying and wave filtering circuit, described current rectifying and wave filtering circuit connects described management of charging and discharging circuit and load respectively, described management of charging and discharging circuit connects described backup battery and load respectively.
As shown in Figure 2, the circuit of management of charging and discharging described in the present invention comprises: electric capacity C1, electric capacity C2, diode V1, resistance R5, resistance R6, resistance R7, resistance R8, charging management chip U1 and triode Q1, described current rectifying and wave filtering circuit connects described electric capacity C1 one end respectively, the negative electrode of diode V1, the pin VCC of charging management chip U1, the pin COMP of charging management chip U1, one end of resistance R8 and load, the other end of described resistance R8 connects the pin SNS of described charging management chip U1 and the C pole of triode Q1 respectively, and the anode of described diode V1 connects the pin BAT of described charging management chip U1 respectively, one end of resistance R5, one end of backup battery and electric capacity C2, the other end of described resistance R5 connects the pin TS of described charging management chip U1 and one end of resistance R6 respectively, the B pole of described triode Q1 is connected to the pin CC of described charging management chip U1 by resistance R7, the E pole of described triode Q1 is connected to described backup battery, the other end of described electric capacity C1, the other end of resistance R6, the pin VSS of charging management chip U1 and the equal ground connection of the other end of electric capacity C2, described charging management chip U1 is BQ2057WSN chip, and wherein in figure, Rload is load.
As shown in Figure 2, its principle: management of charging and discharging builds with BQ2057 chip, and BQ2057 is applicable to the charging needs of lithium ion and lithium polymer battery.Its inner integrated constant pressure and flow device, with high and low limit current sense and programmable charge current, has automatically the characteristic such as charging again, minimum current termination charging, low-power consumption sleep.First BQ2507 checks operating voltage Vin+ (this Vin+ end is connected to current rectifying and wave filtering circuit), when the too low charger of operating voltage enters sleep pattern, if operating voltage is normal, check that whether battery temperature is at setting range by the voltage on TS pin, as abnormal, enter temperature fault pattern, otherwise detect cell voltage BAT+ (this BAT+ end is connected to backup battery), when cell voltage BAT+ is lower than thresholding, chip is with the current versus cell precharge of constant current 10%IREG.To complete battery pre-charging or cell voltage BAT+ lower than constant voltage VREG (namely to BQ2507W, VREG representative value is 8.4V) time, chip enters constant current charge state, now monitor charging current by the pressure drop on the sensing resistor R8 of outside, change resistance and take flash connected mode, namely R8 is connected between Vin+ and SNS pin, is obtained the feedback of charging current by SNS pin.Wherein R8=VSNS/IREG, IREG are expection charging current.Constant voltage charge state is entered when charging voltage reaches constant voltage.When inputting Vin+ and meeting operating voltage requirements, Vin+ is that load Rload powers, and is standby lithium cell charging.When Vin+ dead electricity, standby lithium battery passes through diode V1 to load discharge.
As shown in Figure 1, energy transmitter module is positioned at the concentrator of overhead line structures, and transmitting coil is wherein multiturn coil, uses the good ferrite of poly-magnetic energy power to carry out yoke process, selects the iron-based nano material design disk structure of high magnetic permeability, high resistivity.Fault detector includes receiving coil, energy collection circuit, current rectifying and wave filtering circuit and charge management circuit, and these circuit modules are connected successively, finally access backup battery.
The course of work describes:
After concentrator powers on, energy transmitter module launches magnetic energy to fault detector, after the induction coil of fault detector receives magnetic energy, be converted to electric flux, by becoming the direct current of constant voltage after collection of energy and current rectifying and wave filtering circuit, then be backup battery and load supplying by charge management circuit (see Fig. 1).
Although the foregoing describe the specific embodiment of the present invention; but be familiar with those skilled in the art to be to be understood that; specific embodiment described by us is illustrative; instead of for the restriction to scope of the present invention; those of ordinary skill in the art, in the modification of the equivalence done according to spirit of the present invention and change, should be encompassed in scope that claim of the present invention protects.
Claims (3)
1. one kind can be used for the wireless charger of fault detector, it is characterized in that: comprise energy transmitter module, receiving coil, energy collection circuit, current rectifying and wave filtering circuit, management of charging and discharging circuit, backup battery and load, receiving coil described in the wireless connections of described energy transmitter module, described receiving coil is connected to described energy collection circuit, described energy collection circuit is connected to described current rectifying and wave filtering circuit, described current rectifying and wave filtering circuit connects described management of charging and discharging circuit and load respectively, described management of charging and discharging circuit connects described backup battery and load respectively.
2. a kind of wireless charger that can be used for fault detector as claimed in claim 1, is characterized in that: described management of charging and discharging circuit comprises: electric capacity C1, electric capacity C2, diode V1, resistance R5, resistance R6, resistance R7, resistance R8, charging management chip U1 and triode Q1, described current rectifying and wave filtering circuit connects described electric capacity C1 one end respectively, the negative electrode of diode V1, the pin VCC of charging management chip U1, the pin COMP of charging management chip U1, one end of resistance R8 and load, the other end of described resistance R8 connects the pin SNS of described charging management chip U1 and the C pole of triode Q1 respectively, and the anode of described diode V1 connects the pin BAT of described charging management chip U1 respectively, one end of resistance R5, one end of backup battery and electric capacity C2, the other end of described resistance R5 connects the pin TS of described charging management chip U1 and one end of resistance R6 respectively, the B pole of described triode Q1 is connected to the pin CC of described charging management chip U1 by resistance R7, the E pole of described triode Q1 is connected to described backup battery, the other end of described electric capacity C1, the other end of resistance R6, the pin VSS of charging management chip U1 and the equal ground connection of the other end of electric capacity C2.
3. a kind of wireless charger that can be used for fault detector as claimed in claim 2, is characterized in that: described charging management chip U1 is BQ2057WSN chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510734225.4A CN105262173A (en) | 2015-11-03 | 2015-11-03 | Wireless charger suitable for fault indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510734225.4A CN105262173A (en) | 2015-11-03 | 2015-11-03 | Wireless charger suitable for fault indicator |
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| Publication Number | Publication Date |
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| CN105262173A true CN105262173A (en) | 2016-01-20 |
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| CN201510734225.4A Pending CN105262173A (en) | 2015-11-03 | 2015-11-03 | Wireless charger suitable for fault indicator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110383618A (en) * | 2018-09-12 | 2019-10-25 | Oppo广东移动通信有限公司 | Charge management circuit, terminal and charging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201887567U (en) * | 2010-12-02 | 2011-06-29 | 陈文英 | Vehicle-mounted wireless power supplying and charging device |
| WO2012027166A1 (en) * | 2010-08-23 | 2012-03-01 | Omnilectric, Inc. | Wireless power transmission system |
| CN203433077U (en) * | 2013-09-12 | 2014-02-12 | 国家电网公司 | Fault indicator of distribution network |
| CN205178553U (en) * | 2015-11-03 | 2016-04-20 | 福建奥通迈胜电力科技有限公司 | Wireless charger that can be used to fault indicator |
-
2015
- 2015-11-03 CN CN201510734225.4A patent/CN105262173A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012027166A1 (en) * | 2010-08-23 | 2012-03-01 | Omnilectric, Inc. | Wireless power transmission system |
| CN201887567U (en) * | 2010-12-02 | 2011-06-29 | 陈文英 | Vehicle-mounted wireless power supplying and charging device |
| CN203433077U (en) * | 2013-09-12 | 2014-02-12 | 国家电网公司 | Fault indicator of distribution network |
| CN205178553U (en) * | 2015-11-03 | 2016-04-20 | 福建奥通迈胜电力科技有限公司 | Wireless charger that can be used to fault indicator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110383618A (en) * | 2018-09-12 | 2019-10-25 | Oppo广东移动通信有限公司 | Charge management circuit, terminal and charging method |
| US11381102B2 (en) | 2018-09-12 | 2022-07-05 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Charging management circuit, terminal and charging method |
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Application publication date: 20160120 |
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