CN107546814B - Charging base and electronic product - Google Patents
Charging base and electronic product Download PDFInfo
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- CN107546814B CN107546814B CN201710962927.7A CN201710962927A CN107546814B CN 107546814 B CN107546814 B CN 107546814B CN 201710962927 A CN201710962927 A CN 201710962927A CN 107546814 B CN107546814 B CN 107546814B
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- 238000001514 detection method Methods 0.000 claims abstract description 63
- 238000003780 insertion Methods 0.000 claims description 40
- 230000037431 insertion Effects 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 230000004907 flux Effects 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention discloses a charging base and an electronic product, wherein a plug-in detection unit is used for detecting the connection between a charging pin of the charging base and a charging pin of the electronic product and outputting a detection signal to a plug-in detection end of a main control unit; the main control unit generates a charging control signal according to the detection signal inserted into the detection end and outputs the charging control signal to the charging management unit, and the charging management unit controls the electric energy output end to output electric energy for charging the electronic product, so that the problem of inconvenience in charging the electronic product is solved, the charging base is utilized to conveniently charge the electronic product, the service time of the electronic product is prolonged, the user demand is met, and the user experience is improved.
Description
Technical Field
The invention belongs to the technical field of charging, and particularly relates to a charging base and an electronic product.
Background
The intelligent watch is popular with users due to multiple functions, and has good market prospect.
However, the smart watch has more functions and consumes more power, so that the standby time is shorter, and frequent charging is required. However, the user cannot find the external power supply timely and conveniently in the business/travel process, so that the intelligent watch is inconvenient to charge, the long-time use requirement of the user in business/travel cannot be met, and the use experience is poor.
Disclosure of Invention
The invention provides a charging base, which solves the problem of inconvenient charging of electronic products.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
the charging base comprises a main control unit, a base battery, a charging management unit, an insertion detection unit and two charging pins: the first charging pins and the second charging pins are in one-to-one correspondence with the two charging pins of the electronic product; the electric energy input end of the charging management unit is connected with the base battery, the electric energy output end of the charging management unit is connected with a first charging pin of the charging base, and a second charging pin of the charging base is grounded; the insertion detection unit detects whether a charging pin of the charging base is connected with a charging pin of the electronic product or not, and outputs a detection signal to an insertion detection end of the main control unit; the main control unit outputs a charging control signal to the charging management unit according to the detection signal inserted into the detection end, and the charging management unit controls whether the electric energy output end outputs electric energy or not according to the received charging control signal.
Further, the charging base further comprises at least one magnet, and the polarity of the magnet is opposite to that of the magnet of the electronic product; the magnet of the charging base is attracted with the magnet of the electronic product, and the charging pin of the charging base is correspondingly connected with the charging pin of the electronic product.
Still further, the magnets of the charging base are distributed in three ways and are distributed in a triangle shape; is attracted with three magnets of the electronic product in one-to-one correspondence.
Further, the insertion detection unit includes a magnetic field sensor that detects a magnetic flux and outputs a detection signal to an insertion detection end of the main control unit.
Still further, the insertion detection unit includes a first switch circuit; the second charging pin of the charging base is grounded through a first current limiting resistor, a connection node of the second charging pin and the first current limiting resistor is connected with the control end of the first switching circuit, one end of a switching path of the first switching circuit is connected with the base battery through the second current limiting resistor, and the other end of the switching path of the first switching circuit is grounded; the connection node of the switching path of the first switching circuit and the second current limiting resistor is connected with the insertion detection end of the main control unit; the base battery is connected with the anode of the diode, and the cathode of the diode is connected with the first charging pin.
Preferably, a fifth current limiting resistor is connected in series between the two charging pins of the electronic product.
Further, the charging management unit comprises a sub-control unit, a third switch circuit, a fourth switch circuit, a voltage conversion circuit and an external power interface; the external power interface is connected with an external power supply; the external power interface is connected with the electric energy output end through a switch passage of the third switch circuit; the input end of the voltage conversion circuit is connected with the electric energy input end, and the output end of the voltage conversion circuit is connected with the electric energy output end through a switch path of the fourth switch circuit; the sub-control unit receives the charging control signal sent by the main control unit and controls the on-off of the third switch circuit and the fourth switch circuit.
Still further, the second pin that charges of charging base passes through the switch route ground connection of second switch circuit, the break-make of second switch circuit is controlled to main control unit.
Further, a switching path of the second switching circuit is grounded through a fourth current limiting resistor; the charging base further comprises an operational amplifier, wherein the non-inverting input end of the operational amplifier is connected with a connecting node of the second switch circuit and the fourth current limiting resistor, the inverting input end of the operational amplifier is connected with a reference voltage, and the output end of the operational amplifier is connected with the main control unit; the main control unit generates a charging control signal according to the received signal transmitted by the transport amplifier and outputs the charging control signal to the sub-control unit of the power management unit to control whether the voltage conversion circuit is enabled or not.
Based on the design of the charging base, the invention also provides an electronic product adopting the design of the charging base, which comprises a charger, a rechargeable battery, two charging pins and the charging base; the two charging pins are in one-to-one correspondence with the charging pins of the charging base, the two charging pins are connected with a charger, and the charger charges a rechargeable battery.
Compared with the prior art, the invention has the advantages and positive effects that: according to the charging base and the electronic product, the connection between the charging pin of the charging base and the charging pin of the electronic product is detected through the insertion detection unit, and a detection signal is output to the insertion detection end of the main control unit; the main control unit generates a charging control signal according to the detection signal inserted into the detection end and outputs the charging control signal to the charging management unit, and the charging management unit controls the electric energy output end to output electric energy for charging the electronic product, so that the problem of inconvenience in charging the electronic product is solved, the charging base is utilized to conveniently charge the electronic product, the service time of the electronic product is prolonged, the user demand is met, and the user experience is improved.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Drawings
FIG. 1 is a circuit block diagram of one embodiment of a charging dock in accordance with the present invention;
FIG. 2 is a schematic diagram of a charging base according to an embodiment of the present invention;
FIG. 3 is a schematic view of another embodiment of a charging base according to the present invention;
FIG. 4 is a schematic circuit diagram of one embodiment of a charging base in accordance with the present invention;
fig. 5 is a schematic circuit diagram of another embodiment of a charging base according to the present invention.
Reference numerals:
1. an electronic product; 2. a charging base; 3. a charging pin; 4. a magnet; 5. a magnetic field sensor.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Embodiment one, charging base 2 of this embodiment mainly includes main control unit MCU, base battery, charge management unit, inserts detecting element, two charging pins 3: the first charging pins P1', the second charging pins P2', and the two charging pins P1', P2' are in one-to-one correspondence with the two charging pins P1, P2 of the electronic product 1. The electric energy input end of the charging management unit is connected with the base battery, the electric energy output end of the charging management unit is connected with a first charging pin P1 'of the charging base, and a second charging pin P2' of the charging base is grounded; the insertion detection unit detects whether a charging pin of the charging base is connected with a charging pin of the electronic product or not, and outputs a detection signal to an insertion detection end AIO1 of the main control unit MCU; the main control unit MCU generates a charging control signal according to the detection signal inserted into the detection end AIO1 and outputs the charging control signal to the charging management unit, and the charging management unit controls whether the electric energy output end outputs electric energy or not according to the received charging control signal, as shown in fig. 1 to 4.
When the insertion detection unit detects that the charging pins P1', P2' of the charging base are in one-to-one correspondence with the charging pins P1, P2 of the electronic product, the insertion detection unit outputs a low-level signal to the insertion detection end AIO1 of the main control unit MCU, the main control unit MCU generates a charging control signal and sends the charging control signal to the charging management unit, the charging management unit controls the electric energy output end to output electric energy of the base battery according to the received charging control signal, the electric energy of the base battery charges the electronic product through the charging management unit, P1, P2 and P1', P2', the problem of inconvenience in charging the electronic product is solved, the electronic product can be conveniently charged by utilizing the charging base, the service time of the electronic product is prolonged, the user demand is met, and the user experience is improved.
When the insertion detection end AIO1 of the main control unit MCU is at a high level, the electric energy output end of the charging management unit does not output electric energy, and the electronic product is not charged.
The charging PINs P1', P2' of the charging base are generally disposed on an upper end surface of the charging base, and POGO-PIN is generally selected so as to be conveniently in butt joint with the charging PINs of the electronic product.
In this embodiment, the charging base 2 further includes at least one magnet 4, the polarity of the magnet 4 is opposite to that of the magnets of the electronic product, and the number of the magnets 4 is the same as that of the magnets of the electronic product. When the electronic product is placed on the charging base, the magnet 4 of the charging base is attracted with the magnet of the electronic product, and the charging pins of the charging base are connected with the charging pins of the electronic product in a one-to-one correspondence manner. The charging base is stably connected with the electronic product through the attraction of the magnet, so that the charging pins of the charging base are stably connected with the charging pins of the electronic product in one-to-one correspondence, and the charging stability and reliability are ensured.
In order to further improve the connection stability of the charging base and the electronic product, three magnets of the charging base are distributed in a triangular shape; when the electronic product is placed on the charging base, three magnets of the charging base are in one-to-one attraction with three magnets of the electronic product, and charging pins of the charging base are in one-to-one connection with charging pins of the electronic product.
In the present embodiment, the insertion detection unit includes a magnetic field sensor 5, and the magnetic field sensor 5 is connected to an insertion detection end AIO1 of the main control unit. The magnetic field sensor detects the magnetic flux and outputs a detection signal to the insertion detection terminal AIO1 of the main control unit.
When the magnet of the charging base and the magnet of the electronic product are not attracted together, the magnetic field sensor does not detect the change of magnetic flux, and a high level is output to the insertion detection end AIO1 of the main control unit, so that the electronic product is not placed on the charging base.
When the magnet of the charging base is attracted with the magnet of the electronic product, the magnetic flux changes, the magnetic field sensor detects the magnetic flux change, and low level is output to the insertion detection end AIO1 of the main control unit, so that the electronic product is placed on the charging base, P1', P2' are in one-to-one correspondence connection with P1 and P2, and the main control unit controls the charging management unit to charge the electronic product.
The magnetic field sensor is used for detecting the change of magnetic flux, so that whether the charging pin of the charging base is connected with the charging pin of the electronic product or not is detected, and the detection is convenient and the implementation is convenient.
In the embodiment, the magnetic field sensor is preferably a Hall sensor, so that the performance is stable and the cost is low.
In this embodiment, the charge management unit mainly includes a sub-control unit, a third switch circuit Q3, a fourth switch circuit Q4, a voltage conversion circuit, an external power interface, and the like. The external power supply interface is connected with an external power supply and is connected with the electric energy output end through a switch path of the third switch circuit Q3; that is, the electric energy provided by the external power supply is transmitted to the electric energy output end VCHG through the external power interface and the switching path of the third switching circuit Q3, and then the electronic product is charged through the charging pin. The input end of the voltage conversion circuit is connected with the electric energy input end, and the output end of the voltage conversion circuit is connected with the electric energy output end VCHG through a switching path of the fourth switch circuit Q4; that is, the electric energy provided by the base battery is transmitted to the voltage conversion circuit through the electric energy input end, and after voltage conversion, the electric energy is transmitted to the electric energy output end VCHG through the switching path of the fourth switch circuit Q4, and then the electric product is charged through the charging pin. The sub-control unit receives the charging control signal sent by the main control unit and controls the on-off of the third switch circuit Q3 and the fourth switch circuit Q4. The electric energy provided by the external power supply can be used for charging the base battery through the external power supply interface and the charging management unit. In this embodiment, the third switching circuit Q3 and the fourth switching circuit Q4 are low-turn-on voltage drop switching tubes, such as PMOS tubes.
The external power interface of the embodiment is a Micro-USB interface, and can be directly connected with a direct current power supply to charge the electronic product. An alternating current adapter can be further arranged in the charging management unit, alternating current provided by an external alternating current power supply is transmitted to the alternating current adapter through an external power supply interface, and the alternating current adapter rectifies and converts voltage of the received alternating current and then transmits the rectified alternating current to the electric energy output end VCHG through the Q3 to charge the electronic product.
The main control unit is connected with the external power interface and detects whether the external power interface is inserted with an external power supply.
When P1', P2' are connected with P1 and P2 in one-to-one correspondence (namely when the insertion detection end AIO1 of the main control unit is low level), when the main control unit detects that the external power supply interface is inserted with an external power supply, the output end PIO2 of the main control unit outputs high level and the output end PIO3 outputs low level to the sub control unit, the sub control unit controls the voltage conversion circuit to be disabled and controls the fourth circuit Q4 to be disconnected and the third switching circuit Q3 to be conducted, and the electric energy provided by the external power supply is transmitted to the electric energy output end VCHG through the external power supply interface and the switching passage of the third switching circuit Q3 and then charges the electronic product through the charging pin.
When P1', P2' are connected with P1 and P2 in one-to-one correspondence, when the main control unit detects that the external power supply interface is not plugged into an external power supply, the output end PIO2 of the main control unit outputs a low level, the output end PIO3 outputs a high level to the sub control unit, the sub control unit controls the voltage conversion circuit to enable and controls the fourth switching circuit Q4 to be conducted and the third switching circuit Q3 to be disconnected, and electric energy provided by the base battery is transmitted to the electric energy output end VCHG through the switching channels of the voltage conversion circuit and the fourth switching circuit Q4 and then charges the electronic product through the charging pin.
In this embodiment, the battery voltage of the base battery is 3.8V, and the voltage conversion circuit is a boost circuit to boost 3.8V to 5V, so as to charge the electronic product.
In this embodiment, in order to facilitate controlling the on/off of the charging circuit of the electronic product, the second charging pin P2' of the charging base is grounded through the switch path of the second switch circuit Q2, and the main control unit controls the on/off of the second switch circuit Q2. When P1', P2' are connected with P1 and P2 in one-to-one correspondence (namely when the insertion detection end AIO1 of the main control unit is at a low level), the main control unit controls the second switch circuit Q2 to be conducted so as to conduct a charging loop of the electronic product; when P1', P2' are not connected with P1, P2 (i.e. when the insertion detection terminal AIO1 of the main control unit is at high level), the main control unit controls the second switch circuit Q2 to be turned off, so that the charging circuit of the electronic product is cut off. In this embodiment, the second switching circuit is a high-turn-on voltage drop switching tube, such as an NMOS tube.
In this embodiment, the switching path of the second switching circuit Q2 is grounded through the fourth current limiting resistor R4; the charging base further comprises an operational amplifier OP1, wherein the non-inverting input end of the operational amplifier OP1 is connected with a connecting node of the second switching circuit Q2 and the fourth current limiting resistor R4, the inverting input end of the operational amplifier OP1 is connected with a reference voltage VREF (e.g. 1V), and the output end of the operational amplifier is connected with the main control unit; the main control unit generates a charging control signal according to the received signal transmitted by the transport amplifier OP1 and outputs the charging control signal to the sub-control unit of the power management unit to control whether the voltage conversion circuit is enabled or not.
When the base battery is charging the electronic product, the connection node of the second switch circuit Q2 and the fourth current limiting resistor R4 is at a high level, which is greater than the reference voltage VREF, the operational amplifier OP1 outputs a high level to the input terminal AIO2 of the main control unit, the output terminal PIO3 of the main control unit outputs a high level to the sub-control unit, and the sub-control unit controls the voltage conversion circuit to maintain the enabled state.
When the electronic product is fully charged, the current on the charging circuit is 0, the connection node of the second switching circuit Q2 and the fourth current limiting resistor R4 is at a low level, which is smaller than the reference voltage VREF, the operational amplifier OP1 outputs a low level to the input end AIO2 of the main control unit, the output end PIO3 of the main control unit outputs a low level to the sub-control unit, and the sub-control unit controls the voltage conversion circuit to be disabled and controls the second switching circuit Q2 to be turned off.
Because the voltage conversion circuit can generate about 4mA of quiescent current when the enabling state, the current value is great, consumes the electric energy of the base battery, influences the standby time of the charging base, therefore, when the base battery is used for charging the electronic product, when the electronic product is fully charged, the voltage conversion circuit is controlled not to be enabled, so that the power consumption is reduced, and the service time of the charging battery and the standby time of the charging base are prolonged.
The working process of the charging base is as follows, and in a default state, Q2, Q3 and Q4 are all in an off state.
(1) When the insertion detection unit detects the magnetic flux change, a low level is output to an insertion detection end AIO1 of the main control unit, and the electronic products are indicated to be placed on the charging base, wherein P1 'and P2' are in one-to-one correspondence connection with P1 and P2; the output end PIO1 of the main control unit outputs a high level to the control end of the second switching circuit Q2, and the second switching circuit Q2 is turned on.
(2) The main control unit detects whether an external power supply is connected or not, if the external power supply is connected at the moment, the output end PIO2 of the main control unit outputs a high level, the output end PIO3 outputs a low level to the sub control unit, the sub control unit controls the voltage conversion circuit to be disabled and controls the fourth switch circuit Q4 to be disconnected and the third switch circuit Q3 to be conducted, and electric energy provided by the external power supply is transmitted to the electric energy output end VCHG through an external power supply interface and a switch channel of the third switch circuit Q3 and then is transmitted to the charging pin to charge electronic products. Charging path: external power supply, external power supply interface, Q3, electric energy output end VCHG, P1', P1, electronic product charger, P2', Q2, R4 and GND.
If no external power supply is connected at this time, the output end PIO2 of the main control unit outputs a low level, the output end PIO3 outputs a high level to the sub control unit, the sub control unit controls the voltage conversion circuit to enable, controls the fourth switch circuit Q4 to be conducted and the third switch circuit Q3 to be disconnected, and the electric energy provided by the base battery is boosted through the voltage conversion circuit and then transmitted to the electric energy output end VCHG through the switch channel of the fourth switch circuit Q4 and then transmitted to the charging pin to charge the electronic product. Charging path: base battery- & gt voltage conversion circuit- & gt Q4- & gt electric energy output end VCHG- & gt P1 '& gt P1- & gt electronic product charger- & gt P2' & gt Q2- & gt R4- & gt GND.
In both charging processes, a voltage is formed over the resistor R4, the voltage at the non-inverting input terminal of the operational amplifier OP1 is greater than the voltage at the inverting input terminal, and the operational amplifier OP1 outputs a high level to the AIO2 of the main control unit.
(3) When the electronic product is fully charged, the current on the charging loop is 0, the voltage of the non-inverting input end of the operational amplifier OP1 is smaller than the voltage of the inverting input end, and the operational amplifier OP1 outputs a low level to the AIO2 of the main control unit; the output end PIO3 of the main control unit outputs low level to the sub control unit, and the sub control unit controls the voltage conversion circuit not to be enabled so as to reduce power consumption and prolong the standby time of the charging base. And controls the second switching circuit Q2 to be turned off.
Therefore, the charging base of this embodiment has both satisfied when having external power supply to connect to the charging of electronic product, has satisfied when no external power supply again, and the base battery charges to electronic product, is convenient for charge to electronic product, has prolonged the live time of electronic product, has satisfied the user demand, has improved user's use experience.
Based on the design of the charging base, the embodiment also provides an electronic product, which mainly comprises a charger, a rechargeable battery, two charging pins P1 and P2 and the charging base. The two charging pins P1 and P2 are in one-to-one correspondence with the charging pins P1 'and P2' of the charging base, the two charging pins P1 and P2 are connected with a charger, and the charger charges a rechargeable battery.
Through design in the electronic product the base that charges, the electronic product's of being convenient for charge, improved the live time of electronic product, satisfy user's user demand, improve user's use experience.
The electronic product can be a watch, a mobile phone, a PAD, intelligent wearing equipment and the like.
The second embodiment and the charging base of the present embodiment are different from the first embodiment in that the design of the insertion detection unit is different, and the insertion detection unit of the present embodiment is constructed by using components. Other structural designs of the charging base in this embodiment are the same as those in the first embodiment, and will not be described here again.
The insertion detection unit of the present embodiment mainly includes a first switch circuit Q1; the second charging pin P2 'of the charging base is grounded through a first current limiting resistor R1, a connection node of the second charging pin P2' and the first current limiting resistor R1 is connected with the control end of a first switching circuit Q1, one end of a switching path of the first switching circuit Q1 is connected with a base battery through a second current limiting resistor R2, and the other end of the switching path is grounded; the connection node of the switching path of the first switching circuit Q1 and the second current limiting resistor R2 is connected with an insertion detection end AIO1 of the main control unit MCU; the base battery is connected to the anode of the diode D1 through the current limiting resistor R3, and the cathode of the diode D1 is connected to the first charging pin P1' of the charging base, as shown in fig. 5. In this embodiment, the first switching circuit Q1 is a high-pass voltage drop switching tube, such as an NMOS tube.
When the charging pins P1', P2' of the charging base are not connected with the charging pins P1, P2 of the electronic product, the control end of the first switch circuit Q1 is pulled to be low level by the resistor R1, the first switch circuit Q1 is turned off, and the insertion detection end AIO1 of the main control unit MCU is high level, which indicates that the electronic product is not placed on the charging base.
When the charging pins P1', P2' of the charging base are in one-to-one correspondence with the charging pins P1, P2 of the electronic product, if an external power supply is connected at this time, the third switching circuit Q3 is controlled to be conducted, and the current provided by the external power supply flows through the external power supply interface, Q3, the electric energy output ends VCHG, P1', P1 and the chargers, P2' of the electronic product, the control end of the first switching circuit Q1 and the first current limiting resistor R1 flow into the ground, the control end of the first switching circuit Q1 is in a high level, and the switching path of the first switching circuit Q1 is conducted; the current of the base battery flows into the ground through the second current limiting resistor R2 and the switch path of the first switch circuit Q1, the switch path of the first switch circuit Q1 and the connection node of the second current limiting resistor R2 output low level to the insertion detection end AIO1 of the main control unit MCU, the electronic product is stated to be placed on the charging base, P1', P2' are connected with P1 and P2 in one-to-one correspondence, Q3 is conducted, and the external power supply charges the electronic product.
If no external power supply is connected at this time, the current provided by the base battery flows into the ground through the resistor R3, the diodes D1, P1', P1, the chargers, P2 and P2' of the electronic product, the control end of the first switch circuit Q1 and the first current limiting resistor R1, the first switch circuit Q1 is conducted, the insertion detection end AIO1 of the main control unit MCU is in a low level, the electronic product is stated to be placed on the charging base, the P1', P2' and the P1 and P2 are connected in one-to-one correspondence, the voltage conversion circuit is controlled to enable and Q4 to be conducted, and the base battery charges the electronic product.
In this embodiment, in order to ensure the conduction of the first switch circuit Q1, a fifth current limiting resistor R5 is connected in series between the two charging pins P1 and P2 of the electronic product, that is, the electronic product charger is connected in parallel with R5, so as to increase the voltage division ratio of the first current limiting resistor R1, ensure the voltage of the control end of the first switch circuit Q1, and ensure the conduction of the first switch circuit Q1. The charging current flows through P1', P1, the chargers and R5, P2', the control terminal of the first switching circuit Q1, the first current limiting resistor R1 into ground. R5 with a larger resistance value, such as 1MΩ, is selected to avoid loss of current at R5.
The insertion detection unit built by the components is low in cost and accurate in detection.
The working process of the charging base is as follows, and in a default state, Q1, Q2, Q3 and Q4 are all in an off state.
(1) The main control unit detects whether an external power supply is connected or not, and if the external power supply is connected at the moment, the Q3 is controlled to be conducted. When the insertion detection end AIO1 of the main control unit is at a low level, the electronic products are placed on the charging base, and P1', P2' are connected with P1 and P2 in a one-to-one correspondence manner; the output end PIO1 of the main control unit outputs a high level to the control end of the second switching circuit Q2, and the second switching circuit Q2 is turned on.
(2) The main control unit detects whether an external power supply is connected or not, if the external power supply is connected at the moment, the output end PIO2 of the main control unit outputs a high level, the output end PIO3 outputs a low level to the sub control unit, the sub control unit controls the voltage conversion circuit to be disabled and controls the fourth switch circuit Q4 to be disconnected and the third switch circuit Q3 to be conducted, and electric energy provided by the external power supply is transmitted to the electric energy output end VCHG through an external power supply interface and a switch channel of the third switch circuit Q3 and then is transmitted to the charging pin to charge electronic products. Charging path: external power supply, external power supply interface, Q3, electric energy output end VCHG, P1', P1, electronic product charger and resistor R5, P2', Q2, R4 and GND.
If no external power supply is connected at this time, the output end PIO2 of the main control unit outputs a low level, the output end PIO3 outputs a high level to the sub control unit, the sub control unit controls the voltage conversion circuit to enable, controls the fourth switch circuit Q4 to be conducted and the third switch circuit Q3 to be disconnected, and the electric energy provided by the base battery is boosted through the voltage conversion circuit and then transmitted to the electric energy output end VCHG through the switch channel of the fourth switch circuit Q4 and then transmitted to the charging pin to charge the electronic product. Charging path: base battery- & gt voltage conversion circuit- & gt Q4- & gt electric energy output end VCHG- & gt P1 '& gt P1- & gt electronic product charger and resistor R5- & gt P2' & gt Q2- & gt R4- & gt GND.
In both charging processes, a voltage is formed over the resistor R4, the voltage at the non-inverting input terminal of the operational amplifier OP1 is greater than the voltage at the inverting input terminal, and the operational amplifier OP1 outputs a high level to the AIO2 of the main control unit.
(3) When the electronic product is fully charged, the current on the charging loop is 0, the voltage of the non-inverting input end of the operational amplifier OP1 is smaller than the voltage of the inverting input end, and the operational amplifier OP1 outputs a low level to the AIO2 of the main control unit; the output end PIO3 of the main control unit outputs low level to the sub control unit, and the sub control unit controls the voltage conversion circuit not to be enabled so as to reduce power consumption and prolong the standby time of the charging base. And controls the second switching circuit Q2 to be turned off.
Therefore, the charging base of this embodiment has both satisfied when having external power supply to connect to the charging of electronic product, has satisfied when no external power supply again, and the base battery charges to electronic product, is convenient for charge to electronic product, has prolonged the live time of electronic product, has satisfied the user demand, has improved user's use experience.
Based on the design of the charging base, the embodiment also provides an electronic product, which mainly comprises a charger, a rechargeable battery, two charging pins P1 and P2 and the charging base. The two charging pins P1 and P2 are in one-to-one correspondence with the charging pins P1 'and P2' of the charging base, the two charging pins P1 and P2 are connected with a charger, and the charger charges a rechargeable battery.
Through design in the electronic product the base that charges, the electronic product's of being convenient for charge, improved the live time of electronic product, satisfy user's user demand, improve user's use experience.
The electronic product can be a watch, a mobile phone, a PAD, intelligent wearing equipment and the like.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that other variations, modifications, additions and substitutions are possible, without departing from the scope of the invention as disclosed in the accompanying claims.
Claims (8)
1. A charging base, its characterized in that: including main control unit, base battery, charge management unit, insert detection unit, two charging pins: the first charging pins and the second charging pins are in one-to-one correspondence with the two charging pins of the electronic product;
the electric energy input end of the charging management unit is connected with the base battery, the electric energy output end of the charging management unit is connected with a first charging pin of the charging base, and a second charging pin of the charging base is grounded;
the insertion detection unit detects whether a charging pin of the charging base is connected with a charging pin of the electronic product or not, and outputs a detection signal to an insertion detection end of the main control unit;
the main control unit outputs a charging control signal to the charging management unit according to the detection signal inserted into the detection end, and the charging management unit controls whether the electric energy output end outputs electric energy or not according to the received charging control signal;
the charging base also comprises at least one magnet, and the polarity of the magnet is opposite to that of the magnet of the electronic product; the magnet of the charging base is attracted with the magnet of the electronic product, and the charging pin of the charging base is correspondingly connected with the charging pin of the electronic product;
the insertion detection unit includes a first switch circuit;
the second charging pin of the charging base is grounded through a first current limiting resistor, a connection node of the second charging pin and the first current limiting resistor is connected with the control end of the first switching circuit, one end of a switching path of the first switching circuit is connected with the base battery through the second current limiting resistor, and the other end of the switching path of the first switching circuit is grounded; the connection node of the switching path of the first switching circuit and the second current limiting resistor is connected with the insertion detection end of the main control unit;
the base battery is connected with the anode of the diode, and the cathode of the diode is connected with the first charging pin.
2. The charging base of claim 1, wherein: the magnets of the charging base are distributed in three ways and are distributed in a triangle shape; is attracted with three magnets of the electronic product in one-to-one correspondence.
3. The charging base of claim 1, wherein: the insertion detection unit includes a magnetic field sensor that detects a magnetic flux and outputs a detection signal to an insertion detection end of the main control unit.
4. The charging base of claim 1, wherein: a fifth current limiting resistor is connected in series between two charging pins of the electronic product.
5. The charging base according to any one of claims 1 to 4, wherein: the charging management unit comprises a sub-control unit, a third switch circuit, a fourth switch circuit, a voltage conversion circuit and an external power interface;
the external power interface is connected with an external power supply; the external power interface is connected with the electric energy output end through a switch passage of the third switch circuit;
the input end of the voltage conversion circuit is connected with the electric energy input end, and the output end of the voltage conversion circuit is connected with the electric energy output end through a switch path of the fourth switch circuit;
the sub-control unit receives the charging control signal sent by the main control unit and controls the on-off of the third switch circuit and the fourth switch circuit.
6. The charging base of claim 5, wherein: the second charging pin of the charging base is grounded through a switch path of the second switch circuit, and the main control unit controls the on-off of the second switch circuit.
7. The charging base of claim 6, wherein: the switching path of the second switching circuit is grounded through a fourth current limiting resistor;
the charging base further comprises an operational amplifier, wherein the non-inverting input end of the operational amplifier is connected with a connecting node of the second switch circuit and the fourth current limiting resistor, the inverting input end of the operational amplifier is connected with a reference voltage, and the output end of the operational amplifier is connected with the main control unit;
the main control unit generates a charging control signal according to the received signal transmitted by the transport amplifier and outputs the charging control signal to the sub-control unit of the power management unit to control whether the voltage conversion circuit is enabled or not.
8. An electronic product, characterized in that: comprising a charger, a rechargeable battery, two charging pins, a charging base as claimed in any one of claims 1 to 7; the two charging pins are in one-to-one correspondence with the charging pins of the charging base, the two charging pins are connected with a charger, and the charger charges a rechargeable battery.
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| CN201710962927.7A CN107546814B (en) | 2017-10-16 | 2017-10-16 | Charging base and electronic product |
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| CN108377146B (en) * | 2018-04-16 | 2024-04-02 | 歌尔科技有限公司 | Hall detection circuit and intelligent wearing equipment |
| CN110764397B (en) * | 2018-07-26 | 2021-07-23 | 青岛海信移动通信技术股份有限公司 | Intelligent watch and mode switching method thereof |
| CN110764398B (en) * | 2018-07-26 | 2021-06-01 | 青岛海信移动通信技术股份有限公司 | Intelligent watch and mode switching method thereof |
| WO2020020356A1 (en) * | 2018-07-26 | 2020-01-30 | 青岛海信移动通信技术股份有限公司 | Smart watch and mode switching method therefor |
| CN109738740B (en) * | 2018-12-25 | 2021-04-02 | Oppo广东移动通信有限公司 | Attraction-type power supply device, output control method, medium, and electronic device |
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| US8170623B2 (en) * | 2006-11-17 | 2012-05-01 | Apple Inc. | Charging arrangement for electronic accessories |
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