WO2021036946A1 - Circuit de commande de charge de batterie et dispositif électronique - Google Patents

Circuit de commande de charge de batterie et dispositif électronique Download PDF

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Publication number
WO2021036946A1
WO2021036946A1 PCT/CN2020/110589 CN2020110589W WO2021036946A1 WO 2021036946 A1 WO2021036946 A1 WO 2021036946A1 CN 2020110589 W CN2020110589 W CN 2020110589W WO 2021036946 A1 WO2021036946 A1 WO 2021036946A1
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WIPO (PCT)
Prior art keywords
circuit
resistor
battery
electrically connected
port
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PCT/CN2020/110589
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English (en)
Chinese (zh)
Inventor
秦威
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深圳市道通智能航空技术有限公司
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Publication of WO2021036946A1 publication Critical patent/WO2021036946A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits

Definitions

  • This application relates to the field of battery technology, in particular to a battery charging control circuit and electronic equipment.
  • a battery refers to a part of the space of a cup, tank or other container or composite container that contains an electrolyte solution and metal electrodes to generate electric current, and can convert chemical energy into electrical energy.
  • the battery as an energy source is a necessary component for the operation of various electronic devices. For example, taking an aircraft, such as an unmanned aerial vehicle, for example, the battery provides electrical energy for the various systems of the unmanned aerial vehicle to ensure the flight of the unmanned aerial vehicle and aerial photography during the flight.
  • a battery protection circuit In battery applications, a battery protection circuit is usually configured to provide the battery with protection functions such as over-discharge, over-charge, over-current, and over-temperature.
  • protection functions such as over-discharge, over-charge, over-current, and over-temperature.
  • the purpose of the embodiments of the present invention is to provide a battery charging control circuit and electronic equipment, so as to avoid sparking during charging.
  • an embodiment of the present invention provides a battery charging control circuit, including:
  • a battery charging control circuit includes:
  • the starting circuit is electrically connected to the switch circuit.
  • the starting circuit includes a first port and a second port. When the positive electrode of the battery is electrically connected to the first port, the negative electrode of the battery is electrically connected to the second port, and When the switch circuit is in the off state, the starting circuit and the battery form a first current loop, so that the starting circuit generates a starting signal, wherein the current flowing through the battery is the first current;
  • the controller is respectively electrically connected to the switch circuit and the start circuit, and is used to delay control the switch circuit to be in the conducting state according to the start signal, so that the start circuit, the switch circuit, and the start circuit are turned on.
  • the battery forms a second current loop, wherein the current flowing through the battery is a second current, and the second current is greater than the first current.
  • the starting circuit includes:
  • the first current limiting circuit includes the first port
  • a unidirectional conduction circuit connected in parallel with the first current limiting circuit
  • the first trigger circuit is electrically connected to the second current limiting circuit and the controller respectively;
  • the switch circuit When the positive pole of the battery is electrically connected to the first port, the negative pole of the battery is connected to the second port, and the switch circuit is in the off state, the first current limiting circuit and the second current limiting circuit A circuit, the first trigger circuit, and the battery form the first current loop, so that the first trigger circuit generates the start signal;
  • the negative pole of the battery is electrically connected to the second port, and the switch circuit is in a conducting state, the unidirectional conducting circuit, the battery, and the The switch circuit forms the second current loop.
  • the second current limiting circuit and the first trigger circuit form a third current loop, wherein The first trigger circuit does not generate the start signal.
  • the first current limiting circuit includes a first resistor
  • One end of the first resistor is the first port, and the other end of the first resistor is electrically connected to the second current limiting circuit and used to connect to a first power source.
  • the unidirectional conduction circuit includes a first diode
  • the anode of the first diode is electrically connected to the other end of the first resistor, and the cathode of the first diode is electrically connected to the first port.
  • the second current limiting circuit includes a second diode, a second resistor, and a third resistor;
  • the anode of the second diode is electrically connected to the anode of the first diode, and the cathode of the second diode is electrically connected to one end of the second resistor;
  • the other end of the second resistor is electrically connected to one end of the third resistor and the first trigger circuit
  • One end of the third resistor is connected to the second port, and the other end of the third resistor is grounded.
  • the first trigger circuit includes a first optocoupler and a fourth resistor
  • One end of the primary side of the first optocoupler is electrically connected to the other end of the second resistor, the other end of the primary side of the first optocoupler is electrically connected to one end of the third resistor, and the first optocoupler is electrically connected to one end of the third resistor.
  • One end of the secondary side is electrically connected to one end of the fourth resistor, and the other end of the secondary side of the first optocoupler is grounded;
  • One end of the fourth resistor is electrically connected to the controller, and the other end of the fourth resistor is used to connect to a second power source.
  • the first trigger circuit includes a first switch tube and a fourth resistor
  • the control end of the first switch tube is electrically connected to the other end of the second resistor, one end of the first switch tube is electrically connected to one end of the fourth resistor, and the other end of the first switch tube is electrically connected to The second port is electrically connected;
  • One end of the fourth resistor is electrically connected to the controller, and the other end of the fourth resistor is used to connect to a second power source.
  • the battery charging control circuit further includes a reverse connection detection circuit, the input end of the reverse connection detection circuit is electrically connected to the second port, and the output end of the reverse connection detection circuit is electrically connected to the controller. connection;
  • the reverse connection detection circuit is used to respond to all The excitation of the battery generates a reverse connection detection signal, so that the controller controls the switch circuit to be in a cut-off state according to the reverse connection detection signal.
  • the reverse connection detection circuit includes:
  • the third current limiting circuit is electrically connected to the second port.
  • the second trigger circuit is electrically connected to the third current limiting circuit
  • the third current limiting circuit is connected to the first port.
  • the two trigger circuits form a fourth current loop, so that the second trigger circuit generates a reverse connection detection signal.
  • the third current limiting circuit includes a third diode and a fifth resistor
  • the anode of the third diode is electrically connected to the second port, and the cathode of the third diode is electrically connected to one end of the fifth resistor;
  • the other end of the fifth resistor is electrically connected to the second trigger circuit and used to connect to the first power source.
  • the second trigger circuit includes a second optocoupler and a sixth resistor
  • One end of the primary side of the second optocoupler is electrically connected to the other end of the fifth resistor, the other end of the primary side of the second optocoupler is used to connect to the first power source, and the secondary side of the second optocoupler One end is electrically connected to one end of the sixth resistor, and the other end of the secondary side of the second optocoupler is grounded;
  • One end of the sixth resistor is electrically connected to the controller, and the other end of the sixth resistor is used to connect to a second power source.
  • the second trigger circuit includes: a second switch tube and a sixth resistor;
  • the control end of the second switch tube is electrically connected to the other end of the fifth resistor, one end of the second switch tube is electrically connected to one end of the sixth resistor, and the other end of the second switch tube is used for To access the first power source;
  • One end of the sixth resistor is connected to the controller, and the other end of the sixth resistor is used to connect to a second power source.
  • the battery charging control circuit further includes a reverse connection prompt circuit, the input end of the reverse connection prompt circuit is electrically connected to the second port, and the output end of the reverse connection prompt circuit is electrically connected to the start circuit. connection;
  • the reverse connection prompt circuit is used to respond to the battery The stimulus to produce a reverse connection prompt signal.
  • the reverse connection prompt circuit includes a seventh resistor and a light emitting diode
  • One end of the seventh resistor is electrically connected to the second port, and the other end of the seventh resistor is electrically connected to the anode of the light emitting diode;
  • the cathode of the light emitting diode is electrically connected to the anode of the first diode.
  • the second current limiting circuit further includes an eighth resistor
  • One end of the eighth resistor is electrically connected to the other end of the second resistor, and the other end of the eighth resistor is connected to the second port.
  • the third current limiting circuit further includes a ninth resistor
  • One end of the ninth resistor is electrically connected to the other end of the fifth resistor, and the other end of the ninth resistor is used to connect to the first power source.
  • the switch circuit includes a third switch tube and a tenth resistor
  • the control end of the third switch tube is electrically connected to the controller, one end is grounded, and the other end is connected to the second port;
  • One end of the tenth resistor is electrically connected to the control end of the third switch tube, and the other end of the tenth resistor is electrically connected to one end of the third switch tube.
  • an embodiment of the present invention provides an electronic device, including a battery and the battery charging control circuit as described above.
  • a battery charging control circuit and an electronic device are provided.
  • the battery charging control circuit includes: a switch circuit; a start circuit connected to the switch circuit, the start circuit includes a first port and a second port, When the positive pole of the battery is electrically connected to the first port, the negative pole of the battery is connected to the second port, and the switch circuit is in the off state, the starting circuit and the battery form a first current loop , So that the start circuit generates a start signal, wherein the current flowing through the battery is the first current; the controller is respectively connected to the switch circuit and the start circuit for delaying according to the start signal When controlling the switch circuit to be in the conducting state, so that the starting circuit, the switch circuit, and the battery form a second current loop, wherein the current flowing through the battery is the second current, and the second current The current is greater than the first current.
  • the start signal is generated by the first current loop generated by the normal connection of the battery, so that the second current loop is turned on with a delay to charge the battery, and the ignition phenomenon
  • FIG. 1 is a schematic structural diagram of a battery charging control circuit provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the structure of a startup circuit provided by an embodiment of the present invention.
  • FIG. 3 is a circuit diagram of a battery charging control circuit provided by an embodiment of the present invention.
  • FIG. 4 is a circuit diagram of another battery charging control circuit provided by an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another battery charging control circuit provided by an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of the structure of a reverse connection detection circuit provided by an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another battery charging control circuit provided by an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of an anti-reverse charging circuit for a battery provided by an embodiment of the present invention.
  • the battery charging control circuit 100 includes:
  • the starting circuit 12 is electrically connected to the switch circuit 13.
  • the starting circuit 12 includes a first port and a second port. When the positive electrode of the battery is electrically connected to the first port, the negative electrode of the battery is electrically connected to When the second port and the switch circuit 13 are in the cut-off state, the starting circuit 12 and the battery form a first current loop, so that the starting circuit 12 generates a starting signal, which flows through the battery The current is the first current;
  • the controller 11 is electrically connected to the switch circuit 13 and the starting circuit 12 respectively, and is used for controlling the switch circuit to be in the conducting state with a delay according to the starting signal, so that the starting circuit 12, the starting circuit 12 and the starting circuit 12 are turned on.
  • the switch circuit 13 and the battery form a second current loop, wherein the current flowing through the battery is a second current, and the second current is greater than the first current.
  • the startup circuit 12 and the switch circuit 13 are respectively connected to the I/O ports of the controller 11.
  • the controller 11 detects that the I/O port corresponding to the start circuit 12 generates a start signal, it generates another charging signal and outputs it to the I/O port corresponding to the switch circuit 13 with a delay.
  • the switch circuit 13 is used to control the switch circuit 13 to be in a conducting state. Wherein, the switch circuit is in a cut-off state before receiving the charging signal sent by the controller 11.
  • the switch circuit 13 jumps to the conducting state, and one end of the switch circuit is grounded, and the start circuit 12
  • the external first power source flows through the start circuit 12 and is connected to one end (the first port) of the battery, thereby forming a second current loop of the start circuit 12, the battery and the switch circuit 13, and the second current In the loop state, the battery is charged by the external first power source of the starting circuit, wherein the first power source can be the power output from the external power supply network or any suitable power supply circuit.
  • the start signal is preset to be a high-level signal.
  • start signal When the user connects the positive pole of the battery to the first port of the startup circuit 12 and the negative pole to the second port of the startup circuit 12, a first current loop between the startup circuit and the battery is formed, and the The startup circuit will generate a high-level signal (start signal) and send it to the I/O port of the controller. After receiving the start signal, the controller will delay the output of high voltage through another I/O port.
  • the level signal is sent to the switch circuit 13, and the switch circuit 13 switches from the off state to the on state after receiving the high level signal, thereby forming the second current of the startup circuit 12, the battery, and the switch circuit 13 Loop, the battery is in a charged state in the second current loop.
  • the second current flowing through the second current loop is greater than the first current flowing through the first current loop.
  • the battery charging control circuit 100 when the battery is normally connected to the battery charging control circuit 100 (that is, the positive electrode of the battery is connected to the first port of the starting circuit 12, and the negative electrode is connected to the second port of the starting circuit 12)
  • the charging control circuit 100 will not charge the battery immediately, but will delay the preset time after detecting that the battery is normally connected to the battery charging control circuit 100 before charging the battery to Ensure the sparking phenomenon caused by plugging and unplugging in the energized state, and improve the safety performance.
  • the battery charging control circuit 100 that is, the negative electrode of the battery is connected to the first port of the starting circuit 12, and the positive electrode is connected to the second port of the starting circuit 12
  • the battery and the starting circuit 12 will not form a loop, and will not generate a starting signal.
  • the switch circuit 13 is in the off state, so the battery cannot be charged, which further avoids the phenomenon of reverse charging of the battery and improves safety .
  • the power input terminal of the controller 11 is connected to a second power source, and the power output terminal is grounded, where the second power source is the power supply voltage of the controller.
  • the above-mentioned battery can be any type of battery, such as a lithium battery, a nickel-cadmium battery, a nickel-hydrogen battery, a lead-acid battery, and so on.
  • the battery is composed of a number of single cells connected in series.
  • the battery is made up of a number of single cells in series in order to meet the power supply requirements of various electrical equipment. For example, it can meet the power requirements of the motors of unmanned aerial vehicles and other aircraft.
  • the battery includes 4 or more than 4 single batteries, and the 4 or more than 4 single batteries are connected in series to meet different power supply requirements. Accordingly, the voltage of the charger used to charge the battery is greater than 16V to ensure the normal charging of the battery.
  • the battery charging control circuit includes: a switch circuit; a start circuit connected to the switch circuit, the start circuit includes a first port and a second port, when the positive electrode of the battery is connected to In the first port, the negative electrode of the battery is connected to the second port, and when the switch circuit is in an off state, the startup circuit and the battery form a first current loop, so that the startup circuit generates The start signal, wherein the current flowing through the battery is the first current; the controller is respectively connected to the switch circuit and the start circuit, and is used for delaying control of the switch circuit to be in conduction according to the start signal.
  • the on state so that the starting circuit, the switch circuit, and the battery form a second current loop, wherein the current flowing through the battery is a second current, and the second current is greater than the first current.
  • the start signal is generated by the first current loop generated by the normal connection of the battery, so that the second current loop is turned on with a delay to charge the battery, and the ignition phenomenon of the battery during charging is avoided.
  • FIG. 2 is a schematic diagram of a battery charging control circuit provided by an embodiment of the present invention.
  • the battery charging control circuit 100 and the starting circuit 1 in the battery charging control circuit 100 provided by the embodiment of the present invention will be described in detail below in conjunction with FIG. 2 and the above-mentioned embodiments.
  • the starting circuit 12 includes:
  • the first current limiting circuit 121 includes the first port B+;
  • the unidirectional conduction circuit 122 is connected in parallel with the first current limiting circuit 121;
  • the second current-limiting circuit 123 is electrically connected to the unidirectional conduction circuit 122, and the second current-limiting circuit includes the second port B-;
  • the first trigger circuit 124 is electrically connected to the second current limiting circuit 124 and the controller 11 respectively;
  • the switch circuit 13 When the positive electrode of the battery is electrically connected to the first port B+, the negative electrode of the battery is connected to the second port B-, and the switch circuit 13 is in an off state, the first current limiting circuit 121 , The second current limiting circuit 123, the first trigger circuit 124, and the battery form the first current loop, so that the first trigger circuit 124 generates the start signal;
  • the unidirectional conduction circuit 122 When the positive electrode of the battery is electrically connected to the first port B+, the negative electrode of the battery is connected to the second port B-, and the switch circuit 13 is in a conducting state, the unidirectional conduction circuit 122 , The battery and the switch circuit 13 form the second current loop.
  • the unidirectional conduction circuit 122 is used to limit the conduction of the current from the first port B+ to the second current limiting circuit 123.
  • the second current limiting circuit 123 is used to limit the magnitude of the first current and the second current.
  • the first trigger circuit 124 is configured to generate a start signal according to the voltage in the first current loop and send it to the controller 11.
  • the first current limiting circuit 121 and the second current limiting circuit 123 may be composed of resistors and/or diodes
  • the unidirectional conduction circuit 122 may be composed of diodes
  • the first trigger circuit 124 may be composed of an optocoupler. It is composed of isolating components such as isolators or switch tubes, and the specific settings can be defined according to user needs.
  • the switch circuit 13 switches from the off state to the on state after a delay of a preset time State; when the negative pole of the battery is connected to the first port B+ and the positive pole of the battery is connected to the second port B-, the switch circuit 13 is always in an off state; when the battery charging control circuit 100 does not When the battery is connected, the switch circuit 13 is in an off state.
  • the second current limiting circuit 123 and the first trigger circuit 124 form a third current loop, wherein, the first trigger circuit 124 does not generate the start signal.
  • the circuit resistance of the third current loop is relatively large, and the current flowing through the first trigger circuit 124 It is not enough to cause the first trigger circuit 124 to generate a start signal.
  • the first current limiting circuit 121 includes: a first resistor R1;
  • One end of the first resistor R1 is the first port B+, and the other end of the first resistor R1 is electrically connected to the second current limiting circuit 123 and connected to the first power source Power.
  • the first resistor R1 assumes the role of diversion and voltage division when forming the first current loop.
  • the unidirectional conduction circuit 122 includes a first diode D1;
  • the anode of the first diode D1 is electrically connected to the other end of the first resistor R1, and the cathode of the first diode D1 is electrically connected to the first port B+.
  • the second current is directly applied to the anode of the battery to improve the charging efficiency.
  • the first diode D1 can be any suitable diode.
  • the first diode D1 may be a Zener diode with a model number of BZX384-C16.
  • the second current limiting circuit 123 includes a second diode D2, a second resistor R2, and a third resistor R3;
  • the anode of the second diode D2 is electrically connected to the anode of the first diode D1, and the cathode is electrically connected to one end of the second resistor R2;
  • the other end of the second resistor R2 is electrically connected to one end of the third resistor R3 and the first trigger circuit 124;
  • One end of the third resistor R3 is connected to the second port B-, and the other end of the third resistor R3 is grounded.
  • the second diode D2 plays a protective role, and the second resistor R2 and the third resistor R3 are used to limit the current. It should be noted that the resistance of the third resistor R3 is relatively large, so that when a third current loop is formed, the third current is not sufficient to enable the first trigger circuit 124 to generate a start signal.
  • the second current limiting circuit 123 further includes: an eighth resistor R8;
  • One end of the eighth resistor R8 is connected to the other end of the second resistor R2, and the other end is connected to the second port B-.
  • the eighth resistor R8 acts as a voltage divider.
  • the first trigger circuit 124 includes: a first optocoupler U1 and a fourth resistor R4;
  • One end of the primary side of the first optocoupler U1 is connected to the other end of the second resistor R2, and the other end of the primary side of the first optocoupler U1 is connected to one end of the third resistor R3.
  • One end of the secondary side is electrically connected to one end of the fourth resistor R4, and the other end of the secondary side of the first optocoupler U1 is grounded;
  • One end of the fourth resistor R4 is connected to the controller 11, and the other end of the fourth resistor R4 is connected to the second power source.
  • the fourth resistor R4 is connected to the port BAT_Correct of the controller 11.
  • the forward voltage may be 3.3V.
  • the first optocoupler U1 isolates the controller 11 from the battery charging control circuit and plays a protective role. At the same time, the first optocoupler U1 is also used to generate a start signal to pass the control The device 11 controls the working state of the switch circuit 13.
  • the fourth resistor R4 acts as a voltage divider.
  • the first trigger circuit 124 includes: a first switch tube Q1 and a fourth resistor R4;
  • the control end of the first switch tube Q1 is electrically connected to the other end of the second resistor R2, one end of the first switch tube Q1 is connected to one end of the fourth resistor R4, and the other end of the first switch tube Q1 is connected to The second port B-electrical connection;
  • One end of the fourth resistor R4 is electrically connected to the controller 11, and the other end of the fourth resistor R4 is connected to a forward voltage.
  • the first switching tube Q1 may be a triode or a MOS tube.
  • the first switch tube Q1 isolates the controller 11 from the battery charging control circuit to play a protective role. At the same time, the first switch tube Q1 is also used to generate a start signal to pass the controller 11 The working state of the switch circuit 13 is controlled.
  • the fourth resistor R4 acts as a voltage divider.
  • the switch circuit 13 includes: a third switch tube Q3 and a tenth resistor R10;
  • the control end of the third switch tube Q3 is connected to the controller 11, one end of the third switch tube Q3 is grounded, and the other end of the third switch tube Q3 is connected to the second port.
  • the port VSG of the controller 11 is connected to the control terminal of the third switch tube Q3.
  • One end of the tenth resistor R10 is connected to the control end of the third switch tube Q3, and the other end of the tenth resistor R10 is connected to one end of the third switch tube Q3.
  • the third switch tube may be a triode or a MOS tube, and the control end of the third switch tube is connected to the controller 11, and when the controller 11 sends the start signal to the third switch tube At Q3, the third switching tube Q3 is switched to the on state.
  • the specific charging process is:
  • the first switch tube Q1 and the negative electrode of the battery form a first current loop, and the current flow of the first current loop is the positive electrode of the battery, the first resistor R1, the second diode D2, the second resistor R2, the first optocoupler U1, or The first switch tube Q1, the negative electrode of the battery.
  • the first optocoupler U1 or the first switch tube Q1 generates a start signal and sends it to the controller 11, and the controller 11 controls the switch circuit 13 to be turned on after a delay, wherein the start signal is at a low level, so
  • the first current in the first current loop causes the first optocoupler U1 or the first switching tube Q1 to operate, pulling down the voltage across the primary side of the first optocoupler U1 or pulling down the first switching tube
  • the voltage at both ends of Q1 corresponds to the low level detected by the I/O port of the controller 11, and the controller 11 controls the switch circuit 13 to be in an on state.
  • a second current loop is formed.
  • the second current loop is the first power source Power, the first diode, the battery anode, the battery cathode, and the switch circuit
  • the current flow of the second current loop is the first power source Power, the first diode, and the battery anode.
  • the negative electrode of the battery, the switch circuit, the second current loop, the second current is greater than the first current, and the battery is in a charging state.
  • the third current loop includes the first power source Power, the second power source, and the second power source.
  • the current flow of the third current loop is the first power source Power, the second diode D2, the first optocoupler U1, the second resistor R2, and the third resistor. R3 and ground. Because the resistance of the third resistor R3 is sufficiently large, the current of the third current loop is not sufficient to drive the first optocoupler U1 and the first switch Q1 to conduct. Therefore, the switch circuit 13 is in an off state.
  • the battery charging control circuit includes: a switch circuit; a start circuit connected to the switch circuit, the start circuit includes a first port and a second port, when the positive electrode of the battery is connected to In the first port, the negative electrode of the battery is connected to the second port, and when the switch circuit is in an off state, the startup circuit and the battery form a first current loop, so that the startup circuit generates The start signal, wherein the current flowing through the battery is the first current; the controller is respectively connected to the switch circuit and the start circuit, and is used for delaying control of the switch circuit to be in conduction according to the start signal.
  • the on state so that the starting circuit, the switch circuit, and the battery form a second current loop, wherein the current flowing through the battery is a second current, and the second current is greater than the first current.
  • the start signal is generated by the first current loop generated by the normal connection of the battery, so that the second current loop is turned on with a delay to charge the battery, and the ignition phenomenon of the battery during charging is avoided.
  • FIG. 5 is a schematic diagram of a battery charging control circuit provided by an embodiment of the present invention.
  • the battery charging control circuit 100 provided by the embodiment of the present invention will be described in detail below with reference to FIG. 5.
  • the battery charging control circuit 100 further includes a reverse connection detection circuit 14.
  • the input end of the reverse connection detection circuit 14 is connected to the second port B-, and the output of the reverse connection detection circuit 14 Terminal is electrically connected to the controller 11;
  • the reverse connection detection circuit 14 is used In response to the excitation of the battery, a reverse connection detection signal is generated, so that the controller 11 controls the switch circuit 13 to be in a cut-off state according to the reverse connection detection signal.
  • the reverse connection detection circuit 14 is used to detect whether the battery is reversely connected to the battery charging control circuit 100 (the negative electrode of the battery is connected to the first port, and the positive electrode of the battery is connected to the first port. Two ports), if yes, control the switch circuit 13 to be in an off state to prevent reverse charging of the battery.
  • the output terminal of the reverse connection detection circuit 14 is connected to the I/O port of the controller 11.
  • the controller 11 receives the reverse connection detection signal sent by the reverse connection detection circuit 14 through the I/O port, it controls the switch circuit 13 to be in an off state to avoid reverse charging of the battery.
  • the reverse connection detection circuit 14 includes:
  • the third current limiting circuit 141 is electrically connected to the second port B-;
  • the second trigger circuit 142 is electrically connected to the third current limiting circuit 141;
  • the third current limiting circuit 141 is connected to the The second trigger circuit 142 forms a fourth current loop, so that the second trigger circuit 132 generates a reverse connection detection signal.
  • one end of the second trigger circuit 142 is connected to a first power source Power, and the first power source Power is the same as the first power source Power connected to the startup circuit 12 to ensure that the second trigger circuit 142 is There is no pressure difference.
  • the battery is connected in the reverse direction (the negative electrode of the battery is connected to the first port B+, and the positive electrode of the battery is connected to the second port B-), the current of the battery flows through the third port.
  • the current limiting circuit 141 and the second trigger circuit 142 enable the second trigger circuit to send a reverse connection detection signal to the controller 11 so that the controller 11 controls the switch circuit 13 to be in an off state.
  • the switch circuit 13 is still in an off state, in other words, the reverse connection
  • the priority of the detection signal is greater than the priority of the start signal.
  • the third current limiting circuit 141 includes: a third diode D3 and a fifth resistor R5;
  • the anode of the third diode D3 is connected to the second port B-, and the cathode of the third diode D3 is connected to one end of the fifth resistor R5;
  • the other end of the fifth resistor R5 is electrically connected to the second trigger circuit 142 and is connected to the first power source Power.
  • the third diode D3 and the fifth resistor R5 are used for current limiting and voltage dividing.
  • the third current limiting circuit 141 further includes: a ninth resistor R9;
  • One end of the ninth resistor R9 is connected to the other end of the fifth resistor R5, and the other end of the ninth resistor R9 is connected to the first power source Power.
  • the function of the ninth resistor R9 is a partial pressure.
  • the second trigger circuit 142 includes: a second optocoupler U2 and a sixth resistor R6;
  • One end of the primary side of the second optocoupler U2 is electrically connected to the other end of the fifth resistor R5, the other end of the primary side of the second optocoupler U2 is connected to the first power source Power, and the second optocoupler U2 One end of the secondary side is electrically connected to one end of the sixth resistor R6, and the other end of the secondary side of the second optocoupler U2 is grounded;
  • One end of the sixth resistor R6 is connected to the controller 11, and the other end of the sixth resistor R6 is connected to a second power source.
  • one end of the sixth resistor R6 is connected to the port BAT_Reverse of the controller 11, and the forward voltage may be 3.3V.
  • the second power source may be a forward voltage of 3.3V.
  • the second optocoupler U2 isolates the controller 11 from the power circuit for protection, and the second optocoupler U2 is also used to generate a reverse connection detection signal to control the controller 11
  • the switch circuit 13 is in an off state.
  • the sixth resistor R6 acts as a voltage divider.
  • the second trigger circuit 142 includes: a second switch tube Q2 and a sixth resistor R6;
  • the control terminal of the second switch tube Q2 is connected to the other end of the fifth resistor R5, one end of the second switch tube Q2 is electrically connected to one end of the sixth resistor R6, and the second switch tube Q2 is electrically connected to one end of the sixth resistor R6.
  • the other end is connected to the first power source Power;
  • One end of the sixth resistor R6 is connected to the controller 11, and the other end of the sixth resistor R6 is connected to a second power source.
  • the second switching tube Q2 may be a triode or a MOS tube.
  • the second switch tube Q2 isolates the controller 11 from the power supply circuit for protection, and at the same time, the second switch tube Q2 is also used to generate a reverse connection detection signal to control the controller 11
  • the switch circuit 13 is in an off state.
  • the sixth resistor R6 acts as a voltage divider.
  • the coupling U2 or the second switching tube Q2 and the first power supply Power form a fourth current loop, and the current flow of the fourth current loop is the positive electrode of the battery, the third diode D3, the fifth resistor R5, and the second optocoupler.
  • the second optocoupler U2 or the second switching tube Q2 When the fourth current loop is formed, the second optocoupler U2 or the second switching tube Q2 generates a reverse connection detection signal and sends it to the controller 11, so that the controller 11 controls the operation of the switching circuit 13 In the cut-off state, it is ensured that the battery will not be reversely charged and the safety performance is improved.
  • the battery charging control circuit includes: a switch circuit; a start circuit connected to the switch circuit, the start circuit includes a first port and a second port, when the positive electrode of the battery is connected to In the first port, the negative electrode of the battery is connected to the second port, and when the switch circuit is in an off state, the startup circuit and the battery form a first current loop, so that the startup circuit generates The start signal, wherein the current flowing through the battery is the first current; the controller is respectively connected to the switch circuit and the start circuit, and is used for delaying control of the switch circuit to be in conduction according to the start signal.
  • the on state so that the starting circuit, the switch circuit, and the battery form a second current loop, wherein the current flowing through the battery is a second current, and the second current is greater than the first current.
  • the start signal is generated by the first current loop generated by the normal connection of the battery, so that the second current loop is turned on with a delay to charge the battery, and the ignition phenomenon of the battery during charging is avoided.
  • FIG. 7 is a schematic diagram of a battery charging control circuit provided by an embodiment of the present invention.
  • the battery charging control circuit 100 provided by the embodiment of the present invention will be described in detail below with reference to FIG. 7.
  • the battery charging control circuit 100 also includes a reverse connection prompt circuit 15.
  • the input end of the reverse connection prompt circuit 15 is connected to the second port B-, and the output end of the reverse connection prompt circuit 15 is connected to the start circuit. 12 connections;
  • the reverse connection prompt circuit 15 is used for In response to the excitation of the battery, a reverse connection prompt signal is generated.
  • the reverse connection prompt signal may be an optical signal for prompting the user that the battery is connected to the battery charging control circuit 100 incorrectly.
  • the reverse connection prompt circuit 15 includes: a seventh resistor R7 and a light emitting diode D4;
  • One end of the seventh resistor R7 is connected to the second port B-, and the other end of the seventh resistor R7 is connected to the anode of the light emitting diode D4;
  • the cathode of the light emitting diode D4 is electrically connected to the anode of the first diode D1.
  • the seventh resistor R7 is used for voltage division and current limiting.
  • the light emitting diode D4 is used when the battery is reversely connected to the battery charging control circuit 100 (when the positive pole of the battery is connected to the second port B-, and the negative pole of the battery is connected to the first One port B+) lights up to remind the user of a battery connection error.
  • the battery charging control circuit 100 When the battery is reversely connected to the battery charging control circuit 100 (when the positive pole of the battery is connected to the second port B-, and the negative pole of the battery is connected to the first port B+), the The anode of the battery, the seventh resistor R7, the light emitting diode D4, the first diode and the cathode of the battery form a fifth current loop, and the current of the fifth current flows to the anode of the battery, the seventh resistor R7, the light emitting diode D4, and the A diode is connected to the negative electrode of the battery, and when the fifth current loop is formed, the light-emitting diode D4 emits light to prompt the user of a battery connection error.
  • the battery charging control circuit includes: a switch circuit; a start circuit connected to the switch circuit, the start circuit includes a first port and a second port, when the positive electrode of the battery is connected to In the first port, the negative electrode of the battery is connected to the second port, and when the switch circuit is in an off state, the startup circuit and the battery form a first current loop, so that the startup circuit generates The start signal, wherein the current flowing through the battery is the first current; the controller is respectively connected to the switch circuit and the start circuit, and is used for delaying control of the switch circuit to be in conduction according to the start signal.
  • the on state so that the starting circuit, the switch circuit, and the battery form a second current loop, wherein the current flowing through the battery is a second current, and the second current is greater than the first current.
  • the start signal is generated by the first current loop generated by the normal connection of the battery, so that the second current loop is turned on with a delay to charge the battery, and the ignition phenomenon of the battery during charging is avoided.
  • FIG. 8 is an electronic device 200 provided by an embodiment of the present invention, including a battery 300 and the aforementioned battery charging control circuit 100.
  • the electronic device 200 is used to prevent reverse charging and ignition of the battery.
  • the battery may be a lithium battery, a nickel-cadmium battery, or other storage batteries.
  • the electronic device 200 includes a battery 300 and the battery charging control circuit 100 as described above, and the battery 300 is connected to the battery charging control circuit 100.
  • the battery 300 can be used to provide power for various electronic devices, such as aircraft (such as drones, etc.), automobiles, electric bicycles, terminal devices, wearable devices, and so on.
  • the electronic device includes a battery and a battery charging control circuit
  • the battery charging control circuit includes: a switch circuit; a start circuit connected to the switch circuit, the start circuit includes a first port and a first port Two ports, when the positive pole of the battery is connected to the first port, the negative pole of the battery is connected to the second port, and the switch circuit is in the off state, the starting circuit and the battery form a first A current loop to make the starting circuit generate a starting signal, wherein the current flowing through the battery is the first current; the controller is respectively connected to the switch circuit and the starting circuit, and is used for starting according to the starting Signal, delay control the switch circuit to be in the conducting state, so that the start circuit, the switch circuit and the battery form a second current loop, wherein the current flowing through the battery is the second current, so The second current is greater than the first current.
  • the start signal is generated by the first current loop generated by the normal connection of the battery, so that the second current loop is turned on with a delay to charge the battery, and the ignition

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Circuit de commande de charge de batterie et dispositif électronique. Le circuit de commande de charge de batterie comprend : un circuit de commutation (103) ; un circuit de démarrage (102), le circuit de démarrage (102) comprenant un premier port (B+) et un second port (B-), et lorsque l'électrode positive d'une batterie est électriquement connectée au premier port (B+), l'électrode négative de la batterie est électriquement connectée au second port (B-), le circuit de commutation (103) est dans un état de coupure, et le circuit de démarrage (102) et la batterie forment une première boucle de courant, de telle sorte que le circuit de démarrage (102) génère un signal de départ, le courant circulant à travers la batterie étant un premier courant ; et un dispositif de commande (101) pour commander de manière retardée, en fonction du signal de démarrage, le circuit de commutation (103) à être dans un état conducteur, de sorte que le circuit de démarrage (102), le circuit de commutation (103) et la batterie forment une seconde boucle de courant. Un signal de démarrage est généré par une première boucle de courant produite par un accès normal d'une batterie, de telle sorte qu'une seconde boucle de courant est démarrée de manière retardée pour charger la batterie, ce qui permet d'empêcher un phénomène d'étincelle lorsque la batterie est chargée.
PCT/CN2020/110589 2019-08-23 2020-08-21 Circuit de commande de charge de batterie et dispositif électronique WO2021036946A1 (fr)

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CN201910784850.8A CN110380492B (zh) 2019-08-23 2019-08-23 一种电池充电控制电路及电子设备
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110380492B (zh) * 2019-08-23 2021-03-02 深圳市道通智能航空技术有限公司 一种电池充电控制电路及电子设备
CN112366790A (zh) * 2020-11-19 2021-02-12 深圳市华思旭科技有限公司 智能连接装置、启动电源以及电瓶夹
CN114123434B (zh) * 2022-01-27 2022-04-15 深圳市高端无人机有限公司 电源电路及电子设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1138768A (zh) * 1995-06-20 1996-12-25 明碁电脑股份有限公司 电池充电器
US20080239603A1 (en) * 2007-03-27 2008-10-02 Eaglepicher Energy Products Corporation Battery protection circuit for lithium cabon monofluoride battery
CN203481904U (zh) * 2013-09-24 2014-03-12 漳州市东方智能仪表有限公司 具有电池反接检测和保护的充电器
CN106600853A (zh) * 2016-12-06 2017-04-26 青岛海信智能商用系统股份有限公司 用于充电底座的充电或信号传输防抖动电路及充电底座
CN107134825A (zh) * 2017-05-09 2017-09-05 宇能电气有限公司 一种基于自适应充电技术的蓄电池反接保护电路
CN109910797A (zh) * 2019-03-07 2019-06-21 深圳市电将军科技有限公司 一键启动汽车的应急用智能电瓶线夹及汽车启动打火方法
CN110311453A (zh) * 2019-08-20 2019-10-08 广东利元亨智能装备股份有限公司 电池反接保护电路
CN110380492A (zh) * 2019-08-23 2019-10-25 深圳市道通智能航空技术有限公司 一种电池充电控制电路及电子设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102856961A (zh) * 2012-09-25 2013-01-02 重庆永通信息工程实业有限公司 启动电池保护模块
CN205489605U (zh) * 2016-01-14 2016-08-17 深圳市创维群欣安防科技股份有限公司 一种延时启动电路和车载设备
CN206742898U (zh) * 2017-04-12 2017-12-12 深圳市金欣辉电子科技有限公司 充电宝放电电路

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1138768A (zh) * 1995-06-20 1996-12-25 明碁电脑股份有限公司 电池充电器
US20080239603A1 (en) * 2007-03-27 2008-10-02 Eaglepicher Energy Products Corporation Battery protection circuit for lithium cabon monofluoride battery
CN203481904U (zh) * 2013-09-24 2014-03-12 漳州市东方智能仪表有限公司 具有电池反接检测和保护的充电器
CN106600853A (zh) * 2016-12-06 2017-04-26 青岛海信智能商用系统股份有限公司 用于充电底座的充电或信号传输防抖动电路及充电底座
CN107134825A (zh) * 2017-05-09 2017-09-05 宇能电气有限公司 一种基于自适应充电技术的蓄电池反接保护电路
CN109910797A (zh) * 2019-03-07 2019-06-21 深圳市电将军科技有限公司 一键启动汽车的应急用智能电瓶线夹及汽车启动打火方法
CN110311453A (zh) * 2019-08-20 2019-10-08 广东利元亨智能装备股份有限公司 电池反接保护电路
CN110380492A (zh) * 2019-08-23 2019-10-25 深圳市道通智能航空技术有限公司 一种电池充电控制电路及电子设备

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