CN213585222U - Double-battery low-power-consumption controller circuit - Google Patents
Double-battery low-power-consumption controller circuit Download PDFInfo
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- CN213585222U CN213585222U CN202022504586.9U CN202022504586U CN213585222U CN 213585222 U CN213585222 U CN 213585222U CN 202022504586 U CN202022504586 U CN 202022504586U CN 213585222 U CN213585222 U CN 213585222U
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Abstract
The utility model discloses a bi-cell low-power consumption controller circuit, including the sampling unit, control unit and switch selection unit, the sampling unit is coupled the output of main battery and auxiliary battery for gather the output voltage of main battery and auxiliary battery, control unit is used for sending control signal to the control end of switch selection unit based on the output voltage of main battery and auxiliary battery, and the input of switch selection unit is coupled the positive pole of main battery, and the output is coupled the auxiliary battery positive pole, is used for according to control signal acts to control the positive pole of main battery or auxiliary battery and connects or break off; wherein the switch selection unit includes at least a magnetic latching relay. The utility model discloses a control unit and the magnetic latching relay of low-power consumption, the electric quantity of main battery is guaranteed to the electric quantity of minimum consumption battery to ensure the normal start of car.
Description
Technical Field
The utility model relates to a vehicle mounted power supply technical field especially relates to a double cell low-power consumption controller circuit.
Background
In the prior art, a battery (referred to as a main battery) and a generator are generally mounted on an automobile to supply power to various electrical components of the automobile. When the engine is not started, the accumulator supplies power to the electric appliance. After starting, the generator supplies power to the electric appliance and charges the storage battery. In actual use, the situation that the engine cannot be restarted or part of electric appliances cannot work normally after the electric quantity of the storage battery is too low due to forgetting to turn off the electric appliances or increasing the electric appliances often occurs. In order to solve the problem, an additional storage battery (called a secondary battery) is required to be added, and a dual-battery control circuit scheme is designed, wherein the dual-battery control circuit controls the charging and discharging of the secondary battery.
However, in practical applications, the power consumption of the conventional dual-battery controller is large, and the controller often consumes electricity in the secondary battery or electricity in the main battery, so that normal supply of electricity for the automobile cannot be ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bi-cell low-power consumption controller circuit adopts low-power consumption singlechip and low-power consumption relay, the electric quantity of minimum consumption battery to guarantee the start-up of car is ensured to the electric quantity of main battery.
The utility model discloses take following technical scheme to realize:
a double-battery low-power-consumption controller circuit comprises a first sampling unit, a control unit and a switch selection unit, wherein the first sampling unit is coupled with the positive electrode of a main battery and used for collecting the voltage of the main battery; wherein the switch selection unit includes at least a magnetic latching relay.
Further, when the voltage of the main battery acquired by the first sampling unit is greater than a preset threshold value, the magnetic latching relay controls the main battery to be connected with the auxiliary battery in parallel; when the voltage of the main battery acquired by the first sampling unit is smaller than a preset threshold value, the magnetic latching relay controls the main battery to be disconnected with the auxiliary battery.
The automobile generator is connected with the main battery in parallel, when the output voltage of the generator is larger than the voltage of the main battery, the main battery can be charged, the magnetic latching relay contact is closed, the auxiliary battery is connected with the main battery in parallel, and the auxiliary battery receives the generator to charge the auxiliary battery. When the output voltage of the generator is reduced to a preset threshold value, the contact of the relay is disconnected. The main battery and the auxiliary battery are disconnected, and the external power utilization circuit only consumes the electric energy of the auxiliary battery and does not consume the electric energy of the main battery.
Further, the first sampling unit at least comprises resistors R12 and R13 which are connected in series, a voltage regulator tube D7 and a capacitor C6 which are used for protecting and filtering the sampling voltage of the first acquisition unit.
Furthermore, the device also comprises a second acquisition unit coupled with the positive electrode of the secondary battery, wherein the second acquisition unit at least comprises resistors R8 and R9 which are connected in series, and a voltage regulator tube D10 and a capacitor C1 which are used for protecting and filtering the sampled voltage of the second acquisition unit.
The first sampling unit and the second sampling unit use a divider resistor to collect the voltages of the main battery and the auxiliary battery, and the single chip microcomputer of the control unit controls the magnetic latching relay to disconnect or connect the main battery and the auxiliary battery in parallel based on the collected voltages of the main battery. The voltage-stabilizing tubes D7, D10, C6 and C1 are used as protection circuits for sampling voltage anti-inversion and filtering.
Further, the control unit is a single chip IC1, a signal input pin of the control unit is coupled to the output terminal of the sampling unit, and a signal output pin of the control unit is coupled to the switch selection unit.
The single chip microcomputer is low in power consumption and high in performance, and input pins respectively input the main battery sampling voltage and the auxiliary battery sampling voltage and output control signals to the magnetic latching relay.
Further, the single-chip microcomputer power supply unit comprises diodes D1, D2 and a power supply chip U2, wherein the anode of the diode D1 is coupled with the anode of the auxiliary battery, the anode of the diode D2 is coupled with the anode of the main battery, the cathodes of the diodes D1 and D2 are coupled with the power supply input end of the power supply chip U2, and the power supply output end of the power supply chip U2 is used for providing a working power supply of the single-chip microcomputer.
The voltage of the main battery or the auxiliary battery is used as an input power supply of the stabilized voltage power supply chip, a +12V power supply is input, and +5V power is output through the stabilized voltage power supply chip and is used for supplying power to the singlechip,
furthermore, the switch selection unit also comprises a first amplification driving module and a second amplification driving module, wherein the input ends of the first amplification driving module and the second amplification driving module are respectively coupled with a signal output pin of the singlechip, and the output ends of the first amplification driving module and the second amplification driving module are respectively coupled with a control pin of the magnetic latching relay; the first amplification driving module at least comprises a triode Q2, a resistor R2 and a resistor R4, wherein one end of the resistor R4 is coupled with a first signal output pin of the singlechip, the other end of the resistor R4 and one end of the resistor R2 are coupled with a base electrode of a triode Q2, the other end of the resistor R2 and an emitter electrode of the triode Q2 are coupled with the ground, and a collector electrode of the triode Q2 is coupled with a first control pin of the magnetic latching relay; the second amplification driving module at least comprises a triode Q3, a resistor R1 and a resistor R14, one end of the resistor R14 is coupled with a second signal output pin of the singlechip, the other end of the resistor R14 and one end of the resistor R1 are coupled with a base electrode of a triode Q3, the other end of the resistor R1 and an emitter electrode of the triode Q3 are coupled with the ground, and a collector electrode of the triode Q3 is coupled with a second control pin of the magnetic latching relay.
The two amplification driving modules are used for amplifying and converting the signals output by the control unit into pulse signals to drive the magnetic latching relay to act.
Further, the battery pack further comprises a manual selection unit, wherein the manual selection unit is coupled with an input pin of the single chip microcomputer and at least comprises a switch K1 for controlling the main battery and the auxiliary battery to be connected or disconnected in parallel.
The switch K1 is used for inputting the manual control signal of singlechip, control singlechip and output corresponding control signal control magnetic latching relay closure, make parallelly connected or break between main battery and the auxiliary battery.
The device further comprises a first test indication unit for indicating the power state of the main battery, a second test indication unit for indicating the power state of the auxiliary battery and a current detection indication unit, wherein the first test indication unit at least comprises a light-emitting diode D11 and a resistor R10 which are connected in series, and the second test indication unit at least comprises a light-emitting diode D4 and a resistor R15 which are connected in series. The current detection indicating unit at least comprises a current detection module R20 and a display interface J10, wherein the input of R20 of the current detection module is respectively coupled with the negative electrodes of the main battery and the auxiliary battery, the output of the R20 of the current detection module is coupled with the display interface J10, and the display interface J10 is used for being coupled with an external display device for displaying parameters of the main battery and/or the auxiliary battery.
The luminous indicating lamp indicates the power supply state of the current main battery and the current auxiliary battery, and when no electricity exists or the power line is not well connected, the luminous indicating lamp flickers to prompt the corresponding state. The current detection module R20 is used for detecting the current of the main battery and the auxiliary battery, sending the detection parameters to an external display device through the display interface J10 and displaying the detection parameters intuitively.
Furthermore, the alarm device also comprises an alarm unit for prompting the power state, wherein the alarm unit at least comprises a triode Q5 which is coupled with the buzzer B1 and is used for driving the buzzer B1.
If the control unit detects that the electric quantity of the main battery or the auxiliary battery is insufficient, the buzzer can give out a warning prompt.
The utility model has the following technical advantages or beneficial effects:
1. the magnetic latching relay with low power consumption is adopted, so that the power consumption of the double-battery controller is extremely low, and the electric quantity of the battery is extremely low.
2. After the automobile is started, the main battery and the auxiliary battery are connected in parallel through the double-battery controller to charge the main battery and the auxiliary battery, and after the automobile is flamed out, the main battery and the auxiliary battery are disconnected through the double-battery controller, so that an external power utilization circuit is powered only through the auxiliary battery, the electric energy of the main battery is not consumed, and the normal starting of the automobile is ensured.
3. When the electric quantity of the main battery is insufficient, the auxiliary battery supplies power to the main battery to ensure normal starting of the automobile.
4. The parallel connection and disconnection of the main battery and the auxiliary battery of the automobile can be controlled through a manual switch.
5. The electric quantity of the main battery and the auxiliary battery and the state of the output power supply can be monitored and alarmed, and abnormity can be found in time.
Drawings
FIG. 1 is a schematic diagram of the module composition and connection relationship of the dual-battery low-power controller circuit of the present invention;
FIG. 2 is a schematic circuit diagram of a sampling unit of the dual-battery low-power controller circuit according to an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of an embodiment of a control unit of the dual-battery low-power controller circuit of the present invention;
FIG. 4 is a schematic circuit diagram of an embodiment of a manual selection unit of the dual-battery low-power controller circuit of the present invention;
FIG. 5 is a schematic circuit diagram of a first test indication unit and a second test indication unit of the dual-battery low-power controller circuit according to the present invention;
FIG. 6 is a schematic circuit diagram of an embodiment of a current detection indicating unit of the dual-battery low-power controller circuit of the present invention;
FIG. 7 is a schematic circuit diagram of an embodiment of an alarm unit of the dual-battery low-power controller circuit of the present invention;
FIG. 8 is a schematic circuit diagram of an embodiment of a power supply unit of a single chip microcomputer of the dual-battery low-power controller circuit of the present invention;
fig. 9 is a schematic circuit diagram of an embodiment of a switch selection unit of the dual-battery low-power controller circuit of the present invention.
Detailed Description
In order to facilitate better understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are given by way of illustration only and do not limit the scope of the present invention.
As shown in fig. 1, for the present invention, the schematic diagram of the composition and connection relationship of the dual-battery low-power controller circuit includes a first sampling unit coupled to the main battery, a control unit and a switch selection unit, wherein the first sampling unit is coupled to the positive electrode of the main battery for collecting the voltage of the main battery, the control unit is configured to send a control signal to the control terminal of the switch selection unit based on the voltage of the main battery, the input terminal of the switch selection unit is coupled to the positive electrode of the main battery, and the output terminal of the switch selection unit is coupled to the positive electrode of the auxiliary battery for acting according to the control signal, so as to control the positive electrodes of the main battery and the auxiliary battery to be connected; wherein the switch selection unit includes at least a magnetic latching relay.
The device also comprises a manual selection unit, a second sampling unit, a singlechip power supply unit and a current detection indicating unit. The manual selection unit can control the main battery to be connected in parallel with the auxiliary battery or to be disconnected by closing and opening the switch. The second sampling unit is coupled with the anode of the auxiliary battery and used for collecting the voltage of the auxiliary battery. The singlechip power supply unit provides stable working voltage for the control unit. The current detection indication can detect the current values of the main battery and the auxiliary battery, and is coupled with external display equipment through a display interface to display parameters of the main battery and/or the auxiliary battery. The alarm unit can also give an alarm by a buzzer when the voltage and the electric quantity of the battery are low or the main battery and the auxiliary battery are not in good contact with the terminal. Because the on-off state of the magnetic latching relay is triggered by a pulse signal, when the contact is in a holding state, the coil does not need to be electrified continuously, and the state of the relay can be maintained unchanged only by the magnetic force of the permanent magnet, so that the power consumption of the magnetic latching relay is low, the power consumption of a battery is extremely low, and the problem of high power consumption of a double-battery low controller is solved.
The present invention will be described in further detail with reference to the specific embodiments shown in fig. 2-9.
As shown IN fig. 2, for the utility model relates to a first sampling unit and second sampling unit of bi-cell low-POWER consumption controller circuit, resistance R12's one end is as the input of first sampling unit MAIN battery voltage POWER _ IN, and resistance R12's the other end, resistance R13's one end, stabilivolt D7's negative pole and electric capacity C6's one end are as first sampling unit output MAIN battery sampling voltage AD _ MAIN to the control unit. One end of the resistor R8 serves as the input end of the second sampling unit to input the sub-battery voltage FBAT _ IN, the other end of the resistor R8, one end of the resistor R9, the cathode of the voltage regulator tube D10 and one end of the capacitor C1 serve as the output end of the second sampling unit to output the sub-battery sampling voltage AD _ FU to the control unit. The MAIN battery sampling voltage AD _ MAIN and the auxiliary battery sampling voltage AD _ FU are respectively obtained by dividing the MAIN battery voltage and the auxiliary battery voltage through resistors.
Specifically, the resistance values of R8 and R12 are 68K Ω, the models of voltage regulators D7 and D10 are 5V0, and the capacitance values of capacitors C1 and C6 are 100 nf.
As shown in fig. 3, in order to provide the control unit of the dual-battery low-power controller circuit of the present invention, in an embodiment of the present invention, the pin 3 of the single chip IC1 inputs AD _ FU, the pin 5 inputs AD _ MAIN, and the pins 16 and 14 output level signals to the switch selection unit.
The pin 10 of the single chip IC1 is further coupled to a manual selection unit shown in fig. 4, the manual selection unit includes a switch K1 and a resistor R5, one pin of the switch K1 is coupled to ground, one end of the other pin and the resistor R5 is coupled to the pin 10 of the single chip IC1, and the other end of the resistor R5 is coupled to the power VCC. Pins 6 and 7 are coupled to the first test indication unit and the second test indication unit of the switch selection unit, as shown in fig. 5, one ends of resistors R10 and R15 are coupled to ground, the other ends of resistors R10 and R15 are coupled to cathodes of leds D11 and D4, respectively, anodes of the leds are connected to pins 6 and 7 of the single chip IC1, respectively, and correspond to the indicator light signal of the main battery and the indicator light signal of the sub-battery, respectively. The 12-pin coupling indication unit is shown in fig. 6. The pin 13 is coupled to the alarm unit, as shown in fig. 7, the alarm unit includes a buzzer B1, a resistor R6, and a transistor Q5, one end of the resistor R6 is coupled to the pin 12 of the monolithic IC1, the other end is coupled to the base of the transistor Q5, the collector of the transistor Q5 is coupled to the pin 2 of the buzzer B1, the emitter is coupled to ground, and the pin 1 of the buzzer B1 is coupled to a +12V power supply.
Specifically, the single chip microcomputer is HT66F0031, and is a flash MCU with low power consumption and high performance.
As shown IN fig. 8, for the present invention, the input of the POWER chip U2 is coupled to the positive electrode of the capacitor C2, one end of the capacitor C4 and one end of the resistor R11 are coupled to the one end of the capacitor C5 and the positive electrode of the capacitor C3, the other end of the resistor R11 is coupled to the cathode of the diode D1 and the cathode of the diode D2, the anode of the diode D1 is coupled to the voltage FBAT _ IN of the secondary battery, and the anode of the diode D2 is coupled to the voltage POWER supply of the primary battery, that is, the POWER input of the POWER chip U2 can work and output +5V for supplying POWER to the single chip when the primary battery or the secondary battery is powered.
Specifically, the model of the power supply chip U2 is ME 6209.
As shown in fig. 9, for the switch selecting unit of the dual-battery low-power controller circuit of the present invention, the first amplification driving module and the second amplification driving module of the switch selecting unit are used for respectively controlling the control pins of the magnetic latching relay J7. One end of the first amplification driving module resistor R4 is coupled to the pin 14 of the singlechip, the other end and one end of the resistor R2 are coupled to the base of the transistor Q2, the other end of the resistor R2 and the emitter of the transistor Q2 are coupled to the ground, and the collector of the transistor Q2 is coupled to the pin 3 of the magnetic latching relay J7. One end of a resistor R14 of the second amplification driving module is coupled with a pin 16 of the singlechip, the other end of the resistor R1 and one end of a resistor Q3 are coupled with a base electrode of a triode Q3, the other end of the resistor R1 and an emitter electrode of the triode Q3 are coupled with the ground, a collector electrode of a triode Q3 is coupled with a pin 1 of a magnetic latching relay J7, a pin 2 of the magnetic latching relay J7 is coupled with +12V, and a pin 4 and a pin 5 are respectively coupled with a main battery voltage POWER _ IN and an auxiliary battery voltage FBAT _ IN.
Specifically, the magnetic latching relay J7 is HFE 22-A-12.
In one embodiment of the invention, the single chip IC1 senses the main battery. The automobile generator is connected with the main battery in parallel, and the external electric equipment is connected with the auxiliary battery. The sampling unit collects the input voltage POWER _ IN of the MAIN battery through the voltage dividing resistor and outputs the sampling voltage AD _ MAIN of the MAIN battery to the control unit. When an automobile is started, the output voltage of the automobile generator after power generation is increased by 14.5V and is greater than the voltage of a storage battery by 12V, the generator charges a main battery, and the output voltage of the main battery collected by a sampling unit is greater than 13.2V, a control unit sends out a low level signal which is a pulse signal through a first amplification driving module and is output to a first control pin of a magnetic latching relay coil, a contact of the magnetic latching relay is closed, the main battery is connected with an auxiliary battery in parallel, and the auxiliary battery is also charged by the generator. After the automobile is flamed out, the generator does not generate power any more, the voltage of the main battery collected by the sampling unit is smaller than 12.8V, the control unit sends a low level signal, the low level signal is converted into a pulse signal through the second amplification driving module, the second control pin of the magnetic latching relay coil is controlled, the relay contact is disconnected, the main battery and the auxiliary battery are disconnected, and external electric equipment only consumes the electric energy of the auxiliary battery.
The above description of the embodiments is only intended to help understand the method of the present invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A kind of double-battery low-power consumption controller circuit, its characteristic is: the device comprises a first sampling unit, a control unit and a switch selection unit, wherein the first sampling unit is coupled with the anode of a main battery and used for collecting the voltage of the main battery; wherein the switch selection unit includes at least a magnetic latching relay.
2. The dual-battery low-power-consumption controller circuit of claim 1, wherein: when the voltage of the main battery acquired by the first sampling unit is greater than a preset threshold value, the magnetic latching relay controls the main battery and the auxiliary battery to be connected in parallel; when the voltage of the main battery acquired by the first sampling unit is smaller than a preset threshold value, the magnetic latching relay controls the main battery to be disconnected with the auxiliary battery.
3. The dual-battery low-power-consumption controller circuit of claim 1, wherein: the first sampling unit at least comprises resistors R12 and R13 which are connected in series, a voltage regulator tube D7 and a capacitor C6 which are used for protecting and filtering the sampling voltage of the first sampling unit.
4. The dual-battery low-power-consumption controller circuit of claim 1, wherein: the secondary battery voltage sampling circuit further comprises a second acquisition unit coupled with the positive electrode of the secondary battery, wherein the second acquisition unit at least comprises resistors R8 and R9 which are connected in series, and a voltage regulator tube D10 and a capacitor C1 which are used for protecting and filtering the sampled voltage of the second acquisition unit.
5. The dual-battery low-power-consumption controller circuit of claim 3, wherein: the control unit is a singlechip IC1, a signal input pin of the control unit is coupled with the output end of the sampling unit, and a signal output pin of the control unit is coupled with the switch selection unit.
6. The dual-battery low-power-consumption controller circuit as claimed in claim 5, wherein: the single-chip microcomputer power supply unit at least comprises diodes D1, D2 and a power supply chip U2, wherein the anode of the diode D1 is coupled with the anode of the auxiliary battery, the anode of the diode D2 is coupled with the anode of the main battery, the cathodes of the diodes D1 and D2 are coupled with the power supply input end of the power supply chip U2, and the power supply output end of the power supply chip U2 is used for providing a working power supply of the single-chip microcomputer.
7. The dual-battery low-power-consumption controller circuit as claimed in claim 5, wherein: the switch selection unit also comprises a first amplification driving module and a second amplification driving module, wherein the input ends of the first amplification driving module and the second amplification driving module are respectively coupled with a signal output pin of the singlechip, and the output ends of the first amplification driving module and the second amplification driving module are respectively coupled with a control coil pin of the magnetic latching relay; the first amplification driving module at least comprises a triode Q2, a resistor R2 and a resistor R4, wherein one end of the resistor R4 is coupled with a first signal output pin of the singlechip, the other end of the resistor R4 and one end of the resistor R2 are coupled with a base electrode of a triode Q2, the other end of the resistor R2 and an emitter electrode of the triode Q2 are coupled with the ground, and a collector electrode of the triode Q2 is coupled with a first control pin of the magnetic latching relay;
the second amplification driving module at least comprises a triode Q3, a resistor R1 and a resistor R14, one end of the resistor R14 is coupled with a second signal output pin of the singlechip, the other end of the resistor R14 and one end of the resistor R1 are coupled with a base electrode of a triode Q3, the other end of the resistor R1 and an emitter electrode of the triode Q3 are coupled with the ground, and a collector electrode of the triode Q3 is coupled with a second control pin of the magnetic latching relay.
8. A dual battery low power controller circuit according to any of claims 1 to 7, wherein: the battery pack also comprises a manual selection unit, wherein the manual selection unit is coupled with an input pin of the singlechip and at least comprises a switch K1 for controlling the parallel connection or disconnection of the main battery and the auxiliary battery.
9. A dual battery low power controller circuit according to any of claims 1 to 7, wherein: the device also comprises a first test indication unit for indicating the power state of the main battery, a second test indication unit for indicating the power state of the auxiliary battery and a current detection indication unit for indicating the parameter of the battery, wherein the first test indication unit at least comprises a light-emitting diode D11 and a resistor R10 which are connected in series, and the second test indication unit at least comprises a light-emitting diode D4 and a resistor R15 which are connected in series;
the current detection indicating unit at least comprises a current detection module R20 and a display interface J10, wherein the input of R20 of the current detection module is respectively coupled with the negative electrodes of the main battery and the auxiliary battery, the output of the R20 of the current detection module is coupled with the display interface J10, and the display interface J10 is used for being coupled with an external display device for displaying parameters of the main battery and/or the auxiliary battery.
10. A dual battery low power controller circuit according to any of claims 1 to 7, wherein: the alarm device also comprises an alarm unit for prompting the power state, wherein the alarm unit at least comprises a buzzer B1 and a triode Q5 for driving the buzzer B1.
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| CN202022504586.9U CN213585222U (en) | 2020-11-03 | 2020-11-03 | Double-battery low-power-consumption controller circuit |
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| CN202022504586.9U CN213585222U (en) | 2020-11-03 | 2020-11-03 | Double-battery low-power-consumption controller circuit |
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