CN-122026720-A - Voltage-multiplying driving circuit of bistable pulse valve and control method thereof

CN122026720ACN 122026720 ACN122026720 ACN 122026720ACN-122026720-A

Abstract

The invention discloses a voltage doubling drive circuit of a bistable pulse valve and a control method thereof, wherein the voltage doubling drive circuit comprises a control module, a battery input module, a capacitor voltage doubling module and a pulse drive module; the capacitor voltage doubling module comprises a capacitor C1, a capacitor C2, a diode D1, a switching tube V1 and a switching tube V2, wherein the switching tube V1 controls whether the capacitor C2 is charged or not, the switching tube V2 controls whether the capacitor C1 and the capacitor C2 are connected in series or not, the battery input module is connected with the input end of the capacitor voltage doubling module, the pulse driving module is connected with the output end of the capacitor voltage doubling module, and the control module controls the on-off of the switching tube V1 and the switching tube V2. The invention can drive the bistable pulse valve to switch under lower power supply voltage and has the advantage of low standby power consumption.

Inventors

LIN CHUNHUI
XIE PENGWEI
WU HUAFENG

Assignees

沛乐迪(厦门)科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260130

Claims (13)

1. The voltage doubling driving circuit of the bistable pulse valve is characterized by comprising a control module, a battery input module, a capacitor voltage doubling module and a pulse driving module; The capacitor voltage doubling module comprises a capacitor C1, a capacitor C2, a diode D1, a switch tube V1 and a switch tube V2, types of the switch tube V1 and the switch tube V2 are complementary, the positive electrode of the capacitor C1, the second electrode of the switch tube V2 and the positive electrode of the diode D1 are connected with the input end of the capacitor voltage doubling module, the negative electrode of the capacitor C1 and the first electrode of the switch tube V1 are grounded, the positive electrode of the capacitor C2 and the negative electrode of the diode D1 are connected with the output end of the capacitor voltage doubling module, the negative electrode of the capacitor C2 is connected with the first electrode of the switch tube V2 and the second electrode of the switch tube V1, and the control electrode of the switch tube V1 and the control electrode of the switch tube V2 are respectively connected with the first control end and the second control end of the capacitor voltage doubling circuit; The battery input module is provided with a battery connection port J1, the positive electrode of the battery connection port J1 is connected with the input end of the capacitance voltage doubling module, and the negative electrode of the battery connection port J1 is grounded; the pulse driving module is connected with the output end of the capacitance voltage doubling module and is powered by the capacitance voltage doubling module; the control module is connected with the first control end and the second control end of the capacitor voltage doubling circuit respectively and controls the on-off of the switching tube V1 and the switching tube V2, and the control module is connected with the pulse driving module and controls the work of the pulse driving module.
2. The voltage doubling drive circuit of a bistable pulse valve of claim 1, further comprising a capacitor voltage detection module, wherein an input end of the capacitor voltage detection module is connected with an anode of a capacitor C2, and an output end of the capacitor voltage detection module is connected with the control module.
3. The voltage doubling drive circuit of a bistable pulse valve of claim 1, further comprising a command input module, wherein the command input module is connected with the control module.
4. The voltage doubling drive circuit of a bistable pulse valve of claim 1, further comprising a battery voltage detection module, wherein an input end of the battery voltage detection module is connected with an anode of a battery connection port J1, and an output end of the battery voltage detection module is connected with the control module.
5. The voltage doubling drive circuit of a bistable pulse valve of claim 1, further comprising an alarm module connected with the control module.
6. The voltage doubling driving circuit of a bistable pulse valve of claim 1, wherein the power end of the control module is connected with the positive electrode of a battery connection port J1, and the grounding end of the control module is grounded.
7. The voltage doubling drive circuit of a bistable pulse valve of claim 1, wherein the control module is connected with a first control end and a second control end of the capacitance voltage doubling circuit through a resistor R1 and a resistor R2 respectively.
8. The voltage doubling drive circuit of a bistable pulse valve of claim 1, wherein the pulse drive module comprises a bridge drive chip U2, a VDD pin of the bridge drive chip U2 is connected with an output end of the capacitance voltage doubling circuit, INA pins and INB pins of the bridge drive chip U2 are respectively connected with a control module, AGND pins and BGND of the bridge drive chip U2 are grounded, and the control module comprises a singlechip chip U1.
9. The method for controlling a voltage doubling drive circuit of a bistable pulse valve according to claim 1, comprising the following steps in sequence: Step S1, a battery connection port J1 is connected with a power supply battery, a pulse driving module is connected with a bistable pulse valve, and a control module is used for power-on initialization; step S2, the control module detects whether a switching instruction is input, and when the control module detects the switching instruction input, the step S3 is entered; The control module controls the switch tube V1 to be conducted and controls the switch tube V2 to be cut off so as to charge the capacitor C2, and after the capacitor C2 is charged, the control module controls the switch tube V1 to be cut off and then controls the switch tube V2 to be conducted so as to enable the capacitor C2 and the capacitor C1 to be connected in series and enable the voltage of the capacitor C2 and the voltage of the capacitor C1 to be superposed; And S4, the control module firstly controls the pulse driving module to output a pulse signal for driving the bistable pulse valve to switch in the set driving time, then controls the switching tube V2 to be cut off so that the capacitance doubling module enters a standby state, and the step S2 is repeated.
10. The control method of claim 9, wherein the voltage doubling driving circuit of the bistable pulse valve further comprises a capacitor voltage detection module, an input end of the capacitor voltage detection module is connected with the positive electrode of the capacitor C2, and an output end of the capacitor voltage detection module is connected with the control module; In step S3, when the capacitor C2 is charged, the control module detects the voltage of the capacitor C2 through the capacitor voltage detection module, and when the control module detects that the voltage of the capacitor C2 reaches the capacitor charging setting meeting voltage through the capacitor voltage, the control module judges that the charging of the capacitor C2 is completed.
11. The control method according to claim 10, wherein in step S3, when the capacitor C2 is charged, the control module detects the voltage of the capacitor C2 once every set detection time by the capacitor voltage detection module, if the voltage of the capacitor C2 is detected to reach the capacitor charging set satisfying voltage within the set detection times, the control module determines that the charging of the capacitor C2 is completed, if the voltage of the capacitor C2 is detected to not reach the capacitor charging set satisfying voltage within the set detection times, the control module determines that the battery connected to the battery connection port J1 has a fault, and at this time, the control module controls the switching tube V1 to be turned off and alarm to end the flow.
12. The control method of claim 10, wherein the voltage doubling driving circuit of the bistable pulse valve further comprises a battery voltage detection module, an input end of the battery voltage detection module is connected with the positive electrode of the battery connection port J1, and an output end of the battery voltage detection module is connected with the control module; In step S2, when the control module detects the input of the switching command, the control module detects the power supply voltage of the power supply battery connected to the battery connection port J1 through the battery voltage detection module, and sets the capacitor charging setting satisfying voltage according to the power supply voltage of the power supply battery and the theoretical line voltage drop.
13. The control method of claim 9, wherein the voltage doubling driving circuit of the bistable pulse valve further comprises a battery voltage detection module, an input end of the battery voltage detection module is connected with the positive electrode of the battery connection port J1, and an output end of the battery voltage detection module is connected with the control module; in step S2, when the control module does not detect the input of the switching instruction, the control module detects the power supply voltage of the power supply battery connected to the battery connection port J1 through the battery voltage detection module, if the power supply voltage of the power supply battery is lower than the set battery threshold voltage, the control module controls the switching tube V1 to cut off and alarm, and the flow is ended.

Description

Voltage-multiplying driving circuit of bistable pulse valve and control method thereof Technical Field The invention relates to the field of bistable pulse valves, in particular to a voltage doubling driving circuit of a bistable pulse valve and a control method thereof. Background The bistable pulse valve is an intelligent fluid control element applying pulse and permanent magnet technology, and is widely used in the scenes of intelligent closestool automatic flushing, sensing sanitary ware water control, solar energy automatic water supply, garden irrigation automation, food processing production line fluid regulation and control and the like, and can accurately realize on-off control of water, gas and partial liquid media. The bistable pulse valve drives the valve core to move by switching pulse polarity to change the on and off states, and can keep the current position when power supply is stopped, and continuous power supply is not needed. The working voltage of the bistable pulse valve powered by a battery is larger than or equal to 6V, and the reason is that the lower the working voltage, the larger the working current is needed under the same driving power, the smaller the internal resistance of a driving power supply loop is required, the process of battery power utilization is the process of increasing the internal resistance of the battery (the smaller the electric quantity of the battery is, the larger the internal resistance of the battery is), the lower the working voltage of the bistable pulse valve is, the less friendly the battery power supply loop is, and the working voltage of the bistable pulse valve is required to be set larger. And the minimum driving voltage of the bistable pulse valve with the working voltage of 6V is 4.5V, and the bistable pulse valve cannot be driven to switch under the condition that the minimum driving voltage is lower than 4.5V. At present, 2 lithium batteries or 4 dry batteries are mainly used for supplying power to a driving circuit of the bistable pulse valve in series, and the cost and the volume occupied by the batteries are large. If the battery plastic can be reduced, the cost and the product volume can be reduced, but if 1 lithium battery (3.7V) or two dry batteries (3V) are used for supplying power, the bistable pulse valve cannot be directly driven to switch, and a voltage doubling circuit is needed for boosting, but the standby power consumption of the common voltage doubling circuit is very high (the standby power consumption refers to the state that the output voltage is only maintained without being connected with a load), and the internal resistance of the common voltage doubling circuit is relatively high, so that the standby power consumption of the whole bistable pulse valve driving circuit is high, the duration of the battery is influenced, and the use by a user is inconvenient. In view of the above problems, there is a need to develop a bistable pulse valve voltage-multiplying driving circuit and a control method thereof, which can drive a bistable pulse valve to switch under a lower power supply voltage, and which has the advantage of low standby power consumption. Disclosure of Invention The invention aims to provide a bistable pulse valve voltage-multiplying driving circuit and a control method thereof, which can drive a bistable pulse valve to switch under lower power supply voltage and have the advantage of low standby power consumption. In order to achieve the above object, the solution of the present invention is: The voltage doubling driving circuit of the bistable pulse valve comprises a control module, a battery input module, a capacitor voltage doubling module and a pulse driving module, wherein the capacitor voltage doubling module comprises a capacitor C1, a capacitor C2, a diode D1, a switching tube V1 and a switching tube V2, types of the switching tube V1 and the switching tube V2 are complementary, the positive electrode of the capacitor C1, the second electrode of the switching tube V2 and the positive electrode of the diode D1 are connected with the input end of the capacitor voltage doubling module, the negative electrode of the capacitor C1 and the first electrode of the switching tube V1 are grounded, the positive electrode of the capacitor C2 and the negative electrode of the diode D1 are connected with the output end of the capacitor voltage doubling module, the negative electrode of the capacitor C2 is connected with the first electrode of the switching tube V2 and the second electrode of the switching tube V1, the control electrode of the switching tube V1 and the control electrode of the switching tube V2 are respectively connected with the first control end and the second control end of the capacitor voltage doubling circuit, the battery input module is provided with a battery connection port J1, the positive electrode of the battery connection port J1 is connected with the input end of the capacitor voltage doubli