Outdoor vehicle-mounted kitchen range integrated power management device and control method

Abstract

The invention discloses an integrated power management device and control method for an outdoor vehicle-mounted kitchen range, and the device comprises a main control module, a power input detection module, a charging management module, a lithium battery, a boost module, a water pump control module, a 5V power module, and a key module. The input end of the power input detection module is used for connecting at least two external power supplies, the output end is electrically connected with the power input end of the charging management module, the power output end of the charging management module is connected with the lithium battery, and the communication end is electrically connected with the main control module. The charging management module is used for performing charging management on the lithium battery and supporting a buck-boost charging mode and a function of charging while discharging; the main control module is electrically connected with the charging management module, the indicating lamp module, the boosting module, the water pump control module and the 5V power supply module. The integrated power supply management device supports multiple power supply input modes, and has a perfect protection mechanism and stable power supply performance.

Description

Technical Field

[0001] This invention relates to the field of power management technology, and specifically to an integrated power management device and control method for an outdoor vehicle-mounted stove. Background Technology

[0002] Outdoor vehicle-mounted stoves, as convenient cooking devices, are widely used in camping, road trips, and other similar scenarios. Their normal operation requires multiple power sources, such as charging the lithium battery to store energy, powering the water pump for water supply, and powering the igniter for ignition. Additionally, users in outdoor settings also need to charge mobile electronic devices like smartphones. Existing outdoor power supply products typically consist of a power adapter, a power bank, and a dedicated battery, requiring users to carry multiple separate adapters, power banks, and dedicated batteries to power their vehicle-mounted stoves. However, existing outdoor power supply products have the following shortcomings in use: 1) Existing outdoor power managers have relatively simple functions and usually only provide limited output interfaces (such as USB charging ports), which are difficult to meet the diverse power needs of devices such as outdoor vehicle stoves. For example, outdoor vehicle stoves usually need to drive water pumps, electronic igniters and charge mobile devices at the same time. 2) Existing power supply equipment lacks integrated design for such scenarios, resulting in users having to carry multiple independent power adapters, power banks and dedicated batteries, which takes up a lot of space, is inconvenient to use, and poses compatibility and safety risks. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies of the existing technology by providing an integrated power management device and control method that integrates lithium battery charging, water pump output, igniter output, and mobile phone charging, supports multiple power input methods, has a sound protection mechanism and stable power supply performance, can effectively meet the diversified power supply needs of outdoor vehicle stoves, adapts to the usage scenarios of outdoor vehicle stoves, and improves the convenience and safety of outdoor power use.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: On one hand, the present invention provides an integrated power management device for an outdoor vehicle-mounted stove, the integrated power management device including a main control module, a power input detection module, a charging management module, a lithium battery, a boost module, a water pump control module, a 5V power module, and a button module; The input terminal of the power input detection module is used to connect to at least two external power sources, and its output terminal is electrically connected to the power input terminal of the charging management module. The power input detection module has a built-in isolation reverse connection protection unit and an electrostatic protection unit to realize the detection, switching and protection of external power source access. The power output terminal of the charging management module is connected to the lithium battery, and its communication terminal is electrically connected to the main control module. The charging management module is used to manage the charging of the lithium battery and supports buck-boost charging mode and simultaneous charging and discharging function. The main control module is electrically connected to the charging management module, the boost module, the water pump control module and the 5V power supply module respectively. The voltage output terminal of the boost module is used to connect the water pump and the igniter to boost the input voltage and output a stable voltage. The output of the water pump control module is used to connect to the water pump so as to control the working power of the water pump according to the water pump's on / off status. The 5V power module is controlled by the main control module, and its voltage output terminal is used to charge mobile electronic devices, providing a stable output voltage. The integrated power management device of this invention integrates multiple functions such as lithium battery charging, water pump output, igniter output, and mobile phone charging into one unit, eliminating the need for multiple independent power supplies for outdoor vehicle-mounted stoves, effectively simplifying the configuration of outdoor power supply equipment and improving ease of use. Furthermore, the main control module includes a main chip MCU1, a resistor R104, a capacitor C79, and a capacitor C80. The 10th pin of the main chip MCU1 is electrically connected to the resistor R104, the capacitor C79, and the capacitor C80.

[0005] Furthermore, the input terminal of the power input detection module includes a DC input interface CN3, a TYPE-C input interface CN2, and a fast charging protocol chip U5. The fast charging protocol chip U5 is electrically connected to the TYPE-C input interface CN2. The two external power supplies connected to the input terminal of the power input detection module include a DC input power supply and a TYPE-C input power supply. The isolation and reverse connection protection unit includes at least MOSFETs M9, M10, M11, and M12. The MOSFETs M9, M10, M11, and M12 form an input power isolation circuit to achieve isolation and reverse connection protection between different input power supplies and priority selection when multiple power supplies are connected simultaneously. The electrostatic discharge protection unit includes several TVS diodes, which are connected in parallel between the power lines and ground lines of the DC input interface CN3 and the TYPE-C input interface CN2. Electrostatic discharge (ESD) protection is achieved through several TVS diodes, effectively preventing equipment damage caused by improper power supply or static electricity. At the same time, the charging management module can monitor the input current and charging current in real time through a detection resistor. The main control module can adjust the charging parameters based on the monitoring data to avoid problems such as overcurrent and overvoltage, further improving the safety of the equipment.

[0006] Furthermore, the power input detection module also includes a power identification unit, which includes optocouplers U4 and U6. Pin 21 of the main chip MCU1 of the main control module is electrically connected to optocoupler U4, and pin 20 of the main chip MCU1 is electrically connected to optocoupler U6.

[0007] Furthermore, the charging management module includes a charging management chip U2, an external power switch, an inductor L2, a detection resistor R1, and a detection resistor R30. The charging management chip U2, the external power switch, and the inductor L2 form a buck-boost topology. Pins 2 and 3 of the charging management chip U2 are electrically connected to both ends of the detection resistor R1 to enable the detection resistor R1 to detect the input current. Pins 19 and 20 of the charging management chip U2 are electrically connected to both ends of the detection resistor R30 to enable the detection resistor R30 to detect the charging current. Pins 12 and 13 of the charging management chip U2 are electrically connected to pins 12 and 13 of the main chip MCU1 of the main control module, respectively.

[0008] Furthermore, the integrated power management device includes an indicator light module for indicating charging status and battery level, and the main chip MCU1 of the main control module is electrically connected to the indicator light module.

[0009] Furthermore, the boost module includes a DC-DC boost chip U1, an output voltage sampling circuit, an output voltage detection circuit, and an output control switch circuit. The DC-DC boost chip U1 is electrically connected to the output voltage sampling circuit, the output voltage detection circuit, and the output control switch circuit, respectively. The second pin of the DC-DC boost chip U1 is electrically connected to the output control switch circuit. The DC-DC boost chip U1 is electrically connected to the eighth pin of the main chip MCU1 of the main control module through the output control switch circuit. The main control module controls the on / off state of the output control switch circuit electrically connected to the DC-DC boost chip U1 to control the output on / off of the 12V voltage.

[0010] Furthermore, the button module includes a button KEY1, a resistor R86, a resistor R89, and a capacitor C76. The capacitor C76 is connected in parallel across the two ends of the button KEY1. One end of the resistors R86 and R89 is electrically connected to one end of the button KEY1, and the other end of the resistor R89 ​​is electrically connected to pin 6 of the main chip MCU1 of the main control module to realize the electrical connection between the main chip MCU1 and the button KEY1.

[0011] Furthermore, the water pump control module includes a water pump drive circuit, a water pump switch detection circuit for detecting the water pump switch status, and a water pump output voltage detection circuit for sampling the water pump supply voltage. The main chip MCU1 of the main control module is electrically connected to the water pump drive circuit, the water pump switch detection circuit, and the water pump output voltage detection circuit. When the water pump switch detection circuit detects that the water pump switch is closed, the main chip MCU1 of the main control module controls the water pump drive circuit to supply power to the water pump.

[0012] On the other hand, the present invention also provides a control method for an infrared light touch range hood, the control method comprising the following steps: System power-on initialization; Continuously monitor the external power input status; When the power input detection module detects an external power input, it sends a wake-up signal to the main control module. The main control module is then woken up and controls the charging management module to enter the charging state of the lithium battery. At the same time, it controls the indicator light module to indicate the charging status. When the main control module detects a user trigger signal through the button module, it controls the 5V power supply module or the boost module to turn on voltage output. When there is no external power input and the lithium battery is powered, if the main control module does not detect user operation through the button module within a preset time, it controls the power manager to enter a low-power sleep state; when a trigger signal is detected again through the button module, it wakes up and resumes normal operation.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The integrated power management device of this invention includes a main control module, a power input detection module, a charging management module, a lithium battery, a boost module, a water pump control module, a 5V power module, and a button module. The input terminal of the power input detection module is used to connect to at least two external power sources, and its output terminal is electrically connected to the power input terminal of the charging management module. The power output terminal of the charging management module is connected to the lithium battery, and its communication terminal is electrically connected to the main control module. The charging management module manages the charging of the lithium battery and supports boost / buck charging modes and simultaneous charging and discharging. The main control module is electrically connected to the charging management module, indicator light module, boost module, water pump control module, and 5V power module. This integrated power management device supports multiple power input methods, has a comprehensive protection mechanism and stable power supply performance, and can effectively meet the diverse power supply needs of outdoor vehicle-mounted stoves and related equipment. Attached Figure Description

[0014] Figure 1 This is a circuit module block diagram of the integrated power management device of the present invention; Figure 2This is a circuit diagram of the main control module, lithium battery, button module, and indicator light module in this invention. Figure 3 This is a circuit schematic diagram of the power input detection module in this invention; Figure 4 This is a circuit diagram of the charging management module and the boost module in this invention; Figure 5 This is a circuit diagram of the water pump control module in this invention; Figure 6 This is the circuit principle of the 5V power supply module in this invention. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings, which form part of this specification. The principles of the invention are illustrated by means of embodiments, and other aspects, features, and advantages of the invention will become apparent from this detailed description. In the accompanying drawings, the same or similar parts in different figures are indicated by the same reference numerals.

[0016] Example 1 like Figures 1-6 As shown, Embodiment 1 of the present invention provides an integrated power management device for an outdoor vehicle-mounted stove. The integrated power management device includes a main control module, a power input detection module, a charging management module, a lithium battery, a boost module, a water pump control module, a 5V power module, a button module, and an indicator light module. The power input detection module has an input terminal for connecting to at least two external power sources, and its output terminal is electrically connected to the power input terminal of the charging management module. The power input detection module has a built-in isolation reverse connection protection unit and an electrostatic discharge protection unit for detecting, switching, and protecting against external power supply access. The charging management module's power output terminal is connected to the lithium battery, and its communication terminal is electrically connected to the main control module. The charging management module manages the lithium battery's charging and supports buck-boost charging modes and simultaneous charging and discharging. An indicator light module indicates the charging status and battery level. The main control module is connected to the charging management module, indicator light module, boost module, and water... The pump control module and the 5V power supply module are electrically connected. The voltage output terminal of the boost module is used to connect the water pump and the igniter to boost the input voltage and output a stable voltage. Specifically, the boost module is used to boost the input voltage and output a stable 12V voltage. The output terminal of the water pump control module is used to connect to the water pump to control the water pump's operating power supply according to the water pump's on / off status. The 5V power supply module is controlled by the main control module, and its voltage output terminal is used to charge mobile electronic devices and output a stable voltage. Specifically, the 5V power supply module is controlled by the main control module to step down the input voltage to a stable 5V output voltage.

[0017] The main control module of this invention includes a main chip MCU1, a resistor R104, a capacitor C79, and a capacitor C80. Pin 10 of the main chip MCU1 is electrically connected to resistor R104, capacitor C79, and capacitor C80. Specifically, the main chip MCU1 is a TM52FOA23, specifically a TMS2F0A23 main chip MCU1, which serves as the core control unit of the power manager. Pin 10 of the main chip MCU1 is connected to the supply voltage VDD to provide power for operation. Pin 8 of the main chip MCU1 is electrically connected to the 12V power output control terminal to control the on / off state of the 12V power supply. Pin 16 is electrically connected to the button module to receive button trigger signals.

[0018] The power input detection module of the present invention includes a DC input interface CN3, a TYPE-C input interface CN2, and a fast charging protocol chip U5. The fast charging protocol chip U5 is electrically connected to the TYPE-C input interface CN2. The preferred model of the fast charging protocol chip U5 is IP2723T. The TYPE-C input interface CN2 enables the TYPE-C charger supporting the fast charging protocol to output a 12V voltage through the fast charging protocol chip U5. The isolation and reverse connection protection unit includes at least MOSFETs M9, M10, M11, and M12. MOSFETs M9, M10, M11, and M12 form an input power isolation circuit to achieve isolation and reverse connection protection between different input power supplies and priority selection when multiple power supplies are connected at the same time. The electrostatic discharge protection unit includes several TVS diodes, which are respectively connected in parallel between the power line and ground line of the DC input interface CN3 and the TYPE-C input interface CN2. In specific implementation, the power input module includes a TYPE-C input interface CN2 and a DC input interface CN3 (adapter input interface) CN3. Pins 21 and 20 of the main chip MCU1 are respectively connected to the TYPC-TEST and DC-TEST detection terminals to collect the status signals of the two power inputs. The electrostatic discharge protection unit of this invention has several TVS diodes, namely TVS5, TVS6, TVS8, TVS9, TVS10, TVS11, and TVS7. Among them, TVS6 is connected in parallel between TYPE-C+ and GND of the DC input interface CN3, and TVS8, TVS9, TVS10, TVS11, and TVS7 are electrically connected to the TYPE-C input interface CN2. All TVS diodes are of the SMAJ24A model.

[0019] In practical implementation, MOSFETs M9, M10, M11, and M12 constitute the input selection and isolation circuit, and their gates are controlled by the main chip MCU1 of the main control module through optocouplers U4 and U6. TVS transistors TVS5 and TVS6 can clamp the voltage within a safe range during static electricity and release the electrostatic current, thereby achieving electrostatic protection for the human body and preventing electrostatic damage to the interface and subsequent circuit components.

[0020] This invention achieves electrostatic discharge (ESD) protection through several TVS diodes, effectively preventing equipment damage caused by improper power supply or static electricity. At the same time, the charging management module can monitor the input current and charging current in real time through a detection resistor, and the main control module can adjust the charging parameters based on the monitoring data to avoid problems such as overcurrent and overvoltage, further improving the safety of the equipment.

[0021] The power input detection module of this invention also includes a power identification unit, which includes optocouplers U4 and U6. Pin 21 of the main control module's MCU1 is electrically connected to optocoupler U4, and pin 20 of the main control module's MCU1 is electrically connected to optocoupler U6. The main control module's MCU1 identifies whether a DC input or a TYPE-C input is connected by reading the output levels of optocouplers U4 and U6, and controls the conduction state of the corresponding MOSFET based on the identification result. When both a DC input and a TYPE-C input are connected simultaneously, the main control module controls the MOSFET corresponding to the DC input to conduct first. In specific implementation, optocouplers U4 and U6 are EL1019 type optocouplers, and the main control module's MCU1 identifies whether an external power supply is connected by the conduction state of optocouplers U4 and U6. Specifically, when an external power source is connected, the input terminal of the optocoupler receives voltage, the optocoupler conducts, and the corresponding I / O port of the main chip MCU1 detects a low level (or high level), thus determining that power is connected. When no power is connected, the optocoupler is cut off, and the main chip MCU1 detects the opposite level. Furthermore, when both the DC input and the TYPE-C input are connected simultaneously, the main chip MCU1, after recognizing the connection through the optocoupler, prioritizes the conduction of the MOSFET corresponding to the DC input, implementing a DC input priority switching logic.

[0022] This invention incorporates an isolation and reverse connection protection unit and an electrostatic discharge (ESD) protection unit in the power input detection module. Four sets of MOSFETs are used to achieve isolation and reverse connection protection of the input power. Specifically, MOSFETs M9 and M10 are preferably BL065P04, and MOSFETs M11 and M12 are BL027NO4T-5DL8. The core function of these four sets of MOSFETs is to isolate the DC input and the Type-C input, while preventing reverse connection: when an external power supply is connected, the main chip MCU1 identifies the power type through optocouplers U4 and U6 and controls the corresponding MOSFET to conduct, allowing power to be connected; if the power supply is reversed, the MOSFETs are in the off state to prevent damage to subsequent circuits.

[0023] The charging management module of the present invention includes a charging management chip U2, an external power switch, an inductor L2, a detection resistor R1, and a detection resistor R30. The charging management chip U2, the external power switch, and the inductor L2 form a buck-boost topology. The second and third pins of the charging management chip U2 are electrically connected to the two ends of the detection resistor R1 to enable the detection resistor R1 to detect the input current. The 19th and 20th pins of the charging management chip U2 are electrically connected to the two ends of the detection resistor R30 to enable the detection resistor R30 to detect the charging current. The 12th and 13th pins of the charging management chip U2 are electrically connected to the 12th and 13th pins of the main chip MCU1 of the main control module, respectively. In specific implementation, the preferred model of the charging management chip U2 in this invention is SC8886QDER. The peripheral power switches include MOSFETs M1, M2, M5, and M6. The main chip MCU1 communicates with the charging management chip U2 through its pins 12 and 13 to set the charging current, charging voltage, and input current limiting parameters. The peripheral power switches and inductor L2 form a buck-boost topology, enabling the charging management circuit to adapt to buck-boost charging with a wide range of input voltage variations. The charging management module of this invention supports buck-boost charging mode and can automatically adjust the charging mode according to the difference between the input voltage and the lithium battery voltage to ensure the stability of the charging process. It also supports simultaneous charging and discharging, ensuring stable power supply to the load during charging.

[0024] In this embodiment of the invention, the indicator module includes a green indicator LED2 and a red indicator LED1. The main control module's main chip MCU1 is electrically connected to the green indicator LED2 and the red indicator LED1 via its pins 22 and 23, respectively. The main control module controls the on / off state, color, and flashing frequency of the green indicator LED2 and the red indicator LED1 via pins 22 and 23 to indicate the charging status, power information, or system errors of the lithium battery, thus achieving indication and control of the working status. In this embodiment of the invention, the specific indication process of the indicator module is as follows: when an external power input is detected and the charging management module enters the charging state, the main chip MCU1 controls the green indicator LED2 to flash, indicating that charging is currently in progress; when charging is complete, the green indicator LED2 remains constantly lit; when the lithium battery power is insufficient, the red indicator LED1 flashes; when the lithium battery power is sufficient and not charging, the red indicator LED1 remains constantly lit. Through the different working states of the dual-color indicator lights, the user can intuitively understand the charging status of the power management device and the lithium battery power status.

[0025] The boost module of this invention includes a DC-DC boost chip U1, an output voltage sampling circuit, an output voltage detection circuit, and an output control switch circuit. The DC-DC boost chip U1 is electrically connected to the output voltage sampling circuit, the output voltage detection circuit, and the output control switch circuit, respectively. Pin 2 of the DC-DC boost chip U1 is electrically connected to the output control switch circuit. The DC-DC boost chip U1 is electrically connected to pin 8 of the main chip MCU1 of the main control module through the output control switch circuit. The main control module controls the on / off state of the output control switch circuit electrically connected to the DC-DC boost chip U1 to control the output switching of the 12V voltage. The output control switch circuit integrates a soft-start circuit to suppress inrush current when the power is turned on. In a specific implementation of this invention, the DC-DC boost chip U1 is preferably a PL32001, which has a high-efficiency boost function and can stably boost the input low voltage to 12V.

[0026] The boost module of this invention uses a DC-DC boost chip U1, which can stably boost the lithium battery voltage (approximately 9V-12.6V) to 12V, with a maximum output current of 3A, to power the water pump and igniter. The output voltage sampling circuit includes resistors R5 and R21. One end of resistor R5 is electrically connected to resistor R21, and the other end of resistor R5 is electrically connected to pins 14, 15, and 16 of the DC-DC boost chip U1. The DC-DC boost chip U1 acquires the output voltage signal through resistors R5 and R21, compares it with its internal reference voltage, and adjusts the duty cycle of the boost module to achieve output voltage stability. The output voltage detection circuit includes the input terminal OUT+ of the voltage to be detected, a +12V reference voltage terminal, resistors R55, R63, and R60. One end of resistor R55 is connected to the input terminal OUT+ of the voltage to be detected, and the other end of resistor R55 is simultaneously connected to pins 14, 15, and 16 of resistor R63. One end of resistor R63 is electrically connected to the other end of resistor R64 to form a common sampling node. The other end of resistor R65 is electrically connected to pin 17 of the main chip MCU1. The voltage to be detected is input through OUT+ and transmitted to the common node through resistor R55. Then, resistor R63 and pin 17 of the main chip MCU1 form a voltage reference circuit. Resistor R60 pulls the voltage of the common node down to ground. Finally, the output voltage sampling signal related to the OUT+ voltage is output through the common node and sent to pin 17 of the main chip MCU1 for output voltage monitoring. Among them, resistor R55 is a voltage divider resistor, resistor R63 is a reference voltage matching resistor, and resistor R60 is a pull-down resistor. The three work together to ensure sampling accuracy. The main chip MCU1 collects the voltage across resistor R63 through pin 17 to monitor the stability of the 12V output voltage in real time. If an abnormal voltage occurs, the main chip MCU1 controls the boost module to stop outputting. The output control switch circuit includes MOSFET M3, resistor R4, transistor Q2, and resistor R26. The base of transistor Q3 is electrically connected to the gate of MOSFET M3. One end of resistor R28 is electrically connected to the base of transistor Q3, and the other end of resistor R28 is electrically connected to pin 15 of the main chip MCU1. Transistor Q3 is electrically connected to the main chip MCU1 through resistor R28. The collector of transistor Q2 is electrically connected to pin 2 of the DC-DC boost chip U1. One end of resistor R4 is connected to the collector of transistor Q2 and pin 2 of the DC-DC boost chip U1. The two pins are electrically connected. The other end of resistor R4 is electrically connected to the drain of MOSFET M3, realizing the electrical connection between DC-DC boost chip U1 and transistor Q2 and MOSFET M3. One end of resistor R26 is electrically connected to the base of transistor Q2, and the other end of resistor R26 is electrically connected to pin 8 of main chip MCU1, thereby realizing the electrical connection between main chip MCU1 and DC-DC boost chip, MOSFET M3, and transistor Q2. Main chip MCU1 controls the output of 12V power supply by controlling the conduction state of MOSFET M3 and transistor Q2.

[0027] When a 12V output is required, the main chip MCU1 controls transistor Q2 to conduct, which in turn controls MOSFET M3 to conduct, powering on the 12V output of the boost module. When no output is needed, the main chip MCU1 controls transistor Q2 to cut off, MOSFET M3 to cut off, and the 12V output to turn off. A soft-start circuit is formed by resistors R3, R14, R28, R32, and capacitor C88. At the moment of switching on, capacitor C88 charges slowly, gradually changing the conduction state of transistor Q3, which in turn slowly controls MOSFET M3 to conduct, preventing surge current during switching and protecting the DC-DC boost chip U1 and subsequent loads (water pump, igniter). At the moment of switching on, the voltage across capacitor C88 is 0, transistor Q3 is cut off, the gate voltage of MOSFET M3 rises slowly through the resistor, MOSFET M3 gradually conducts, and the output current increases slowly, achieving a soft start. Once the capacitor is fully charged, transistor Q3 conducts, MOSFET M3 conducts stably, and the normal output current is achieved. The soft-start circuit smooths out the surge current that charges the downstream capacitor, protecting the switching transistor and the load.

[0028] The water pump control module of this invention includes a water pump drive circuit, a water pump switch detection circuit for detecting the water pump switch status, and a water pump output voltage detection circuit for sampling the water pump supply voltage. The main chip MCU1 of the main control module is electrically connected to the water pump drive circuit, the water pump switch detection circuit, and the water pump output voltage detection circuit. When the water pump switch detection circuit detects that the water pump switch is closed, the main chip MCU1 of the main control module controls the water pump drive circuit to supply power to the water pump. The water pump drive circuit includes a transistor Q1, a resistor R23, a power PMOS transistor M4, and a resistor R15. One end of resistor R15 is electrically connected to the collector of transistor Q1, and the other end of resistor R15 is electrically connected to the gate of power PMOS transistor M4. Power PMOS transistor M4 is electrically connected to transistor Q1 through resistor R15. One end of resistor R23 is electrically connected to the base of transistor Q1, and the other end of resistor R23 is electrically connected to pin 14 of the main control module's MCU1 chip to achieve electrical connection between the main control module's MCU1 chip and transistor Q1 and power PMOS transistor M4. The water pump output voltage... The voltage detection circuit includes resistors R73, R81, and R79. One end of resistor R73 is electrically connected to one end of resistor R81 and one end of resistor R79. The other end of resistor R79 is electrically connected to pin 24 of the main chip MCU1. The water pump switch detection circuit includes resistors R90 and R94, capacitor C77, and a water pump switch SW. One end of resistor R94, one end of resistor R90, and one end of capacitor C77 are electrically connected to the water pump switch SW. The other end of resistor R94 is electrically connected to pin 16 of the main chip MCU1 to establish an electrical connection between the main chip MCU1 and the water pump switch SW. When the water pump switch detection circuit detects that the water pump switch SW is closed, the main chip MCU1 controls transistor Q1 to conduct, which in turn turns on PMOS transistor M4, supplying power to the water pump.

[0029] When the user closes the water pump switch SW, capacitor C77 in the water pump switch detection circuit charges, and resistors R90 and R94 divide the voltage to generate a detection voltage. Pin 16 of the main chip MCU1 detects this voltage signal and determines that the water pump switch SW is closed. Subsequently, the main chip MCU1 controls transistor Q1 to conduct, the gate voltage of PMOS transistor M4 is pulled low, PMOS transistor M4 turns on, and 12V power is supplied to the water pump through the PMOS transistor, and the water pump starts working.

[0030] The water pump output voltage detection circuit consists of a voltage divider circuit composed of resistors R73, R81, and R79. The main chip MCU1 samples the divided voltage to monitor the water pump's output voltage in real time. If the voltage is abnormal (such as a sudden voltage drop caused by a short circuit in the water pump), the main chip MCU1 can control transistor Q1 to turn off and PMOS transistor M4 to shut down, stopping power supply to the water pump and protecting it. Furthermore, when the power manager is in sleep mode, if the water pump switch is closed, the main chip MCU1 will detect this and control the relevant circuits to a low-power state to avoid unnecessary power consumption.

[0031] The 5V power supply module of this invention includes a synchronous buck chip U3 supporting the DCP output protocol, an output voltage detection circuit, and an output control switch circuit. The output control switch circuit also integrates a soft-start unit for suppressing inrush current when the power is turned on. Both the output control switch circuit and the output voltage detection circuit are electrically connected to the synchronous buck chip U3. The main chip MCU1 of the main control module is electrically connected to the output voltage detection circuit and the output control switch circuit. The main chip MCU1 controls the on / off state of the output control switch circuit, which is electrically connected to the synchronous buck chip U3, to control the output of the 5V voltage. In specific implementation, the synchronous buck chip U3 of the present invention is preferably model IP6536. The output voltage detection circuit includes resistors R56, R66, and R61. One end of resistor R56 is electrically connected to one end of resistor R66 and one end of resistor R61, respectively. The other end of resistor R56 is electrically connected to pin 7 of the synchronous buck chip U3, and the other end of resistor R61 is electrically connected to pin 18 of the main chip MCU1. The main chip MCU1 monitors the stability of the 5V output voltage in real time by acquiring the voltage divider voltage of the detection resistor R61. Pin 7 of the synchronous buck chip U3 is also connected to a filter capacitor E7 (220μF / 25V) to filter out noise in the output voltage and ensure the purity of the charging voltage. The output control switch circuit includes transistor Q4, resistors R52 and R47, and MOSFET M8. One end of resistor R47 is electrically connected to the collector of transistor Q4, and the other end of resistor R47 is electrically connected to the gate of MOSFET M8. One end of resistor R52 is electrically connected to the base of transistor Q4, and the other end of resistor R52 is electrically connected to pin 11 of the main chip MCU1. The main chip MCU1 controls the output of the 5V power supply by controlling the conduction state of transistor Q4 and MOSFET M8. When a 5V voltage is needed, the main chip MCU1 controls transistor Q4 to conduct, which in turn controls MOSFET M8 to conduct, and the 5V output terminal (+5V-OUT) is powered on. When no output is needed, the main chip MCU1 controls transistor Q4 to be cut off, MOSFET M8 to be cut off, and the 5V output terminal is turned off.

[0032] The 5V power module of this invention also includes a soft-start unit for suppressing inrush current during switching. This soft-start unit consists of a MOSFET M8, a transistor Q4, resistors R42, R47, R52, and R53, and a capacitor C89. The working principle of the soft-start unit is the same as that of the boost module's soft-start circuit, used to suppress inrush current during 5V power switching, protecting the buck chip and charging equipment. The boost module and 5V power module of this invention are equipped with a soft-start circuit and a soft-start unit, which can effectively suppress inrush current during switching, preventing inrush current from impacting the power supply equipment and load.

[0033] In specific implementation, the button module includes button KEY1, resistor R86, resistor R89, and capacitor C76. Capacitor C76 is connected in parallel across button KEY1. One end of resistor R86 and resistor R89 ​​is electrically connected to one end of button KEY1, and the other end of resistor R89 ​​is electrically connected to pin 6 of the main chip MCU1 of the main control module to realize the electrical connection between the main chip MCU1 and button KEY1.

[0034] The button module in this invention is used to receive user trigger signals to switch working states. Button KEY1 is a mechanical button connected to the IO port (pin 6) of the main chip MCU1. A capacitor C76 is connected in parallel across button KEY1 for debouncing. The specific working logic is as follows: When an external power input is detected, the main chip MCU1 automatically wakes up and controls the charging management module to enter the charging state. At this time, the green indicator LED2 flashes. After the user presses button KEY1, the main chip MCU1 detects the button trigger signal and controls the 5V power module and boost module to start output, supplying power to the mobile phone, water pump, and igniter. When there is no external power input, when the user presses button KEY1, the main chip MCU1 switches between normal output state and sleep state: in sleep state, pressing button KEY1 switches to normal output state, enabling 5V and 12V output; in normal output state, pressing button KEY1 switches to sleep state, shutting down all outputs and reducing power consumption.

[0035] The present invention also provides a control method for an integrated power management device for an outdoor vehicle-mounted stove, the control method comprising the following steps: System power-on initialization; Continuously monitor the external power input status; When the power input detection module detects an external power input, it sends a wake-up signal to the main control module. The main control module is then woken up and controls the charging management module to enter the charging state of the lithium battery. At the same time, it controls the indicator light module to indicate the charging status. When the main control module detects a user trigger signal through the button module, it controls the 5V power supply module or boost module to turn on the voltage output. When there is no external power input and the lithium battery is powered, if the main control module does not detect user operation through the button module within a preset time, it controls the power manager to enter a low-power sleep state; when the trigger signal is detected again through the button module, it wakes up and resumes normal operation.

[0036] Compared with the prior art, the technical solution disclosed in the above embodiments has the following beneficial effects: In the above embodiments, the integrated power management device of the present invention integrates multiple functions such as lithium battery charging, water pump output, igniter output, and mobile phone charging into one unit. It eliminates the need for multiple independent power supplies for outdoor vehicle-mounted stoves, effectively simplifying the configuration of outdoor power supply equipment, improving ease of use, and fully meeting the diverse power supply needs of users in outdoor leisure and entertainment activities. When an external power source is detected by the power input detection module, the main control module controls the charging management module to enter the charging state. When no external power source is connected, the button module switches between normal output state and sleep state, and has an automatic external power source detection function. After an external power source is connected, it can automatically wake up and enter the charging state. The power output can be turned on and the working state can be switched by pressing a button. The operation logic is simple and facilitates quick operation in outdoor environments.

[0037] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of this application. All equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. An integrated power management device for an outdoor vehicle-mounted stove, characterized in that: The integrated power management device includes a main control module, a power input detection module, a charging management module, a lithium battery, a boost module, a water pump control module, a 5V power module, and a button module. The input terminal of the power input detection module is used to connect to at least two external power sources, and its output terminal is electrically connected to the power input terminal of the charging management module. The power output terminal of the charging management module is connected to the lithium battery, and its communication terminal is electrically connected to the main control module. The charging management module is used to manage the charging of the lithium battery and supports buck-boost charging mode and simultaneous charging and discharging function. The main control module is electrically connected to the charging management module, the boost module, the water pump control module and the 5V power supply module respectively. The voltage output terminal of the boost module is used to connect the water pump and the igniter to boost the input voltage and output a stable voltage. The output of the water pump control module is used to connect to the water pump so as to control the working power of the water pump according to the water pump's on / off status. The 5V power module is controlled by the main control module, and its voltage output terminal is used to charge mobile electronic devices and output a stable voltage.

2. The integrated power management device for outdoor vehicle-mounted stoves according to claim 1, characterized in that: The main control module includes a main chip MCU1, a resistor R104, a capacitor C79, and a capacitor C80. The 10th pin of the main chip MCU1 is electrically connected to the resistor R104, the capacitor C79, and the capacitor C80.

3. The integrated power management device for outdoor vehicle-mounted stoves according to claim 1, characterized in that: The input terminal of the power input detection module includes a DC input interface CN3, a TYPE-C input interface CN2, and a fast charging protocol chip U5. The fast charging protocol chip U5 is electrically connected to the TYPE-C input interface CN2. The two external power sources connected to the input terminal of the power input detection module include a DC input power source and a TYPE-C input power source.

4. The integrated power management device for outdoor vehicle-mounted stoves according to claim 1, characterized in that: The integrated power management device includes an indicator light module for indicating charging status and battery level, and the main chip MCU1 of the main control module is electrically connected to the indicator light module.

5. The integrated power management device for outdoor vehicle-mounted stoves according to claim 3, characterized in that: The power input detection module also includes a power identification unit, which includes optocouplers U4 and U6. Pin 21 of the main chip MCU1 of the main control module is electrically connected to optocoupler U4, and pin 20 of the main chip MCU1 is electrically connected to optocoupler U6.

6. The integrated power management device for outdoor vehicle-mounted stoves according to claim 1, characterized in that: The charging management module includes a charging management chip U2, an external power switch, an inductor L2, a detection resistor R1, and a detection resistor R30. The charging management chip U2, the external power switch, and the inductor L2 form a buck-boost topology. Pins 2 and 3 of the charging management chip U2 are electrically connected to both ends of the detection resistor R1 to enable the detection resistor R1 to detect the input current. Pins 19 and 20 of the charging management chip U2 are electrically connected to both ends of the detection resistor R30 to enable the detection resistor R30 to detect the charging current. Pins 12 and 13 of the charging management chip U2 are electrically connected to pins 12 and 13 of the main chip MCU1 of the main control module, respectively.

7. The integrated power management device for outdoor vehicle-mounted stoves according to claim 1, characterized in that: The boost module includes a DC-DC boost chip U1, an output voltage sampling circuit, an output voltage detection circuit, and an output control switch circuit. The DC-DC boost chip U1 is electrically connected to the output voltage sampling circuit, the output voltage detection circuit, and the output control switch circuit, respectively. The second pin of the DC-DC boost chip U1 is electrically connected to the output control switch circuit. The DC-DC boost chip U1 is electrically connected to the eighth pin of the main chip MCU1 of the main control module through the output control switch circuit. The main control module controls the on / off state of the output control switch circuit electrically connected to the DC-DC boost chip U1 to control the output on / off of the 12V voltage.

8. The integrated power management device for outdoor vehicle-mounted stoves according to claim 1, characterized in that: The button module includes a button KEY1, resistors R86 and R89, and a capacitor C76. The capacitor C76 is connected in parallel across the two ends of the button KEY1. One end of resistors R86 and R89 is electrically connected to one end of the button KEY1, and the other end of resistor R89 ​​is electrically connected to pin 6 of the main chip MCU1 of the main control module to realize the electrical connection between the main chip MCU1 and the button KEY1.

9. The integrated power management device for outdoor vehicle-mounted stoves according to claim 1, characterized in that: The water pump control module includes a water pump drive circuit, a water pump switch detection circuit for detecting the water pump's on / off status, and a water pump output voltage detection circuit for sampling the water pump's power supply voltage. The main chip MCU1 of the main control module is electrically connected to the water pump drive circuit, the water pump switch detection circuit, and the water pump output voltage detection circuit. When the water pump switch detection circuit detects that the water pump switch is closed, the main chip MCU1 of the main control module controls the water pump drive circuit to supply power to the water pump.

10. A control method for an infrared light touch range hood, comprising the control method for an integrated power management device for an outdoor vehicle-mounted stove as described in any one of claims 1-9, characterized in that: The control method includes the following steps: System power-on initialization; Continuously monitor the external power input status; When the power input detection module detects an external power input, it sends a wake-up signal to the main control module. The main control module is then woken up and controls the charging management module to enter the charging state of the lithium battery. At the same time, it controls the indicator light module to indicate the charging status. When the main control module detects a user trigger signal through the button module, it controls the 5V power supply module or the boost module to turn on voltage output. When there is no external power input and the lithium battery is powered, if the main control module does not detect user operation through the button module within a preset time, it controls the power manager to enter a low-power sleep state; when a trigger signal is detected again through the button module, it wakes up and resumes normal operation.

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