Multifunctional control circuit and motor controller

Abstract

The invention relates to the field of integrated circuits, in particular to a multifunctional control circuit and a motor controller, the control circuit comprises a battery pack module, a chip power-on control module, a power supply voltage adaptation module and a control chip; wherein the chip power-on control module is connected with positive and negative electrodes of a battery pack and supplies power to the control chip through a first node and a second node; the power supply voltage adaptation module is composed of a first switch K1, a first triode Q1, voltage stabilization chips U1 and U2 and the like, and can adjust the output voltage according to different conditions to stably supply power to the control chip. The method has obvious advantages, the integration level of PCB layout and wiring is greatly improved, and circuit space occupation is reduced. And through a flexible voltage regulation mechanism, the power supply adaptability is enhanced, and different power supply voltage environments can be adapted. And in the aspect of charging, reliable safety guarantee measures are provided, and the charging safety is improved. In addition, diversified requirements in different application scenes can be met, and powerful support is provided for stable operation of the motor controller and related equipment.

Description

Technical Field

[0001] The present invention relates to the field of integrated circuits, and in particular to a multifunctional control circuit and a motor controller. Background Art

[0002] In the field of modern electronic devices, especially in the development of small household appliances such as portable cordless vacuum cleaners, related technologies face many challenges and difficulties.

[0003] From a circuit design perspective, traditional vacuum cleaner control circuits are often composed of multiple discrete components. This results in extremely complex PCB layout and routing. Not only does it require a significant amount of space to house these components, but the wiring process is also cumbersome and prone to issues like wire crossing and interference, significantly increasing the difficulty and risk of errors in circuit design. For example, in early vacuum cleaners, functions such as charging management, power control, and motor drive were implemented on separate circuit boards and numerous discrete components. This resulted in a complex internal wiring system, difficult maintenance, and low reliability.

[0004] In terms of cost control, this decentralized circuit design results in high bill of materials (BOM) costs. The numerous discrete components mean higher procurement, assembly, and quality inspection costs. With increasingly fierce market competition, cost reduction has become a key factor in improving companies' competitiveness. Traditional circuit design models severely restrict the price competitiveness of vacuum cleaners, making it difficult to meet consumer demand for cost-effective products.

[0005] In terms of functional implementation, traditional circuits have obvious shortcomings. In terms of charging management, the lack of accurate charging current detection function can easily lead to overcharging or undercharging of the battery, shortening the battery life and affecting the user experience. In terms of power circuits, the input voltage range is narrow and cannot adapt to a variety of batteries or power adapters of different specifications. It also requires a complex external power supply circuit to achieve voltage conversion, which increases the complexity and failure rate of the product. In addition, the board-level power control is not intelligent enough and cannot conveniently control the switching of the entire board power supply through external signals. The degree of integration between the power supply and motor drive is also low, and the board-level EMC performance is poor. The electromagnetic interference generated by the motor during operation can easily affect the normal operation of other circuits, reducing the stability of the entire machine. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides a multifunctional control circuit and a motor controller, wherein the multifunctional control circuit includes: a battery pack module, a first node, a second node, a chip power control module, a supply voltage adapter module, and a control chip;

[0007] The input end of the chip power control module is connected to the positive power electrode P+ and the negative power electrode GND of the battery pack module; the output end of the chip power control module is connected to the second node through the first node;

[0008] The power supply voltage adaptation module includes a first switch K1, a first transistor Q1, a first voltage stabilizing chip U1, a second voltage stabilizing chip U2, a resistor R1, a resistor R2, a resistor R3, a diode D1 and a third node VREG_12V;

[0009] The first end of the first switch K1 is connected to the second node, the second end of the first switch K1 is connected to the first end of the resistor R2, the second end of the resistor R2 is connected to the first end of the resistor R1 and the emitter of the first transistor Q1, the second end of the resistor R1 is connected to the input end of the first voltage regulator chip U1, and the output end of the first voltage regulator chip U1 is connected to the third node VREG_12V;

[0010] The collector of the first transistor Q1 is connected to the second node and the first end of the resistor R3, the base of the first transistor Q1 is connected to the second end of the resistor R3 and the cathode of the diode D1, and the anode of the diode D1 is grounded;

[0011] The third node VREG_12V is connected to the input end of the second voltage stabilizing chip U2 , and the output end of the second voltage stabilizing chip U2 is connected to the power supply pin of the control chip.

[0012] In one embodiment of the present invention, the multifunctional control circuit includes a charging management module, which includes a charging current input pin CHARGE, a voltage sampling pin ADC_IN, a P-MOS transistor Q2, an N-MOS transistor Q3, a diode D2, a diode D3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, and a resistor R9;

[0013] The charging current input pin CHARGE is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the second node;

[0014] The voltage sampling pin ADC_IN is connected to the first end of the resistor R4 and the first end of the resistor R5, the second end of the resistor R4 is connected to the charging current input pin CHARGE, and the second end of the resistor R5 is grounded;

[0015] The source of the P-MOS transistor Q2 is connected to the charging current input pin CHARGE and the first end of the resistor R6, the gate of the P-MOS transistor Q2 is connected to the second end of the resistor R6 and the first end of the resistor R7, the second end of the resistor R7 is connected to the drain of the N-MOS transistor Q3, and the drain of the P-MOS transistor Q2 is connected to the first node;

[0016] The gate of the N-MOS transistor Q3 is connected to the first end of the resistor R8 and the first end of the resistor R9, and the second end of the resistor R8 is connected to the charging control pin of the control chip;

[0017] The second end of the resistor R9 and the source of the N-MOS transistor Q3 are both grounded.

[0018] In one embodiment of the present invention, the chip power control module includes a switching unit, which includes a resistor R10, a resistor R11, a P-MOS tube Q4 and a diode D5. The source of the P-MOS tube Q4 is connected to the positive power supply P+ of the battery pack module, the gate of the P-MOS tube Q4 is connected to its source through the resistor R10, and the drain of the P-MOS tube Q4 is connected to the first node; one end of the resistor R11 is connected to the gate of the P-MOS tube Q4, and the other end is connected to the positive electrode of the diode D5.

[0019] In one embodiment of the present invention, the chip power control module also includes a first start-up unit, which includes a start-up button. The first end of the start-up button is connected to the cathode of the diode D5, and the second end is connected to the negative power supply GND of the battery pack module.

[0020] In one embodiment of the present invention, the chip power control module also includes a second startup unit, which includes an N-MOS tube Q5 and an external signal control pin, the external signal control pin is connected to the gate of the N-MOS tube Q5, the drain of the N-MOS tube Q5 is connected to the cathode of the diode D5, and the source of the N-MOS tube Q5 is connected to the negative power supply GND of the battery pack module.

[0021] In one embodiment of the present invention, the second startup unit further includes a resistor R15 , a first end of the resistor R15 is connected to the external signal control pin, and a second end of the resistor R15 is connected to the source of the N-MOS transistor Q5 .

[0022] In one embodiment of the present invention, the chip power control module further includes a holding unit, which includes an N-MOS transistor Q6, a resistor R12 and a resistor R13; the first end of the resistor R12 is connected to the power supply control pin POWER_ON of the control chip, and the second end thereof is connected to the gate of the N-MOS transistor Q6 and the first end of the resistor R13, and the second end of the resistor R13 is connected to the source of the N-MOS transistor Q6; the source of the N-MOS transistor Q6 is connected to the negative power supply GND of the battery pack module, and the drain of the N-MOS transistor Q6 is connected to the positive electrode of the diode D5.

[0023] In one embodiment of the present invention, the chip power control module also includes a diode D4 and a resistor R14, the cathode of the diode D4 is connected to the cathode of the diode D5, the anode of the diode D4 is connected to the first end of the resistor R14, and the second end of the resistor R14 is connected to the power supply pin of the control chip.

[0024] In one embodiment of the present invention, the supply voltage adaptation module further includes a second switch K2 and a resistor R16, wherein a first end of the second switch K2 is connected to a first end of the resistor R16, and a second end of the resistor R16 is connected to the third node VREG_12V.

[0025] Based on the same inventive concept, the present invention also provides a motor controller including the multifunctional control circuit.

[0026] The above technical solution of the present invention has the following advantages over the prior art:

[0027] The present invention integrates a multifunctional control circuit, a battery charging management control unit with a charging current detection function, and an intelligent power supply step-down circuit, thereby widening the input voltage range and eliminating the need for an external power supply circuit. The built-in board-level power control master switch supports external control of the entire board power switch. At the same time, the power supply and motor drive are integrated, enhancing the board-level EMC performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of a multifunctional control circuit provided in an embodiment of the present invention;

[0030] Figure 2 1 is a schematic diagram of a process of controlling a power supply control module of a control chip provided in an embodiment of the present invention;

[0031] Figure 3is a schematic diagram of the charging process of the battery pack module provided in an embodiment of the present invention;

[0032] Figure 4 1 is a schematic diagram of a specific structure of a multifunctional control circuit provided in an embodiment of the present invention;

[0033] Explanation of the accompanying drawings in the specification: 1. Battery pack module; 2. Chip power control module; 21. On / off unit; 22. First start-up unit; 23. Second start-up unit; 3. Power supply voltage adaptation module; 4. Control chip; 5. Charging management module; PP+, first node; VBB, second node. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0035] Example 1:

[0036] like Figures 1 to 4 As shown, the present invention provides a multifunctional control circuit, which includes: a battery pack module 1, a first node PP+, a second node VBB, a chip power control module 2, a supply voltage adapter module 3 and a control chip 4;

[0037] The input end of the chip power control module 2 is connected to the positive power electrode P+ and the negative power electrode GND of the battery pack module 1; the output end of the chip power control module 2 is connected to the second node VBB through the first node PP+;

[0038] The power supply voltage adaptation module 3 includes a first switch K1, a first transistor Q1, a first voltage stabilizing chip U1, a second voltage stabilizing chip U2, a resistor R1, a resistor R2, a resistor R3, a diode D1 and a third node VREG_12V;

[0039] The first end of the first switch K1 is connected to the second node VBB, the second end of the first switch K1 is connected to the first end of the resistor R2, the second end of the resistor R2 is connected to the first end of the resistor R1 and the emitter of the first transistor Q1, the second end of the resistor R1 is connected to the input end of the first voltage regulator chip U1, and the output end of the first voltage regulator chip U1 is connected to the third node VREG_12V;

[0040] The collector of the first transistor Q1 is connected to the second node VBB and the first end of the resistor R3, the base of the first transistor Q1 is connected to the second end of the resistor R3 and the cathode of the diode D1, and the anode of the diode D1 is grounded;

[0041] The third node VREG_12V is connected to the input end of the second voltage stabilizing chip U2 , and the output end of the second voltage stabilizing chip U2 is connected to the power supply pin of the control chip 4 .

[0042] It can be seen from the above technical solution that the present invention realizes multiple ways of controlling chip power supply and continuous power supply through the chip power supply control module. The power supply voltage adaptation module can intelligently adjust according to the different power supply voltages of the battery pack to stabilize the output voltage and reduce the heat generation power. The charging management module can detect the charging voltage and automatically turn on the charging circuit when appropriate. The overall circuit design is simplified, the cost is reduced, the power supply adaptability, stability and charging safety are improved, and different application requirements are met.

[0043] Furthermore, the supply voltage adaptation module 3 further includes a second switch K2 and a resistor R16 , wherein a first end of the second switch K2 is connected to a first end of the resistor R16 , and a second end of the resistor R16 is connected to the third node VREG_12V.

[0044] Assuming that the power supply voltage of the control chip 4 is 12V, when the power supply voltage of the battery pack module 1 does not exceed 15V, the voltage received by the second node VBB does not exceed 14.3V, and the difference with the power supply voltage of the control chip 4 is small. Therefore, the second switch K2 is closed and the voltage is divided by the resistor R16 to ensure that the voltage value of the third node VREG_12V is equal to 12V.

[0045] When the power supply voltage of the battery pack module 1 is greater than 15V and less than or equal to 27V, since the voltage difference between the motor controller of 6S and below and the first voltage regulator chip U1 is small when running, the heat power generated by the voltage regulator chip is also relatively small, so the second switch K2 is opened and the first switch K1 is closed. After the voltage is divided by the resistor R2 and the resistor R1, the voltage will pass through the first voltage regulator chip U1 to stabilize the output voltage at 12V.

[0046] When the supply voltage of the battery pack module 1 is greater than 27V, if the first voltage regulator chip U1 is used directly for voltage stabilization, the heat power generated by the control chip 4 is relatively large, and a voltage reduction process needs to be performed before the voltage regulator chip. At this time, the first switch K1 and the second switch K2 are disconnected, and the voltage of the second node VBB flows to the collector C of the first transistor Q1, and also flows to the base of the first transistor Q1 through the resistor R3. If the voltage regulation value of the diode D1 is 20V, the voltage value at the base of the first transistor Q1 is 20V, the potential of the collector is higher than that of the base, and the potential of the base is higher than that of the emitter, then the first transistor Q1 is turned on, and the voltage at the emitter of the first transistor Q1 is about 19.3V. At this time, after passing through the resistor R1 and then through the first voltage regulator chip U1 for voltage stabilization, the heat power generated by the control chip 4 will be reduced, and the voltage at the third node VREG_12V is also stabilized at 12V.

[0047] The third node VREG is connected to the input end of the second voltage stabilizing chip U2 , and the 12V voltage is processed by the second voltage stabilizing chip U2 and outputted as the operating voltage of the control chip 4 to be 5V.

[0048] like Figure 3 As shown, the chip power control module 2 includes a switching unit 21 , a first starting unit 22 , a second starting unit 23 and a holding unit 24 .

[0049] Among them, the on-off unit 21 includes a resistor R10, a resistor R11, a P-MOS transistor Q4 and a diode D5. The source of the P-MOS transistor Q4 is connected to the positive power supply P+ of the battery pack module 1, the gate of the P-MOS transistor Q4 is connected to its source through the resistor R10, and the drain of the P-MOS transistor Q4 is connected to the first node PP+; one end of the resistor R11 is connected to the gate of the P-MOS transistor Q4, and the other end is connected to the positive electrode of the diode D5.

[0050] The first starting unit 22 includes a starting button KEY_IN, a first end of the starting button KEY_IN is connected to the cathode of the diode D5 , and a second end thereof is connected to the negative power supply GND of the battery pack module 1 .

[0051] The second startup unit 23 includes an N-MOS transistor Q5, an external signal control pin ON / OFF_IN, and a resistor R15. The external signal control pin ON / OFF_IN is connected to the gate of the N-MOS transistor Q5, the drain of the N-MOS transistor Q5 is connected to the cathode of the diode D5, and the source of the N-MOS transistor Q5 is connected to the negative power supply GND of the battery pack module 1. A first end of the resistor R15 is connected to the external signal control pin, and a second end thereof is connected to the source of the N-MOS transistor Q5.

[0052] The holding unit 24 includes an N-MOS transistor Q6, a resistor R12 and a resistor R13; the first end of the resistor R12 is connected to the power supply control pin POWER_ON of the control chip 4, and the second end thereof is connected to the gate of the N-MOS transistor Q6 and the first end of the resistor R13, and the second end of the resistor R13 is connected to the source of the N-MOS transistor Q6; the source of the N-MOS transistor Q6 is connected to the negative power supply GND of the battery pack module 1, and the drain of the N-MOS transistor Q6 is connected to the positive electrode of the diode D5.

[0053] Based on the above technical solution, the control chip 4 can control the on / off state of the on / off unit 21 through the first starting unit 22 and the second starting unit 23 so that the control chip 4 can be powered.

[0054] When the first start-up unit 22 is used to control the on / off state of the on / off unit 21, after the external start button KEY_IN is pressed, the start button KEY_IN is connected to the negative power supply terminal GND of the battery pack module 1. At this time, current flows out of the positive power supply terminal P+ of the battery pack module 1, passes through the resistor R10 and the resistor R11, and flows to the anode of the diode D5. Since the cathode of the diode D5 is at a low level, the diode D5 is turned on, and the current flows to the pin KEY_IN, that is, GND. In this loop, due to the flow of current, a voltage drop is formed across the resistor R10, causing the potential of the source of the P-MOS transistor Q4 to be higher than the potential of the gate of the P-MOS transistor Q4. Therefore, the P-MOS transistor Q4 is turned on, and current flows from the positive power supply terminal P+ to the first node PP+ and then to the anode of the diode D3. Due to the unidirectional conductivity of the diode, the diode D3 is turned on, and the current flows to the second node VBB. At this time, the control chip 4 is powered.

[0055] Because conventional motor controller circuits lack external buttons, the second activation unit 23 can be used to control the on / off state of the on / off unit 21. Specifically, by setting the external signal control pin ON / OFF_IN to a high level through an external device, the gate of the N-MOS transistor Q5 receives a high-level input, creating a potential difference between its gate and its source, causing the N-MOS transistor Q5 to turn on.

[0056] When the N-MOS transistor Q5 is turned on, the cathode of the diode D5 is electrically connected to the negative power supply GND of the battery pack module 1. When the battery pack module 1 is in the discharge state, current flows from the positive power supply P+ of the battery pack module 1, through the resistors R10 and R11, and to the anode of the diode D5. Because the cathode of the diode D5 is connected to the negative power supply GND through the turned-on N-MOS transistor Q5, a low level is generated. Due to the principle of unidirectional conductivity of the diode, the diode D5 is turned on.

[0057] In this current loop, current flows through resistor R10, generating a voltage drop across resistor R10 based on Ohm's law. This voltage drop causes the source potential of P-MOS transistor Q4 to be higher than the gate potential. When this potential difference meets the turn-on threshold of P-MOS transistor Q4, P-MOS transistor Q4 turns on.

[0058] When the P-MOS transistor Q4 turns on, current flows from the power supply's positive electrode P+ to the first node PP+, and then to the anode of the diode D3. Due to the diode's unidirectional conductivity, diode D3 turns on, and current continues to flow to the second node VBB, ultimately supplying power to the control chip 4. This solution enables power on / off control without the need for an external button, meeting diverse application requirements.

[0059] When the control chip 4 is operating, its power supply control pin POWER_ON is set to a high level. Since the source S-pole of the N-MOS transistor Q6 is connected to the negative power supply GND, the gate of the N-MOS transistor Q6 receives a high level after voltage division by the resistors R12 and R13. Therefore, the gate G-pole potential of the N-MOS transistor Q6 is higher than the source S-pole of the N-MOS transistor Q6. The N-MOS transistor Q6 is turned on, and current flows to the negative power supply GND, forming a loop. In this loop, since the N-MOS transistor Q6 is turned on and connected to the negative power supply GND, it is equivalent to the pin KEY_IN being connected to GND when a key is pressed. Therefore, when the power supply control pin POWER_ON is set to a high level, current can also flow through the positive power supply P+ to the first node PP+, so that the control chip 4 is powered. Therefore, when the control chip 4 is powered for the first time, the key can be released, and the control chip 4 will operate normally.

[0060] Furthermore, the chip power control module 2 also includes a diode D4 and a resistor R14, the cathode of the diode D4 is connected to the cathode of the diode D5, the anode of the diode D4 is connected to the first end of the resistor R14, and the second end of the resistor R14 is connected to the power supply pin of the control chip 4.

[0061] Because the diode has unidirectional conductivity, diode D4 prevents the voltage at the power supply pin of control chip 4 from flowing back to the cathode of diode D5. This prevents damage to components such as P-MOS transistor Q4 and diode D5 in chip power control module 2 caused by abnormal voltage fluctuations, ensuring that these components can function normally and thus ensuring normal power supply to control chip 4. Resistor R14 cooperates with diode D4 to perform voltage division and current limiting functions. It regulates the current flowing to the power supply pin of control chip 4, preventing excessive current from impacting the control chip 4 and providing a stable supply current for the control chip 4.

[0062] In addition, in this embodiment, the multifunctional control circuit includes a charging management module 5, which includes a charging current input pin CHARGE, a voltage sampling pin ADC_IN, a P-MOS transistor Q2, an N-MOS transistor Q3, a diode D2, a diode D3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, and a resistor R9;

[0063] The charging current input pin CHARGE is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the second node VBB;

[0064] The voltage sampling pin ADC_IN is connected to the first end of the resistor R4 and the first end of the resistor R5, the second end of the resistor R4 is connected to the charging current input pin CHARGE, and the second end of the resistor R5 is grounded;

[0065] The source of the P-MOS transistor Q2 is connected to the charging current input pin CHARGE and the first end of the resistor R6, the gate of the P-MOS transistor Q2 is connected to the second end of the resistor R6 and the first end of the resistor R7, the second end of the resistor R7 is connected to the drain of the N-MOS transistor Q3, and the drain of the P-MOS transistor Q2 is connected to the first node PP+;

[0066] The gate of the N-MOS transistor Q3 is connected to the first end of the resistor R8 and the first end of the resistor R9, and the second end of the resistor R8 is connected to the charging control pin CHG_EN of the control chip 4;

[0067] The second end of the resistor R9 and the source of the N-MOS transistor Q3 are both grounded.

[0068] Specifically, when an adapter charges the battery pack module 1 through the charging current input pin CHARGE, current will flow from the charging current input pin CHARGE to the positive electrode of the diode D2. According to the unidirectional conductivity of the diode, the diode D2 is turned on and the current flows to the second node VBB, thereby the control chip 4 is powered.

[0069] After the control chip 4 is powered, it detects the voltage at the voltage sampling pin ADC_IN, and determines whether the charging voltage is suitable based on the resistor R4 and the resistor R5. The voltage of the charging current input pin CHARGE is recorded as V CHARGE The voltage at the voltage sampling pin ADC_IN is recorded as V ADC ,

[0070] If the control chip 4 determines that the charging voltage V CHARGE If the voltage is not within the set range, the charging control pin CHG_EN and the power supply control pin POWER_ON will not be turned on, thereby avoiding charging the battery pack module 1 at an inappropriate voltage, ensuring the safety of the charging process and the service life of the battery.

[0071] If the control chip 4 determines that the charging voltage V CHARGE When the voltage is within the set voltage range, the control chip 4 sets its charging control pin CHG_EN and power supply control pin POWER_ON to a high level. At this time, the gate of the N-MOS tube Q3 is at a high level, and the source of the N-MOS tube Q3 is connected to GND. Therefore, the N-MOS tube Q3 is turned on, and current flows from the charging current input pin CHARGE through the resistor R6 and the resistor R7, and the turned-on N-MOS tube Q3 to the negative power supply GND of the battery pack module 1. In this loop, current flowing through resistor R6 forms a voltage drop, causing the potential of the source of the P-MOS transistor Q2 to be higher than the potential of the gate G of the P-MOS transistor Q2. Therefore, the P-MOS transistor Q2 is turned on, and the charging current flows through the P-MOS transistor Q2 and then flows to the first node PP+. Since the power supply control pin POWER_ON is set to a high level, the N-MOS transistor Q6 is turned on, and the potential of the drain D of the N-MOS transistor Q6 is the value obtained by dividing the voltage of the resistors R13 and R12. The gate of the P-MOS transistor Q4 is connected to the drain D of the N-MOS transistor Q6 through the resistor R11. The potential of the gate of the P-MOS transistor Q4 is higher than the potential of the source S of the P-MOS transistor Q4. The P-MOS transistor Q4 is turned on, and the current flows through the first node PP+ to the positive power supply electrode P+ of the battery pack module 1, and finally flows to the negative power supply electrode GND of the battery pack module 1 to form a loop.

[0072] Example 2:

[0073] Based on the same inventive concept as the multifunctional control circuit described in the first embodiment, the present invention further provides a motor controller, comprising the multifunctional control circuit described in the first embodiment.

[0074] Specifically, the output voltage is intelligently and flexibly adjusted by the supply voltage adaptation module 3 based on the varying supply voltages of the battery pack module 1. In practical applications of motor controllers, this feature enables the motor to operate stably within a wider supply voltage range, eliminating the risk of motor performance degradation or damage due to voltage fluctuations. This significantly enhances the motor's adaptability to diverse power supply environments.

[0075] Through the chip power control module 2, the motor controller ensures stable and reliable power to the control chip 4. Whether starting with an external button or an external signal, it precisely controls the power on / off, providing a solid power supply for stable motor operation. This stable power supply helps reduce jitter and anomalies during motor operation, improving motor efficiency and reliability.

[0076] The charging management module 5 plays a crucial role in the motor controller. It monitors the charging voltage in real time and activates the charging circuit only when the charging voltage is within a set range. This prevents safety hazards such as overcharging and over-discharging, effectively protecting the battery pack module 1 and the motor controller, and extending the battery's service life.

[0077] On industrial production lines, this motor controller can be used to drive various mechanical equipment, such as conveyor belts and robotic arms. The integration of multifunctional control circuits enables the motor to quickly and accurately adjust its operating state based on different production tasks, improving production efficiency and product quality. Furthermore, its high stability and safety also meet the long-term stable operation requirements of industrial production equipment.

[0078] In smart home systems, this motor controller can be applied to devices such as electric curtains, smart door locks, robot vacuums, and cordless vacuum cleaners. Users can conveniently control the operation of the motor through mobile phone apps or voice control, achieving automation and intelligent home appliances. The flexibility and adaptability of the multifunctional control circuit enable better integration of motors into smart home systems, providing users with a more convenient and comfortable living experience.

[0079] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A multifunctional control circuit, characterized in that: include: Battery pack module, first node, second node, chip power control module, power supply voltage adapter module and control chip; The input end of the chip power control module is connected to the positive power electrode P+ and the negative power electrode GND of the battery pack module; the output end of the chip power control module is connected to the second node through the first node; The power supply voltage adaptation module includes a first switch K1, a first transistor Q1, a first voltage stabilizing chip U1, a second voltage stabilizing chip U2, a resistor R1, a resistor R2, a resistor R3, a diode D1 and a third node VREG_12V; The first end of the first switch K1 is connected to the second node, the second end of the first switch K1 is connected to the first end of the resistor R2, the second end of the resistor R2 is connected to the first end of the resistor R1 and the emitter of the first transistor Q1, the second end of the resistor R1 is connected to the input end of the first voltage regulator chip U1, and the output end of the first voltage regulator chip U1 is connected to the third node VREG_12V; The collector of the first transistor Q1 is connected to the second node and the first end of the resistor R3, the base of the first transistor Q1 is connected to the second end of the resistor R3 and the cathode of the diode D1, and the anode of the diode D1 is grounded; The third node VREG_12V is connected to the input end of the second voltage stabilizing chip U2 , and the output end of the second voltage stabilizing chip U2 is connected to the power supply pin of the control chip.

2. The multifunctional control circuit according to claim 1, characterized in that: The multifunctional control circuit includes a charging management module, which includes a charging current input pin CHARGE, a voltage sampling pin ADC_IN, a P-MOS transistor Q2, an N-MOS transistor Q3, a diode D2, a diode D3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and a resistor R9; The charging current input pin CHARGE is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the second node; The voltage sampling pin ADC_IN is connected to the first end of the resistor R4 and the first end of the resistor R5, the second end of the resistor R4 is connected to the charging current input pin CHARGE, and the second end of the resistor R5 is grounded; The source of the P-MOS transistor Q2 is connected to the charging current input pin CHARGE and the first end of the resistor R6, the gate of the P-MOS transistor Q2 is connected to the second end of the resistor R6 and the first end of the resistor R7, the second end of the resistor R7 is connected to the drain of the N-MOS transistor Q3, and the drain of the P-MOS transistor Q2 is connected to the first node; The gate of the N-MOS transistor Q3 is connected to the first end of the resistor R8 and the first end of the resistor R9, and the second end of the resistor R8 is connected to the charging control pin of the control chip; The second end of the resistor R9 and the source of the N-MOS transistor Q3 are both grounded.

3. The multifunctional control circuit according to claim 1, characterized in that: The chip power control module includes an on-off unit, which includes a resistor R10, a resistor R11, a P-MOS tube Q4 and a diode D5. The source of the P-MOS tube Q4 is connected to the positive power supply P+ of the battery pack module, the gate of the P-MOS tube Q4 is connected to its source through the resistor R10, and the drain of the P-MOS tube Q4 is connected to the first node; one end of the resistor R11 is connected to the gate of the P-MOS tube Q4, and the other end is connected to the positive electrode of the diode D5.

4. The multifunctional control circuit according to claim 3, characterized in that: The chip power control module also includes a first start unit, which includes a start button. The first end of the start button is connected to the cathode of the diode D5, and the second end is connected to the negative power supply GND of the battery pack module.

5. The multifunctional control circuit according to claim 3, characterized in that: The chip power control module also includes a second startup unit, which includes an N-MOS tube Q5 and an external signal control pin. The external signal control pin is connected to the gate of the N-MOS tube Q5, the drain of the N-MOS tube Q5 is connected to the cathode of the diode D5, and the source of the N-MOS tube Q5 is connected to the negative power supply GND of the battery pack module.

6. The multifunctional control circuit according to claim 5, characterized in that: The second startup unit further includes a resistor R15 , a first end of the resistor R15 is connected to the external signal control pin, and a second end of the resistor R15 is connected to the source of the N-MOS transistor Q5 .

7. The multifunctional control circuit according to claim 3, characterized in that: The chip power control module also includes a holding unit, which includes an N-MOS tube Q6, a resistor R12 and a resistor R13; the first end of the resistor R12 is connected to the power supply control pin POWER_ON of the control chip, and the second end thereof is connected to the gate of the N-MOS tube Q6 and the first end of the resistor R13, and the second end of the resistor R13 is connected to the source of the N-MOS tube Q6; the source of the N-MOS tube Q6 is connected to the negative power supply GND of the battery pack module, and the drain of the N-MOS tube Q6 is connected to the positive electrode of the diode D5.

8. The multifunctional control circuit according to claim 3, characterized in that: The chip power control module also includes a diode D4 and a resistor R14, the cathode of the diode D4 is connected to the cathode of the diode D5, the anode of the diode D4 is connected to the first end of the resistor R14, and the second end of the resistor R14 is connected to the power supply pin of the control chip.

9. The multifunctional control circuit according to claim 1, characterized in that: The supply voltage adaptation module further includes a second switch K2 and a resistor R16 , wherein a first end of the second switch K2 is connected to a first end of the resistor R16 , and a second end of the resistor R16 is connected to the third node VREG_12V.

10. A motor controller, characterized in that: The invention comprises the multifunctional control circuit according to any one of claims 1 to 9.

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