Higher-efficiency stepped power supply system for machine joint

Abstract

According to the power source stepped power supply system for the machine joint, the efficiency is higher, three stepped circuits are used in a machine joint circuit, and each circuit comprises a chip. The first-order circuit reduces the input power supply voltage to 12V, meanwhile, compared with a traditional circuit, the improved first-order circuit is additionally provided with a current-limiting protection function, the second-order circuit reduces the 12V voltage to 5V, and the third-order circuit reduces the 5V voltage to 3.3 V. Power is supplied to different loads through the method, and higher efficiency and more stable power supply can be achieved. Compared with a traditional power supply mode, the scheme of the patent is more stable and reliable, the working efficiency of the machine joint can be effectively improved, stable operation of the machine is ensured, and the practical value is high.

Description

Technical Field

[0001] The invention belongs to the field of power supply systems, and in particular to a power ladder power supply system for machine joints with higher efficiency. Background Art

[0002] At present, with the advancement of human science and technology, robots can replace humans to work in harsh environments. In the high-precision electronic equipment of robots, the stability and reliability of robot power supply are very important, which can not only improve the performance and work efficiency of the equipment, but also extend the service life of the equipment.

[0003] The existing power supply methods mainly include linear regulated power supplies and switching regulated power supplies. Linear regulated power supplies are low in cost, but low in efficiency and prone to heat in high-power applications. Switching regulated power supplies have high efficiency, but high cost and are prone to noise. The step voltage circuit is a circuit that reduces high voltage to low voltage. It is usually composed of multiple cascade circuits and can achieve higher energy utilization and more stable voltage output. Summary of the invention

[0004] The present invention is mainly to solve the problems in the prior art that the power supply has low efficiency and low energy utilization, resulting in energy waste and heat generation. The poor stability of the power supply may lead to problems such as low working efficiency, performance degradation, and shortened life of equipment such as machine joints. The present invention provides a more efficient power ladder power supply system for machine joints. Through the design of ladder voltage and the improvement of the design of traditional second-order circuits, a power supply circuit that provides a more stable voltage for each load is realized, which provides better technical means for the design of machine joints and also broadens the application field.

[0005] The above-mentioned invention object of the present invention is achieved through the following technical solutions: A more efficient power ladder power supply system for machine joints, wherein three ladder circuits are used in the circuit of the machine joints, each circuit includes a control chip, and the control chips of the first-order circuit, the second-order circuit and the third-order circuit are chip U2, chip U1 and chip U3 respectively.

[0006] The first-order circuit is composed of power supply voltage PVDD, ground wire GND, power supply voltage VCC-12V, chip U2, capacitors, resistors and other components. The power supply voltage PVDD is connected to the left end of diode D1, the power supply voltage PVDD is connected to the upper end of Zener diode D4, the right end of diode D1 is connected to the left end of resistor R2, and the right end of resistor R2 is connected to pin 2 of chip U2. Pin 2 of the chip U2 is respectively connected to the left end of the resistor R3, the upper end of the resistor R5, the upper end of the capacitor C12, and the upper end of the capacitor C13. Pin 4 of the chip U2 is connected to the right end of the resistor R3. Pin 3 of the chip U2 is connected to the lower end of the resistor R5 and the upper end of the resistor R10. Pin 7 of the chip U2 is connected to the left side of the capacitor C4, and the right side of the capacitor C4 is connected to the left side of the inductor L2. Pin 8 of the chip U2 is connected to the left side of the inductor L2, and the right side of the inductor L2 is connected to the power supply voltage VCC-12V. The left end of the resistor R1 is connected to the left end of the inductor L2, the right end of the resistor R1 is connected to the left end of the capacitor C1, and the right end of the capacitor C1 is connected to the right end of the inductor L2. Pin 6 of the chip U2 is connected to the diode The left side of D3 and the right side of the diode D3 are connected to the power supply voltage VCC-12V, the pin 5 of the chip U2 is connected to the upper end of the capacitor C15, the lower end of the capacitor C5, the lower end of the resistor R4 and the upper end of the resistor R9, the upper end of the capacitor C5 and the upper end of the resistor R4 are connected to the power supply voltage VCC-12V, the power supply voltage VCC-12V is connected to the upper end of the capacitor C6 and the upper end of the capacitor C7, the lower end of the capacitor C6 is connected to the upper end of the resistor R8, the lower end of the resistor R8 is connected to the ground wire GND, the lower end of the voltage regulator diode D4, the lower end of the capacitor C12, the lower end of the capacitor C13, the lower end of the resistor R10, the pin 1 of the chip U2, the pin 0 of the chip U2, the lower end of the capacitor C15, the lower end of the resistor R9, and the lower end of the capacitor C7 are connected to the ground wire GND.

[0007] The second-order circuit is composed of a power supply voltage VCC-12V, a stabilized power supply 12V0, a ​​ground wire GND, a power supply voltage VCC-5V, a stabilized power supply 5V0, a ​​control chip U1, capacitors, resistors and other components. The left end of the power supply voltage VCC-12V is connected to the right end of the capacitor C2, and the right end of the power supply voltage VCC-12V outputs a 12V stabilized power supply 12V0. The stabilized power supply 12V0 is connected to pin 5 of chip U1 and the left end of resistor R6. The right end of resistor R6 is connected to pin 4 of chip U1, and pin 1 of chip U1 is The left end of the capacitor C3 is connected, pin 6 of the chip U1 is connected to the left end of the inductor L1 and the left end of the diode D2, pin 3 of the chip U1 is connected to the upper end of the resistor R11 and the left end of the resistor R7, the right end of the inductor L1, the right end of the resistor R7 and the upper end of the capacitor C14 are connected to the power supply voltage VCC-5V, the right end of the power supply voltage VCC-5V outputs the regulated power supply 5V0, the left end of the capacitor C2, pin 2 of the chip U1, the lower end of the resistor R11, the right end of the diode D2 and the lower end of the capacitor C14 are connected to the ground wire GND.

[0008] The third-order circuit is composed of components such as power supply voltage VCC-5V, ground wire GND, power supply voltage VCC-3.3V, control chip U3 and capacitors. The power supply voltage VCC-5V is connected to the upper end of capacitor C8, the upper end of capacitor C9 and pin 3 of chip U3, the power supply voltage VCC-3.3V is connected to the upper end of capacitor C10, the upper end of capacitor C11 and pin 2 of chip U3, and the lower end of capacitor C8, the lower end of capacitor C9, the lower end of capacitor C10, the lower end of capacitor C11 and pin 1 of chip U3 are connected to the ground wire GND.

[0009] The input power supply voltage is reduced to 12V. At the same time, the improved first-order circuit adds the function of current limiting protection compared to the traditional circuit. The second-order circuit reduces the 12V voltage to 5V, and the third-order circuit reduces the 5V voltage to 3.3V. Among them, the 12V voltage is used to drive the mechanical joints, the 5V voltage is only a transitional voltage used to alleviate overvoltage, and the 3.3V voltage is used to power some chips and components. In this way, higher efficiency and more stable power supply can be achieved. This patented solution is more stable and reliable than traditional power supply methods, can effectively improve the working efficiency of machine joints, ensure the stable operation of the machine, and has high practical value.

[0010] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The three-step step-down method is adopted to make the circuit output stable 12V, 5V and 3.3V voltages. Among them, 12V is the driving power supply for the mechanical joints, 5V voltage is only a transitional voltage used to alleviate overvoltage, and 3.3V voltage is used to power some chips and components. Compared with the traditional two-step step-down circuit, the circuit can achieve higher energy utilization efficiency while ensuring stability and reliability, thereby enhancing the dynamic performance of the machine joints.

[0011] 2. Compared with the traditional two-stage step-down circuit, the function of current limiting protection is added, which can effectively protect the machine joint circuit from abnormal conditions such as short circuit, thereby improving the safety of the circuit.

[0012] 3. The multi-stage step-down method can adapt to the voltage requirements of different components and chips, and because each circuit has a corresponding control chip, more precise voltage control can be achieved, thereby improving the stability and reliability of the machine joint circuit and reducing the power supply heating and power loss of the circuit under full load.

[0013] 4. The design of the power circuit is more compatible with the driver board, saving space. The use of fewer power circuit components optimizes the driver board layout of the machine joints. The power circuit occupies a smaller space, saving a lot of space resources and overcoming the disadvantage of the traditional machine joints being too large. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a diagram of a power ladder power supply method for a machine joint of the present invention; Figure 2 It is a first-order power supply circuit diagram for the machine joint of the present invention; Figure 3 is a second-order power supply circuit diagram for a machine joint of the present invention; Figure 4 It is a third-order power supply circuit diagram for the machine joint of the present invention; Figure 5 It is a second-order power supply circuit diagram for traditional machine joints; In the figure: PVDD power supply voltage, VCC-12V, VCC-5V, VCC-3.3V power supply voltage, 12V0, 5V0 voltage regulator, ground GND, U1 chip, U2 chip, U3 chip, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 resistors, C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15 capacitors, D1, D2, D3 diodes, D4 voltage regulator diode, L1, L2 inductors. Implementation

[0015] The present invention is mainly to solve the problems in the prior art that the power supply has low efficiency and low energy utilization, resulting in energy waste and heat generation. The poor stability of the power supply may lead to problems such as low working efficiency, performance degradation, and shortened life of equipment such as machine joints. The present invention provides a more efficient power ladder power supply system for machine joints. Through the design of ladder voltage and the improvement of the design of traditional second-order circuits, a power supply circuit that provides a more stable voltage for each load is realized, which provides better technical means for the design of machine joints and also broadens the application field.

[0016] The above-mentioned invention object of the present invention is achieved through the following technical solutions: A more efficient power ladder power supply system for machine joints, wherein three ladder circuits are used in the circuit of the machine joints, each circuit includes a control chip, and the control chips of the first-order circuit, the second-order circuit and the third-order circuit are chip U2, chip U1 and chip U3 respectively.

[0017] The first-order circuit is composed of power supply voltage PVDD, ground wire GND, power supply voltage VCC-12V, chip U2, capacitors, resistors and other components. The power supply voltage PVDD is connected to the left end of diode D1, the power supply voltage PVDD is connected to the upper end of Zener diode D4, the right end of diode D1 is connected to the left end of resistor R2, and the right end of resistor R2 is connected to pin 2 of chip U2. Pin 2 of the chip U2 is respectively connected to the left end of the resistor R3, the upper end of the resistor R5, the upper end of the capacitor C12, and the upper end of the capacitor C13. Pin 4 of the chip U2 is connected to the right end of the resistor R3. Pin 3 of the chip U2 is connected to the lower end of the resistor R5 and the upper end of the resistor R10. Pin 7 of the chip U2 is connected to the left side of the capacitor C4, and the right side of the capacitor C4 is connected to the left side of the inductor L2. Pin 8 of the chip U2 is connected to the left side of the inductor L2, and the right side of the inductor L2 is connected to the power supply voltage VCC-12V. The left end of the resistor R1 is connected to the left end of the inductor L2, the right end of the resistor R1 is connected to the left end of the capacitor C1, and the right end of the capacitor C1 is connected to the right end of the inductor L2. Pin 6 of the chip U2 is connected to the diode The left side of D3 and the right side of the diode D3 are connected to the power supply voltage VCC-12V, the pin 5 of the chip U2 is connected to the upper end of the capacitor C15, the lower end of the capacitor C5, the lower end of the resistor R4 and the upper end of the resistor R9, the upper end of the capacitor C5 and the upper end of the resistor R4 are connected to the power supply voltage VCC-12V, the power supply voltage VCC-12V is connected to the upper end of the capacitor C6 and the upper end of the capacitor C7, the lower end of the capacitor C6 is connected to the upper end of the resistor R8, the lower end of the resistor R8 is connected to the ground wire GND, the lower end of the voltage regulator diode D4, the lower end of the capacitor C12, the lower end of the capacitor C13, the lower end of the resistor R10, the pin 1 of the chip U2, the pin 0 of the chip U2, the lower end of the capacitor C15, the lower end of the resistor R9, and the lower end of the capacitor C7 are connected to the ground wire GND.

[0018] The second-order circuit is composed of a power supply voltage VCC-12V, a stabilized power supply 12V0, a ​​ground wire GND, a power supply voltage VCC-5V, a stabilized power supply 5V0, a ​​control chip U1, capacitors, resistors and other components. The left end of the power supply voltage VCC-12V is connected to the right end of the capacitor C2, and the right end of the power supply voltage VCC-12V outputs the stabilized power supply 12V0. The stabilized power supply 12V0 is connected to pin 5 of chip U1 and the left end of resistor R6. The right end of resistor R6 is connected to pin 4 of chip U1, and pin 1 of chip U1 is connected to The left end of the capacitor C3 is connected, pin 6 of the chip U1 is connected to the left end of the inductor L1 and the left end of the diode D2, pin 3 of the chip U1 is connected to the upper end of the resistor R11 and the left end of the resistor R7, the right end of the inductor L1, the right end of the resistor R7 and the upper end of the capacitor C14 are connected to the power supply voltage VCC-5V, the right end of the power supply voltage VCC-5V outputs the regulated power supply 5V0, the left end of the capacitor C2, pin 2 of the chip U1, the lower end of the resistor R11, the right end of the diode D2 and the lower end of the capacitor C14 are connected to the ground wire GND.

[0019] The third-order circuit is composed of components such as power supply voltage VCC-5V, ground wire GND, power supply voltage VCC-3.3V, control chip U3 and capacitors. The power supply voltage VCC-5V is connected to the upper end of capacitor C8, the upper end of capacitor C9 and pin 3 of chip U3, the power supply voltage VCC-3.3V is connected to the upper end of capacitor C10, the upper end of capacitor C11 and pin 2 of chip U3, and the lower end of capacitor C8, the lower end of capacitor C9, the lower end of capacitor C10, the lower end of capacitor C11 and pin 1 of chip U3 are connected to the ground wire GND.

[0020] The input power supply voltage is reduced to 12V. At the same time, the improved first-order circuit adds the function of current limiting protection compared to the traditional circuit. The second-order circuit reduces the 12V voltage to 5V, and the third-order circuit reduces the 5V voltage to 3.3V. Among them, the 12V voltage is used to drive the mechanical joints, the 5V voltage is only a transitional voltage used to alleviate overvoltage, and the 3.3V voltage is used to power some chips and components. In this way, higher efficiency and more stable power supply can be achieved. This patented solution is more stable and reliable than traditional power supply methods, can effectively improve the working efficiency of machine joints, ensure the stable operation of the machine, and has high practical value.

[0021] The present invention designs a more efficient power ladder power supply system for machine joints. By adopting a three-step circuit voltage reduction method, it can output stable 12V, 5V and 3.3V voltages, wherein 12V is the driving power supply for the mechanical joints, 5V voltage is only a transitional voltage used to alleviate overvoltage, and 3.3V voltage is used to power some chips and components.

[0022] Specifically, the power supply consists of three ladder circuits, each of which contains a control chip. The first-stage circuit consists of power supply voltage PVDD, ground wire GND, power supply voltage VCC-12V, chip U2, capacitors, resistors and other components. After power is turned on, the power supply voltage PVDD is connected to the circuit, diode D1 is turned on, and the voltage load passes through resistor R2 and is connected to the VIN end of pin 2 of chip U2 to provide power for chip U2. The step-down output BST end of pin 7 of chip U2 is connected to the left end of capacitor C4, the right end of capacitor C4 is connected to the left side of inductor L2 and the left end of resistor R1, the right end of resistor R1 is connected to the left end of capacitor C1, and the right end of capacitor C1 and the right end of inductor L2 are connected to the power supply voltage VCC 12V. The first-stage circuit reduces the input power supply voltage to 12V, and the 12V voltage provides power for the drive and the second-stage circuit with the power supply voltage VCC-12V. Compared with the traditional second-stage power supply circuit diagram for machine joints ( Figure 5 ), the first-order circuit adds a current limiting protection part, that is, resistor R2, diode D1, Zener diode D4, resistor R4, resistor R8, resistor R9, capacitor C6, and capacitor C11 are added. The above components and chip U2 form a loop to increase the current limiting protection function, which can effectively protect the machine joint circuit from abnormal conditions such as short circuit.

[0023] Specifically, the second-stage circuit is composed of components such as power supply voltage VCC-12V, voltage regulator 12V0, ground wire GND, power supply voltage VCC-5V, voltage regulator 5V, control chip U1 and capacitors and resistors. The power supply voltage VCC-12V outputs the voltage regulator 12V0 loaded on pin 5 voltage input VIN of chip U1, pin 2 of chip U1 is grounded, pin 4 EN of chip U1 is connected to 12V voltage regulator 12V0 through resistor R6 as a high level, chip U1 is enabled to start working, pin 1 BST step-down pin of chip U1 works, and a transition voltage of 5V is output through capacitor C3 and inductor L1, that is, the voltage regulator 5V0 is input into the third-stage circuit as the power supply, and the second-stage circuit reduces the 12V voltage to 5V to generate a transition state voltage for alleviating overvoltage and ensuring that the circuit is more stable and reliable.

[0024] Specifically, the third-order circuit is composed of power supply voltage VCC-5V, ground wire GND, power supply voltage VCC-3.3V, chip U3 and capacitors and other components. Chip U3 and capacitors C8, C9, C10, and C11 form a loop and are grounded. The power supply of power supply voltage VCC-5V is loaded on chip U3 through the voltage input Vin of pin 3. When chip U3 is working, the voltage output Vout of pin 2 of chip U3 outputs voltage VCC 3.3V. The third-order circuit reduces the 5V voltage to 3.3V, and supplies power to some chips and components in the circuit. Each circuit in the entire power supply circuit has a corresponding control chip, so that more precise voltage control can be achieved, and the stability and reliability of the machine joint circuit are improved. Since the voltage of each circuit is processed by step-down, it can adapt to the voltage requirements of different components and chips, and at the same time, it can also reduce the power supply heating and power loss of the circuit under full load, thereby improving energy utilization efficiency. In addition, the multi-stage step-down method can also save space, optimize the layout of the drive board of the machine joint, and the power circuit occupies a smaller space, thereby overcoming the disadvantage of the traditional machine joint being too large. Therefore, the power ladder power supply method for the machine joint of the present invention can achieve higher efficiency and more stable power supply, can effectively improve the working efficiency of the machine joint, ensure the stable operation of the machine, and has high practical value.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A more efficient power ladder power supply system for machine joints, characterized by: Three ladder circuits are used in the circuit of the machine joint, and each circuit contains a control chip. The control chips of the first-order circuit, the second-order circuit and the third-order circuit are chip U2, chip U1 and chip U3 respectively. The power supply voltage VCC-12V at the output end of the first-order circuit is used as the power supply voltage VCC-12V of the input end voltage of the second-order circuit, and the power supply voltage VCC-5V at the output end of the second-order circuit is used as the power supply voltage VCC-5V of the input end voltage of the third-order circuit.

2. A more efficient power ladder power supply system for machine joints according to claim 1, characterized in that: The first-order circuit is composed of a power supply voltage PVDD, a ground line GND, a power supply voltage VCC-12V, a chip U2, and capacitor and resistor components. The power supply voltage PVDD is connected to the left end of the diode D1, the power supply voltage PVDD is connected to the upper end of the voltage-stabilizing diode D4, the right end of the diode D1 is connected to the left end of the resistor R2, the right end of the resistor R2 is connected to pin 2 of the chip U2, pin 2 of the chip U2 is respectively connected to the left end of the resistor R3, the upper end of the resistor R5, the upper end of the capacitor C12, and the upper end of the capacitor C13, pin 4 of the chip U2 is connected to the right end of the resistor R3, pin 3 of the chip U2 is connected to the lower end of the resistor R5 and the upper end of the resistor R10, pin 7 of the chip U2 is connected to the left side of the capacitor C4, the right side of the capacitor C4 is connected to the left side of the inductor L2, pin 8 of the chip U2 is connected to the left side of the inductor L2, the right side of the inductor L2 is connected to the power supply voltage VCC-12V, the resistor R1 The left end of the chip U2 is connected to the left end of the inductor L2, the right end of the resistor R1 is connected to the left end of the capacitor C1, the right end of the capacitor C1 is connected to the right end of the inductor L2, the No. 6 pin of the chip U2 is connected to the left side of the diode D3, the right side of the diode D3 is connected to the power supply voltage VCC-12V, the No. 5 pin of the chip U2 is connected to the upper end of the capacitor C15, the lower end of the capacitor C5, the lower end of the resistor R4 and the upper end of the resistor R9, the upper end of the capacitor C5 and the upper end of the resistor R4 are connected The power supply voltage VCC-12V is connected to the upper end of the capacitor C6 and the upper end of the capacitor C7, the lower end of the capacitor C6 is connected to the upper end of the resistor R8, the lower end of the resistor R8 is connected to the ground wire GND, the lower end of the Zener diode D4, the lower end of the capacitor C12, the lower end of the capacitor C13, the lower end of the resistor R10, pin 1 of the chip U2, pin 0 of the chip U2, the lower end of the capacitor C15, the lower end of the resistor R9, and the lower end of the capacitor C7 are connected to the ground wire GND.

3. A more efficient power ladder power supply system for machine joints according to claim 1, characterized in that: The second-order circuit is composed of a power supply voltage VCC-12V, a stabilized power supply 12V0, a ​​ground wire GND, a power supply voltage VCC-5V, a stabilized power supply 5V0, a ​​control chip U1, and components such as capacitors and resistors. The left end of the power supply voltage VCC-12V is connected to the right end of the capacitor C2, and the right end of the power supply voltage VCC-12V outputs a stabilized power supply 12V0. The stabilized power supply 12V0 is connected to pin 5 of chip U1 and the left end of resistor R6. The right end of resistor R6 is connected to pin 4 of chip U1, and pin 1 of chip U1 is connected to The left end of capacitor C3 and pin 6 of chip U1 are connected to the left end of inductor L1 and the left end of diode D2, pin 3 of chip U1 is connected to the upper end of resistor R11 and the left end of resistor R7, the right end of inductor L1, the right end of resistor R7 and the upper end of capacitor C14 are connected to power supply voltage VCC-5V, the right end of power supply voltage VCC-5V outputs 5V regulated power supply 5V0, the left end of capacitor C2, pin 2 of chip U1, the lower end of resistor R11, the right end of diode D2 and the lower end of capacitor C14 are connected to ground wire GND.

4. A more efficient power ladder power supply system for machine joints according to claim 1, characterized in that: The third-order circuit is composed of components such as power supply voltage VCC-5V, ground wire GND, power supply voltage VCC-3.3V, control chip U3 and capacitors. The power supply voltage VCC-5V is connected to the upper end of capacitor C8, the upper end of capacitor C9 and pin 3 of chip U3, the power supply voltage VCC-3.3V is connected to the upper end of capacitor C10, the upper end of capacitor C11 and pin 2 of chip U3, and the lower end of capacitor C8, the lower end of capacitor C9, the lower end of capacitor C10, the lower end of capacitor C11 and pin 1 of chip U3 are connected to the ground wire GND.

Images