Search

CN-122026555-A - Motor auxiliary circuit, circuit board and strength training apparatus

CN122026555ACN 122026555 ACN122026555 ACN 122026555ACN-122026555-A

Abstract

The embodiment of the application discloses a motor auxiliary circuit, a circuit board and a strength training apparatus. The energy storage sub-circuit, the charge control sub-circuit and the discharge control sub-circuit are arranged corresponding to the motor, the charge control sub-circuit is controlled to charge the energy storage sub-circuit according to the corresponding electric energy flowing characteristics of the motor under different running states, or the electric energy stored by the energy storage sub-circuit is controlled to supply power to the motor through the discharge control sub-circuit, a heat dissipation device and a corresponding installation mode are not required to be designed, the production cost of the strength training instrument using the digital resistance box is effectively controlled, and the electric energy consumed originally through the heat dissipation device is recycled through the energy storage sub-circuit, so that the energy utilization rate is also improved.

Inventors

  • XU YUEHUA

Assignees

  • 广州雷辰机电技术有限公司

Dates

Publication Date
20260512
Application Date
20241105

Claims (11)

  1. 1. The motor auxiliary circuit is characterized by comprising an energy storage sub-circuit, a charging control sub-circuit and a discharging control sub-circuit; The charging input end of the charging control sub-circuit is used for being connected with the power supply connection end of the motor driving circuit, and the charging output end of the charging control sub-circuit is connected with the first end of the energy storage sub-circuit; The discharging input end of the discharging control sub-circuit is connected with the second end of the energy storage sub-circuit, and the discharging output end of the discharging control circuit is used for being connected with the power supply connecting end of the motor driving circuit; When the running state of the motor is in a power generation state, the charging input end is conducted with the charging output end, the discharging input end and the discharging output end are disconnected, so that the power generation of the motor charges the energy storage sub-circuit, and when the running state of the motor is in a work working state, the discharging input end and the discharging output end are conducted, and the charging input end and the charging output end are disconnected, so that the energy storage sub-circuit supplies power to the motor.
  2. 2. The motor assist circuit of claim 1 wherein the charge control sub-circuit comprises a first MOS tube, a first resistor and a second resistor, wherein a first end of the first resistor is used as a charge control end to receive a control signal for controlling the charge input end and the charge output end to be turned on or off, a second end of the first resistor is connected with a grid electrode of the first MOS tube and a first end of the second resistor, a second end of the second resistor is grounded, a drain electrode of the first MOS tube is used as the charge input end, and a source electrode of the first MOS tube is used as the charge output end.
  3. 3. The motor assist circuit as recited in claim 2 wherein the charge sub-control circuit further comprises a first diode, a drain of the first MOS transistor being connected to a cathode of the first diode, an anode of the first diode being adapted to be connected to the power connection terminal.
  4. 4. The motor assist circuit of claim 1 wherein the tank sub-circuit comprises a first inductor and a first capacitor, a first end of the first inductor being a first end of the tank sub-circuit, a second end of the first inductor being connected to the first end of the first capacitor as a second end of the tank sub-circuit, a second end of the first capacitor being grounded.
  5. 5. The motor assist circuit of claim 4 wherein the tank subcircuit further comprises a second diode having a negative pole connected to a first terminal of the first inductor and a positive pole connected to a second terminal of the first inductor.
  6. 6. The motor auxiliary circuit according to any one of claims 1-5, wherein the discharge control sub-circuit comprises a second MOS transistor, a third resistor and a fourth resistor, a first end of the third resistor is used as a discharge control end to receive a control signal for controlling the discharge input end and the discharge output end to be turned on or off, a second end of the third resistor is connected to a gate of the second MOS transistor and a first end of the fourth resistor, a second end of the fourth resistor is grounded, a drain electrode of the second MOS transistor is used as the discharge input end, and a source electrode of the second MOS transistor is used as the discharge output end.
  7. 7. The motor assist circuit as recited in claim 6 wherein the discharge control subcircuit includes a third diode, the drain of the second MOS transistor being connected to the anode of the third diode, the cathode of the third diode being adapted to be connected to the power connection terminal.
  8. 8. Motor auxiliary circuit according to any of claims 1-5, characterized in that the motor operating state is confirmed by means of a current sampling signal and/or an encoder signal.
  9. 9. A circuit board comprising a microprocessor and the motor auxiliary circuit of any one of claims 1-8; The first control end of the microprocessor is connected with the charging control end of the charging control sub-circuit so as to send control signals for conducting the charging input end and the charging output end to the charging control end when the running state of the motor is a power generation state, and send control signals for disconnecting the charging input end and the charging output end to the charging control end when the running state of the motor is a work state, and the second control end of the microprocessor is connected with the discharging control end of the discharging control sub-circuit so as to send control signals for disconnecting the discharging input end and the discharging output end to the discharging control end when the running state of the motor is a power generation state, and send control signals for conducting the discharging input end and the discharging output end to the discharging control end when the running state of the motor is a work state.
  10. 10. The circuit board of claim 9, wherein the control signal is configured to generate a high level corresponding to the charge control terminal and the discharge control terminal through the corresponding bootstrap boost circuit when the control signal is used to control the turn-on.
  11. 11. A strength training apparatus comprising a motor, a motor drive circuit and a motor assist circuit as claimed in any one of claims 1 to 8.

Description

Motor auxiliary circuit, circuit board and strength training apparatus Technical Field The embodiment of the application relates to the technical field of electric motor, in particular to a motor auxiliary circuit, a circuit board and a strength training instrument. Background Along with the continuous development of sports science and the continuous improvement of people's economic level, various digital resistance boxes capable of enriching the strength training process and improving the strength training effect appear. The digital resistance box mainly refers to a physical counterweight connected to a traction rope in a traditional strength training instrument through a motor connected to the traction rope, provides resistance for strength training, and changes the running state of the motor into a strength training instrument component with the resistance provided by the strength training, so that the digital resistance box is applied to the strength training instrument in specific use. The content of the strength training process can be enriched by controlling the resistance provided by the running state of the motor, and more accurate exercise quantity statistics can be provided for the training process. The inventor researches the whole operation process of the motor in the existing digital resistance box, and discovers that in order to meet the heat dissipation requirement when the motor heats in the operation process, a heat dissipation device and a mounting structure are designed in a targeted manner, and the strength training apparatus using the digital resistance box has higher production cost and lower energy utilization rate. Disclosure of Invention The invention provides a motor auxiliary circuit, a circuit board and a strength training instrument, which are used for solving the technical problems that the production cost of the strength training instrument using a digital resistance box is high and the energy utilization rate is low due to the design of a heat radiating device and a mounting structure of the existing digital resistance box. In a first aspect, an embodiment of the present application provides a motor auxiliary circuit, including an energy storage sub-circuit, a charge control sub-circuit, and a discharge control sub-circuit; The charging input end of the charging control sub-circuit is used for being connected with the power supply connection end of the motor driving circuit, and the charging output end of the charging control sub-circuit is connected with the first end of the energy storage sub-circuit; the discharging input end of the discharging control sub-circuit is connected with the second end of the energy storage sub-circuit, and the discharging output end of the discharging control circuit is used for being connected with the power supply connecting end of the motor driving circuit; When the running state of the motor is in a power generation state, the charging input end is connected with the charging output end, the discharging input end and the discharging output end are disconnected, so that the power generation of the motor charges the energy storage sub-circuit, and when the running state of the motor is in a power generation state, the discharging input end and the discharging output end are connected, and the charging input end and the charging output end are disconnected, so that the energy storage sub-circuit supplies power to the motor. Above-mentioned, set up energy storage sub-circuit, charge control sub-circuit and discharge control sub-circuit corresponding to the motor, according to the electric energy flow characteristics that the motor corresponds under different running conditions, control is charged to the energy storage sub-circuit through charge control sub-circuit, or control is supplied power to the motor through the electric energy that discharge control sub-circuit stored the energy storage sub-circuit, need not to design radiator and corresponding mounting means, the manufacturing cost of the strength training apparatus of using digital resistance case obtains effective control, will be originally through the electric energy recovery use of radiator consumption, also improved energy utilization ratio. The charging control sub-circuit comprises a first MOS tube, a first resistor and a second resistor, wherein the first end of the first resistor is used as a charging control end to receive a control signal for controlling the on or off of a charging input end and a charging output end, the second end of the first resistor is connected with the grid electrode of the first MOS tube and the first end of the second resistor, the second end of the second resistor is grounded, the drain electrode of the first MOS tube is used as the charging input end, and the source electrode of the first MOS tube is used as the charging output end. Above-mentioned, through the control to MOS pipe state, realize carrying out accurate control to the charging proce