CN219938019U - Motor power supply circuit and movable equipment - Google Patents
Motor power supply circuit and movable equipment Download PDFInfo
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- CN219938019U CN219938019U CN202320342616.1U CN202320342616U CN219938019U CN 219938019 U CN219938019 U CN 219938019U CN 202320342616 U CN202320342616 U CN 202320342616U CN 219938019 U CN219938019 U CN 219938019U
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- 238000004146 energy storage Methods 0.000 claims abstract description 39
- 239000003990 capacitor Substances 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a motor power supply circuit and movable equipment. The first switch module is turned on in the forward direction when the first power supply is electrified and turned off in the reverse direction when the motor discharges, and the first power supply respectively supplies power to the motor and the controller through the first switch module when the first switch module is turned on. The controller is used for charging the energy storage branch after boosting the voltage of the first power supply, controlling the energy storage branch to discharge when the voltage of the energy storage module is larger than or equal to a first voltage threshold value, and outputting a first voltage signal to the second switch module based on the voltage of the energy storage branch, wherein the first voltage threshold value is larger than the voltage of the first power supply. The second switch module is turned on in response to the first voltage signal, and the equivalent resistance of the second switch module when turned on is smaller than that of the first switch module when turned on. By the mode, the risk of damaging the diode can be reduced.
Description
Technical Field
The present utility model relates to the field of electronic circuits, and in particular, to a motor power supply circuit and a mobile device.
Background
An electric machine (Electric machinery, also called a motor) refers to an electromagnetic device that converts or transmits electric energy according to the law of electromagnetic induction. The motor is divided into a motor and a generator.
In a power supply system for a motor, a diode for preventing reverse is generally required to be provided between a power supply and the motor. The anti-reverse is to prevent the motor from generating power reversely to the power supply so as to influence and even damage the power supply.
However, when the motor is rotated by a man to generate power in the reverse direction during the power supply supplying power to the motor, the voltage of the power supply and the voltage generated by the motor are both applied to the diode, and the diode is damaged at a high risk.
Disclosure of Invention
The utility model aims to provide a motor power supply circuit and movable equipment, which can reduce the risk of damaging a diode.
To achieve the above object, in a first aspect, the present utility model provides a motor power supply circuit, comprising:
the energy storage device comprises a first switch module, a second switch module, an energy storage module and a controller;
the first end of the first switch module is electrically connected with a first power supply and the first end of the second switch module respectively, the second end of the first switch module is electrically connected with the second end of the second switch module, the motor and the controller respectively, the third end of the second switch module is electrically connected with the controller, and the energy storage module is electrically connected with the controller;
the first switch module is used for being turned on in the forward direction when the first power supply is electrified and turned off in the reverse direction when the motor is discharged, wherein when the first switch module is turned on, the first power supply respectively supplies power to the motor and the controller through the first switch module;
the controller is used for charging the energy storage branch after boosting the voltage of the first power supply, controlling the energy storage branch to discharge when the voltage of the energy storage module is greater than or equal to a first voltage threshold value, and outputting a first voltage signal to the second switch module based on the voltage of the energy storage branch, wherein the first voltage threshold value is greater than the voltage of the first power supply;
the second switch module is used for responding to the first voltage signal to conduct, wherein the equivalent resistance of the second switch module when conducted is smaller than that of the first switch module when conducted, so that the first power supply supplies power to the motor through the second switch module when the second switch module is conducted.
In an alternative manner, the first switch module includes a first diode;
the anode of the first diode is electrically connected with the first power supply, and the cathode of the first diode is electrically connected with the motor.
In an alternative manner, the second switching module comprises a first switching tube;
the first end of the first switching tube is electrically connected with the driving signal output end of the controller, the second end of the first switching tube is electrically connected with the first power supply, and the third end of the first switching tube is electrically connected with the motor.
In an alternative manner, the first diode is a body diode of the first switching tube.
In an alternative, the energy storage module includes a first capacitor;
the first end of the first capacitor is electrically connected with the first charge pump output end of the controller, and the second end of the first capacitor is electrically connected with the second charge pump output end of the controller.
In an optional manner, the motor power supply circuit further comprises a voltage limiting module, a filtering module and a follow current module;
the voltage limiting module and the filtering module are electrically connected with the first power supply, and the follow current module is electrically connected with the motor;
the voltage limiting module is used for positioning a voltage clamp at the first end of the voltage limiting module at a first voltage when the voltage of the first power supply is larger than a third voltage threshold;
the filtering module is used for filtering the voltage of the first end of the voltage limiting module;
the freewheel module is used for charging when the second switch module is turned on and discharging when the second switch module is turned off so as to supply power for the motor.
In an alternative manner, the voltage limiting module comprises a first zener diode and a second zener diode;
the cathode of the first zener diode is electrically connected with the first power supply, the anode of the first zener diode is electrically connected with the anode of the second zener diode, and the cathode of the second zener diode is grounded.
In an alternative manner, the filtering module includes a second capacitor;
the first end of the second capacitor is electrically connected with the first power supply, and the second end of the second capacitor is grounded.
In an alternative manner, the freewheel module includes a third capacitance;
the first end of the third capacitor is electrically connected with the motor, and the second end of the third capacitor is grounded.
In a second aspect, the present utility model provides a mobile device comprising a wheel, a motor and a motor power circuit as described above;
the motor is connected with the wheel and used for driving the wheel to rotate so as to enable the movable equipment to move;
the motor power supply circuit is electrically connected between a first power supply and the motor, and the first power supply supplies power to the motor through the motor power supply circuit.
The beneficial effects of the utility model are as follows: the motor power supply circuit provided by the utility model comprises a first switch module, a second switch module, an energy storage module and a controller. When the first power supply is electrified, the first switch module is positively conducted, and on one hand, the first power supply supplies power to the motor through the first switch module; on the other hand, the first power supply acts on the controller through the first switch module so that the controller can boost the voltage of the first power supply and then charge the energy storage module. When the energy storage module is charged to a voltage greater than or equal to the first voltage threshold, the controller outputs a first voltage signal to the third end of the second switch module so as to conduct the second switch module. At this time, since the equivalent resistance when the second switch module is turned on is smaller than that when the first switch module is turned on, the first power supply supplies power to the motor through the second switch module. Therefore, when the first switch module includes the diode, even if the motor is turned manually to generate electricity reversely, the charge of the first power supply can be neutralized by the charge generated by the reverse electricity generation of the second switch module and the motor after the second switch module is turned on. On the one hand, the time for acting on the first switch module is shortened; on the other hand, the electric charge generated by the motor generated in the reverse direction can be neutralized, and the voltage applied to the first switch module can be reduced. Thereby, the risk of damaging the first switch module is reduced, when the first switch module comprises a diode, the risk of damaging the diode is also reduced. In addition, when the voltage of the energy storage module is greater than or equal to the first voltage threshold, the controller outputs a first voltage signal to the second switch module based on the voltage of the energy storage module, and the second switch module can be ensured to be stably conducted due to the fact that the voltage of the first voltage signal is larger.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a schematic structural diagram of a motor power supply circuit according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a motor power supply circuit according to another embodiment of the present utility model;
fig. 3 is a schematic circuit diagram of a motor power supply circuit according to an embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, fig. 1 is a schematic diagram of a motor power supply circuit 100 according to an embodiment of the utility model. As shown in fig. 1, the motor power supply circuit 100 includes a first switch module 10, a second switch module 20, an energy storage module 30, and a controller 40.
The first end of the first switch module 10 is electrically connected to the first power source V1 and the first end of the second switch module 20, the second end of the first switch module 10 is electrically connected to the second end of the second switch module 20, the motor M1 and the controller 40, the third end of the second switch module 20 is electrically connected to the controller 40, and the energy storage module 30 is electrically connected to the controller.
Specifically, the first switch module 10 is configured to be turned on in a forward direction when the first power V1 is powered on, and turned off in a reverse direction when the motor M1 is discharged. In other words, when the first end of the first switch module 10 has a power source, the first switch module 10 can be turned on in a forward direction, so that the power source (e.g., the first power source V1) at the first end of the first switch module 10 can supply power to the structure (e.g., the motor M1) electrically connected to the second end of the first switch module 10 through the first switch module 10; conversely, when the second terminal of the first switch module 10 has power, the first switch module 10 is turned off reversely, and the power (such as the power generated by the motor M1) at the second terminal of the first switch module 10 will cause the first switch module 10 to be turned off reversely. That is, the first switch module 10 has unidirectional conductivity. When the first switch module 10 is turned on, the first power source V1 supplies power to the motor M1 and the controller 40 through the first switch module 10, respectively. The controller 40 is configured to boost the voltage of the first power source V1, charge the energy storage branch 30, and control the energy storage branch 30 to discharge when the voltage of the energy storage module 30 is greater than or equal to a first voltage threshold, and output a first voltage signal to the second switch module 20 based on the voltage of the energy storage branch 30. Wherein the first voltage threshold is greater than the voltage of the first power supply V1. The second switch module 20 is configured to be turned on in response to the first voltage signal. The equivalent resistance of the second switch module 20 when turned on is smaller than that of the first switch module 10 when turned on, so that the first power V1 supplies power to the motor M1 through the second switch module 20 when the second switch module 20 is turned on. It is understood that in the embodiment of the present utility model, the motor M1 is an electric motor.
In practical application, when the first power V1 is powered on, the first switch module 10 is turned on in the forward direction. At this time, on the one hand, the first power source V1 supplies power to the motor M1 through the first switch module 10; on the other hand, the first power V1 acts on the controller 40 through the first switch module 10, so that the controller 40 boosts the voltage of the first power V1 and charges the energy storage module 30. When the voltage of the energy storage module 30 is greater than or equal to the first voltage threshold, the voltage of the corresponding energy storage branch 30 can drive the second switch module 20 to be fully turned on, and the controller outputs a first voltage signal to the third terminal of the second switch module 20 to turn on the second switch module 20. At this time, since the equivalent resistance when the second switch module 20 is turned on is smaller than that when the first switch module 10 is turned on, the first power supply V1 is switched from supplying power to the motor M1 through the first switch module 10 to supplying power to the motor M1 through the second switch module 20.
In summary, since the first switch module 10 is of unidirectional conductivity, the first switch module 10 may include a diode. When the first switch module 10 includes a diode, even if the motor M1 is turned manually to generate power in the reverse direction, the charge of the first power source V1 can be neutralized by the charge generated by the reverse direction of the second switch module 20 and the motor M1 after the second switch module 20 is turned on. Thus, although the voltage of the first power source V1 and the voltage generated by the motor M1 are simultaneously applied to the first switch module 10 when the first switch module 10 is turned on, the abnormality does not exist after the second switch module 20 is turned on, and thus, it is seen that the time for the voltage of the first power source V1 and the voltage generated by the motor M1 to be applied to the first switch module 10 is short. Compared with the scheme that the voltage of the first power supply V1 and the voltage generated by the motor M1 always act on the first switch module 10 in the related art, the risk of damaging the diode can be reduced to a greater extent. In the related art, when the motor M1 generates power, the voltage generated by the motor M1 can be equivalent to a negative voltage, which results in an increase of the voltage difference across the first switch module 10, so that the voltage equivalent to the first power V1 and the voltage generated by the motor M1 act on the first switch module 10 simultaneously.
Next, after the second switch module 20 is turned on, the electric charge of the first power source V1 can neutralize the electric charge generated by the reverse power generation of the motor M1, so as to reduce the voltage applied to the first switch module 10. Thereby, the risk of damaging the first switch module 10 is further reduced, when the first switch module 10 comprises a diode, i.e. the risk of damaging the diode is reduced.
In addition, the controller 40 outputs the first voltage signal to the second switch module 20 based on the voltage of the energy storage module 30 only when the voltage of the energy storage module 30 is greater than or equal to the first voltage threshold, and the second switch module 20 can be ensured to be stably turned on due to the greater voltage of the first voltage signal.
In an embodiment, as shown in fig. 2, the motor power supply circuit 100 further includes a voltage limiting module 50, a filtering module 60, and a freewheel module 70. The voltage limiting module 50 and the filtering module 60 are electrically connected to the first power V1, and the freewheel module 70 is electrically connected to the motor M1.
Specifically, the voltage limiting module 50 is configured to clamp the voltage at the first end of the voltage limiting module 50 at the first voltage when the voltage of the first power source is greater than the third voltage threshold, so as to prevent the motor M1 from being damaged due to excessive voltage input to the motor M1 when the first switch module 10 or the second switch module 20 is turned on.
The filtering module 70 is configured to filter the voltage at the first end of the voltage limiting module 50 to filter out high frequency interference in the first power supply V1.
The freewheel module 70 is configured to charge when the second switch module 20 is turned on and discharge when the second switch module 20 is turned off to supply power to the motor M1 to maintain the normal operation of the motor M1.
Referring to fig. 3, fig. 3 is a circuit structure of a motor power supply circuit according to an embodiment of the utility model.
In one embodiment, as shown in fig. 3, the first switch module 10 includes a first diode D1.
The anode of the first diode D1 is electrically connected to the first power source V1, and the cathode of the first diode D1 is electrically connected to the motor M1.
Specifically, when the first power V1 is powered on, the first diode D1 is turned on in the forward direction, and the first power V1 supplies power to the motor M1 through the first diode D1. When the motor M1 generates power in the reverse direction, the first diode D1 is turned off in the reverse direction, and the charge generated in the reverse direction of the motor M1 cannot pass through the first diode D1.
In one embodiment, the second switching module 20 includes a first switching tube Q1.
The first end of the first switching tube Q1 is electrically connected to the driving signal output end of the controller 40 (i.e. the 6 th pin of the controller 40), the second end of the first switching tube Q1 is electrically connected to the first power source V1, and the third end of the first switching tube Q1 is electrically connected to the motor M1.
In this embodiment, the first switching transistor Q1 is taken as an NMOS transistor as an example. The grid electrode of the NMOS tube is a first end of the first switching tube Q1, the source electrode of the NMOS tube is a second end of the first switching tube Q1, and the drain electrode of the NMOS tube is a third end of the first switching tube Q1.
In addition, the first switching transistor Q1 may be any controllable switch, such as an Insulated Gate Bipolar Transistor (IGBT) device, an Integrated Gate Commutated Thyristor (IGCT) device, a gate turn-off thyristor (GTO) device, a Silicon Controlled Rectifier (SCR) device, a junction gate field effect transistor (JFET) device, a MOS Controlled Thyristor (MCT) device, or the like.
Also, in this embodiment, the controller 40 is exemplified by a controller model LM 74610-Q1. The 1 st pin of the controller with model LM74610-Q1 is a first charge pump output end, the 7 th pin is a second charge pump output end, and the first charge pump output end and the second charge pump output end are used for outputting charge pump voltage so as to charge the energy storage branch 30. The charge pump (charge pump) is a dc-dc converter, and uses a capacitor as an energy storage element to generate an output voltage greater than an input voltage (in the embodiment of the present utility model, the voltage of the first power V1). The 6 th pin is a driving signal output end. The driving signal output end is used for outputting a first voltage signal for driving the first switching tube Q1.
Meanwhile, in this embodiment, the first diode D1 is taken as an example of a body diode of the first switching transistor Q1. In other embodiments, the first diode D1 and the first switching tube Q1 may be two devices, which is not limited in the embodiment of the utility model.
In one embodiment, the energy storage branch 30 includes a first capacitor C1.
The first end of the first capacitor C1 is electrically connected to the first charge pump output terminal of the controller 40, and the second end of the first capacitor C1 is electrically connected to the second charge pump output terminal of the controller 40.
In one embodiment, the voltage limiting module 50 includes a first zener diode DW1 and a second zener diode DW2.
The cathode of the first zener diode DW1 is electrically connected to the first power source V1, the anode of the first zener diode DW1 is electrically connected to the anode of the second zener diode DW2, and the cathode of the second zener diode DW2 is grounded GND.
Specifically, when the voltage of the first power supply V1 is greater than the sum of the reverse breakdown voltage of the first zener diode DW1 and the forward conduction voltage of the second zener diode DW2, the first zener diode DW1 is reverse-broken down to clamp the voltage of the first end of the voltage limiting module 50 at the sum of the reverse breakdown voltage of the first zener diode DW1 and the forward conduction voltage of the second zener diode DW2, which corresponds to the first voltage in the above embodiment.
In one embodiment, the filtering module 60 includes a second capacitor C2.
The first end of the second capacitor C2 is electrically connected to the first power V1, and the second end of the second capacitor C2 is grounded GND. The high-frequency interference can be filtered by utilizing the characteristic that the second capacitor C2 is connected with alternating current and direct current.
In one embodiment, the freewheel module 70 includes a third capacitor C3.
The first end of the third capacitor C3 is electrically connected to the motor M1, and the second end of the third capacitor C3 is grounded to GND.
Specifically, when the first switching transistor Q1 is turned on, the third capacitor C3 is charged. When the first switching tube Q1 is turned off, since the forward conduction voltage drop of the first diode D1 is greater than the conduction voltage drop of the first switching tube Q1, the voltage for supplying power to the motor M1 at this time is reduced, and the electric energy stored in the third capacitor C3 supplies power to the motor M1, so as to maintain the normal operation of the motor M1.
The operation principle of the circuit configuration shown in fig. 3 is explained below.
When the first power V1 is powered on, the first diode D1 is turned on forward, and the first power V1 supplies power to the motor M1 and the controller 40 through the first diode D1. The controller 40 charges the first capacitor C1 through the first charge pump output terminal and the second charge pump output terminal. When the first capacitor C1 is charged to a voltage greater than or equal to the first voltage threshold, the controller 40 stops charging the first capacitor C1. The first capacitor C1 starts to discharge, and the controller 40 outputs a first voltage signal to the first switching tube Q1 based on the voltage at which the first capacitor C1 discharges, so as to turn on the first switching tube Q1. The first power supply V1 supplies power to the motor M1 through the first switching tube Q1. At this time, if the motor M1 reversely generates power due to the artificial rotation, the charge generated by the motor M1 reversely is neutralized by the charge of the first power V1, so as to reduce the voltage applied to the first diode D1 subsequently, thereby reducing the risk of damaging the first diode D1.
Then, when the voltage of the first capacitor C1 is discharged to be less than or equal to the second voltage threshold, the controller 40 stops driving the first switching tube Q1, and the first switching tube Q1 is turned off. The first power source V1 supplies power to the motor M1 and the controller 40 through the first diode D1, respectively. The controller 40 again charges the first capacitor C1.
The above process is repeated continuously, so that the time for simultaneously acting the voltage of the first power supply V1 and the voltage generated by the motor M1 on the first diode D1 is shortened in the running process of the driving motor M1, and the electric charge generated by the motor M1 can be neutralized based on the electric charge of the first power supply V1, so that the voltage acting on the first diode D1 is reduced, and the damage risk of the first diode D1 can be effectively reduced. In addition, since the equivalent resistance of the first switching tube Q1 when turned on is smaller than the resistance of the first diode D1 when turned on, the power consumption of the first switching tube Q1 when turned on is smaller than the power consumption of the first diode D1 when turned on, and compared with the scheme in the related art that the voltage of the first power supply V1 and the voltage generated by the motor M1 act on the first diode D1 simultaneously, the embodiment of the utility model can also achieve the purpose of saving the power consumption.
The embodiment of the utility model also provides the movable equipment. The mobile device includes wheels, a motor, and a motor power circuit 100 in any of the embodiments of the present utility model.
Wherein, the motor is connected with the wheel, and the motor is used for driving the wheel to rotate to drive movable equipment to remove. The motor power supply circuit is electrically connected between the first power supply and the motor, and the first power supply supplies power to the motor through the motor power supply circuit.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order, and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. A motor power supply circuit, comprising:
the energy storage device comprises a first switch module, a second switch module, an energy storage module and a controller;
the first end of the first switch module is electrically connected with a first power supply and the first end of the second switch module respectively, the second end of the first switch module is electrically connected with the second end of the second switch module, the motor and the controller respectively, the third end of the second switch module is electrically connected with the controller, and the energy storage module is electrically connected with the controller;
the first switch module is used for being turned on in the forward direction when the first power supply is electrified and turned off in the reverse direction when the motor is discharged, wherein when the first switch module is turned on, the first power supply respectively supplies power to the motor and the controller through the first switch module;
the controller is used for charging the energy storage module after boosting the voltage of the first power supply, controlling the energy storage module to discharge when the voltage of the energy storage module is greater than or equal to a first voltage threshold value, and outputting a first voltage signal to the second switch module based on the voltage of the energy storage module, wherein the first voltage threshold value is greater than the voltage of the first power supply;
the second switch module is used for responding to the first voltage signal to conduct, wherein the equivalent resistance of the second switch module when conducted is smaller than that of the first switch module when conducted, so that the first power supply supplies power to the motor through the second switch module when the second switch module is conducted.
2. The motor power supply circuit of claim 1, wherein the first switch module comprises a first diode;
the anode of the first diode is electrically connected with the first power supply, and the cathode of the first diode is electrically connected with the motor.
3. The motor power supply circuit of claim 2, wherein the second switching module comprises a first switching tube;
the first end of the first switching tube is electrically connected with the driving signal output end of the controller, the second end of the first switching tube is electrically connected with the first power supply, and the third end of the first switching tube is electrically connected with the motor.
4. A motor power circuit according to claim 3, wherein the first diode is a body diode of the first switching tube.
5. The motor power circuit of claim 1, wherein the energy storage module comprises a first capacitor;
the first end of the first capacitor is electrically connected with the first charge pump output end of the controller, and the second end of the first capacitor is electrically connected with the second charge pump output end of the controller.
6. The motor power supply circuit of claim 1, further comprising a voltage limiting module, a filtering module, and a freewheel module;
the voltage limiting module and the filtering module are electrically connected with the first power supply, and the follow current module is electrically connected with the motor;
the voltage limiting module is used for positioning a voltage clamp at the first end of the voltage limiting module at a first voltage when the voltage of the first power supply is larger than a third voltage threshold;
the filtering module is used for filtering the voltage of the first end of the voltage limiting module;
the freewheel module is used for charging when the second switch module is turned on and discharging when the second switch module is turned off so as to supply power for the motor.
7. The motor power supply circuit of claim 6, wherein the voltage limiting module comprises a first zener diode and a second zener diode;
the cathode of the first zener diode is electrically connected with the first power supply, the anode of the first zener diode is electrically connected with the anode of the second zener diode, and the cathode of the second zener diode is grounded.
8. The motor power supply circuit of claim 6, wherein the filter module comprises a second capacitor;
the first end of the second capacitor is electrically connected with the first power supply, and the second end of the second capacitor is grounded.
9. The motor power supply circuit of claim 6, wherein the freewheel module includes a third capacitor;
the first end of the third capacitor is electrically connected with the motor, and the second end of the third capacitor is grounded.
10. A mobile device comprising a wheel, a motor and a motor power circuit as claimed in any one of claims 1 to 9;
the motor is connected with the wheel and used for driving the wheel to rotate so as to enable the movable equipment to move;
the motor power supply circuit is electrically connected between a first power supply and the motor, and the first power supply supplies power to the motor through the motor power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320342616.1U CN219938019U (en) | 2023-02-21 | 2023-02-21 | Motor power supply circuit and movable equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320342616.1U CN219938019U (en) | 2023-02-21 | 2023-02-21 | Motor power supply circuit and movable equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219938019U true CN219938019U (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320342616.1U Active CN219938019U (en) | 2023-02-21 | 2023-02-21 | Motor power supply circuit and movable equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219938019U (en) |
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2023
- 2023-02-21 CN CN202320342616.1U patent/CN219938019U/en active Active
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