Power management circuit, circuit board and sports equipment

Abstract

The utility model discloses a power management circuit, a circuit board and sports equipment, and relates to the technical field of sports equipment, and the power management circuit comprises a power generation assembly access end, a battery module access end and a voltage management circuit. The power generation assembly access end is used for receiving motor electric energy output by the three-phase power generation assembly; the battery module access end is connected with the battery module and is used for accessing battery electric energy output by the battery module; the input end of the voltage management circuit is connected with the power generation assembly access end and the battery module access end, and the output end of the voltage management circuit is used for being connected with a load. The voltage management circuit is used for performing voltage transformation and voltage stabilization on the electric energy of the motor and then outputting the electric energy to a load when the electric energy of the motor is received; and the voltage management circuit is also used for carrying out voltage transformation work on the battery electric energy and then outputting the battery electric energy to the load when the motor electric energy is not received. The power supply management circuit provided by the utility model aims to improve the condition that the output current of sports equipment is unstable, so that the power supply of electronic equipment is unstable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field, especially relate to a power management circuit, circuit board and sports equipment. BACKGROUND

[0002] People overcome the resistance of sports equipment to do work, thereby obtaining fitness effect.

[0003] The prior art adopts the three-phase power generation assembly in the sports equipment to supply power for other electronic devices on the sports equipment, but sometimes the current output by the sports equipment is unstable, leading to unstable power supply of the electronic devices. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a power management circuit, circuit board and sports equipment, aiming at improving the situation that the current output by the sports equipment is unstable, leading to unstable power supply of the electronic devices.

[0005] To achieve the above-mentioned purpose, the power management circuit provided by the utility model is applied to sports equipment, and the sports equipment includes a battery module, a three-phase power generation assembly, a rotating member and a rectifier module; the rotating member is drivingly connected with the three-phase power generation assembly, and the rotating member drives the three-phase power generation assembly to output motor power when rotating; the input end of the rectifier module is connected with the output end of the three-phase power generation assembly; the power management circuit comprises:

[0006] A power generation assembly access end is connected with the output end of the rectifier module and used for receiving the rectified motor power;

[0007] A battery module access end is connected with the battery module and used for accessing the battery power output by the battery module;

[0008] A voltage management circuit has an input end connected with the power generation assembly access end and the battery module access end respectively, and an output end used for connecting a load; the voltage management circuit is used for outputting the motor power to the load after voltage transformation and voltage stabilization when receiving the motor power; the voltage management circuit is also used for outputting the battery power to the load after voltage transformation when not receiving the motor power.

[0009] In an embodiment, the voltage management circuit comprises:

[0010] A first voltage management module is connected with the power generation assembly access end and used for outputting the motor power received from the power generation assembly access end to the load after voltage transformation and voltage stabilization;

[0011] a second voltage management module connected with the output end of the first voltage management module, the second voltage management module being configured to receive the voltage output by the first voltage management module and output the voltage received from the first voltage management module to a load after voltage transformation and / or voltage stabilization.

[0012] In an embodiment, the first voltage management module is also connected with the battery module access end, and the first voltage management module is further configured to output the battery voltage output by the battery module to the second voltage management module and the load after voltage transformation and voltage stabilization when no motor power is received.

[0013] In an embodiment, the first voltage management module comprises a first management chip, a first capacitor to a tenth capacitor, a first inductor, a first resistor, a second resistor, a first diode, a second diode, and a third diode.

[0014] The first interface of the first management chip is connected with the first end of the first capacitor, the eighth interface of the first management chip is connected with the second end of the first capacitor, the cathode of the first diode, and the first end of the first inductor, the anode of the first diode is grounded, the second end of the first inductor is connected with the first end of the first resistor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, and the sixth capacitor, the first end of the sixth capacitor is configured to connect a load and the second voltage management module, the second end of the first resistor is connected with the fourth interface of the first management chip and the first end of the second resistor, and the second end of the second resistor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, and the sixth capacitor is grounded.

[0015] The seventh port of the first management chip is connected with the first end of the seventh capacitor, the first end of the eighth capacitor, the first end of the ninth capacitor, the first end of the tenth capacitor, the cathode of the second diode, and the cathode of the third diode, the second end of the seventh capacitor, the eighth capacitor, the ninth capacitor, and the tenth capacitor is connected with the sixth interface of the first management chip, the EPAD interface of the first management chip, and a ground end, the anode of the second diode is connected with the power generation assembly access end, and the anode of the third diode is connected with the battery module access end.

[0016] In an embodiment, the second voltage management module comprises a second management chip, an eleventh capacitor to a fifteenth capacitor, a first indication component, and a third resistor.

[0017] The second interface and the fourth interface of the second management chip are connected with the first end of the eleventh capacitor, the first end of the twelfth capacitor, the first end of the thirteenth capacitor, the first end of the first indicating component, and are used for connecting a load; the second end of the first indicating component is grounded through the third resistor, and the second ends of the eleventh capacitor, the twelfth capacitor and the thirteenth capacitor are connected with the first interface of the second management chip, the second end of the fourteenth capacitor, the second end of the fifteenth capacitor and the ground end, and the first ends of the fourteenth capacitor and the fifteenth capacitor are connected with the output end of the first voltage management module and the third interface of the second management chip.

[0018] In an embodiment, the power management circuit further comprises a battery charging circuit, an input end of the battery charging circuit is connected with an output end of the rectifier module, and an output end of the battery charging circuit is connected with the battery module.

[0019] In an embodiment, the battery charging circuit comprises:

[0020] a first current detection circuit, which is connected with the output end of the rectifier module and is used for outputting a corresponding current detection signal according to the motor electric energy;

[0021] a first switch circuit, which is connected in series with a path between the rectifier module and the power generation component access end;

[0022] a first main control circuit, which is connected with the output end of the first current detection circuit and the controlled end of the first switch circuit respectively, and is used for controlling the first switch circuit to be disconnected when the corresponding current of the motor electric energy is not in a set current range according to the current detection signal.

[0023] In an embodiment, the battery charging circuit further comprises:

[0024] a second current detection circuit, which is connected with the output end of the rectifier module and is used for outputting a corresponding current detection signal according to the motor electric energy;

[0025] a second main control circuit, which is connected with the output end of the second current detection circuit, and is used for controlling the battery charging circuit to stop working when the corresponding current of the motor electric energy is not in a set current range according to the current detection signal.

[0026] The utility model further provides a circuit board, comprising the power management circuit of any one of the above.

[0027] The utility model also provides a kind of sports equipment, the sports equipment includes battery module, three-phase power generation component, rotating member and rectifier module;The rotating member is driven connection with the three-phase power generation component, the rotating member drives the three-phase power generation component output motor electric energy when rotating, the input end of the rectifier module is connected with the output end of the three-phase power generation component, and the rectifier module is used to rectify output for the motor electric energy;

[0028] The sports equipment further includes a circuit board as described above.

[0029] As described above, since the three-phase power generation component in the sports equipment depends on the user's exercise intensity, there may be unstable power generation, resulting in unstable power output from the three-phase power generation component to the load, affecting the performance of the load and the user's experience. Therefore, the power management circuit in the utility model can perform voltage transformation on the motor electric energy output by the three-phase power generation component to adapt to different complexities, and at the same time, perform voltage stabilization on the motor electric energy to make the motor electric energy have certain stability when supplying power to the load. On the other hand, when the kinetic energy generated by the user when feeling tired cannot make the three-phase power generation component output motor electric energy, the voltage management circuit can also take power through the battery module access end to supply power to the load. In this way, it can improve the unstable output current of the sports equipment, which leads to unstable power supply of electronic devices. BRIEF DESCRIPTION OF DRAWINGS

[0030] To more clearly illustrate the technical solutions of the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings from the structures shown in the drawings without creative labor.

[0031] Figure 1 A schematic diagram of an embodiment of the power management circuit provided by the utility model;

[0032] Figure 2 A circuit diagram of an embodiment of the first voltage management module provided by the utility model;

[0033] Figure 3 A circuit diagram of an embodiment of the second voltage management module provided by the utility model;

[0034] Figure 4 A schematic diagram of an embodiment of the battery charging circuit provided by the utility model;

[0035] Figure 5 A schematic diagram of another embodiment of the battery charging circuit provided by the utility model.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 10, battery module; 20, three-phase power generation assembly; 40, rectification module;

[0038] 1000, power management circuit; 100, power generation assembly access end; 200, battery module access end; 300, voltage management circuit; 310, first voltage management module; 320, second voltage management module; 400, battery charging circuit; 410, first current detection circuit; 420, first switch circuit; 430, first master control circuit; 440, second current detection circuit; 450, second master control circuit;

[0039] C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor; C7, seventh capacitor; C8, eighth capacitor; C9, ninth capacitor; C10, tenth capacitor; C11, eleventh capacitor; C12, twelfth capacitor; C13, thirteenth capacitor; C14, fourteenth capacitor; C15, fifteenth capacitor; U1, first management chip; U2, second management chip; L1, first inductor; D1, first diode; D2, second diode; D3, third diode; D4, first indication assembly; R1, first resistor; R2, second resistor; R3, third resistor.

[0040] The purposes, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0042] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears in the whole text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0044] People work by overcoming the resistance of exercise equipment to obtain fitness effects. Through exercise equipment, people not only enhance muscle strength and endurance, but also improve heart and lung function and promote overall health.

[0045] Currently, some exercise equipment is equipped with components that can convert mechanical energy into electrical energy, such as three-phase power generation components such as generators. In this way, while the user exercises, these three-phase power generation components can convert part of the kinetic energy into electrical energy and be used to power the display screen, timer or other electronic components on the device. However, one challenge faced by this technology is that due to the speed and force changes during exercise, the output current is unstable, which may affect the functionality of electronic devices that rely on stable power supply. This requires additional measures in design and technology to ensure the stability of power supply.

[0046] It should be noted that the three-phase power generation component includes an excitation component and a rotating component; the excitation component is used to provide a magnetic field, which can be a permanent magnet or an electromagnet. The rotating component can be rotated by the user of the exercise equipment, and the rotating component cuts the magnetic force line in the magnetic field to generate an induced electromotive force. The rotating component can be made of metal. The three-phase power generation component can be a generator, wherein the rotating component is a motor rotor. The exercise equipment can be a spin bike, and the spin bike pedal is connected to the rotating component through a mechanical structure. The user pedals the pedal to drive the rotating component to rotate, thereby driving the three-phase power generation component to output motor power; the motor power includes current and voltage. The voltage is the induced electromotive force. The three-phase power generation component can be a direct current generator or an alternating current generator; correspondingly, the motor power can be alternating current or direct current.

[0047] The utility model provides a power management circuit 1000, the power management circuit 1000 is applied to sports equipment, the sports equipment includes battery module 10, three -phase power generation subassembly 20, rotating part and rectifier module 40, the rotating part with three -phase power generation subassembly 20 drive connection, the rotating part drives three -phase power generation subassembly 20 output motor electric energy when rotating, the input of rectifier module 40 is connected with the output of three -phase power generation subassembly 20.

[0048] It can be understood that the rotating part is the core mechanical part of the sports equipment, such as the roller of a treadmill, the flywheel of a spinning bike, etc. When the user uses the equipment, the rotating part is rotated by physical movement (such as running or pedaling). When the rotating part rotates, the three-phase power generation subassembly 20 is driven to work, and the generator can convert mechanical energy into electrical energy and output in the form of three-phase alternating current. The so-called "motor electric energy" refers to the initial electric energy generated by the three-phase power generation subassembly 20 after the rotating part is driven by the user's movement. Since the three-phase power generation subassembly 20 outputs alternating current, many electronic devices need direct current for power supply, so the rectifier module 40 is needed to convert three-phase alternating current into direct current. The input end of the rectifier module 40 is directly connected to the output end of the three-phase power generation subassembly 20, receives alternating current from the three-phase power generation subassembly 20 and converts it.

[0049] In an embodiment, as shown in Figure 1 The power management circuit 1000 includes a power generation subassembly access end 100, a battery module 10 access end, and a voltage management circuit 300. The power generation subassembly access end 100 is connected to the output end of the rectifier module 40 for receiving the rectified motor electric energy. The battery module 10 access end is connected to the battery module 10 for accessing the battery electric energy output by the battery module 10. The input end of the voltage management circuit 300 is connected to the power generation subassembly access end 100 and the battery module 10 access end, respectively. The output end of the voltage management circuit 300 is used to connect to the load. When the voltage management circuit 300 receives the motor electric energy, it performs voltage transformation and voltage stabilization work and then outputs to the load. When the voltage management circuit 300 does not receive the motor electric energy, it performs voltage transformation work on the battery electric energy and then outputs to the load.

[0050] In this embodiment, the power generation assembly access end 100 is made of conductive material, such as iron, copper or conductive ceramic, etc. The battery module 10 access end is used to access the battery module 10, and is made of conductive material, such as metal or conductive ceramic, etc. The battery module 10 can be a lead-acid battery, a nickel-cadmium battery, a nickel-hydrogen battery or a lithium-ion battery module 10. It should be noted that the voltage of the motor power is positively correlated with the speed of the rotating assembly cutting the magnetic lines of force in the magnetic field. That is, the voltage of the first electric signal is positively correlated with the speed at which the user drives the rotating member to rotate, and the speed at which the user drives the rotating member to rotate is determined by the user and cannot be determined in advance by the exercise equipment. That is, the voltage of the first electric signal is uncertain.

[0051] In this embodiment, the power generation assembly access end 100 is directly connected to the output end of the rectifier module 40 to receive the motor power that has been rectified (i.e., converted from three-phase alternating current to direct current). That is, when the user is using the exercise equipment, the rotating member drives the three-phase power generation assembly 20 to generate motor power, and the motor power is converted by the rectifier module 40 into direct current form that is easier to manage and use.

[0052] In this embodiment, the battery module 10 access end is connected to the battery module 10 to allow the battery module 10 to supply power to the system. That is, the battery module 10 here plays the role of a backup power source, ensuring that the system can continue to provide stable power support even without instant generated power (e.g., when the user is not using the equipment or the power generation is insufficient to meet the demand).

[0053] In this embodiment, the voltage management circuit 300 is connected to the power generation assembly access end 100 and the battery module 10 access end, and is used to appropriately process and distribute the motor power and the battery power under different conditions. When there is a first power input, the voltage management circuit 300 will perform voltage conversion and stabilization processing on the direct current to adapt to the needs of the load and ensure that the power output to the load can be adapted to the load while providing stable power supply. In the absence of a first power input (such as when the user is not using the equipment), the voltage management circuit 300 will automatically switch to a battery power supply mode, convert the battery power and output it to the load to ensure continuous operation of the system. In this way, the voltage management circuit 300 effectively solves the problem caused by unstable energy input during exercise and ensures continuous and stable power supply to electronic devices.

[0054] In summary, since the three-phase power generation assembly 20 in the sports equipment depends on the intensity of the user's movement, there may be unstable power generation, resulting in unstable power output from the three-phase power generation assembly 20 to the load, affecting the performance of the load and the user's experience. Therefore, the power management circuit 1000 in the utility model can perform voltage conversion work on the motor power output by the three-phase power generation assembly 20 to adapt to different complexities; at the same time, the motor power is stabilized to make the motor power have a certain stability when supplying power to the load. On the other hand, in order to make the kinetic energy generated by the user when feeling tired unable to output motor power from the three-phase power generation assembly 20, the voltage management circuit 300 can also take power from the battery module 10 connected to the input end to supply power to the load. In this way, it can improve the unstable output current of the sports equipment, which leads to unstable power supply of electronic equipment.

[0055] In an embodiment, as shown in Figure 1 The voltage management circuit 300 includes a first voltage management module 310 and a second voltage management module 320: the first voltage management module 310 is connected with the power generation assembly input end 100, and the first voltage management module 310 is used to perform voltage conversion and voltage stabilization work on the motor power received from the power generation assembly input end 100 and then output to the load; the second voltage management module 320 is connected with the output end of the first voltage management module 310, and the second voltage management module 320 is used to receive the voltage output by the first voltage management module 310 and perform voltage conversion and / or voltage stabilization work on the power received from the first voltage management module 310 and then output to the load.

[0056] In a feasible implementation, the first voltage management module 310 is used to step down the motor power received from the power generation assembly input end 100 to a 5V working voltage, which can supply power to the display; then, the second voltage management module 320 receives the 5V working voltage and performs further step-down work to output a 3.3V working voltage for power supply to other loads. Subsequently or 5V and 3.3V will be taken as examples for description, which does not mean that the first voltage management module 310 and the second voltage management module 320 are only used to convert the motor voltage to 5V and 3.3V.

[0057] It can be understood that the first voltage management module 310 will step down the motor power received from the power generation assembly access end 100 to 5V, and the second voltage management module 320 will further step it down to 3.3V. This way of hierarchical voltage conversion can more accurately match the needs of different loads, avoiding the problem of energy waste that may exist when a single voltage output. For example, some devices (such as displays) require 5V operating voltage, while other low-power devices may only require 3.3V voltage. In this way, both high-voltage and low-voltage devices can obtain the required power through appropriate voltage conversion, thereby increasing the application range and flexibility of the system.

[0058] In another aspect, the first voltage management module 310 and the second voltage management module 320 can each undertake part of the voltage stabilization task, forming a dual voltage stabilization mechanism. Even if one module fails or performance declines, the other module can still maintain the stability of the voltage to a certain extent, reducing the risk of system failure due to a single point of failure and improving the overall reliability of the system.

[0059] It needs to be explained that the voltage management circuit 300 can have more than two voltage management modules. When more different voltage values of operating voltage are needed, multiple voltage management modules can be added to obtain more segments of stabilized voltage output.

[0060] In an embodiment, as shown in Figure 1 The first voltage management module 310 is also connected to the battery module 10 access end, and the first voltage management module 310 is also used to output the battery power output by the battery module 10 after voltage conversion and voltage stabilization to the second voltage management module 320 and the load when no motor power is received.

[0061] It can be understood that if the user stops moving or the three-phase power generation assembly 20 fails to generate sufficient power, the first voltage management module 310 will automatically switch to battery power mode. At this time, it receives battery power from the battery module 10 access end and performs similar voltage conversion and voltage stabilization processing. The processed power can also be 5V or other required voltage levels, and then transmitted to the second voltage management module 320 or directly supplied to the load.

[0062] Since the first voltage management module 310 can process power from the three-phase power generation assembly 20 and the battery module 10 at the same time and has an automatic switching function, even in the case of user stopping moving or three-phase power generation assembly 20 failure, the system can still provide stable power output, ensuring the normal operation of the load device (such as display, timer, etc.). Through this seamless switching mechanism, the downtime of the device caused by power interruption is reduced, and the user experience is improved.

[0063] In an embodiment, as shown inFigure 2 As shown, the first voltage management module 310 includes a first management chip U1, first to tenth capacitors C1-C10, a first inductor L1, a first resistor R1, a second resistor R2, a first diode D1, a second diode D2, and a third diode D3. The first interface of the first management chip U1 is connected to the first terminal of the first capacitor C1, the eighth interface of the first management chip U1 is connected to the second terminal of the first capacitor C1, the cathode of the first diode D1, and the first terminal of the first inductor L1, the anode of the first diode D1 is grounded, the second terminal of the first inductor L1 is connected to the first terminal of the first resistor R1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, and the sixth capacitor C6, the first terminal of the sixth capacitor C6 is used to connect a load and the second voltage management module 320, the second terminal of the first resistor R1 is connected to the fourth interface of the first management chip U1 and the first terminal of the second resistor R2, the second terminals of the second resistor R2, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, and the sixth capacitor C6 are grounded, the seventh terminal of the first management chip U1 is connected to the first terminal of the seventh capacitor C7, the first terminal of the eighth capacitor C8, the first terminal of the ninth capacitor C9, the first terminal of the tenth capacitor C10, the cathode of the second diode D2, and the cathode of the third diode D3, the second terminals of the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, and the tenth capacitor C10 are connected to the sixth interface of the first management chip U1, the EPAD interface of the first management chip U1, and a ground terminal, the anode of the second diode D2 is connected to the power input terminal 100 of the power generation assembly, and the anode of the third diode D3 is connected to the power input terminal of the battery module 10.

[0064] It can be understood that the second diode D2 and the third diode D3 are used to select an input power source, when the voltage corresponding to the motor electric energy is higher than the voltage corresponding to the battery electric energy, the motor electric energy is used to supply power to the load, and when the voltage corresponding to the battery electric energy is higher than the voltage corresponding to the motor electric energy, the battery electric energy is used to supply power to the load. The second capacitor C2 to the tenth capacitor C10 are used to filter high-frequency noise in the input power source, to ensure the stability of the input voltage. The first inductor L1 and the second capacitor C2 to the sixth capacitor C6 constitute a filter network, which is used to smooth the output voltage and reduce the ripple. Optionally, the first management chip U1 is a chip with a model number of TPS5430DDAR, which is a step-down DC-DC converter used to convert an input voltage (VIN) into a stable 5V output (VDD_5V). In general, the circuit selects a suitable input power source, converts the input voltage into a stable 5V output by using the TPS5430DDAR chip, and ensures the purity and stability of the output voltage through the filter network.

[0065] In one embodiment, such as Figure 3 As shown, the second voltage management module 320 includes: a second management chip U2, eleventh capacitors C11 to fifteenth capacitors C15, a first indicator component D4, and a third resistor R3; the second interface and the fourth interface of the second management chip U2 are connected to the first terminal of the eleventh capacitor C11, the first terminal of the twelfth capacitor C12, the first terminal of the thirteenth capacitor C13, and the first terminal of the first indicator component D4, and are used to connect to the load; the second terminal of the first indicator component D4 is grounded through the third resistor R3; the second terminals of the eleventh capacitor, the twelfth capacitor C12, and the thirteenth capacitor C13 are connected to the first interface of the second management chip U2, the second terminal of the fourteenth capacitor C14, the second terminal of the fifteenth capacitor C15, and the ground terminal; the first terminals of the fourteenth capacitor C14 and the fifteenth capacitor C15 are connected to the output terminal of the first voltage management module 310 and the third interface of the second management chip U2.

[0066] Understandably, the output voltage of the first voltage management module 310 is filtered by capacitors C14 and C15 to remove high-frequency noise. Optionally, the second management chip U2 uses an AMS1117-3.3V chip, which is a low-dropout linear regulator (LDO) used to stabilize the input voltage at a 3.3V output. The output voltage of the second management chip U2 is further filtered by capacitors C11, C12, and C13 to ensure the purity and stability of the output voltage. The first indicator component D4 is used to indicate the circuit's operating status. The third resistor R3 limits the current flowing through the first indicator component D4 to prevent it from being damaged by overcurrent. In summary, this circuit converts the 5V input voltage to a stable 3.3V output through the linear regulator AMS1117-3.3V and ensures the purity of the output voltage through the filtering capacitors.

[0067] In one embodiment, the power management circuit 1000 further includes a battery charging circuit 400. The input terminal of the battery charging circuit 400 is connected to the output terminal of the rectifier module 40, and the output terminal of the battery charging circuit 400 is connected to the battery module 10. The battery charging circuit 400 is used to transform and stabilize the motor power when it receives the motor power and then output it to the battery module 10 to charge the battery module 10.

[0068] It can be understood that when the user generates electrical energy through the motion device, the motor electrical energy generated by the three-phase power generation assembly 20 is converted into direct current through the rectifier module 40, and then the motor electrical energy is transmitted to the battery charging circuit 400. The battery charging circuit 400 is used to perform voltage transformation and voltage stabilization processing on the input motor electrical energy, ensure that it meets the charging requirements of the battery module 10, and output the adjusted electrical energy to the battery module 10, thereby realizing the charging of the battery. Therefore, the battery charging circuit 400 not only enables the system to charge the battery with the excess electrical energy generated during the user's movement, prolonging the service life and endurance of the battery, but also improves the energy self-sufficiency and independence of the entire system. In this way, even in the absence of external power, the system can rely on the energy stored in the battery to maintain normal operation, further enhancing the reliability and flexibility of the system. In addition, this design helps to reduce dependence on external power grids, which has certain environmental significance.

[0069] In an embodiment, as shown in Figure 4 The battery charging circuit 400 includes a first current detection circuit 410, a first switching circuit 420, and a first master control circuit 430. The first current detection circuit 410 is connected to the output end of the rectifier module and is used to output a corresponding current detection signal according to the motor electrical energy; the first switching circuit 420 is connected in series between the path between the rectifier module and the power generation assembly access end 100; the first master control circuit 430 is connected to the output end of the first current detection circuit 410 and the controlled end of the first switching circuit 420, respectively, and is used to control the first switching circuit 420 to be disconnected when the current corresponding to the motor electrical energy is not in the set current range according to the current detection signal.

[0070] In this embodiment, the first current detection circuit 410 is connected to the output end of the rectifier module to monitor the current of the motor electrical energy and output a corresponding current detection signal according to the actual current. The first switching circuit 420 is connected in series between the path between the rectifier module and the power generation assembly access end 100, which controls the flow of current. The first master control circuit 430 receives the current detection signal from the first current detection circuit 410 and determines whether the current corresponding to the motor electrical energy is within the set safe current range according to these signals. If the current is not within the set range (e.g., too high or too low), the first master control circuit 430 will issue an instruction to control the first switching circuit 420 to be disconnected, thereby cutting off the current path and preventing the battery from being damaged by abnormal current. In this way, the safety and stability of the battery charging process are ensured, and potential risks caused by current fluctuations are avoided.

[0071] In an embodiment, as shown in Figure 5As shown, the battery charging circuit 400 includes a second current detection circuit 440 and a second master control circuit 450. The second current detection circuit 440 is connected to the output of the rectifier module and outputs a corresponding current detection signal according to the motor electric energy; the second master control circuit 450 is connected to the output of the second current detection circuit 440, and the second master control circuit 450 is configured to control the battery charging circuit 400 to stop working when the current corresponding to the motor electric energy is not within the set current range according to the current detection signal.

[0072] In this embodiment, the second current detection circuit 440 is also connected to the output of the rectifier module and monitors the current of the motor electric energy and outputs a corresponding current detection signal. The second master control circuit 450 is directly connected to the output of the second current detection circuit 440 and is configured to process these current detection signals. When the second master control circuit 450 detects that the current corresponding to the motor electric energy is not within the set safe current range, it will take measures to stop the entire battery charging circuit 400 from working. In this way, the system can be more comprehensively protected from abnormal currents, ensuring the safety of the battery and other electronic components.

[0073] It can be understood that the above two embodiments demonstrate different battery charging circuit 400 design schemes, both of which aim to improve the safety and reliability of the system. The first embodiment introduces a first current detection circuit 410, a first switching circuit 420, and a first master control circuit 430, which can immediately cut off the current path when an abnormal current is detected, preventing the battery from being damaged. The second embodiment uses a second current detection circuit 440 and a second master control circuit 450 to stop the entire battery charging circuit 400 from working when an abnormal current is detected, providing a more comprehensive protection mechanism. Both methods effectively improve the safety during the battery charging process and avoid damage to the device caused by current fluctuations or abnormalities.

[0074] The utility model also provides a circuit board, including the power management circuit 1000 as any preceding item. It needs to be noticed that the circuit board includes the power management circuit 1000, and the specific structure of the power management circuit 1000 refers to the above-mentioned embodiment, since the utility model adopts all the technical schemes of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical schemes of the above-mentioned embodiments, which will not be repeated here.

[0075] It can be understood that the circuit board can be a motion energy control board for managing and distributing the electrical energy from the motion generator. Specifically, the electrical energy generated by the motion generator is first converted into direct current by the rectification module 40, and then enters the motion energy control board for further processing. The power management circuit 1000 in the motion energy control board can perform voltage conversion and voltage stabilization processing on the input motor electrical energy, and output the electrical energy to the output electrical equipment (such as a display) or a battery device as needed. In addition, the circuit board also contains a battery charging circuit 400, which can charge the battery when the motor electrical energy is sufficient, ensuring that the system can rely on the energy stored in the battery to maintain normal operation even without external power supply. In this way, it can be ensured that the user can obtain stable and efficient power support when using the motion device.

[0076] The utility model also provides a kind of motion equipment, and the motion equipment also includes the circuit board as described above. The specific structure of the circuit board refers to the above embodiment, since the present motion equipment adopts all the technical solutions of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0077] In the embodiment, the motion equipment includes a battery module 10, a three-phase power generation assembly 20, a rotating member, and a rectification module 40. The rotating member is drivingly connected to the three-phase power generation assembly 20, and the rotating member drives the three-phase power generation assembly 20 to output motor electrical energy when rotating. The input end of the rectification module 40 is connected to the output end of the three-phase power generation assembly 20, and the rectification module 40 is used to rectify the motor electrical energy. The circuit board is used to compare the motor voltage and the battery voltage and select the larger one for voltage conversion and voltage stabilization. Meanwhile, the circuit board also includes a battery charging circuit 400. When the motor voltage is greater than the battery voltage, the circuit board converts and stabilizes the motor voltage to charge the battery module 10 for subsequent use. In this way, the motion equipment using the circuit board can reduce unstable output current and unstable power supply of electronic equipment.

[0078] The above is only an exemplary embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structural transformation or direct / indirect application in other related technical fields based on the technical concept of the utility model and the content of the utility model specification and drawings are included in the patent protection scope of the utility model.

Claims

1. A power management circuit, characterized by, The power management circuit is applied to a sports device, and the sports device comprises a battery module, a three-phase power generation assembly, a rotating member and a rectifier module; the rotating member is in driving connection with the three-phase power generation assembly, and the rotating member drives the three-phase power generation assembly to output motor power when rotating; and the input end of the rectifier module is connected with the output end of the three-phase power generation assembly. The power management circuit comprises: a power generation assembly access end connected with the output end of the rectifier module, used for receiving the rectified motor power; a battery module access end connected with the battery module, used for accessing the battery power output by the battery module; a voltage management circuit, the input end of the voltage management circuit is connected with the power generation assembly access end and the battery module access end respectively, and the output end of the voltage management circuit is used for connecting a load; the voltage management circuit is used for, when receiving the motor power, outputting the motor power to the load after voltage transformation and voltage stabilization; and the voltage management circuit is also used for, when not receiving the motor power, outputting the battery power to the load after voltage transformation.

2. The power management circuit of claim 1, wherein, The voltage management circuit comprises: a first voltage management module connected with the power generation assembly access end, used for outputting the motor power received from the power generation assembly access end to the load after voltage transformation and voltage stabilization; a second voltage management module connected with the output end of the first voltage management module, used for receiving the voltage output by the first voltage management module and outputting the voltage received from the first voltage management module to the load after voltage transformation and / or voltage stabilization.

3. The power management circuit of claim 2, wherein, The first voltage management module is also connected with the battery module access end, and the first voltage management module is also used for, when not receiving the motor power, outputting the battery power output by the battery module to the second voltage management module and the load after voltage transformation and voltage stabilization.

4. The power management circuit of claim 3, wherein, The first voltage management module comprises a first management chip, a first capacitor to a tenth capacitor, a first inductor, a first resistor, a second resistor, a first diode, a second diode and a third diode; the first interface of the first management chip is connected with the first end of the first capacitor, the eighth interface of the first management chip is connected with the second end of the first capacitor, the cathode of the first diode and the first end of the first inductor, the anode of the first diode is grounded, the second end of the first inductor is connected with the first end of the first resistor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor, the first end of the sixth capacitor is used for connecting the load and the second voltage management module, the second end of the first resistor is connected with the fourth interface of the first management chip and the first end of the second resistor, and the second end of the second resistor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor are grounded. The seventh port of the first management chip is connected with the first end of the seventh capacitor, the first end of the eighth capacitor, the first end of the ninth capacitor, the first end of the tenth capacitor, the cathode of the second diode, and the cathode of the third diode, the second ends of the seventh capacitor, the eighth capacitor, the ninth capacitor, and the tenth capacitor are connected with the sixth interface of the first management chip, the EPAD interface of the first management chip, and a ground terminal, the anode of the second diode is connected with the power generation assembly access terminal, and the anode of the third diode is connected with the battery module access terminal.

5. The power management circuit of claim 2, wherein, The second voltage management module comprises a second management chip, eleventh to fifteenth capacitors, a first indication component, and a third resistor. The second interface and the fourth interface of the second management chip are connected with the first end of the eleventh capacitor, the first end of the twelfth capacitor, the first end of the thirteenth capacitor, and the first end of the first indication component, and are used for connecting a load; the second end of the first indication component is grounded through the third resistor, the second ends of the eleventh capacitor, the twelfth capacitor, and the thirteenth capacitor are connected with the first interface of the second management chip, the second end of the fourteenth capacitor, the second end of the fifteenth capacitor, and a ground terminal, and the first ends of the fourteenth capacitor and the fifteenth capacitor are connected with the output end of the first voltage management module and the third interface of the second management chip.

6. The power management circuit of any one of claims 1 to 5, wherein, The power management circuit further comprises a battery charging circuit, an input end of the battery charging circuit is connected with an output end of the rectifier module, and an output end of the battery charging circuit is connected with the battery module, so that the battery charging circuit is used for performing voltage transformation and voltage stabilization on the motor electric energy and then outputting to the battery module to charge the battery module when receiving the motor electric energy.

7. The power management circuit of claim 6, wherein, The battery charging circuit comprises: a first current detection circuit, which is connected with the output end of the rectifier module and is used for outputting a corresponding current detection signal according to the motor electric energy; a first switch circuit, which is connected in series on a path between the rectifier module and the power generation assembly access terminal; a first master control circuit, which is connected with the output end of the first current detection circuit and the controlled end of the first switch circuit respectively, and is used for controlling the first switch circuit to be disconnected when determining that the current corresponding to the motor electric energy is not in a set current range according to the current detection signal.

8. The power management circuit of claim 6, wherein, The battery charging circuit comprises: a second current detection circuit, which is connected with the output end of the rectifier module and is used for outputting a corresponding current detection signal according to the motor electric energy; a second master control circuit, which is connected with the output end of the second current detection circuit, and is used for controlling the battery charging circuit to stop working when determining that the current corresponding to the motor electric energy is not in a set current range according to the current detection signal.

9. A circuit board, characterized by The power management circuit comprises the power management circuit according to any one of claims 1 to 8. The power management circuit comprises the power management circuit according to any one of claims 1 to 8.

10. Sports equipment, characterized in that The motion device comprises a battery module, a three-phase power generation assembly, a rotating member and a rectifier module; the rotating member is in driving connection with the three-phase power generation assembly, the rotating member drives the three-phase power generation assembly to output motor electric energy when rotating, and the input end of the rectifier module is connected with the output end of the three-phase power generation assembly, and the rectifier module is used for rectifying the motor electric energy and outputting. The motion device further comprises the circuit board as claimed in claim 9.

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