A lithium battery cable cutting device

Abstract

This utility model belongs to the field of shearing control technology and relates to a lithium battery cable shearing device, comprising: a lithium battery, a DC motor controller, a power management circuit, a switch control circuit, an LED display circuit, a DC motor U-phase winding drive circuit, a DC motor V-phase winding drive circuit, and a DC motor W-phase winding drive circuit, all electrically connected. One end of the power management circuit is electrically connected to the lithium battery, and the other end is connected to the DC motor controller, the switch control circuit, the LED display circuit, the DC motor U-phase winding drive circuit, the DC motor V-phase winding drive circuit, and the DC motor W-phase winding drive circuit, respectively. The switch control circuit is connected to the DC motor controller. The efficient, stable, environmentally friendly, intelligent, and user-friendly design significantly improves the efficiency and quality of cable shearing operations, meeting the demands of modern industrial production for high precision, high efficiency, and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of shearing control technology, and more specifically, to a lithium battery cable shearing device. Background Technology

[0002] Existing lithium battery cable cutting technology suffers from several drawbacks. Firstly, power management is chaotic. Traditional devices often employ distributed power supplies, with each module powered independently, leading to high overall energy consumption and poor stability. This makes them prone to equipment failures caused by localized power supply anomalies. Secondly, control efficiency is low. The lack of a highly efficient and unified controller hinders the coordinated operation of various drive circuits, resulting in unstable motor operation and significantly reduced cutting accuracy, thus affecting cable cutting quality. Thirdly, information feedback is lacking. Without a dedicated display circuit, operators cannot obtain real-time information on the equipment's operating status, such as battery level and operating mode, hindering timely adjustments to operations. Utility Model Content

[0003] To address the aforementioned deficiencies in the prior art, this utility model provides a lithium battery cable cutting device, comprising:

[0004] The system comprises a lithium battery, a DC motor controller, a power management circuit, a switch control circuit, an LED display circuit, a DC motor U-phase winding drive circuit, a DC motor V-phase winding drive circuit, and a DC motor W-phase winding drive circuit, all electrically connected. One end of the power management circuit is electrically connected to the lithium battery, and the other end is connected to the DC motor controller, the switch control circuit, the LED display circuit, the DC motor U-phase winding drive circuit, the DC motor V-phase winding drive circuit, and the DC motor W-phase winding drive circuit, respectively. The switch control circuit is connected to the DC motor controller, and the DC motor controller is electrically connected to the DC motor U-phase winding drive circuit, the DC motor V-phase winding drive circuit, and the DC motor W-phase winding drive circuit, respectively. The LED display circuit is connected to the power management circuit, thereby obtaining operating power.

[0005] Preferably, the DC motor controller includes: LKS03C.

[0006] Preferably, the power management circuit includes: pin 8 of the power management chip U1 is connected to the base of transistor Q4, and the collector of transistor Q4 is connected to one end of resistor R18.

[0007] Preferably, the switch control circuit includes: the emitter of transistor Q2 is connected to one end of resistor R41; the other end of resistor R41 is connected to the base of transistor Q2 and one end of resistor R43; the other end of resistor R43 is connected to the anode of diode D5, the anode of diode D7, and the collector of transistor Q3; the cathode of diode D5 is connected to the cathode of diode D6; the anode of diode D6 is connected to one end of resistor R45 and one end of resistor R46; the cathode of diode D7 is connected to the cathode of diode D8; the anode of diode D8 is connected to one end of resistor R14 and one end of resistor R16; the emitter of transistor Q3 is connected to one end of resistor R51 and grounded; and the base of transistor Q3 is connected to the other end of resistor R51 and one end of resistor R47.

[0008] Preferably, the LED display circuit includes: one end of resistor R62 is connected to the drain of field-effect transistor V13, the gate of field-effect transistor V13 is grounded, the source of field-effect transistor V13 is connected to one end of resistor R61, the other end of resistor R61 is connected to pin 2 of LED terminal, and pin 1 of LED terminal is connected to +18V voltage.

[0009] Preferably, the DC motor U-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V2, the drain of field-effect transistor V4, one end of resistor R8, the gate of field-effect transistor V1, the drain of field-effect transistor V3, one end of resistor R7, and one end of capacitor C5; the drain of field-effect transistor V2 is connected to one end of capacitor C2 and the drain of field-effect transistor V1; the source of field-effect transistor V2 is connected to one end of resistor R2 and the other end of resistor R8; and the other end of resistor R2... One end of the resistor is connected to one end of the resistor R5. The other end of the resistor R5 is connected to the other end of the resistor R7 and the source of the field-effect transistor V1. The source of the field-effect transistor V4 is connected to one end of the resistor R12 and one end of the resistor R9. The other end of the resistor R9 is connected to one end of the resistor R11. The other end of the resistor R11 is connected to one end of the resistor R13 and the source of the field-effect transistor V3. The gate of the field-effect transistor V3 is connected to the other end of the resistor R13, the other end of the resistor R12, and the gate of the field-effect transistor V4.

[0010] Preferably, the DC motor V-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V6, the drain of field-effect transistor V8, one end of resistor R20, the gate of field-effect transistor V5, the drain of field-effect transistor V7, one end of resistor R21, and one end of capacitor C8, respectively; the drain of field-effect transistor V6 is connected to the drain of field-effect transistor V5; the source of field-effect transistor V6 is connected to one end of resistor R15 and the other end of resistor R20, respectively; and the other end of resistor R15 is connected to resistor R... One end of resistor R19 is connected to the other end of resistor R21 and the source of field-effect transistor V5. The source of field-effect transistor V8 is connected to one end of resistor R25 and one end of resistor R23. The other end of resistor R23 is connected to one end of resistor R24. The other end of resistor R24 ​​is connected to one end of resistor R26 and the source of field-effect transistor V7. The gate of field-effect transistor V7 is connected to the other end of resistor R26, the other end of resistor R25, and the gate of field-effect transistor V8.

[0011] Preferably, the DC motor W-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V10, the drain of field-effect transistor V12, one end of resistor R37, the gate of field-effect transistor V9, the drain of field-effect transistor V11, one end of resistor R38, and one end of capacitor C14; the drain of field-effect transistor V10 is connected to the drain of field-effect transistor V9; the source of field-effect transistor V10 is connected to one end of resistor R35 and the other end of resistor R37; the other end of resistor R35 is connected to one end of resistor R36; and the other end of resistor R36 is connected to the other end of resistor R38. The source of field-effect transistor V9 is connected to one end of resistor R42 and one end of resistor R39, respectively. The other end of resistor R39 is connected to one end of resistor R40. The other end of resistor R40 is connected to one end of resistor R44 and the source of field-effect transistor V11, respectively. The gate of field-effect transistor V11 is connected to the other end of resistor R44, the other end of resistor R42, the gate of field-effect transistor V12, one end of resistor R50, and one end of resistor R48, respectively. The other end of resistor R50 is connected to one end of capacitor C19, and the other end of capacitor C19 is connected to the other end of resistor R49.

[0012] Preferably, the device further includes a filtering circuit connected to the power management circuit. The filtering circuit includes: one end of resistor R27 connected to one end of capacitor C11 and one end of resistor R28; one end of resistor R30 connected to one end of capacitor C12 and one end of resistor R31; one end of resistor R33 connected to one end of capacitor C13 and one end of resistor R34; and the other end of resistor R28 connected to and grounded to the other ends of resistors R31, R34, C13, C12, and C11.

[0013] Preferably, the device further includes: a protection circuit, one end of which is connected to the output terminal of the power management circuit to monitor the power supply voltage in real time; the other end of which is connected to the input terminal of the DC motor controller, the input terminal of the DC motor U-phase winding drive circuit, the input terminal of the DC motor V-phase winding drive circuit, and the input terminal of the DC motor W-phase winding drive circuit to monitor the motor operating status.

[0014] The lithium battery cable cutting device of this utility model has the following beneficial effects:

[0015] Using lithium batteries as the power source not only ensures long-term battery life, but also ensures the continuity and stability of the shearing operation due to its stable power output. At the same time, the environmental performance of lithium batteries is in line with the current trend of green and sustainable development.

[0016] Through intelligent power distribution by the power management circuit, the device can achieve precise power supply to each functional module, which not only optimizes energy efficiency but also extends the service life of the equipment and greatly reduces maintenance costs.

[0017] The close integration of the DC motor controller and the three-phase winding drive circuit makes the output of shearing force more stable and controllable. This refined control not only improves the shearing accuracy, but also reduces safety hazards during operation.

[0018] The addition of LED display circuitry provides users with intuitive feedback on device status, making operation more convenient and facilitating timely detection and resolution of problems.

[0019] Its efficient, stable, environmentally friendly, intelligent, and user-friendly design significantly improves the efficiency and quality of cable cutting operations, meeting the demands of modern industrial production for high precision, high efficiency, and high reliability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort. The utility model will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0021] Figure 1 This is a schematic diagram of the module structure of the lithium battery cable cutting device of this utility model;

[0022] Figure 2 This is a circuit diagram of the DC motor controller in the lithium battery cable cutting device of this utility model;

[0023] Figure 3 This is a circuit diagram of the power management circuit in the lithium battery cable cutting device of this utility model;

[0024] Figure 4 This is a circuit diagram of the switch control circuit in the lithium battery cable cutting device of this utility model;

[0025] Figure 5 This is a circuit diagram of the LED display circuit in the lithium battery cable cutting device of this utility model;

[0026] Figure 6 This is a circuit diagram of the DC motor U-phase winding drive circuit in the lithium battery cable cutting device of this utility model;

[0027] Figure 7 This is a circuit diagram of the DC motor V-phase winding drive circuit in the lithium battery cable cutting device of this utility model;

[0028] Figure 8 This is a circuit diagram of the DC motor W-phase winding drive circuit in the lithium battery cable cutting device of this utility model;

[0029] Figure 9 This is a circuit diagram of the filter circuit in the lithium battery cable cutting device of this utility model. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] Please see Figure 1 This is a schematic diagram of the module structure of the lithium battery cable cutting device of this utility model. Figure 1 As shown, the lithium battery cable cutting device provided in the first embodiment of this utility model includes at least a lithium battery, a DC motor controller, a power management circuit, a switch control circuit, an LED display circuit, a DC motor U-phase winding drive circuit, a DC motor V-phase winding drive circuit, and a DC motor W-phase winding drive circuit, which are electrically connected. One end of the power management circuit is electrically connected to the lithium battery, and the other end is connected to the DC motor controller, the switch control circuit, the LED display circuit, the DC motor U-phase winding drive circuit, the DC motor V-phase winding drive circuit, and the DC motor W-phase winding drive circuit, respectively. The switch control circuit is connected to the DC motor controller, and the DC motor controller is electrically connected to the DC motor U-phase winding drive circuit, the V-phase winding drive circuit, and the W-phase winding drive circuit, respectively. The LED display circuit is connected to the power management circuit to obtain working power.

[0034] Figure 2 This is a circuit diagram of the DC motor controller in the lithium battery cable cutting device of this utility model. Figure 2 As shown, the DC motor controller includes, but is not limited to, the LKS03C. The core function of the LKS03C is as a highly integrated brushless DC motor controller, primarily used to drive and control BLDC or PMSM motors in various applications. It simplifies the design of motor control systems.

[0035] The LKS03C features and functions include:

[0036] (1) High integration:

[0037] Built-in microcontroller core: typically based on ARM Crtex-M0 or other high-efficiency cores, responsible for running motor control algorithms (such as FC - field-oriented control). Built-in pre-driver: can directly drive externally connected power MSFETs or IGBTs (if three half-bridges are needed), forming a complete inverter bridge arm. Built-in operational amplifier: used for current sampling amplification. Built-in comparator: used for fast response functions such as overcurrent protection. Built-in ADC: used to acquire analog signals such as phase current, bus voltage, and temperature. Built-in LD regulator: supplies power to the chip itself and some peripheral circuits.

[0038] (2) High-performance motor control:

[0039] Supports advanced FC (Field-Oriented Control) algorithms, providing high efficiency, low noise, high torque performance, and smooth start-up. Supports Hall sensor or sensorless control methods (typically through back EMF detection). Provides PWM output control for the inverter bridge.

[0040] (3) Abundant interfaces and peripherals: UART, SPI, I2C and other communication interfaces, which facilitate communication with host computers or other devices; general-purpose GPI pins; timers; watchdog timers.

[0041] (4) Protection functions: overcurrent protection; overvoltage / undervoltage protection; overheat protection; stall protection; phase loss protection.

[0042] Figure 3 This is a circuit diagram of the power management circuit in the lithium battery cable cutting device of this utility model. Figure 3 As shown, the power management circuit includes: pin 8 of the power management chip U1 is connected to the base of transistor Q4, and the collector of transistor Q4 is connected to one end of resistor R18. For example... Figure 3 In the specific implementation, the power management chip U1 is QC573.

[0043] Figure 4 This is a circuit diagram of the switch control circuit in the lithium battery cable cutting device of this utility model. Figure 4As shown, the switch control circuit includes: the emitter of transistor Q2 is connected to one end of resistor R41; the other end of resistor R41 is connected to the base of transistor Q2 and one end of resistor R43; the other end of resistor R43 is connected to the anode of diode D5, the anode of diode D7, and the collector of transistor Q3; the cathode of diode D5 is connected to the cathode of diode D6; the anode of diode D6 is connected to one end of resistor R45 and one end of resistor R46; the cathode of diode D7 is connected to the cathode of diode D8; the anode of diode D8 is connected to one end of resistor R14 and one end of resistor R16; the emitter of transistor Q3 is connected to one end of resistor R51 and grounded; and the base of transistor Q3 is connected to the other end of resistor R51 and one end of resistor R47.

[0044] The circuit consisting of transistor Q2 and resistors R41 and R43 is mainly responsible for amplifying and transmitting the control signal. When a control signal is input, transistor Q2 adjusts the conduction state between its collector and emitter according to the change in base current, thereby controlling the subsequent circuitry.

[0045] Diodes D5, D6, D7, and D8, together with resistors R45, R46, R14, and R16, form a rectification and current limiting network, ensuring that the current in the circuit is stable and in the correct direction, and protecting the subsequent circuits from the impact of reverse current.

[0046] Transistor Q3, along with its surrounding resistors R51 and R47, forms a stable current amplification and control unit. Based on changes in the input signal, it precisely controls the current in the grounding loop, thereby controlling the entire switching control circuit. This switching control circuit ensures the high efficiency and stability of the lithium battery cable cutting device during operation.

[0047] Figure 5 This is a circuit diagram of the LED display circuit in the lithium battery cable cutting device of this utility model. Figure 5 As shown, the LED display circuit includes: one end of resistor R62 is connected to the drain of field-effect transistor V13, the gate of field-effect transistor V13 is grounded, the source of field-effect transistor V13 is connected to one end of resistor R61, the other end of resistor R61 is connected to pin 2 of LED terminal, and pin 1 of LED terminal is connected to +18V voltage.

[0048] When the circuit is powered on, the field-effect transistor V13 is in a conducting state because its gate is grounded. At this time, the +18V voltage flows in through pin 1 of the LED terminal, then through resistor R61, the source and drain of the field-effect transistor V13, and resistor R62 to form a circuit. Resistor R61 limits the current, preventing excessive current from damaging the LED, and is also connected in series with the LED to ensure the LED receives its operating voltage. Resistor R62 further shares the voltage, ensuring circuit stability. Under the influence of voltage and current, the LED lights up, visually displaying the circuit's operating status and providing clear instructions to the operator, ensuring the normal and safe operation of the lithium battery cable cutting device.

[0049] Figure 6 This is a circuit diagram of the DC motor U-phase winding drive circuit in the lithium battery cable cutting device of this utility model. Figure 6 As shown, the DC motor U-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V2, the drain of field-effect transistor V4, one end of resistor R8, the gate of field-effect transistor V1, the drain of field-effect transistor V3, one end of resistor R7, and one end of capacitor C5; the drain of field-effect transistor V2 is connected to one end of capacitor C2 and the drain of field-effect transistor V1; the source of field-effect transistor V2 is connected to one end of resistor R2 and the other end of resistor R8; the other end of resistor R2... One end of resistor R5 is connected to the other end of resistor R7 and the source of field-effect transistor V1. The source of field-effect transistor V4 is connected to one end of resistor R12 and one end of resistor R9. The other end of resistor R9 is connected to one end of resistor R11. The other end of resistor R11 is connected to one end of resistor R13 and the source of field-effect transistor V3. The gate of field-effect transistor V3 is connected to the other end of resistor R13, the other end of resistor R12, and the gate of field-effect transistor V4.

[0050] The DC motor U-phase winding drive circuit uses field-effect transistors (FETs) as its core to achieve motor control. FETs V1, V2, V3, and V4 form the upper and lower bridge arms, respectively, and control the current flow by turning them on and off.

[0051] When V1 and V4 are on and V2 and V3 are off, the current flows from the positive terminal of the power supply through V1, the U-phase winding, and V4 to ground, forming a positive current loop that drives the motor to rotate forward. Conversely, when V2 and V3 are on and V1 and V4 are off, the current flows in the opposite direction, and the motor rotates in reverse.

[0052] Resistors R7 and R8 act as voltage dividers and current limiters, ensuring circuit stability. One end of resistors R7 and R8 is connected to the U-phase winding, and the other end is connected to the source of the upper and lower bridge arms, respectively, limiting the gate drive current and preventing overcurrent damage to the transistors. Capacitors C2 and C5 are used for filtering, reducing circuit noise and interference, and ensuring signal purity.

[0053] By controlling the turn-on and turn-off sequence and timing of each field-effect transistor, precise driving of the motor's U-phase winding can be achieved, thereby controlling the motor's speed and direction, and meeting the precise requirements of the lithium battery cable cutting device for motor drive.

[0054] Figure 7 This is a circuit diagram of the DC motor V-phase winding drive circuit in the lithium battery cable cutting device of this utility model. Figure 7 As shown, the DC motor V-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V6, the drain of field-effect transistor V8, one end of resistor R20, the gate of field-effect transistor V5, the drain of field-effect transistor V7, one end of resistor R21, and one end of capacitor C8, respectively; the drain of field-effect transistor V6 is connected to the drain of field-effect transistor V5; the source of field-effect transistor V6 is connected to one end of resistor R15 and the other end of resistor R20, respectively; and the other end of resistor R15 is connected to resistor R1... One end of resistor R19 is connected to the other end of resistor R21 and the source of field-effect transistor V5. The source of field-effect transistor V8 is connected to one end of resistor R25 and one end of resistor R23. The other end of resistor R23 is connected to one end of resistor R24. The other end of resistor R24 ​​is connected to one end of resistor R26 and the source of field-effect transistor V7. The gate of field-effect transistor V7 is connected to the other end of resistor R26, the other end of resistor R25, and the gate of field-effect transistor V8.

[0055] Field-effect transistors V5, V6, V7, and V8 act as core switching elements, controlling the on / off state and direction of current flow. When a suitable drive signal is applied to the gates of V5 and V6, V5 turns on and V6 turns off, allowing current to flow through the drain and source of V5 to the U-phase winding; conversely, when a suitable drive signal is applied, V6 turns on and V5 turns off, changing the current path. Similarly, V7 and V8, controlled by gate signals, affect the current on the other side of the winding.

[0056] Resistors R15, R19, R20, and R21 form a voltage divider and current limiting network. R15 and R19, and R20 and R21 work together to stabilize the gate voltage of the MOSFET and prevent damage from overvoltage. Resistors R23, R24, R25, and R26 are used for voltage division and stabilization of the gate signals of MOSFETs V7 and V8, ensuring that the gate voltage is within a safe and effective range.

[0057] Capacitor C8 acts as a filter, reducing noise and interference in the circuit and making the drive signal more stable. By precisely controlling the on and off states of each field-effect transistor, this circuit can flexibly adjust the magnitude and direction of the current in the U-phase winding, thereby driving the U-phase winding of the DC motor and ensuring stable and efficient operation of the motor in the shearing device.

[0058] Figure 8 This is a circuit diagram of the DC motor W-phase winding drive circuit in the lithium battery cable cutting device of this utility model. Figure 8 As shown, the DC motor W-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V10, the drain of field-effect transistor V12, one end of resistor R37, the gate of field-effect transistor V9, the drain of field-effect transistor V11, one end of resistor R38, and one end of capacitor C14. The drain of field-effect transistor V10 is connected to the drain of field-effect transistor V9. The source of field-effect transistor V10 is connected to one end of resistor R35 and the other end of resistor R37. The other end of resistor R35 is connected to one end of resistor R36. The other end of resistor R36 is connected to the other end of resistor R38 and the field-effect transistor C14. The source of field-effect transistor V9 is connected to the source of field-effect transistor V12, which is connected to one end of resistor R42 and one end of resistor R39. The other end of resistor R39 is connected to one end of resistor R40. The other end of resistor R40 is connected to one end of resistor R44 and the source of field-effect transistor V11. The gate of field-effect transistor V11 is connected to the other end of resistor R44, the other end of resistor R42, the gate of field-effect transistor V12, one end of resistor R50, and one end of resistor R48. The other end of resistor R50 is connected to one end of capacitor C19, and the other end of capacitor C19 is connected to the other end of resistor R49.

[0059] Field-effect transistors (V9, V10, V11, V12) are the core control components. By controlling the on and off states of each field-effect transistor, precise regulation of the U-phase winding current is achieved.

[0060] When a control signal is applied, V10 and V9, and V12 and V11 form complementary conduction pairs. For example, V10 is on and V9 is off, while V12 is off and V11 is on. Current flows from the power supply through V10, the U-phase winding, and V11 to form a loop, driving the motor. Resistors (R35 - R44) limit current, divide voltage, and provide protection, preventing excessive current from damaging the devices. Capacitors (C14, C19) filter the circuit voltage, stabilizing it and reducing interference. By precisely adjusting the gate voltage of each field-effect transistor, their conduction level can be changed, thereby controlling the magnitude and direction of the U-phase winding current. This allows for flexible adjustment of the motor speed and direction, meeting the precise requirements of the lithium-ion cable cutting device for motor drive and ensuring stable equipment operation.

[0061] In a specific implementation, the device of this utility model may further include a filtering circuit, which is connected to the power management circuit. The filtering circuit includes: one end of resistor R27 is connected to one end of capacitor C11 and one end of resistor R28 respectively; one end of resistor R30 is connected to one end of capacitor C12 and one end of resistor R31 respectively; one end of resistor R33 is connected to one end of capacitor C13 and one end of resistor R34 respectively; and the other end of resistor R28 is connected to and grounded to the other ends of resistor R31, resistor R34, capacitor C13, capacitor C12, and capacitor C11 respectively.

[0062] The filter circuit is closely connected to the power management circuit, undertaking the crucial tasks of filtering out power supply noise and stabilizing the output voltage. Its working principle is based on the synergistic effect of resistors and capacitors. Resistors R27, R30, and R33, together with capacitors C11, C12, and C13, form an RC filter unit. When a power signal enters the circuit, high-frequency noise components, due to the capacitor's characteristic of "passing high frequencies and blocking low frequencies," preferentially flow to ground through the capacitor, while the effective signal is preserved and continues to be transmitted due to the resistor's obstruction of high-frequency signals. Simultaneously, the other ends of resistors R28, R31, and R34 are grounded together and connected to the other ends of each capacitor, forming a common ground loop to ensure stable output of the filtered signal. This multi-stage RC filter structure, through the combination of different resistors and capacitors, can effectively filter out noise of different frequencies, thereby providing a clean and stable DC power supply to the power management circuit of the lithium battery cable cutting device, ensuring the reliable operation of the device.

[0063] In specific implementation, the device of this utility model may further include: a protection circuit, one end of which is connected to the output terminal of the power management circuit to monitor the power supply voltage in real time; the other end of which is connected to the input terminal of the DC motor controller, the input terminal of the DC motor U-phase winding drive circuit, the input terminal of the DC motor V-phase winding drive circuit, and the input terminal of the DC motor W-phase winding drive circuit to monitor the motor operating status.

[0064] In practical implementation, the protection circuit includes: a voltage detection chip, a current sensor, a logic control chip, and switching elements, all electrically connected. The voltage detection chip, as the core monitoring element of the protection circuit, is connected to the output of the power management circuit and converts the power supply voltage into a processable electrical signal in real time. An internal comparator compares the detected voltage with a preset safe voltage range. If the voltage exceeds the range, the voltage detection chip outputs a high-level or low-level abnormal signal. The current sensor is installed in the main circuit of the motor drive circuit to monitor the motor's operating current in real time. When the current exceeds a set safe threshold, the current sensor generates a corresponding signal change, which is transmitted to the subsequent processing circuit. The logic control chip receives signals from the voltage detection chip and the current sensor, performs logical operations and judgments. According to the preset protection strategy, when an abnormal signal is detected, the logic control chip outputs a control signal to drive the switching control circuit to cut off the power supply. The switching element (such as a MOSFET) is connected between the power supply and the motor drive circuit and is controlled by the logic control chip. When the logic control chip determines that an abnormality has occurred, it controls the switching element to open, cutting off the power supply and thus protecting the entire device.

[0065] The working principle of this utility model device is as follows:

[0066] (1) Power generation stage:

[0067] When the user presses the start button, the switch control circuit receives the start signal and transmits it to the DC motor controller. Based on the received signal, the DC motor controller begins outputting control signals to the U-phase, V-phase, and W-phase winding drive circuits of the DC motor. Each phase winding drive circuit amplifies and converts the control signals, providing appropriate current to each phase winding of the DC motor. Under the influence of this current, the rotor of the DC motor begins to rotate, generating mechanical power.

[0068] (2) Power transmission and shearing action execution stage:

[0069] The mechanical power generated by the DC motor is transmitted to the shearing blades through a transmission mechanism (such as gears or chains). This mechanism converts the high-speed rotation of the motor into linear motion or a suitable shearing motion of the shearing blades, allowing them to cut the lithium-ion battery cable with a specific speed and force. During the shearing process, the DC motor controller precisely controls the motor's speed and torque according to a preset program or real-time feedback signals to ensure smooth shearing. For example, when shearing thicker cables, the controller increases the motor's torque output to ensure a smooth cut; while when shearing thinner cables, the controller adjusts the motor's speed and torque appropriately to avoid damaging the cable or device due to excessive force.

[0070] (3) Status monitoring and feedback phase:

[0071] Throughout the shearing process, the LED display circuit shows the device's operating status in real time. For example, when the battery is low, the LEDs will flash in a specific pattern to remind the user to charge it promptly; when the motor malfunctions, the LEDs will also issue warnings to the user through different display methods. Simultaneously, the device may also contain sensors and other monitoring components to monitor parameters such as motor temperature and current in real time, feeding this information back to the DC motor controller. The controller adjusts its control strategy promptly based on the feedback information to ensure the device operates under safe and stable conditions.

[0072] (4) Stopping phase:

[0073] Once the shearing action is complete, the user presses the stop button, and the switch control circuit transmits a stop signal to the DC motor controller. Upon receiving the stop signal, the controller stops outputting control signals to the drive circuits of each phase winding. The drive circuits of each phase winding no longer supply current to the DC motor windings, the motor gradually stops rotating, and the shearing blades also stop moving, thus ending the entire shearing process.

[0074] The beneficial effects of this utility model, through the design of the above embodiments, are as follows:

[0075] Using lithium batteries as the power source not only ensures long-term battery life, but also ensures the continuity and stability of the shearing operation due to its stable power output. At the same time, the environmental performance of lithium batteries is in line with the current trend of green and sustainable development.

[0076] Through intelligent power distribution by the power management circuit, the device can achieve precise power supply to each functional module, which not only optimizes energy efficiency but also extends the service life of the equipment and greatly reduces maintenance costs.

[0077] The close integration of the DC motor controller and the three-phase winding drive circuit makes the output of shearing force more stable and controllable. This refined control not only improves the shearing accuracy, but also reduces safety hazards during operation.

[0078] The addition of LED display circuitry provides users with intuitive feedback on device status, making operation more convenient and facilitating timely detection and resolution of problems.

[0079] Its efficient, stable, environmentally friendly, intelligent, and user-friendly design significantly improves the efficiency and quality of cable cutting operations, meeting the demands of modern industrial production for high precision, high efficiency, and high reliability.

[0080] This utility model has been described based on specific embodiments, but those skilled in the art will understand that various changes and equivalent substitutions can be made without departing from the scope of this utility model. Furthermore, to adapt to specific applications of this utility model, numerous modifications can be made without departing from its protection scope. Therefore, this utility model is not limited to the specific embodiments disclosed herein, but includes all embodiments falling within the protection scope of the claims.

Claims

1. A lithium battery cable shearing device, characterized by, include: The system comprises a lithium battery, a DC motor controller, a power management circuit, a switch control circuit, an LED display circuit, a DC motor U-phase winding drive circuit, a DC motor V-phase winding drive circuit, and a DC motor W-phase winding drive circuit, all electrically connected. One end of the power management circuit is electrically connected to the lithium battery, and the other end is connected to the DC motor controller, the switch control circuit, the LED display circuit, the DC motor U-phase winding drive circuit, the DC motor V-phase winding drive circuit, and the DC motor W-phase winding drive circuit, respectively. The switch control circuit is connected to the DC motor controller, and the DC motor controller is electrically connected to the DC motor U-phase winding drive circuit, the DC motor V-phase winding drive circuit, and the DC motor W-phase winding drive circuit, respectively. The LED display circuit is connected to the power management circuit, thereby obtaining operating power.

2. The lithium battery cable shearing device of claim 1, wherein, The DC motor controller includes: LKS03C.

3. The lithium battery cable shearing device of claim 1, wherein, The power management circuit includes: pin 8 of the power management chip U1 is connected to the base of transistor Q4, and the collector of transistor Q4 is connected to one end of resistor R18.

4. The lithium battery cable shearing device of claim 1, wherein, The switch control circuit includes: the emitter of transistor Q2 is connected to one end of resistor R41; the other end of resistor R41 is connected to the base of transistor Q2 and one end of resistor R43; the other end of resistor R43 is connected to the anode of diode D5, the anode of diode D7, and the collector of transistor Q3; the cathode of diode D5 is connected to the cathode of diode D6; the anode of diode D6 is connected to one end of resistor R45 and one end of resistor R46; the cathode of diode D7 is connected to the cathode of diode D8; the anode of diode D8 is connected to one end of resistor R14 and one end of resistor R16; the emitter of transistor Q3 is connected to one end of resistor R51 and grounded; and the base of transistor Q3 is connected to the other end of resistor R51 and one end of resistor R47.

5. The lithium battery cable shearing device of claim 1, wherein, The LED display circuit includes: one end of resistor R62 is connected to the drain of field-effect transistor V13, the gate of field-effect transistor V13 is grounded, the source of field-effect transistor V13 is connected to one end of resistor R61, the other end of resistor R61 is connected to pin 2 of LED terminal, and pin 1 of LED terminal is connected to +18V voltage.

6. The lithium battery cable shearing device of claim 1, wherein, The DC motor U-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V2, the drain of field-effect transistor V4, one end of resistor R8, the gate of field-effect transistor V1, the drain of field-effect transistor V3, one end of resistor R7, and one end of capacitor C5; the drain of field-effect transistor V2 is connected to one end of capacitor C2 and the drain of field-effect transistor V1; the source of field-effect transistor V2 is connected to one end of resistor R2 and the other end of resistor R8; and the other end of resistor R2 is connected to... One end of resistor R5 is connected to the resistor R7, and the other end of resistor R5 is connected to the source of field-effect transistor V1. The source of field-effect transistor V4 is connected to one end of resistor R12 and one end of resistor R9. The other end of resistor R9 is connected to one end of resistor R11. The other end of resistor R11 is connected to one end of resistor R13 and the source of field-effect transistor V3. The gate of field-effect transistor V3 is connected to the other end of resistor R13, the other end of resistor R12, and the gate of field-effect transistor V4.

7. The lithium battery cable shearing device of claim 1, wherein, The DC motor V-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V6, the drain of field-effect transistor V8, one end of resistor R20, the gate of field-effect transistor V5, the drain of field-effect transistor V7, one end of resistor R21, and one end of capacitor C8, respectively; the drain of field-effect transistor V6 is connected to the drain of field-effect transistor V5; the source of field-effect transistor V6 is connected to one end of resistor R15 and the other end of resistor R20, respectively; and the other end of resistor R15 is connected to resistor R19. One end of the resistor is connected to the resistor R19, and the other end of the resistor R21 is connected to the source of the field-effect transistor V5. The source of the field-effect transistor V8 is connected to one end of the resistor R25 and one end of the resistor R23. The other end of the resistor R23 is connected to one end of the resistor R24. The other end of the resistor R24 ​​is connected to one end of the resistor R26 and the source of the field-effect transistor V7. The gate of the field-effect transistor V7 is connected to the other end of the resistor R26, the other end of the resistor R25, and the gate of the field-effect transistor V8.

8. The lithium battery cable cutting device according to claim 1, characterized in that, The DC motor W-phase winding drive circuit includes: the DC motor U-phase winding is connected to the gate of field-effect transistor V10, the drain of field-effect transistor V12, one end of resistor R37, the gate of field-effect transistor V9, the drain of field-effect transistor V11, one end of resistor R38, and one end of capacitor C14. The drain of field-effect transistor V10 is connected to the drain of field-effect transistor V9. The source of field-effect transistor V10 is connected to one end of resistor R35 and the other end of resistor R37. The other end of resistor R35 is connected to one end of resistor R36. The other end of resistor R36 is connected to the other end of resistor R38 and the field-effect transistor C14. The source of field-effect transistor V9 is connected to the source of field-effect transistor V12, which is connected to one end of resistor R42 and one end of resistor R39. The other end of resistor R39 is connected to one end of resistor R40. The other end of resistor R40 is connected to one end of resistor R44 and the source of field-effect transistor V11. The gate of field-effect transistor V11 is connected to the other end of resistor R44, the other end of resistor R42, the gate of field-effect transistor V12, one end of resistor R50, and one end of resistor R48. The other end of resistor R50 is connected to one end of capacitor C19, and the other end of capacitor C19 is connected to the other end of resistor R49.

9. The lithium battery cable cutting device according to claim 1, characterized in that, The device further includes a filtering circuit connected to the power management circuit. The filtering circuit includes: one end of resistor R27 connected to one end of capacitor C11 and one end of resistor R28; one end of resistor R30 connected to one end of capacitor C12 and one end of resistor R31; one end of resistor R33 connected to one end of capacitor C13 and one end of resistor R34; and the other end of resistor R28 connected to and grounded to the other ends of resistors R31, R34, C13, C12, and C11.

10. The lithium battery cable cutting device according to any one of claims 1 to 9, characterized in that, The device further includes a protection circuit, one end of which is connected to the output terminal of the power management circuit to monitor the power supply voltage in real time; the other end of which is connected to the input terminal of the DC motor controller, the input terminal of the DC motor U-phase winding drive circuit, the input terminal of the DC motor V-phase winding drive circuit, and the input terminal of the DC motor W-phase winding drive circuit to monitor the motor operating status.

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