780 results about "Current regulation" patented technology

The invention discloses an energy storage battery pack equalization control method, which belongs to the field of energy storage battery packs, and comprises the following steps: S1, constructing a multi-physics field-aging coupling model; s2, based on a multi-physical field-aging coupling model, space-time-frequency domain joint state estimation and unbalanced pattern recognition are realized; s3, formulating optimal equalization topology and control parameters according to space-time-frequency domain joint state estimation and an unbalanced mode recognition result; s4, establishing an electric-thermal-fluid multi-physics field coupling control model, and optimizing equalization current regulation and control, liquid cooling flow velocity and cooling fan rotating speed based on the optimal equalization topology and control parameters; and S5, optimizing the full life cycle of the digital twin drive. By adopting the equalization control method for the energy storage battery pack, the efficient coordination of the energy storage battery pack from dynamic modeling, accurate state estimation and intelligent equalization decision to full life cycle management is realized, and the equalization efficiency and the system reliability are remarkably improved.

The invention discloses a control method for improving the utilization rate of renewable energy sources in real time, particularly relates to the technical field of voltage collapse protection of a direct-current power distribution network, and is used for solving the problems of voltage collapse spreading and renewable energy source utilization rate reduction caused by photovoltaic sudden drop. The method comprises the following steps: monitoring photovoltaic output, bus voltage and load current in real time; predicting a voltage collapse spreading path; identifying an active migration source according to the time sequence difference between the voltage drop and the load current abrupt change; calculating a current increment upper limit of the active migration source cluster; generating a cross-region compensation instruction based on the current increment and the energy storage adjustable power; issuing a compensation instruction to the energy storage unit and synchronously locking the current regulation authority of the active migration source; through dynamic coupling of collapse path prediction and migration source identification, cooperative control of cross-regional power reverse compensation and local load behavior freezing is realized, voltage collapse chain propagation is blocked, and the photovoltaic local consumption rate is improved.

The invention discloses a new energy commercial vehicle fast charging working condition thermal management control method and system, and relates to the technical field of new energy vehicle thermal management and fast charging control, and the method comprises the following steps: collecting the temperature, voltage and current data of each subarea of a battery in a fast charging process, forming a time synchronization sequence, and based on the sequence, obtaining a new energy commercial vehicle fast charging condition; calculating internal thermal resistance and thermal capacity parameters of the battery in real time by using an online identification algorithm, updating a basic thermal model to obtain a corrected thermal dynamic model reflecting actual thermal characteristics of the current battery, importing the corrected model into a model prediction controller, constructing a multi-objective optimization function, and performing rolling solution in a prediction time domain to obtain a prediction model; and outputting an optimal target charging current instruction and a cooling total demand, adjusting the charging power according to the target current, and combining the temperature difference distribution of each partition. Accurate prediction and partition cooperative control of the thermal state of the battery in the fast charging process are achieved, the temperature rise and the temperature difference are effectively restrained while the charging efficiency is guaranteed, the service life of the battery is prolonged, and the system safety is improved.

Aiming at the stability problem caused by harmonic resonance of multiple parallel photovoltaic inverters, the invention provides a parallel inverter micro-grid-oriented adaptive virtual impedance remodeling harmonic resonance suppression method, which comprises a virtual impedance remodeling unit of a grid-connected inverter, a parameter adaptive adjustment unit and a power grid impedance online detection unit. The virtual impedance remodeling unit can improve the output impedance characteristic of the grid-connected inverter and inject a certain damping component into the micro-grid; and the parameter adaptive adjustment unit adaptively adjusts control parameters in the virtual impedance remodeling unit and the current adjustment controller according to the impedance parameters of the power grid so as to maintain the stability of a system control loop. The power grid impedance online detection unit provides power grid equivalent impedance as the input of the parameter adaptive adjustment unit. The three units work cooperatively to form a self-adaptive virtual impedance remodeling multi-inverter micro-grid harmonic resonance suppression strategy, so that the characteristics of a current loop are improved, the inverters can be kept stable under various grid impedance conditions, and the reliability of a multi-inverter micro-grid system is improved.

The invention discloses a current harmonic disturbance suppression method and suppression system for a permanent magnet synchronous motor. The method comprises the following steps: acquiring voltage and current signals of an electrical loop phasor test in the operation of the motor; an inductance identification algorithm based on high-frequency response is adopted, high-frequency excitation signals are injected, current response is monitored, and stator inductance parameters are calculated; constructing a multi-synchronous rotating coordinate system based on the parameter, and decomposing the current signal to obtain each harmonic current component; building a fuzzy full-order sliding mode observer, inputting an inductance parameter, voltage data and a harmonic current component, and dynamically adjusting a sliding mode surface parameter to observe the position and the rotating speed of a rotor; independently controlling each harmonic current adjusting channel under a multi-coordinate system in combination with observation information, and generating a compensation control signal; and the synthesized master control signal is output to the driving circuit. The system comprises six units, and the method and the system can accurately obtain parameters, efficiently decompose harmonic waves, accurately observe states, realize multi-frequency harmonic disturbance suppression, and improve motor operation stability and efficiency.

The invention relates to the technical field of charging piles, and provides a power factor correction method and system for a high-power charging module, and the method comprises the steps: obtaining a power grid input voltage, a power grid input current and an output load current, constructing an input power fluctuation map and a load dynamic response map, carrying out the subgraph matching and joint convolution, and obtaining a power factor correction result; and obtaining a response change index table and a fitting weight vector, generating a dynamic current regulation vector by using the response change index table and the fitting weight vector, and performing phase correction and waveform reconstruction on the power grid input current according to the dynamic current regulation vector. Through phase correction and waveform reconstruction, the amplitude and phase information of the power grid input current are strictly aligned, the power factor of the high-power charging module is improved, the harmonic interference of the input side is reduced, the electric energy transmission efficiency and the module operation stability are improved, and the problem that in a complex power grid environment, the power consumption of the high-power charging module is reduced is solved. The problem that the correction effect of the power factor is not stable due to the fact that fast-changing input current and voltage are difficult to deal with is solved.

The invention provides a power factor correction method and system for AC-DC conversion of a server power supply, and relates to the technical field of server power supplies, and the method comprises the steps: collecting an input AC signal and a DC bus output signal, calculating a real-time power factor value, constructing a compensation function based on the power factor value, and calculating a deviation value; and generating a compensation parameter matrix through recursive calculation, processing a direct current output signal by adopting an adaptive filtering algorithm, fusing the direct current output signal with the compensation parameter matrix, calculating to obtain a current adjusting signal and a duty ratio adjusting signal, and accurately adjusting a power factor.

The invention relates to a bridge tower component reinforcing steel bar intelligent hoisting control method, which belongs to the technical field of bridge construction, and comprises component reinforcing steel bar butt joint, and specifically comprises the following steps: S601, conical permanent magnet array modules are circumferentially embedded in the end surfaces of component reinforcing steel bars, and annular electromagnet array modules are correspondingly arranged on the end surfaces of embedded reinforcing steel bars; on the basis of the fusion parameter set in the step S2, obtaining the distance value between the embedded steel bar and the component steel bar, and then triggering an electromagnet to be powered on; s602, closed-loop feedback adjustment is conducted, the pose deviation and contact pressure of the component reinforcing steel bars and the embedded reinforcing steel bars are monitored in real time through a multi-mode sensing unit, and data are transmitted back to the edge computing nodes; and S603, electromagnetic parameter dynamic optimization is conducted, the current intensity of the annular electromagnet array is dynamically adjusted according to the pose deviation and the spacing value, and the magnetic attraction force is enhanced. Efficient and accurate butt joint of the component reinforcing steel bars and the embedded reinforcing steel bars is achieved through magnetic butt joint and dynamic current adjustment.

The invention relates to the technical field of motors, and discloses a high-temperature-resistant direct-current coreless gear motor and a test system, and the system comprises a temperature monitoring module, a current regulation and control module, a heat dissipation optimization module, a load response module, a cloud analysis module and a virtual verification module. By arranging the temperature monitoring module, multi-dimensional temperature data during operation of the motor can be acquired in real time, and a temperature distribution diagram can be generated, so that the system can comprehensively sense the internal thermal state of the motor and accurately identify local overheating risk points, thereby improving the operation reliability and safety of the motor under a high-temperature working condition; through cooperative operation and closed-loop control of the current regulation and control module, the heat dissipation optimization module and the load response module, according to real-time temperature and load changes, driving current parameters and heat dissipation resource distribution can be dynamically adjusted, and the heat dissipation efficiency is improved. And the output performance and the torque stability of the motor under high-temperature and high-load conditions are ensured.

A multipurpose wordline underdrive circuit includes a wordline driver and a pulldown network. The pulldown network includes a first current-carrying terminal electrically coupled to the wordline driver and a second current-carrying terminal electrically coupled to a control signal. The pulldown network also includes a current-regulation terminal electrically coupled to an additional control signal. Various other devices, systems, and methods are also disclosed.

The invention discloses a circuit breaker integrated with an adjustable hydraulic release. The circuit breaker comprises a circuit breaker body, wherein the adjustable hydraulic release, a release transmission mechanism and a main contact system are arranged in the circuit breaker body. The adjustable hydraulic release comprises a release body and an intelligent control module; the tripper body is provided with an oil cup, an oil cup iron core capable of axially moving, a pole shoe, a first coil and an armature, and the armature is linked with the tripping transmission mechanism. When the first coil is electrified, a first electromagnetic force is generated to push the oil cup iron core to move towards the pole shoe and finally attract the armature to trigger a tripping action so as to break a circuit. The intelligent control module is located at the end of the oil cup and can generate second electromagnetic force in the same direction or reverse direction as the first electromagnetic force to act on the oil cup iron core, and rated current adjustment and overload protection adjustment are achieved. According to the design, the problem that the protection characteristic of a traditional hydraulic electromagnetic release is fixed is solved, the number of synthesized ampere turns is equivalently changed through controllable second electromagnetic force, the rated current is flexibly adjusted, and the requirements of different devices are met.

The invention discloses an adjustable oil damping electromagnetic release applied to a circuit breaker, and belongs to the technical field of release. Comprising an oil cup, an oil cup iron core capable of moving in the axial direction, a pole shoe arranged at the end of the oil cup and a first coil wound around the outer wall of the oil cup, and when the first coil is powered on, first electromagnetic force driving the oil cup iron core to move towards the pole shoe is generated; and the intelligent control module is arranged at the end part of the oil cup and is used for outputting controllable direct current to generate second electromagnetic force in the same direction or opposite direction as the first electromagnetic force, and the release has a rated current adjusting function and an overload protection adjusting function by adjusting the magnitude and the direction of the second electromagnetic force. The controllable second electromagnetic force is introduced into a traditional oil damping electromagnetic release, the rated current specification can be adjusted, the release action time can be adjusted, the advantage that the temperature stability of the oil damping release is good is reserved, and meanwhile the defect that the protection characteristic of the oil damping release cannot be adjusted is overcome.

The invention belongs to the technical field of electronic information, and provides a method for optimizing the stability of a photoelectric information conversion assembly in a severe environment, which comprises the step of optimizing the stability of the photoelectric information conversion assembly in the severe environment. The method comprises the following steps of: synchronously acquiring environment parameters such as temperature, humidity and illumination and equipment current data in a high-temperature and high-humidity environment to construct a multi-dimensional time sequence group; analyzing the coupling degree of each environment parameter and the current sequence, and after locking the high coupling relationship between illumination and current, judging whether the current response has delay or not when the illumination suddenly changes; if the delay exists, further analyzing the current response sensitivity, if the sensitivity deviates from expectation, constructing an illumination-current prediction model, and calculating the current regulation quantity in advance by predicting the illumination abrupt change amplitude to realize pre-regulation; and finally, collecting the adjusted data iteration optimization model, and improving the dynamic response performance and stability of the assembly in a complex environment.

The invention discloses a servo system control method based on frequency domain self-tuning and linear active disturbance rejection, and relates to the technical field of servo control and motor control. Comprising the following steps: based on a mathematical model of a permanent magnet synchronous motor, establishing a double-inertia model suitable for a large-inertia servo system, and constructing an equivalent mathematical expression of an electrical and mechanical transmission system; in a three-stage cascade control architecture composed of a current loop, a speed loop and a position loop, the current loop is used for current adjustment, the speed loop is used for dynamic response adjustment, and the position loop is used for displacement target tracking. Based on a frequency domain performance index and a rule method, PI controller parameters of a speed loop and a position loop are set respectively, and the frequency domain index comprises an open-loop cut-off frequency and a phase margin; and establishing a frequency domain equivalent mapping relation between the PI controller and the LADRC controller. The method has the advantages that the method does not depend on accurate modeling and manual interference, automatic parameter setting can be achieved, non-overshoot dynamic response is achieved, and the remarkable disturbance suppression capacity is shown.

The invention discloses a driving control method, a driving control circuit and electronic equipment. The driving control method comprises the following steps: acquiring a power supply output voltage, an energy storage characteristic voltage and an energy storage characteristic current in an energy storage compensation circuit; performing first filtering processing on the power supply output voltage to obtain a target output voltage; obtaining a feedback regulation output value by using the target output voltage and the power supply output voltage; obtaining an energy storage adjustment output value by using the target energy storage voltage and the energy storage characteristic voltage; obtaining a voltage regulation output value by using the feedback regulation output value and the energy storage regulation output value; obtaining a current regulation output value by using the energy storage characteristic current and the voltage regulation output value; generating a driving control signal by using the current regulation output value; and the driving control signal is sent to the energy storage compensation circuit so as to adjust the power supply output voltage. According to the driving control method, the time delay of dynamic compensation of the power supply output of the energy storage compensation circuit is short, the response is quicker, and the structure is simpler.

The invention provides an anti-over-temperature protection method and system for a battery of a two-wheeled vehicle of a battery changing cabinet in the technical field of battery safety management of the battery changing cabinet. The method comprises the following steps: S1, setting a threshold parameter; s2, collecting the temperature value and the real-time SOC of each battery in the charging process, and calculating the temperature rise rate; s3, when the temperature value is smaller than the temperature early warning value and the temperature rise rate is smaller than or equal to a first temperature rise rate threshold value, a minute-level monitoring mode is triggered; s4, when the temperature value is larger than or equal to the temperature early warning value or the temperature rise rate is larger than a second temperature rise rate threshold value, a second-level monitoring mode is triggered, and the initial charging current is adjusted based on a three-level current regulation and control strategy; s5, performing current recovery operation on the reduced charging current; s6, executing fusing protection based on the triggering times of the three-level current regulation and control strategy; and S7, when the real-time SOC reaches the SOC upper limit, stopping charging of the battery. The power conversion cabinet has the advantage that the charging safety of the power conversion cabinet is greatly improved.

The invention discloses a condenser dynamic heat exchange regulation and control method and system based on multi-dimensional perception and AI, and relates to the technical field of intelligent heat exchange regulation and control. The condenser dynamic heat exchange regulation and control method and system based on multi-dimensional perception and AI comprises the steps that S1, condenser heat exchange perception data are collected and preprocessed; s2, performing two rounds of data screening on the sampling points, realizing emergency regulation and control instruction issuing and abnormal point data processing, and constructing an effective condenser operation data set; s3, the heat exchange adaptation degree of the condenser is evaluated, the load state category is recognized, and a regulation and control instruction is output; and S4, the regulation and control instruction is executed, execution feedback data is collected, the heat exchange execution performance of the condenser is evaluated, whether the current regulation and control instruction needs to be adjusted or not is judged based on the evaluation result, and the execution feedback data and the evaluation result are returned for threshold value updating and regulation and control strategy optimization. The problems that due to fixed heat exchange control of the condenser, phase change is limited under load change, and energy consumption is too high are solved.

In order to solve the technical problems that an existing wireless communication system based on magnetic coupling needs to be additionally provided with a foreign matter detection unit, so that the system is complex, the cost is high, the dynamic adjustment capability is lacked and the anti-interference performance is poor, the invention provides a wireless communication system and method with foreign matter detection and anti-interference functions. Impedance data of the transmitting coil module are used for foreign matter detection, detected foreign matter distribution information is coded into binary codes to be embedded into communication frames to be transmitted together with the communication frames, and data interaction delay among functional units is eliminated; the working mode switching module predicts the working mode of the wireless communication system at the next moment in real time based on the detected foreign matter distribution data, the actually measured energy efficiency ratio and the channel quality data, and triggers the current regulation and control unit to perform cooperative control on each coil unit of the transmitting coil module when the anti-interference mode needs to be started. And foreign matter detection and efficient information anti-interference transmission are synchronously realized.

The utility model discloses an intelligent constant current LED drive circuit, which relates to the technical field of LEDs, and comprises a power supply module used for power supply control; the power supply control module is used for electric energy transmission and power-off protection; the constant-current driving module is used for carrying out constant-current adjustment processing; the first LED module is used for lighting and current sampling; the second LED module is used for lighting and current sampling; the feedback control module is used for transmitting a signal sampled by the first LED module or the second LED module to the constant current driving module; and the fault detection module is used for carrying out overcurrent detection on the first LED module and the second LED module, controlling the power-off work of the power supply control module, controlling the standby illumination work of the standby LED module, controlling the power-off work of the first LED module and controlling the signal switching work of the feedback control module. The intelligent constant-current LED drive circuit can improve the lighting efficiency and the circuit safety.

The invention discloses an energy storage power station-oriented battery aging sensing self-adaptive charging and discharging control method and system, and relates to the technical field of electric energy storage. The energy storage power station battery aging sensing self-adaptive charging and discharging control method comprises the following steps: S1, collecting battery working condition physical data, and preprocessing the battery working condition physical data; s2, acquiring a health attenuation factor, evaluating the health state of the battery, judging the health level of the battery based on an evaluation result, and generating a health level label; s3, evaluating the charging and discharging regulation and control capability of each battery, calculating a target charging and discharging current, generating a current instruction set, and implementing a current regulation task; and S4, evaluating the matching degree of the current adjustment strategy and the battery state after each round of current adjustment, and dynamically adjusting the target current. The problems that a traditional energy storage power station lacks a real-time identification and differentiation control mechanism for the aging state of the battery, and system capacity attenuation and thermal potential safety hazards are likely to be caused are solved.

System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current regulation circuit coupled to a cathode of one or more light emitting diodes. The one or more light emitting diodes include the cathode and an anode configured to receive a rectified voltage. Additionally, the system includes a control circuit coupled to the cathode of the one or more light emitting diodes. The control circuit is configured to receive a first voltage from the cathode of the one or more light emitting diodes, compare a second voltage and a threshold voltage, and generate a control signal based at least in part on the second voltage and the threshold voltage. The second voltage indicates a magnitude of the first voltage.

The invention belongs to the technical field of off-grid inverter and battery management, and particularly relates to an off-grid inverter battery protection and charging control method and system based on impedance detection, and the method comprises the steps: collecting battery input parameters under two different load working conditions: no-load or light-load and on-load conditions; an Ohm law analytical algorithm is adopted, a corresponding relation model of the lithium battery remaining capacity SOC and the battery internal resistance is preset, the current actual internal resistance of the battery is obtained, the preset SOC-internal resistance corresponding relation model is input, and the current SOC value of the battery is obtained through reverse deduction; an inverter charging current adjusting threshold value is set in a grading mode, and a multi-dimensional risk early warning threshold value is set in a grading mode; and when the monitored numerical value exceeds a correspondingly set risk early warning threshold value, triggering a risk early warning signal of a corresponding grade and a matched disposal action, and carrying out full-process management and control of battery state real-time monitoring, charging current self-adaptive adjustment and risk early warning. Therefore, the problems of short service life, poor charging safety and the like of the battery in the prior art are solved.

The invention relates to a thermodynamic design method for distributed overhead ground wire alternating current ice melting, and belongs to the technical field of power transmission line ice melting. The method aims at solving the problems that an existing ice melting technology is high in power consumption, low in efficiency, difficult in equipment movement and lack of fine design of a current regulation and control strategy. The core of the technical scheme is that a thermal equivalent theoretical model and an electric heat flow coupling simulation model of the overhead ground wire are established, key thresholds such as wire protection current, critical ice melting current and maximum allowable current are determined through calculation, and an effective value of alternating current injected into the ground wire is flexibly adjusted by using a reactive power compensation device. According to the method, segmented ice melting according to needs can be achieved, energy consumption is remarkably reduced, the ice melting efficiency and safety are improved, and the needed device is small in size, convenient to move and deploy and suitable for various complex icing working conditions.

The invention discloses a material flow collaborative distribution system for a double-color injection mold of an automobile connector, relates to the technical field of intelligent manufacturing equipment, and can solve the technical problems of inaccurate regulation and control in the injection molding process and easy generation of a bonding line defect, and the material flow collaborative distribution system comprises the following steps: obtaining production monitoring data in the production process of the double-color injection mold; according to time sequence monitoring parameters in the production monitoring data, abnormal data generated by temporary interference are identified and eliminated, and abnormal state parameters are obtained; wherein the abnormal state parameter is used for representing a real process abnormal state after the temporary interference is eliminated; according to the abnormal state parameter, screening out a historical similar state similar to the current production process from the historical production monitoring data, and determining the interference degree on the defect of the bonding line in the current production process according to the historical similar state; determining a current regulation and control demand according to the interference degree; and a regulation and control instruction is generated according to the current regulation and control requirement, and an execution mechanism is driven according to the regulation and control instruction to adjust the melt propelling speed.

The invention discloses an automatic load reduction control system for a charging pile, and relates to the technical field of new energy automobile charging. In order to solve the problems of easy overload, dependence on manual adjustment, low voltage detection precision, weak interference resistance and the like when an existing charging pile adapts to different power supply standards, the system comprises a voltage detection module, a main control module, a current adjustment module and a current detection module. The voltage detection module balances the sampling precision through a differential voltage-dividing current-limiting resistance network, and filters high-frequency noise in combination with a filter circuit; a metering chip of the main control module identifies the voltage grade and outputs a current control instruction; the current adjusting module responds to an instruction to adjust output current, and the current detection module realizes accurate feedback through differential sampling and symmetric filtering to form closed-loop control. According to the invention, automatic voltage grade identification, dynamic current adjustment, improvement of anti-interference capability and sampling precision and avoidance of overload risk are realized, and the operation is simple and convenient.

A power factor correction (PFC) control circuit includes a pulse-width modulation (PWM) circuit configured to control a switch of a switching power converter. The PFC control circuit further includes a mode control circuit configured to select a conduction mode from a plurality of conduction modes for the switching power converter based at least in part on an output power of the switching power converter and to control a beginning of a switching cycle of the switching power converter based on the selected conduction mode. In addition, the PFC control circuit includes a current regulation circuit configured to provide a regulation signal to the PWM circuit to regulate an average coil current of the switching power converter in each of the plurality of conduction modes.

The invention provides an oxidation method of porous silicon, and relates to the technical field of material treatment. The method comprises the following steps: obtaining porous silicon; and performing electrochemical oxidation treatment on the porous silicon through a dynamic current regulation and control process to obtain the oxidized porous silicon. According to the method, electrochemical oxidation treatment is carried out on the porous silicon through a dynamic current regulation and control process, so that an oxidation cut-off phenomenon can be avoided, the porous silicon can obtain a uniform and thorough passivation effect, and the problems of non-uniform porous silicon oxidation and incomplete local passivation in traditional constant-current / constant-voltage electrochemical oxidation are solved.

The invention discloses an energy storage converter grid-connected and off-grid seamless switching control method based on current droop control, and the method comprises the steps: taking an active current and a reactive current as the droop amount, and adjusting the amplitude of the output voltage of an energy storage converter through the active current under the condition of a resistive line of a low-voltage power distribution network; the output voltage angular frequency of the energy storage converter is adjusted by using the reactive current, so that the control complexity is reduced, the dynamic performance and the steady-state precision are good, and the grid-connected and off-grid seamless switching of the energy storage converter can be realized; therefore, the technical defects that an energy storage converter PQ / VF dual-mode control algorithm is complex, voltage and current are uncontrollable in the mode switching process, and dynamic response of power droop control is slow are overcome, and safe and stable power supply to important loads is guaranteed.

The invention provides a driving circuit of a high-side switching tube, and the driving circuit of the high-side switching tube comprises a pull-up unit which carries out the pull-up of a grid potential of the high-side switching tube through a first current when a control signal is effective; the second pull-down unit is used for carrying out pull-down on the grid potential of the high-side switching tube by utilizing second current when the control signal is invalid; the pull-up unit further adjusts the first current according to the first current adjusting signal so as to adjust the starting speed of the high-side switching tube, and therefore slow starting of the high-side switching tube is achieved. According to the driving scheme of the high-side switching tube, the structure is simple, slow switching-on and switching-off of the high-side switching tube can be achieved, mistaken switching-on of the high-side switching tube can be avoided when the voltage of the input end is subjected to rapid step, and it can be ensured that no reverse current flows back to a driving circuit power source when the voltage of the output end is higher than the voltage of the input end.

The utility model discloses a leakage current detection type PCBA test circuit and equipment. The leakage current detection type PCBA test circuit comprises a test current signal output unit, a test voltage signal output unit and a test result signal output unit, the test current signal output unit is used for outputting a leakage current detection current signal; the test current signal output unit is provided with a current adjusting circuit, and the current adjusting circuit is used for adjusting the value of the leakage current detection current signal. The test voltage signal output unit is used for outputting a leakage current detection voltage signal; the test voltage signal output unit is provided with a voltage adjusting circuit, and the voltage adjusting circuit is used for adjusting the value of the leakage current detection voltage signal. The leakage current detection current signal and the leakage current detection voltage signal are used for being loaded to a PCBA to be detected; when the PCBA receives the leakage current detection current signal and the leakage current detection voltage signal, a leakage current protection signal is output; the test result output unit is configured to output a test result signal when the leakage current protection signal is received.