1204 results about "Electrical isolation" patented technology

The invention provides a multi-dimensional electrical equipment insulation analysis and evaluation method, and relates to the technical field of electrical equipment insulation online detection and intelligent diagnosis. According to the method, an electrically isolated direct current detection channel is constructed in a neutral point small resistance grounding system, controllable direct current detection signals are injected, micro direct current leakage response signals are collected, and after zero drift correction, temperature compensation and power frequency ripple suppression are carried out, layered attribution is carried out in combination with primary system topology and an equipment ledger, and a multi-dimensional response matrix is formed. According to the method, environment and working condition normalization is realized through factor rejection and robust pull-back, a mechanism model containing leakage channel equivalent parameters and path constraints is established, multi-working-condition data is fused to calculate equivalent insulation parameters and credibility indication quantity, and a multi-dimensional insulation representation vector is generated. And performing time sequence analysis on the representation vector, extracting degradation and abrupt change characteristics, outputting a health index and a risk level, and realizing quantitative evaluation and intelligent early warning of the insulation state.

An electrical transmission safety system for connection of direct current (DC) power from a DC power source to a load comprises: a connection from the power source to the load, the connection comprising a positive terminal and a negative terminal; a first solid state switch electrically connected between the power source and one of the positive terminal and negative terminal; and a switch-control isolation block comprising a first optocoupler, the first optocoupler providing electrical isolation from the power source for generating a first isolated switch-control signal in response to a switch-control input signal, the switch-control isolation block connected to provide the first isolated switch-control signal to the first solid state switch to thereby control an ON or OFF conduction state of the first solid state switch and corresponding current flow between the power source and the load through the one of the positive terminal and negative terminal.

The invention provides a direct-current group charging control system and a power switching method thereof, and relates to the technical field of electric vehicle charging, and the control system comprises a data interaction controller, a charging module group, a switch module group, a plurality of charging terminals, a direct-current loop module and a direct-current loop controller. According to the method, a data interaction controller controls a switch module group to realize'full matrix 'type dynamic connection between any charging module and any charging terminal according to the real-time requirement of each terminal, and an idle terminal is electrically isolated by combining a direct current loop module; and power switching is carried out by adopting safety strategies such as double-threshold hysteresis control, voltage pre-synchronization and zero-current breaking. According to the invention, the problems of inflexible power scheduling and insufficient idle terminal safety of the existing group charging system are solved, safe, efficient, stable and dynamic distribution of the charging power in a global range is realized, and the utilization rate and the operation safety of the system are improved.

The invention discloses a high-temperature-resistant flame-retardant carbon fiber cable and an intelligent preparation method thereof, and relates to the technical field of power cables, and the cable is composed of a composite bearing core, a first / second electrical isolation belt, a stranded conductor, an annular composite bearing layer, a high-temperature-resistant main insulator and a low-smoke halogen-free outer sheath. The force bearing core is formed by bundling carbon fiber micro rods, elastic reset layers are arranged between the micro rods, micro-particle friction layers are formed on the outer surfaces of the micro rods, and a stable friction-rebound interface is constructed. A fire-resistant barrier, a phase change microcapsule filling layer and a fiber bragg grating can be arranged, and fire resistance, thermal peak suppression and on-line monitoring are considered. And closed-loop control of pultrusion, surface activation, coating and on-line thickness measurement / friction test is carried out in the manufacturing process. The cable can be operated at 200 DEG C for a long time and at 250 DEG C for a short time, the residual elongation is less than or equal to 0.10%, and light weight, high strength, high temperature resistance, low smoke and flame retardance are realized.

The embodiment of the invention provides a transformer bushing oil extraction tool system and a control method and device thereof, and the system comprises a multi-degree-of-freedom flexible positioning module, a real-time data collection and feedback control module, an electrical isolation and insulation module, and an intelligent alarm system. Automatic operation of oil extraction of the transformer bushing in an electrified environment can be achieved, the accuracy, the sealing performance and the safety of the oil extraction process are ensured, and the efficiency and the reliability of equipment maintenance are improved. Wherein the flexible positioning module enables the oil taking module to be accurately in butt joint with an oil taking port, the data acquisition and feedback control module monitors and adjusts pressure and flow in real time, and the stability of oil taking is ensured; the electrical isolation module provides necessary insulation protection to avoid high-voltage risks; and the alarm system automatically gives an alarm and stops operation when abnormity occurs, so that multi-layer safety guarantee is provided for system operation.

The invention discloses a preparation method and a structure of a photonic integrated device, and the method comprises the steps: sequentially dividing a substrate into a front modulator region, a rear modulator region, a front grating region, a gain region and a rear grating region, and growing a first active layer after manufacturing a selected region epitaxial mask pattern in the gain region, the method comprises the following steps of: growing a first active layer in a front modulator region after mask etching operation, growing a second active layer in a front modulator region after mask etching operation, growing a third active layer in a grating region after mask etching operation, finally performing grating manufacturing, and completing manufacturing of a cladding layer, an electric contact layer, an inverted table shallow ridge waveguide structure, an electric isolation trench and an electrode. According to the method, integration of multiple materials is achieved through one-time selective area epitaxial growth and one-time butt joint growth, the material growth frequency is reduced, and the manufacturing cost is saved; the gain region and the rear modulator region realize forbidden band width offset through selective region epitaxial material growth, and multi-wavelength tuning and efficient modulation are realized through fluorescence wavelength difference design of each region, so that a solution can be provided for integration of a wide-wavelength tunable laser and a double-electro-absorption modulator.

The invention relates to the technical field of air purification, and discloses a negative oxygen ion generator and a method thereof.The negative oxygen ion generator comprises an external shell used for providing installation positions for related parts; the power supply input module is mounted in the external shell, is internally provided with a filtering unit, and is used for receiving external direct current; the direct current and alternating current inversion module is electrically connected with the output end of the power supply input module, is internally provided with a switch assembly and is used for converting the direct current into high-frequency alternating current; a primary winding, a secondary winding and a feedback winding are arranged in the boosting transformer. A boosting transformer is arranged between a direct current and alternating current inversion module and a high-voltage double-voltage rectification module, so that the voltage is effectively boosted, more importantly, the magnetic field coupling characteristics of a primary winding and a secondary winding are utilized, reliable electrical isolation is constructed, and a physical path from a high-voltage side circuit to a low-voltage side circuit is blocked.

The invention provides a triaxial accelerometer based on a four-degree-of-freedom weak coupling resonator, the triaxial accelerometer comprises an upper-layer structure and a lower-layer structure, the upper layer is a micromechanical sensitive element constructed by taking silicon as a material, the lower layer is a glass base processed by a silicon dioxide material, and the glass base is used for providing mechanical support and electrical isolation functions. Wherein the micromechanical sensitive element has a signal conversion function; and the lower-layer glass base is formed by wet etching and metal sputtering processes and is used for signal output. On the basis of collaborative design of the orthogonally distributed resonance unit array and the mechanical amplification mechanism, electrostatic driving and amplitude ratio detection are combined, synchronous and accurate sensing of acceleration of the Y axis, the X axis and the Z axis is achieved through a single sensitive element, the technical limitation of a traditional single-axis detection mode is broken through, the complexity of a rear-end signal processing circuit is reduced, and the detection precision is improved. The device space utilization rate is improved.

The utility model relates to an MCU simulation debugger with high-voltage isolation protection. The MCU simulation debugger comprises a USB power supply communication circuit module, a first DC step-down circuit, a DC-DC power isolation module, a second DC step-down circuit, a main control chip minimum system, a burning code external storage FLASH control circuit, an off-line burning BURN key detection circuit, a JTAG simulation / IIC burning interface isolation module and a three-section dial switch. A dial switch state detection module; and a machine burning control interface. The JTAG simulation / IIC burning interface isolation module realizes 1500Vrms electrical isolation of a debugging board card and simulator equipment, online simulation debugging of resistance product firmware can be realized, and a software developer does not need to care about the electrical isolation condition of the debugging board card and only needs to concentrate on debugging codes; multi-interface and multi-level high-speed simulation and burning are supported, level switching of a debugging board card is rapidly achieved through a dial-up gear, and the level compatibility of the simulator is improved.

The invention provides an intelligent crust breaking and blanking system based on machine vision. The intelligent crust breaking and blanking system comprises an active detection module, an image acquisition module, an image processing and calculating module, a data communication module, a cell control machine, a high-temperature-resistant insulation structure and a cooling device, the active detection module forms a reference line in an aluminum electrolysis cell monitoring area; the image acquisition module is used for respectively acquiring image data of a motion state of a crust breaking hammer and a material falling process of a blanking port; the image processing and calculating module is used for carrying out preprocessing, feature extraction and calculation on the image to obtain a crust breaking depth parameter and blanking flow data; the data communication module transmits a processing result to the cell control machine, and the cell control machine adjusts the crust breaking set depth and optimizes the blanking interval according to the processing result; the high-temperature-resistant insulation structure carries out physical protection and electrical isolation on key modules, and the cooling device keeps the internal temperature stable and prevents the lens from being polluted. Therefore, the crust breaking depth and the blanking quantity control precision can be improved, the maintenance cost is reduced, and the adaptability to a high-temperature strong electric field environment is improved.

The invention discloses a vehicle-mounted CAN bus anti-interference communication system and method based on photocoupling, and the system comprises an anti-interference communication system frame, the anti-interference communication system frame comprises a CAN bus receiving and transmitting module, a photocoupling isolation module, and a signal processing and separating module, the CAN bus receiving and transmitting module is used for receiving and transmitting CAN bus signals, and the photocoupling isolation module is used for receiving and transmitting the CAN bus signals. The photoelectric coupling isolation module is used for realizing transparent conversion of data between an optical signal and an electric signal and realizing electrical isolation of a physical layer while maintaining the integrity of a CAN protocol, and the signal processing and separation module is used for constructing a cooperative processing mechanism of time sequence calibration, differential judgment, logic reconstruction and signal synthesis. According to the invention, based on a physical layer signal isolation mechanism of optoelectronic isolation, a bidirectional independent transmission path of a CAN bus TXD / RXD channel data stream is established, and TXD mapping data and CAN bus effective data in an RXD channel are accurately separated, so that the system reliability in an industrial-grade communication scene can be obviously improved.

The invention discloses a packaging substrate with a temperature detection function, a power semiconductor module and a manufacturing method thereof, and the packaging substrate with the temperature detection function comprises an integrated ceramic insulating layer which is provided with a first surface and a second surface which are opposite to each other; the temperature sensor comprises a ceramic insulating layer, a sensor mounting groove, an independent temperature sensor chip, an insulating filling body and a three-dimensional interconnection structure, and is configured to lead an electric signal of the temperature sensor chip to an external bonding pad on the second surface or the side surface of the ceramic insulating layer, the packaging substrate has the advantages that high-precision and quick response measurement of junction temperature of a power chip can be achieved, temperature rise decoupling deviation is eliminated, excellent high-voltage electrical isolation reliability is ensured while direct thermal coupling is achieved, the dielectric breakdown risk is avoided, the manufacturing method is flexible, the reliability of a power semiconductor module is improved, and the manufacturing cost is reduced. The comprehensive cost is reduced, and the long-term stability of temperature monitoring can be ensured while the rapid and accurate electrothermal response characteristic of the sensing unit is ensured.

The invention discloses a voltage and current synchronous measurement method for a high-voltage power supply of a fusion device, which is suitable for accurately sampling and monitoring voltage and current signals of each key node of the high-voltage power supply of the fusion device. According to the method, firstly, a resistance-capacitance voltage division technology is adopted, a front-end high-voltage attenuation network is constructed by utilizing high-precision resistors and capacitors, and stable voltage division and linear attenuation of high-voltage signals are achieved; then, electrical isolation is realized through a small-signal voltage and current transformer, and multi-channel synchronous acquisition of voltage and current signals is completed respectively. Then, the ADC module adopts two multi-channel AC sampling special electric energy metering chips to realize ten-channel synchronous acquisition of high voltage and current signals. And finally, the FPGA receives, processes and analyzes the acquired data in real time, and transmits a result to an upper computer monitoring platform. According to the method, the synchronism, the precision and the anti-interference performance of a fusion power supply high-voltage measurement system are remarkably improved, and reliable data support is provided for safe and stable operation of a fusion device.

A system includes a plurality of power modules connected in parallel and a variable current load controller coupled to the plurality of power modules. The input terminals of the plurality of power modules are configured to be coupled to an output of a fuel cell stack, and the output terminals of the plurality of power modules are configured to supply power to a forklift. The plurality of power modules is further configured to provide electrical isolation between the fuel cell stack and the forklift. The variable current load controller is configured to regulate power distribution among the plurality of power modules.

Provided in the present disclosure is a ring main unit (500). The ring main unit (500) comprises a gas tank (100), a fixed frame (1) fixed to an inner side wall of the gas tank, and a circuit breaker switch (2) and a three-position switch (3) that are located in the gas tank (100). Embedded poles (21) of the circuit breaker switch (2) each comprise a pole body (211), and a moving-end shielding seat (212) and a fixed-end shielding seat (213) that are located at two ends of the pole body (211), wherein the moving-end shielding seat (212) and the fixed-end shielding seat (213) can respectively cover the two ends of the pole body (211), thereby electrically isolating an electrical connection position of the pole body (211) from the external environment. The pole body (211), the moving-end shielding seat (212) and the fixed-end shielding seat (213) are cast into a whole by means of an insulating resin, thereby improving the consistency of the poles. A grounding shielding seat (33) is made of an integrally formed metal member, such that a plurality of grounding contacts (32) can be uniformly enclosed within a shielding space (301), thereby optimizing the electric field distribution of the grounding contacts. The ring main unit (500) disclosed in the present application can not only use dry air as an insulating gas, but also achieves the miniaturization of the ring main unit (500) and satisfies the corresponding insulation performance.

The invention discloses a thermal management hierarchical linkage safety control method for an energy storage loop, and relates to the technical field of safety control of an electric energy storage system, and the method comprises the steps: an energy storage loop control system continuously and synchronously monitors a multi-dimensional operation state parameter set of an energy storage battery plug-in box in a battery module in the energy storage loop, the method comprises the following steps: constructing an operation feature vector of an energy storage battery subrack, performing correlation analysis processing on the operation feature vector to obtain abnormal state judgment information, performing abnormal state evolution analysis on the operation feature vector according to the abnormal state judgment information to obtain a thermal runaway risk identifier, and performing hierarchical coordination control on a battery module. And after the hierarchical coordination control is executed, continuously monitoring the operation feature vector, generating an out-of-control signal of the battery module, then executing electrical isolation processing on an energy storage loop corresponding to the battery module, and executing directional immersion processing according to the active fire-fighting logic after the electrical isolation processing is executed. The thermal runaway diffusion probability is effectively reduced, and the overall operation safety of the energy storage system is improved.

The invention provides an application method of a composite conductive copper foil, and relates to the technical field of manufacturing of liquid crystal display modules, and the application method comprises the following steps: coating a transparent PET (Polyethylene Terephthalate) bottom film at a position, corresponding to a connector, of the back surface of the composite conductive copper foil, the thickness of the transparent PET bottom film is 0.03 mm, and the transparent PET bottom film forms closed coverage in a connector area so as to prevent dust and water vapor from entering the connector area; an insulating green high-temperature adhesive tape is coated on the back of the composite conductive copper foil at a position corresponding to the FPC element area, and the thickness of the insulating green high-temperature adhesive tape is 0.03 mm. According to the application method of the composite conductive copper foil, the conductivity and the insulating property of the composite conductive copper foil are stably guaranteed through an accurate coating process and windowing treatment. Strict thickness control and uniform pressure application are adopted in the coating process of the transparent PET bottom film and the insulating green high-temperature adhesive tape, so that good adhesion and electrical isolation are ensured, and short circuit or electrical interference is avoided.

The invention discloses a CAN bus activity detection and wake-up circuit and method, and belongs to the technical field of CAN bus communication, the CAN bus activity detection and wake-up circuit comprises a CAN bus interface circuit, a signal detection and processing circuit and a controller, the input end of the CAN bus interface circuit is connected with a CAN bus; the signal detecting and processing circuit comprises a voltage comparator, the non-inverting input end and the inverting input end of the voltage comparator respectively receive a CANH signal and a CANL signal which are electrically isolated by the CAN bus interface circuit, and the output end of the voltage comparator is connected to a wake-up pin of the controller; the controller is used for monitoring the level state of the wake-up pin, and when the level of the wake-up pin is in an effective state, the electronic equipment is controlled to be switched from the sleep mode to the normal working mode. By introducing an electrical isolation and voltage difference detection mechanism, the problem of false wake-up caused by common-mode interference or bus noise in the prior art is solved, and reliable wake-up under low power consumption is realized.

The invention discloses a time interference double-target electrical stimulation system, which comprises a signal generation unit used for generating multiple paths of carrier signals and adjusting the frequency, amplitude and / or phase of the carrier signals; the current output unit is used for converting the multiple paths of carrier signals into multiple paths of carrier currents, and electrical isolation and intermodulation suppression are provided between the multiple paths of carrier currents; the electrode unit is electrically connected with the current output unit and comprises a plurality of electrodes and a position subunit, the plurality of electrodes are used for receiving the multi-channel carrier current so as to discharge in an attached target area, and the position subunit is used for determining the attaching position of each electrode; and the control unit is used for controlling the discharge of the plurality of electrodes, detecting the impedance and carrier current at the plurality of electrodes to assist the position subunit in determining the fitting position and detecting the frequency and / or phase of the plurality of carrier current to control the signal generation unit to adjust the frequency and / or phase of each path of carrier signal. The system realizes independent stimulation of two target spots in a hardware-level time interference mode, has signal output with high stability and low mutual interference, and can perform real-time feedback regulation and safety protection.

The invention provides an intermediate-frequency electrotherapy waveform control method and device, electronic equipment and a medium, and the method comprises the steps: determining a treatment waveform signal at the current moment according to a treatment parameter set by a user and an adjustment signal at the current moment, and enabling the adjustment signal to be used for adjusting the amplitude of the treatment waveform signal; determining a treatment current generated after performing power amplification and electrical isolation on the treatment waveform signal at the current moment, outputting the treatment current to a treatment electrode through an electrical isolation circuit, and simultaneously collecting a current signal flowing through the treatment electrode so as to extract a characteristic value representing the magnitude of the output current from the current signal; and determining an adjusting signal at the next moment according to the characteristic value and the target current value. According to the invention, the treatment current acting on the human body can be kept constant under the conditions of load impedance change and complex modulation, the fluctuation and overshoot of the output current are effectively avoided, the treatment somatosensory and safety are optimized, and the overall precision and response speed of system control are improved at the same time.

The invention discloses a preparation method and structure of a tunable laser, and the method comprises the steps: carrying out the surface layout of a substrate, and sequentially dividing the substrate into a front gain region, a front phase region, a common grating region, a rear phase region and a rear gain region; growing an active layer, manufacturing a butt-joint mask pattern in the gain region, etching to remove the active layer in the common grating region and the phase region, performing butt-joint growth of a passive layer, removing a mask, manufacturing a grating in the common grating region, and growing a cladding and an electric contact layer; manufacturing an inverted table shallow ridge waveguide structure, and etching an electrical isolation trench; and a cantilever arm structure is manufactured and formed in the common grating area, a titanium-platinum heating resistor, a grating electrode and a grounding electrode are manufactured, and the tunable laser is obtained after preparation of a P-surface electrode and an N-surface electrode is completed. The back-to-back double lasers share the thermal tuning grating, double-end light emitting and wavelength synchronous control are achieved, the cantilever arm structure of the grating ridge waveguide is manufactured, energy consumption of wavelength tuning is reduced, and a solution is provided for large-scale use of tunable light emitting chips in the future.

The invention discloses a preparation method and a structure of a novel electro-absorption modulated laser, and the method comprises the steps: symmetrically dividing a substrate into a double-end modulation region, a gain region, a grating region and a phase region, manufacturing a first mask pattern on the surface of the gain region, growing an active layer containing a quantum well structure in a mask gap through a selective region epitaxy technology, forbidden band red shift of the gain region is realized; manufacturing a mask covering the gain region and the modulation region, and etching a non-functional region to expose the substrate; a passive material with a wider band gap is grown in the exposed substrate area in a butt joint mode, and a photon limiting structure is formed; manufacturing a sampling grating through electron beam direct writing, growing a cladding layer and a contact layer, and etching an inverted table shallow ridge waveguide; and finally, etching an electrical isolation trench and manufacturing a double-sided electrode to complete device integration. Through the selective area epitaxial growth technology, active materials with two forbidden bandwidths of the gain area and the modulation area are achieved through one-time epitaxial growth, and a solution with extremely low cost is provided for the wavelength tunable electro-absorption modulated laser.

In an embodiment, a device includes: an integrated circuit die including a die connector; a first through via adjacent the integrated circuit die; an encapsulant encapsulating the first through via and the integrated circuit die; and a redistribution structure on the encapsulant, the redistribution structure including a redistribution line, the redistribution line physically and electrically coupled to the die connector of the integrated circuit die, the redistribution line electrically isolated from the first through via, the redistribution line crossing over the first through via.

A single-stage isolation type three-phase Cuk rectification circuit comprises a three-phase AC power supply in star connection, three bridgeless isolation type Cuk rectification circuit bridge arm modules with the same structure, an output filter capacitor Co and a load RL. The input ends of the three bridgeless isolation type Cuk rectifier circuit bridge arm modules are line voltages of a three-phase alternating current power supply, and are uab, ubc and uca respectively; the output ends of the three bridgeless isolation type Cuk rectifier circuit bridge arm modules are connected in parallel, and the parallel output ends are connected in parallel with the output filter capacitor Co; and the output filter capacitor Co is connected in parallel with the load RL. The converter has the functions of buck-boost output, power factor correction and electrical isolation, meanwhile, each Cuk rectification circuit bridge arm is of a bridgeless structure, input and output current is continuous, the power factor is high, efficiency is high, positive wide-range output voltage is achieved, the current stress of a switching device is small, and the converter has rich application scenes.

The invention relates to the technical field of electric switches, in particular to an electric disconnecting switch interlocked with a pole-mounted circuit breaker and a control method thereof, and the method comprises the steps: obtaining standard coil current data, actual coil current data, main loop three-phase current data, power side voltage data and load side voltage data, and carrying out the preprocessing; determining time division points by using the wave crest and wave trough distribution characteristics so as to divide stage intervals; the health coefficient of the pole-mounted circuit breaker is obtained through stage interval similarity analysis; calculating an electrical isolation coefficient by combining the main loop current level difference and the bilateral voltage amplitude phase difference; and performing hierarchical interlocking control on the electric isolation switch based on the health coefficient and the electrical isolation coefficient. According to the invention, a two-dimensional evaluation system of mechanism health pre-judgment and electrical isolation hard criteria is constructed through multi-source data fusion, and the safety and reliability of distribution network operation are improved through a hierarchical interlocking control strategy.

According to the two-dimensional semiconductor stacked device structure and the preparation method thereof provided by the invention, three-dimensional vertical stacking of a two-dimensional semiconductor device is realized through a bonding process of the first interlayer dielectric layer and the second interlayer dielectric layer; the common problems of organic residue introduction, material wrinkling and breakage and the like in a traditional two-dimensional semiconductor film transfer process are effectively solved, so that the integrity and long-term working stability of a stacked structure are remarkably enhanced. Meanwhile, a dielectric layer of a bonding interface is utilized to construct an efficient interlayer isolation barrier, efficient electrical isolation between two two-dimensional semiconductor layers is achieved, the crosstalk problem of threshold voltages in an existing stacking framework is solved, independent and accurate adjustment of the threshold voltages of upper and lower layer transistors is achieved, and higher flexibility is provided for device performance optimization.

The utility model relates to the technical field of solar cells, and provides a back contact cell, a cell assembly and a photovoltaic system, an insulation region is arranged between a first region and a second region of a backlight surface of a silicon substrate of the back contact cell, a first passivation layer and a first doping layer are arranged in the first region, and a second passivation layer and a second doping layer are arranged in the second region. A first insulating dielectric layer is arranged on the insulating region, the first insulating dielectric layer is provided with an insulating extension section extending to the first doping layer, and the passivation extension section of the second passivation layer and the doping extension section of the second doping layer only cover the part, corresponding to the insulating region, in the first insulating dielectric layer and do not extend to the first doping layer. Therefore, through the arrangement of the insulating region and the first insulating dielectric layer, the electrical isolation effect between the insulating region and the first insulating dielectric layer can be improved, the risk of short-circuit electric leakage is reduced, and the performance of the back contact battery is improved.

The disclosure relates to a semiconductor die with a semiconductor body. The semiconductor die includes: a vertical transistor device with a first load region and a second load region at opposite sides of the semiconductor body; an additional transistor device with a source region at a first side of the semiconductor body, a gate trench, a body region aside the gate trench, and a drain region below the body region; an electrical isolation in the semiconductor body; and a vertical contact element extending from the first side into the semiconductor body. The electrical isolation is arranged laterally between the vertical transistor device and the additional transistor device. The vertical contact element makes electrical contact to the drain region of the additional transistor device and connects the drain region to the first side of the semiconductor body.

The invention provides a semiconductor device and a manufacturing method, and relates to the technical field of semiconductors. According to the invention, after a groove structure is formed on a long polycrystalline silicon channel, a high-aspect-ratio region with an extremely high aspect ratio is formed in a shoulder region of the groove structure according to an etching-back process of side wall oxide layers on two sides of the groove structure, and the aspect ratio of the high-aspect-ratio region is far away from the working range of an ultra-high-density plasma oxide deposition process; an oxide filling structure formed in a groove structure based on a high-density plasma oxide deposition process may have bubble defects, and the performance of a device is affected. For the situation, before the high-density plasma oxide deposition process is executed, the oxide interface and the polycrystalline silicon interface in the groove structure are adjusted to be flush to eliminate the high aspect ratio region, so that the aspect ratio of the groove structure meets the working range of the high-density plasma oxide deposition process; therefore, a compact oxide filling structure is formed, and the electrical isolation performance is ensured.

The utility model relates to an integrally designed energy storage system high-voltage control box, which comprises a box body and an electric appliance element, an operation panel is arranged on the box body, and the electric appliance element is communicated with the operation panel; the device further comprises an electrical isolation plate. The box body comprises an upper shell, a middle shell and a lower shell, the upper shell and the middle shell are assembled to form a high-voltage cavity, the middle shell and the lower shell are assembled to form a low-voltage cavity, the electric appliance elements comprise a plurality of correspondingly communicated high-voltage devices and low-voltage devices, the high-voltage devices are installed in the high-voltage cavity, and the low-voltage devices are installed in the low-voltage cavity. The low-voltage device is mounted in the low-voltage cavity; the electrical isolation plate is connected with the bottom of the upper shell and the top of the middle shell in a clamped mode, a plurality of independent cavities which are matched with the high-voltage devices and separated from one another are formed in the high-voltage cavity, and the high-voltage devices are independently arranged in the independent cavities respectively. According to the utility model, the electrical components are physically separated, so that the isolation of the electrical components is realized, and the electrical safety level and the insulation protection performance are improved.