19results about How to "Improve overcurrent capability" patented technology

The utility model discloses a photovoltaic bypass module and a photovoltaic junction box. The photovoltaic bypass module includes an intermediate conductive terminal, a first conductive terminal, a second conductive terminal, a first bypass module diode, and a second bypass module diode, where a first gap formed between the first conductive terminal and the intermediate conductive terminal is utilized. The first conductive terminal and the middle conductive terminal form a first gap, and the second gap formed between the second conductive terminal and the middle conductive terminal form a second gap for the bus bar to pass through respectively, so that the positions of threading holes for the bus bar to pass through are relatively concentrated. The bus bar can directly penetrate into the box to reach the first bonding pad or the middle bonding pad or the second bonding pad, and other operations such as bending are not required to be performed on the bus bar, so that the junction box is more convenient to install, and the working efficiency is improved.

The invention discloses an asymmetric hybrid multi-gate semiconductor device, a manufacturing method thereof and a chip, and belongs to the technical field of semiconductors. The asymmetric hybrid multi-gate semiconductor device comprises a substrate which comprises a first high-voltage well region, a drain region, a first drift region and a second drift region which are sequentially connected in the target direction are arranged in the first high-voltage well region, and the doping concentration of the second drift region is larger than that of the first drift region; a first source region and a second source region which are spaced in the target direction are arranged in the well region in the second drift region, the well region, close to one side of the first drift region, of the first source region forms a first channel region, and the well region at the bottom of the second source region forms a second channel region; a first gate structure covering the first channel region; the second gate structure is located in the first high-voltage well region and covers the second channel region. According to the invention, the overcurrent capability of the device can be improved, a small device area is maintained, and the integration level of the device is ensured.

The utility model discloses a photovoltaic bypass module and a photovoltaic junction box. The photovoltaic bypass module comprises a plurality of conductive terminals which are sequentially arranged in the horizontal direction, any three conductive terminals which are continuously arranged are a first conductive terminal, a middle conductive terminal and a second conductive terminal in sequence, and a first bypass element is arranged between the first conductive terminal and the middle conductive terminal. And the second bypass element is arranged between the middle conductive terminal and the second conductive terminal, so that a plurality of bypass module diodes can be formed, the plurality of bypass module diodes which are connected in series can be packaged in a relatively small volume, the size of the box body can be further reduced, and the cost is reduced.

This application relates to the field of metal film capacitor technology, and provides an end-plate type high-current metal film capacitor for PCB circuit boards, including a housing, a core, end plates, and potting compound. The core is installed in the internal cavity of the housing, and the potting compound fills the remaining area of ​​the internal cavity of the housing. End plates are welded to both end faces of the core, and the outer surfaces of all end plates are in close contact with the corresponding inner walls of the housing. The upper part of the end plate is bent and supported on the corresponding positioning groove. Positioning protrusions are provided at both ends of the end plate, and the positioning protrusions are embedded in the corresponding positioning grooves. The width of the positioning grooves is the same as the width of the positioning protrusions. The end plates adopt a two-piece structure with the same polarity. The core is made of metallized polypropylene film wound together. The coating of the metallized polypropylene film is a mesh safety film with a diamond pattern design. The tops of all end plates are exposed on the upper surface of the potting compound. This application can control the capacitance decay rate and extend the product life.

The utility model provides an IGBT test seat comprising a test assembly, and the test assembly comprises an IGBT body, a lower housing, an upper housing, a first needle plate, a second needle plate, a first conductor, a floating plate, a pin, and a second conductor. According to the utility model, the first electric conductor and the second electric conductor are sheet-shaped, the first adhesive tape clamping groove and the second adhesive tape clamping groove are processed in the middle of the first electric conductor and the second electric conductor, and the IGBT pin profiling groove is further arranged, so that the first electric conductor and the second electric conductor can be tightly attached to the pins of the IGBT body, and the IGBT body is placed on the floating plate of the lower shell at the beginning; during testing, pins of the IGBT body are not temporarily inserted into the first electric conductor and the second electric conductor, then the lower shell and the upper shell are combined and pressed downwards through the buckling part and the clamping groove, so that the IGBT body is inserted into the first electric conductor and the second electric conductor, and the first electric conductor and the second electric conductor are initially fixed on the lead-out PCB and are in point contact with a PAD on the lead-out PCB to form testing. The novel conductor of the IGBT adopts an integrated design, so that the novel conductor is higher in voltage resistance and overcurrent capability.

The utility model belongs to the technical field of magnetic ring inductance structure, specifically disclose a kind of large current's magnetic ring inductance structure, including flat conductor and plane magnetic ring;Flat conductor is sheet, middle section is horizontal, both ends are bent and perpendicular, the middle part through-hole of plane magnetic ring is sheet, including first plane magnetic ring and second plane magnetic ring, the both ends of flat conductor are respectively inserted into the middle part through-hole of first plane magnetic ring and second plane magnetic ring and fixed, the both ends of flat conductor are respectively exposed from downside and form pin on the side away from middle section.The utility model effectively increases the total effective length of magnetic circuit by two plane magnetic rings, and the magnetic ring of plane structure further effectively magnetic circuit cross-sectional area, increase magnetic flux.The setting of cooperation flat conductor improves the overcurrent capacity of magnetic ring inductance, and the area of conductor is also increased to improve the heat dissipation capacity, realize high reliability's large current magnetic ring inductance.

The utility model provides a kind of power module and motor controller, power module is applicable to motor controller, power module includes drive board, connecting assembly, sensing component and power assembly;Connecting assembly is connected with drive board, to input or output current to drive board by connecting assembly;Sensing component is connected by drive board with connecting assembly, to be used for detecting whether there is current on connecting assembly;Power assembly is installed on drive board, and power assembly includes heat dissipation component and multiple chips connected with heat dissipation component, the opposite sides of heat dissipation component all have installation shell, and multiple chips are respectively arranged on corresponding installation shell with interval, to carry out heat dissipation to multiple chips by heat dissipation component, to solve the problem of low heat dissipation efficiency of power module in motor controller in prior art.

The utility model provides a discrete device based on aluminum strip bonding, which relates to the technical field of semiconductor power device packaging, and comprises a heat dissipation frame, a plurality of power chips welded on the top of the heat dissipation frame, and a plurality of LED chips welded on the top of the heat dissipation frame. The power chips are electrically connected through aluminum strip bonding, and the surfaces of the power chips and the pins of the heat dissipation frame are electrically connected through aluminum strip bonding. The heat dissipation frame and the power chips are packaged in the shell, and the bottom of the heat dissipation frame and the pins are exposed out of the shell. The beneficial effects are that the power chips are electrically connected through aluminum tape bonding, and the surfaces of the power chips and the pins of the heat dissipation frame are electrically connected through aluminum tape bonding; and an ultrasonic welding technology and a bonding aluminum strip are used, so that the reliability and the overcurrent capability are greatly improved.

The present invention discloses a combined connector, including a fixed seat, on which at least one large current module, at least one small current module and at least one signal module are arranged; the large current module includes a cable and a copper busbar assembly respectively inserted on both sides of the fixed seat, and one end of the cable is provided with a wire nose connected to the copper busbar assembly; the small current module includes a first plug and a second plug respectively inserted on both sides of the fixed seat, and the first plug and the second plug are correspondingly plugged; the signal module includes a first signal plug and a second signal plug respectively inserted on both sides of the fixed seat, and the first signal plug and the second signal plug are correspondingly plugged. The combined connector composed of current modules and signal modules of different sizes in the present invention can meet the demand for combined connectors of complete sets of control equipment, so as to solve the situation that when the connector is used in a cabinet or a box, the active end of the connector is independently plugged according to the function of the electrical system.

The invention discloses a driving circuit, a driving method and driving equipment of a switch assembly and a storage medium. The switch assembly comprises an MOS (Metal Oxide Semiconductor) and an IGBT (Insulated Gate Bipolar Translator), the driving circuit comprises a microcontroller which is respectively connected to a grid electrode of the MOS and a grid electrode of the IGBT, and the microcontroller is configured to control the MOS to be switched on and control the IGBT to be switched off when a working current is smaller than a first current threshold value, so that the working current passes through the MOS; when the working current is larger than or equal to the first current threshold value and smaller than the second current threshold value, the MOS is controlled to be firstly switched on and then switched off relative to the IGBT, so that the working current passes through the MOS and the IGBT which are connected in parallel; and when the working current is greater than or equal to the second current threshold value, controlling the IGBT to be switched on firstly and then switched off relative to the MOS, so that the working current passes through the MOS and the IGBT which are connected in parallel. According to the driving circuit of the switch assembly, different driving modes are implemented according to different current ranges of the working current, the switch device is protected, and the working efficiency of the switch device is improved.

The utility model belongs to a battery module pole piece structure in the technical field of power batteries. A plurality of fixing studs (2) are arranged on the upper surface of the pole piece body (1), a fool-proof notch (3) is formed in the side edge of the pole piece body (1), the lower surface of the pole piece body (1) is connected with a battery cell (4), the upper surface of the pole piece body (1) is connected with a series copper bar (5), and each fixing stud (2) on the upper surface of the pole piece body (1) is of a structure capable of penetrating through a positioning hole in the series copper bar (5). The battery module pole piece structure disclosed by the utility model is simple in structure, reliable positioning and connection of the pole piece and the series copper bar are realized, the contact area is increased, the overcurrent capability is enhanced, and reliable working performance of the battery module is ensured.

The invention relates to the technical field of thin-film capacitors, in particular to a three-level thin-film capacitor and a manufacturing process thereof, which not only can meet the requirement of high capacity required in a high-power inverter, but also can reduce space occupation in an inverter module and facilitate installation, and comprises a capacitor shell and a capacitor core, the capacitor core comprises three core groups which are arranged in the same capacitor shell, each core group is composed of two groups of cores which are connected in parallel, two ends of each core group are fixedly connected with welding copper plates, the welding copper plates are connected with busbars provided with electrode through holes, extraction electrodes penetrate through the electrode through holes, and the extraction electrodes are connected with the busbars. The core is a flat core formed by winding a metalized film.

The invention provides a USB connector, a circuit board assembly and electronic equipment, the USB connector comprises a shell and an insertion assembly, at least part of the insertion assembly is inserted into the shell, and the insertion assembly comprises an upper conductive terminal group and a lower conductive terminal group; the upper conductive terminal group comprises a first power supply terminal and a second power supply terminal; the lower conductive terminal group comprises a third power supply terminal and a fourth power supply terminal; each conductive terminal comprises a butt joint part at the front end, a welding part at the rear end and a main body part arranged between the butt joint part and the welding part; wherein the welding part of the first power supply terminal, the welding part of the second power supply terminal, the welding part of the third power supply terminal and the welding part of the fourth power supply terminal are electrically connected with the outside as a whole. According to the USB connector provided by the embodiment of the invention, the power supply terminals of the upper and lower layers of conductive terminals are integrally designed, so that the maximization of the weld legs and the bonding pads can be realized, and the overcurrent capability of the USB connector is further improved.

The invention provides an electronic device, a circuit board assembly thereof and a USB connector, the USB connector comprises a shell and an insertion assembly, at least part of the insertion assembly is inserted into the shell, and the insertion assembly comprises an upper conductive terminal group, a lower conductive terminal group and a clamping piece; the upper conductive terminal group comprises a first grounding terminal, and the lower conductive terminal group comprises a second grounding terminal; each conductive terminal comprises a butt joint part at the front end, a welding part at the rear end and a main body part arranged between the butt joint part and the welding part, an avoiding gap is formed between the butt joint part of the first grounding terminal and the butt joint part of the second grounding terminal, the clamping piece penetrates through the avoiding gap, and the clamping piece is used for being clamped and matched with an externally-inserted USB male head. According to the USB connector provided by the embodiment of the invention, the butt joint part of the grounding terminal is locally thinned, and the middle steel sheet passes through the avoiding gap formed by the thinned area, so that the main body part of the grounding terminal can be thickened, and the overcurrent capability of the USB connector is further improved.

The utility model discloses a connector pin, a jack contact element and a connector terminal assembly, the connector pin comprises a first plugging part, a second plugging part and a first connecting part, the second plugging part is connected to the first plugging part, the first connecting part is connected to one end, deviating from the first plugging part, of the second plugging part, and the second plugging part is connected to the jack contact element. The first plugging part and the second plugging part are arranged along the axial direction of the connector pin, and the first plugging part and / or the second plugging part can elastically deform in the radial direction. The jack contact element comprises a first contact part, a second contact part and a second connecting part, the second contact part is connected to one end of the first contact part, the second connecting part is connected to one end, deviating from the first contact part, of the second contact part, and the connector pin is inserted into the jack of the jack contact element; the connector pin is in elastic contact with the second contact part, and the connector pin is in elastic contact with the first contact part.

The utility model relates to the technical field of energy batteries, and discloses a lead and an energy storage device, the lead is suitable for being connected between adjacent battery clusters, the lead comprises an electric conductor and an insulator, a cooling flow channel suitable for bearing cooling liquid is arranged in the electric conductor, one end of the cooling flow channel is provided with a liquid inlet, and the other end of the cooling flow channel is provided with a liquid outlet. Cooling liquid flows into the cooling flow channel from the liquid inlet and flows out from the liquid outlet, and the insulator wraps the periphery of the electric conductor. The wire is connected between the adjacent battery clusters and can replace a copper bar, and the cooling liquid flows into the cooling flow channel from the liquid inlet and flows out from the liquid outlet, so that heat generated when the electric conductor is electrified is taken away, the electric conductor is cooled, the limitation of temperature rise on the over-current capability of the electric conductor is relieved, and the service life of the electric conductor is prolonged. The overcurrent capacity of the wire is improved, the large-current connection requirement between battery clusters is met, and the situation that the whole machine weight is increased due to the arrangement of a large-section copper bar is avoided.

Embodiments of the present application provide a battery cell, a method and system for manufacturing the battery cell, a battery, and a power consuming device. The battery cell includes: a shell including an electrode draw-out portion; and an electrode assembly accommodated in the shell. The end of the electrode assembly facing toward the electrode draw-out portion is provided with a first tab, the first tab is wound around a winding axis of the electrode assembly and includes a plurality of turns of tab layers, and at least some of the plurality of turns of tab layers are welded to form a first welded portion. Some of the plurality of turns of tab layers are welded to the electrode draw-out portion to form a second welded portion; and among the tab layers connected to the first welded portion, at least one turn of tab layer is not welded to the electrode draw-out portion. In the present application, the overcurrent capability of the battery cell can be improved.

The invention relates to the technical field of capacitor processing, discloses a metal spraying control method and system for a thin film capacitor, and aims to realize effective control on the diameter of metal spraying particles during metal spraying operation by accurately detecting the diameter of the metal spraying particles outside a spray gun in the metal spraying process. And the diameter of the metal spraying particles is accurately controlled within a specific proportion interval of the thickness of the film, so that the metal spraying particles can smoothly enter a gap between the two layers of films. In the process, the metal spraying particles are attached to the plating layer of the metallized film through the side faces, and the contact area can be effectively increased through the attaching mode. Along with the increase of the contact area, the adhesive force of the metal spraying layer is enhanced, and the contact resistance is reduced. The enhancement of the adhesive force of the metal spraying layer and the reduction of the contact resistance are beneficial for improving the overcurrent capability and the current impact resistance of the capacitor, and finally the improvement of the metal spraying performance of the metallized film capacitor is realized, so that the overall quality of the capacitor is improved.

The present invention discloses a connector, including a plug and a socket that are plugged into each other. The plug includes a plug shell, a plug rubber core, a plug terminal and a cable. The plug shell is composed of a first right-angled side and a second right-angled side. The plug rubber core is arranged in the first right-angled side. The socket includes a socket shell, a socket rubber core and a socket terminal. An insertion hole with an opening facing the second right-angled side is provided on one side of the front end of the plug rubber core. The front end of the plug terminal is horizontally inserted into the middle of the insertion hole, and gaps are provided between the two side surfaces of the plug terminal and the wall surface of the insertion hole. The front end of the socket terminal is a U-shaped plug-in section, which is inserted into the insertion hole and sleeved with the plug terminal. The present invention realizes 90-degree plug-in between the plug and the socket by setting an insertion hole on the plug rubber core and exposing the plug terminal inside, and then designing the front end of the socket terminal to be a U-shaped plug-in section plugged with the plug terminal, and the overall structure is simple.