39results about How to "Guaranteed overcurrent capability" patented technology

The invention belongs to the technical field of battery manufacturing, and particularly relates to a battery top cover assembly structure. The battery top cover assembly structure comprises a first pole, a second pole and a top cover sheet, the first pole is provided with a first welding ring, the second pole is provided with a second welding ring, the top portion of the first pole is encapsulatedwith a first plastic piece matched with the first welding ring, the top portion of the second pole is encapsulated with a second plastic piece matched with the second welding ring, the first pole andthe second pole pass through the seal ring and are installed at the top cover sheet. By arranging an encapsulating structure of the top cover aluminum ring and the poles, the problem of generation ofa metal wire is solved, the safety of the battery is improved, the overcurrent capacity of the poles is ensured, and the production process is simplified, so that the production cost is reduced. Besides, the invention further discloses a battery top cover assembly method.

The invention provides a bidirectional transient voltage suppressing diode and a manufacturing method thereof. A second active region and a third active region, which are simultaneously formed and are of the same conductivity type, doped concentration and shape, are arranged in the diode. The longitudinal NPN or PNP structure of a traditional bidirectional transient voltage suppressing diode is changed into a transverse NPN or PNP structure. Via a current channel formed by a conducting layer, a buried layer and a first active region, symmetrical forward and backward suppressing voltage is ensured no matter whether forward voltage or backward voltage is applied to the diode. The whole diode is of a longitudinal structure, and the current carrying capacity of the diode is ensured without influencing encapsulation.

The invention discloses an electric core connecting sheet, a battery and an assembling method. The electric core connecting sheet comprises a body, an electric core connecting portion and a solderingconnecting portion. The electric core connecting portion is disposed on one side of the body and electrically connected with the tab of the electric core. The soldering connecting portion is disposedon the other side of the body, electrically connected to the pole of the battery, and bendable relative to the body. By providing the electric core connecting portion on the electric core connecting sheet, the tabs of the electric core can be soldered and fixed to the electric core connection portion, thereby realizing the early current collection of the positive and negative electrodes of the electric core, preventing the positive and negative of all the electric cores from being directly welded on the poles of the battery, and at the same time, ensuring the overcurrent capability of each connection position during the current collecting process of the battery. In addition, the welding connection portion on the electric core connecting sheet is connected with the pole of the battery, thereby finally realizing the current collection of the positive and negative electrodes of the plurality of electric cores, avoiding the welding difficulty caused by the excessive number of the tabs welded on the pole and improving the welding quality.

The invention relates to the field of rainwater treatment, and discloses a rainwater inlet device, which comprises a box body, a flow guide groove, a rainwater strainer, an overflow baffle plate, a filter medium layer and a rainwater pipeline, wherein the rainwater strainer is arranged at the top of the box body; the flow guide groove is arranged in the box body and is located below the rainwaterstrainer; the overflow baffle plate is perpendicularly arranged below the flow guide groove; the overflow baffle plate divides the box body into a rainwater storage and filter area and a water drain area; the filter medium layer is paved at the bottom of the rainwater storage and filter area; the tail end of the flow guide groove is located above the rainwater storage and filter area; the lower part of the overflow baffle plate is provided with a water penetration hole which is used for communicating the rainwater storage and filter area with the water drain area; the water drain area is provided with the rainwater pipeline. The rainwater inlet device provided by the invention can be used for effectively controlling the pollution by moderate and light rainfall and primary radial flow, andis provided with a primary rainwater storage space; a filter filling material for primary rainwater is convenient to replace; the later running and maintenance requirements of a rainwater inlet are low, and overflowing rainwater can be drained from an overflow passage arranged between the flow guide groove and the overflow baffle plate.

The invention discloses a screen pipe, a string and a blockage removing method, and relates to the field of oil and gas exploitation. The screen pipe comprises a base pipe, a protecting shell and a pre-filling particle unit; a first opening hole is formed in the side wall of the base pipe; the protecting shell is arranged outside the base tube in a sleeving mode, a second opening hole is formed inthe side wall of the protecting shell, and an annular accommodating cavity is formed between the base pipe and the protecting shell; and the accommodating cavity is filled with the pre-filling particle unit, and the size of the pre-filling particle unit can be changed to be reduced when the preset condition is met. The self-blockage-removing function can be achieved after the screen pipe is blocked, and the oil well productivity is guaranteed.

The invention discloses a method for implementing a single point grounding design, a single point grounding PCB package and a printed circuit board. The method comprises the steps that a PCB is provided and at least comprises a signal layer and a main horizontal layer; the single-point grounding PCB package is designed on the PCB, including a single-point grounding device and a single-point grounding vent hole; the single-point grounding device is arranged on the main horizontal layer, and is communicated with the horizon of the main horizontal layer; the single-point grounding vent hole runs through the signal layer, is communicated with the single-point grounding device, and is isolated from the signal region in the signal layer; and the single-point grounding PCB package is called when single-point grounding design is required to implement. Therefore, single-point grounding is used as an independent device for processing, and the device is provided with graphic symbols corresponding to a schematic circuit diagram and a package structure corresponding to PCB, so that standard design and automatic processing of single-point grounding can be realized, and the design efficiency and reliability of PCB can be improved.

The invention is suitable for the technical field of test and provides a low-impedance contact conductive test electrode. A sleeve provided with an accommodation cavity is sleeved on a pin rod of a probe, a first spring is abutted between the side wall of the pin rod of the probe and the side wall of the accommodation cavity of the sleeve, a second spring is abutted between the tail end of the probe and the closed end of the accommodation cavity, and the pin rod of the probe is provided with an anti-drop device to prevent the probe from dropping from the sleeve, so that when the probe makes contact with and is pressed by an electrical element under test, the probe and the sleeve can be still in good electric connection even if the axial deviation and angle deviation occur, discharge capacity of the electrical signal is ensured, and test effect and test efficiency are guaranteed.

The invention relates to the technical field of power electronic capacitors, and especially relates to a DC-link capacitor used for alternating current/inversion equipment as direct current link and filtering, in particular to a thin film capacitor applicable to a DC-link occasion. The thin film capacitor has the advantages of large capacity, small size, low cost, reliability, stability, high safety performance and the like. The thin film capacitor can extensively replace electrolytic capacitors in the DC-link occasions of the power electronic field. The thin film capacitor comprises a capacitor core and is characterized in that the capacitor core is formed by winding a metallized polypropylene thin film, wherein the metallized polypropylene thin film comprises a polypropylene thin film medium and a capacitor plate, and the capacitor plate is a metal coating plated on the polypropylene thin film medium in an evaporation manner.

The invention provides a battery adapter piece welding method which comprises the steps that an adapter piece and a top cover pole of a battery are arranged, and blue laser is output to the surface of the adapter piece through a laser so that the adapter piece and the top cover pole can form a liquid molten pool surface; the laser outputs fiber laser to act on the surface of the liquid molten pool, so that the surface of the liquid molten pool absorbs the fiber laser to form a keyhole; and a laser emitting unit of the laser is driven by a moving shaft to move to form a welding track, so that the adapter piece is welded to the top cover pole, and the adapter piece is made of copper. The blue laser and the optical fiber laser are adopted in a welding mode, so that the overall laser utilization rate is high, adapter piece laser welding application can be completed with low total power, the cold joint problem is not prone to occurring, welding is free of splashing, the overcurrent capacity of a welding seam is guaranteed, and the product performance of the square shell battery is greatly improved.

The present invention provides an electrode member, a pole piece, a manufacturing method thereof and a battery, and belong to the field of batteries. The electrode member includes a metal wire, a polymer base film having a first through-hole, a conductive layer formed on a surface of the polymer base film, and a metal foil. The conductive layer has a main body portion, a first overlapping portion extending from the main body portion, and a second through hole formed in the first overlapping portion. The metal foil is provided with a second overlapping part provided with a third through hole. The second overlapping part of the metal foil is tightly attached to the first overlapping part of the conductive layer through a metal wire. The metal wire penetrates through the first through hole, the second through hole and the third through hole. The electrode member has relatively smaller weight and lower manufacturing cost and space occupation.

The invention relates to a battery assembly and a mobile terminal, the battery assembly comprises a battery body, and an accommodating area is formed on the battery body; the tabs are arranged on the battery body and comprise N first tabs and one or more second tabs; the protection plates comprise N first protection plates, N is an integer greater than or equal to 2, the N first protection plates are connected with the N first tabs in a one-to-one correspondence manner, and the N first protection plates are folded and attached to the accommodating area through the N first tabs. According to the embodiment of the invention, the plurality of tabs are connected with the plurality of protection plates in the one-to-one correspondence manner, and the plurality of protection plates are folded and attached to the accommodating area of the battery body, so that the size of the protection plates can be effectively reduced, the overcurrent capability of the protection plates can be ensured, the occupied space of the battery assembly can be reduced, and the capacity of the battery is effectively improved.

The invention discloses a current collector assembly, a battery cell and a battery pack. The current collector assembly comprises at least two tab groups, wherein each tab group comprising a plurality of tabs arranged in a stacked manner; a conductive connection component which comprises at least three conductive connection sheets, wherein the at least three conductive connection sheets are arranged at intervals in the thickness direction of the conductive connection sheets, and one tab group is stacked between every two adjacent conductive connection sheets; and at least one of the two adjacent conductive connecting sheets is electrically connected with each tab in the tab group. According to the current collector assembly provided by the embodiment of the invention, the welding difficulty of the conductive connecting sheet and the tab group can be reduced, false soldering or pseudo soldering is avoided, the welding effect is ensured, and the overcurrent capability of current is improved.

The invention discloses a high trigger voltage thyristor. The high trigger voltage thyristor comprises a plastic package body, the plastic package body is internally provided with a thyristor chip anda diode chip, and the plastic package body is further provided with a control electrode G, an anode A, a cathode K and a lead. The diode chip is arranged on the control electrode G, one circuit of the thyristor chip passes through the diode chip and is connected to the control pole G, and the other circuit of the thyristor chip is connected to the cathode K. The high trigger voltage thyristor hasa high trigger voltage, the thyristor is effectively prevented from being triggered to be opened by a mistake under a strong electromagnetic pulse environment, the reliability is high, the trigger voltage can be precisely controlled through the voltage size of a control electrode series diode, and the high trigger voltage thyristor can be adapted to various application circuits and a new drive circuit is not required to be redesigned.