Abstract: Provided are an additive masterbatch and use thereof. Raw materials of the additive masterbatch include a resin substrate, a high-melting-point additive, and a low-melting-point additive, wherein a melting point of the high-melting-point additive is greater than 40° C., and a melting point of the low-melting-point additive is equal to or less than 40° C. The additive masterbatch effectively solves the problems of a low-melting-point additive masterbatch being prone to adhesion and clumping, being complex in preparation process, being difficult to mold, etc. The provided additive masterbatch is not prone to clumping, can be prepared simply by utilizing a common process for masterbatch preparation, is simple to mold, and can be prepared into masterbatches with different particle sizes.

Abstract: This application discloses a battery cell. An electrochemical cell includes a positive electrode plate, a negative electrode plate, and at least three separators located between the positive electrode plate and the negative electrode plate. A first separator located at the middle among the at least three separators is a conductive layer. A second separator located between the positive electrode plate and the first separator and a third separator located between the negative electrode plate and the first separator are insulation layers. The first separator is connected to a communication chip. When the positive electrode plate or the negative electrode plate pierces the separator, an internal short circuit of the electrochemical cell may be caused. The communication chip may receive, in time, an electrical signal sent by the first separator, and report fault information to a battery management unit, so that safety in use of a battery is improved.

Abstract: A battery cover plate is provided, to resolve problems such as a signal transmission structure and sealing performance of the battery cover plate. The battery cover plate includes a plate body, a battery management unit, and a sensor assembly, wherein the plate body has an outer surface and an inner surface facing away from the outer surface. The battery management unit is disposed in the plate body, wherein a transmission structure is provided between the battery management unit and the outer surface, and the battery management unit includes a wireless communication module. The wireless communication module may perform wireless communication with the outside by using the transmission structure. The sensor assembly is connected to the battery management unit, wherein the sensor assembly is disposed in the plate body and extends out of the inner surface.

Abstract: A tubular snap-in connector includes one or more elastically mounted retaining tabs formed integrally with the connector. The retaining tabs permit the connector to be selectively connected to an electrical junction box by inserting a body of the connector into an appropriate opening in the junction box, advancing the body of the connector forward so that a wall of the junction box depresses a ramp portion of the retaining tabs, and continuing to advance the body of the connector forward until a wedge portion of the retaining tabs passes the wall of the junction box, at which point the retaining tabs spring outwards. A rear wall of each wedge engages an inner wall of the junction box to retain the connector within the box.

Abstract: A tubular snap-in connector includes one or more elastically mounted retaining tabs formed integrally with the connector. The retaining tabs permit the connector to be selectively connected to an electrical junction box by inserting a body of the connector into an appropriate opening in the junction box, advancing the body of the connector forward so that a wall of the junction box depresses a ramp portion of the retaining tabs, and continuing to advance the body of the connector forward until a wedge portion of the retaining tabs passes the wall of the junction box, at which point the retaining tabs spring outwards. A rear wall of each wedge engages an inner wall of the junction box to retain the connector within the box.

Abstract: A liquid-tight connector may include a riveting cap, a rotating connector, a threading unit, a sealing ring and a conduit locknut. In one embodiment, an O-ring may be disposed between the rotating connector and the threading unit to enhance the liquid-tight effect of the connector. It is important to note that the rotating connector is configured to engage with the riveting cap through a threaded section, while the rotating connector can freely rotate on the threading unit, so when one end of the conduit is secured to one terminal, the other end of the conduit can still be rotated with the liquid-tight connector until it is secured to the other terminal.

Abstract: A rain tight connector may include a connector body, a gland nut coupled to the connector body, and a compression ring. A locknut is coupled to the connector body on the end portion thereof opposite to the gland nut. The compression ring includes a central portion and first and second coaxial end portions. The central portion defines an annular stop. A locking unit with a plurality of locking teeth is provided in the present invention to further secure the metal tube.

Abstract: A liquid-tight connector may include a riveting cap, a rotating connector, a threading unit, a sealing ring and a conduit locknut. In one embodiment, an O-ring may be disposed between the rotating connector and the threading unit to enhance the liquid-tight effect of the connector. It is important to note that the rotating connector is configured to engage with the riveting cap through a threaded section, while the rotating connector can freely rotate on the threading unit, so when one end of the conduit is secured to one terminal, the other end of the conduit can still be rotated with the liquid-tight connector until it is secured to the other terminal.

Abstract: A weatherproof electrical box assembly may include a cover portion, a center portion and a bottom portion. The cover portion and bottom portion are configured to be integrated as a single piece. The cover portion is removably attached to one side of the center portion, and an adapter plate is removably secured to a recessed portion of the center portion. In one embodiment, the back wall of the bottom portion includes one or more bottom openings for receiving and attaching an electrical wire to an electrical component installed in the bottom portion. One advantage of securing the center portion onto the outer edges of the bottom portion, is that electrical components are thereby recessed in the bottom portion and not positioned adjacent the cover portion. As a result, electrical components may be further protected from any moisture accumulating on the inside cover area of the cover portion.

Abstract: A snap fitting has a trailing end adapted to be connected to flexible metallic conduit or metal clad cable, and a cylindrical leading end portion. The leading end portion is uniquely formed with a plurality of locking fingers and tensioning fingers adjacent to and on each side of each locking finger. The locking fingers spread radially axially outwardly from near the outboard end of the leading end portion toward the trailing end. The free ends of the fingers have exterior cam surfaces that engage the edge of the box opening when the fitting is inserted into the opening. This causes the locking fingers to flex radially inwardly during assembly of the fitting to the junction box. The snap fitting can be inserted into both sides of the opening of the junction box.