41results about How to "Improve IP protection level" patented technology

The invention provides a cabinet structure. The cabinet structure comprises a framework, a cover plate and side plates, wherein the side plates are arranged around the framework. The framework comprises an upper frame and a bottom frame. The framework is formed by connecting the upper frame with the bottom frame through a corner connector and a column profile. The upper frame and the bottom frame are formed by respectively connecting two crossbeam profiles with two longitudinal beam profiles. The column profile is in a symmetrical structure with a sectional split line as the center. The cabinet structure further comprises a dustproof drain connected with the outer wall of the framework. The dustproof drain comprises an end face connected with the outer wall in parallel. The end face transitions to an airfoil through a U-shaped support section. Sealing elements are respectively arranged between the cover plate and the side plate and between the upper frame and the bottom frame. A dust trench is formed by the edge of the cover plate, the edge segment of the side plates and the dustproof drain. A labyrinth seal 1 is formed by the end face, the cover plate and the sealing element. A labyrinth seal 2 is formed by the airfoil, the side plates and the sealing element. Due to the structure design of three seals of the dust trench, the labyrinth seal1 and the labyrinth seal 2, the cabinet structure is provided with good sealing, enough industrial production (IP) level, and therefore the cabinet structure is capable of adapting the harsh industrial environment.

The present invention relates to a high-power DC charging machine, which comprises a circuit breaker, a contactor, a PFC rectifier circuit, a plurality of charging loops and a non-vehicle-arranged DC charging machine controller. The three-phase four-wire AC input voltage is connected with the contactor through the circuit breaker. The output of the contactor is connected with the input end of the PFC rectifier circuit. The output end of the PFC rectifier circuit is divided into a plurality of branches and the plurality of branches are respectively connected with the plurality of charging loops. The output ends of the plurality of charging loops are used for outputting a direct current to an electric automobile, respectively. The contactor, the PFC rectifier circuit and each charging loop are connected with the non-vehicle-arranged DC charging machine controller and are independently controlled. The high-power DC charging machine is simple in structure, wherein the one-machine and multi-gun design is realized. The utilization rate of the DC charging machine is improved. An insulated gate bipolar transistor (IGBT) or an SIC power module is adopted as a key switch element, so that the reliability of the charging machine is improved. The cost of the charging machine is reduced.

The invention discloses a high withstand voltage IGBT DC power distribution based electric vehicle charging station. The high withstand voltage IGBT DC power distribution based electric vehicle charging station comprises a high-voltage circuit breaker, a high-voltage power frequency transformer, a high-voltage DC conversion device and a charger. A three-phase high-voltage input voltage is connected with the high-voltage power frequency transformer through the high-voltage circuit breaker; the output end of the high-voltage power frequency transformer is connected with the high-voltage DC conversion device; and the high-voltage DC conversion device converts a three-phase high-voltage input AC power into a DC power and then supplies to DC power to the charger. By adoption of the high withstand voltage IGBT, the high-voltage DC conversion device realizes power factor correction, LLC full bridge inversion and a DC power distribution scheme of converting the three-phase high-voltage input AC power into the DC power and then supplying the DC power to the charger; and without power factor correction, the design of the DC charging module is simplified, the power density of the DC charging module is improved, the reliability of the charger is improved and the cost of the charger is reduced. In addition, the high withstand voltage IGBT DC power distribution based electric vehicle charging station increases the device IP protection level, improves the working reliability of the device in an outdoor malicious environment and prolongs the service life of the device.

The invention relates to section steel for an equipment cabinet frame. The section steel comprises a first external mounting plate, wherein a second external mounting plate, a first external sealing plate, a circular arc sealing plate, a second external sealing plate, a main mounting plate, an auxiliary mounting plate, a first internal bending plate, a second internal bending plate, a third internal bending plate and a fourth internal bending plate, which are connected with the two ends of the first external mounting plate in sequence; the section steel provided by the invention is simple in structure and convenient to use; fixed installation of a plurality of types functional auxiliary parts can be realized through an internal installation surface; a bending edge containing space of an external hanging piece can be realized through an external installation surface and positions for mounting a hinge and a closing part are arranged; the section steel is internally provided with three section cavity sub-regions and an equipment cabinet formed by the section steel has the advantages of high strength and good torsion resistance; the equipment cabinet prepared by the section steel can be used for flexibly realizing standardized production and the sealing property of the equipment cabinet is improved through setting a door plate sealing strip, so that the equipment cabinet reaches a relatively high IP protection grade.

The invention discloses a trolley conductor structure for increasing IP protection grade. The structure comprises a wire jacket provided with an opening on the top face and a current collector movably connected to the wire jacket; the current collector comprises an electronic brush box arranged in the wire jacket in a sleeved mode and a flat rectangular junction box; the bottom of the junction box is connected to the top of the electronic brush box, and the top of the junction box extends out of the opening; the left side and the right side of the top face of the wire jacket are provided with an A type bending piece and a B type bending piece respectively, wherein the A type bending piece and the B type bending piece are in an angle steel shape; transverse folding parts of the two bending pieces are relatively opposite; the vertical folding part of the A type bending piece is connected to the right brim opening of the opening on the top of the wire jacket, and the vertical folding part of the B type bending piece is connected to the left vertex of the top face of the wire jacket body; the width of the vertical folding part of the B type bending piece is bigger than that of the vertical folding part of the A bending piece, and the width of the transverse folding part of the B type bending piece is bigger than that of the transverse folding part of the A bending piece; the transversely arranged junction box is connected to the top face of the electronic brush box through a left toward transversely arranged n-shaped three-fold bending piece and then through a stripe-block box. The IP protection grade is higher.

A lithium ion battery module for an electric forklift truck, and a power supply box, which belong to the technical field of lithium ion batteries. The battery module comprises a housing and a batterypack in the housing; the battery pack comprises cells (11), an inter-cell heat insulation sheet (12), and a bottom surface insulating plate (13), a side surface insulating plate (15) and an end surface insulating plate (14) which are at the periphery of the cells (11), and a bus bar support (7) at the top; the cells (11) are square lithium iron phosphate batteries, and are grouped in a mode with each parallel branch having eight cells which are connected in series, a protruding spacer (18) is provided on the surface of the side surface insulating plate (15) and the surface of the bottom surface insulating plate (13), and the bus bar support (7) is provided with an inter-cell (11) connection bar (4) and an end connection bar (6). The power supply box comprises a box body (34), the box body(34) is internally provided with a high-voltage box (35), a BMS and the described lithium ion battery module for an electric forklift truck, a box cover (39) is provided on the box body (34), and an exhaust valve (50) is provided on the box cover (39). The lithium ion battery module and the power supply box both have high reliability in terms of structure and thermal performance.

The invention relates to an encoder, and the invention discloses an encoder mounting structure. The encoder mounting structure comprises an encoder stator (1), an encoder rotor (2) and an encoder mounting plate (3), and the encoder rotor (2) is mounted on a motor mandrel through a mounting through hole in the encoder mounting plate (3); and the encoder rotor (2) is located in a cavity defined by the encoder stator (1) and the encoder installation plate (3), and the installation end of the encoder stator (1) is connected with the encoder installation plate (3) through a limiting structure so that the encoder stator (1) can be clamped, sealed and fixed to the encoder installation plate (3). The invention also discloses a motor. According to the invention, miniaturization of the motor is facilitated, the sealing performance of the motor can be ensured, and a high IP protection grade is realized.

The invention relates to the technical field of circuit breakers, in particular to a leakage circuit breaker. The leakage circuit breaker comprises a circuit breaker main body, a protective cover and heat sinks, wherein the protective cover is arranged on the circuit breaker main body; the heat sinks are arranged on two sides in the protective cover; and a wiring groove is formed on the protective cover. The leakage circuit breaker provided by the invention has the advantages of simple structure, convenience in use, strong practicability, stable electric performance, good safety and easiness for application and promotion; and the temperature rise of the leakage circuit breaker can be obviously reduced, the IP protective grade of the leakage circuit breaker can be increased, and the performance of the leakage circuit breaker can be improved.

The invention relates to a novel panel device on a ring main unit. The novel panel device comprises an electric mechanism operating device and a manual mechanism operating device, and the electric mechanism operating device comprises button devices and electric mechanism operating holes; the button devices comprise telescopic rods, positioning parts and locking parts, the telescopic rods are mounted in through holes in the positioning parts, the positioning parts are fixed to the locking parts, and the button devices are fixed to the electric mechanism operating holes through cooperation of the positioning parts and the locking parts; the manual mechanism operating device comprises a sliding assembly, a movable groove and sliding positioning grooves, the sliding assembly comprises a sliding piece and a chain ring, the chain ring is fixed on the sliding piece, and the sliding assembly is mounted in the corresponding sliding positioning groove through the sliding piece and moves up and down. The novel panel device is used for improving the IP protection grade of a panel and accords with requirements of bid inviting of the state grid corporation of China to the panel protection IP grade.

The invention discloses a cylindrical direct-current vibration motor, and relates to the field of vibration motors. In the use of vibration equipment, a direct-current vibration motor is installed onequipment by using a bottom foot plane or a flange plane, the structure of the motor is relatively complicated, a relatively large installation space needs to be reserved during installation, the costcontrol of the motor and the equipment is not facilitated, and the production cost is increased. A closed cylindrical compact structure motor is formed by a round tube type shell, and a round front end cover and rear end cover; a rotating shaft and an eccentric block are all arranged in the motor; the motor is clamped and installed on the equipment through a hoop; and after the motor is electrified, the motor performs rotation motion through electro-magnetic induction, a rotor drives the eccentric block on the rotor to rotate to generate exciting force. The bottom foot or flange mounting structure of a traditional direct-current vibration motor is omitted, so that the structure is more compact, the size is smaller, and the safety protection grade is higher.