355results about "Resistor cooling/heating/ventillation" patented technology

The utility model discloses a chip resistor heat dissipation structure, which comprises a resistor main body structure, a first electrode structure and a second electrode structure, the first electrode structure and the second electrode structure are respectively arranged at two ends of the resistor main body structure, and the resistor main body structure comprises a ceramic substrate, a resistor layer, an inner protection layer and an outer protection layer, the resistance layer is arranged on one side of the upper end of the ceramic substrate, the inner protection layer is arranged on the outer side of the resistance layer, the outer protection layer is arranged on the outer side of the inner protection layer, a first reinforcing block is arranged in the middle of the interior of the ceramic substrate, and second reinforcing blocks are symmetrically arranged on the two sides of the first reinforcing block in the ceramic substrate. Compared with the prior art, the ceramic substrate has the advantages that the circulation grooves and the heat dissipation openings are additionally formed in the ceramic substrate, the heat dissipation speed of the ceramic substrate can be increased, meanwhile, the first reinforcing blocks and the second reinforcing blocks are additionally arranged, and therefore the stability of the structure of the ceramic substrate is guaranteed while internal heat dissipation of the ceramic substrate is not affected.

Systems, apparatuses, and methods for a modular resistor grid system include a mount and a plurality of modular resistor grid assemblies that interchangeably couple to the mount. At least two modular resistor grid assemblies are in the plurality. Each has a housing and a plurality of resistor plates. Each housing has input and output terminals. Each plurality of resistor plates is connected between the input and the output terminal of a housing. Each resistor plate has a thickness, and each plurality of resistor plates provides a target electrical resistance for a modular resistor grid assembly. A first modular resistor grid assembly has a first number of resistor plates with a first thickness. A second modular resistor grid assembly has a second number of resistor plates with a second thickness. The first number of resistor plates is greater than the second number. The first thickness is greater than the second thickness.

According to the chip resistor and the preparation method thereof, the laser wire cutting grooves adjacent to the left electrode and the right electrode are formed in the resistance layer through laser cutting, the resistance value of the resistor can be accurately adjusted and controlled, the manufacturing precision and consistency of the resistor are improved, the laser cutting mode is optimized through diagonal cutting, and the production efficiency is improved. The laser wire cutting groove is limited at the diagonal position and is adjacent to the front electrode, and the heat effect of the resistor is correspondingly controlled, so that the heat dissipation performance is improved; according to the chip resistor, through a multi-layer protection structure formed by the first protection layer made of the glass material and the second protection layer made of the epoxy resin material, the invasion of moisture, chemical corrosion and mechanical damage is effectively prevented, the service life of the resistor in a severe environment is remarkably prolonged, and particularly, through the third protection layer made of the resin silver material, the service life of the resistor is prolonged. The anti-corrosion performance of the electrode part is enhanced, so that the resistor can keep stable electrical performance during long-time work.

The invention discloses a power type negative temperature coefficient thermistor and method for suppressing surge current, and relates to the technical field of negative temperature coefficient thermistors, the thermistor comprises a core body and pins, the pins are respectively arranged on electrodes on two sides of the core body by adopting a multi-contact-surface structure, and the pins are arranged on the two sides of the core body. The core body is made of a Mn-Co-Ni-La oxide with a nano composite gradient structure; the Mn-Co-Ni-La oxide with the nano-composite gradient structure determines the upper limits of core capabilities such as surge suppression, wide temperature stability and low power consumption of the thermistor, and the redesign of the pin is the key of performance transfer, so that the electrical properties (low contact resistance and high surge tolerance) of the Mn-Co-Ni-La oxide with the nano-composite gradient structure are not counteracted by structural defects; the arrangement of the bracket prevents the Mn-Co-Ni-La oxide with the nano-composite gradient structure from losing the effect due to heat accumulation and physical damage through thermal management and mechanical protection, and the three components supplement one another and cooperate with one another, so that the performance of the thermistor of the Mn-Co-Ni-La oxide with the nano-composite gradient structure is guaranteed.

An air cooled resistor arrangement, comprising a resistor housing comprising an air inlet, an air outlet, a first side wall extending from the air inlet to the air outlet, and a second side wall extending from the air inlet to the air outlet on an opposite side to the first side wall, a plurality of elongated resistor elements arranged in the resistor housing, each one of the elongated resistor elements extending from the first side wall to the second side wall, wherein the plurality of elongated resistor elements is arranged in columns along a direction between the air inlet and the air outlet, wherein each one of the plurality of elongated resistor elements is arranged equidistantly to all its neighboring elongated resistor elements.

An air cooled resistor arrangement, comprising a resistor housing comprising an air inlet, an air outlet, a first inner wall extending in a direction from the air inlet to the air outlet, a second inner wall extending in direction from the air inlet to the air outlet, the first and second inner walls forming a primary air flow passage between the air inlet and the air outlet, a first outer wall extending in direction from the air inlet to the air outlet, and a first intermediate wall extending in direction from the air inlet to the air outlet, the first intermediate wall being arranged between the first inner wall and the first outer wall, and a plurality of elongated resistor elements arranged in the resistor housing, each of the plurality of elongated resistor elements comprises at its end portion an electrical connector element connectable to a source of electric power.

The invention relates to the technical field of resistors, in particular to a high-performance heat dissipation load unit which comprises an air duct, a motor fixed to the air duct, a rotating shaft installed on an output shaft of the motor, a supporting disc fixed to the rotating shaft and a plurality of supporting fan blades fixed to the supporting disc in a spaced mode in the circumferential direction. The air duct is provided with an external liquid groove, and the outer end part of each supporting fan blade is provided with an external leading-out terminal inserted into the external liquid groove; the air duct is provided with an internal liquid receiving groove; an inner leading-out terminal inserted into the inner liquid receiving groove is arranged at the inner end part of each supporting fan blade; the supporting fan blades are insulators, and the two ends of the resistance wire of each supporting fan blade are connected with the outer leading-out terminal and the inner leading-out terminal of the corresponding supporting fan blade respectively, so that the resistance wires are electrically conducted through the conductive liquid. Compared with an existing load, the heat dissipation effect is good, the wind resistance is low, and the requirement for a draught fan is lowered. Whether the group of resistance wires are used or not can be adjusted by changing whether the external leading-out terminals are immersed into the conductive liquid in the external liquid tank or not, so that the power of the whole resistor unit can be adjusted.

The utility model discloses a mounting structure of a wire wound resistor, comprising two brackets for detachably connecting with the resistor, the two brackets are symmetrically distributed along the length direction of the resistor, the brackets comprise an elastic metal sheet and a conductive cap, the upper end of the elastic metal sheet is welded and fixed to the outer side of the conductive cap, the inner side of the conductive cap is provided with an assembly cavity adapted to the resistor end cap, and the spacing between the inner walls of the assembly cavities on the two conductive caps is less than the length of the resistor. The resistor of the utility model is more convenient to replace later, saving time and effort, and the replacement efficiency is improved.

The invention relates to the technical field of intelligent resistor control, and discloses a self-adaptive temperature compensation intelligent resistor system and a control method, and the system comprises a sensor module, a temperature compensation module, a self-adaptive control module, an electromagnetic shielding structure and a power management module. By applying an advanced temperature compensation algorithm, a reasonable electromagnetic shielding design, an intelligent self-adaptive control strategy and a perfect self-diagnosis function, the stability problem caused by the fact that a traditional resistance system is affected by environmental interference and element aging is effectively solved. According to the system, the resistance drift can be controlled to be + / -0.05% within the temperature range of-40 DEG C to 125 DEG C; in the aspect of electromagnetic interference suppression, the signal-to-noise ratio can be increased by 30dB; and the element aging compensation rate exceeds 90%.

The invention provides a lightning arrester for a 10KV distribution network, and relates to the technical field of lightning arresters, the lightning arrester comprises a shell part and a core body, the shell part is provided with a cylindrical inner cavity, and the core body is arranged in the inner cavity of the shell part; the core body comprises at least one zinc oxide resistor disc and one or two discharge cavity assemblies, and by designing the structure of the core body and the design of the discharge cavity assemblies, the two ends of a cylinder structure formed by the zinc oxide resistor disc and the discharge cavity assemblies form an open-circuit state, and compared with a traditional low-energy-consumption state, the energy consumption is reduced; the lightning arrester can solve the problem that the lightning arrester is in a low-energy-consumption state for a long time, so that energy conservation is realized, and when a line bears a high-voltage state, a pole piece in the discharge cavity assembly generates a discharge effect, and the discharge cavity assembly is in a conducting state; the zinc oxide resistor disc is also in a conducting state when the circuit bears high voltage due to the characteristic that the zinc oxide resistor disc belongs to a non-linear resistor piece, so that the core body is in a conducting state, the circuit is conducted with the ground in a short time, and the purpose of protecting the power distribution element is achieved.

The invention discloses an aluminum shell heat dissipation and heating tube resistor integrated structure which comprises a heat dissipation aluminum shell, a plurality of installation cavities are formed in the heat dissipation aluminum shell, heating assemblies are installed in the installation cavities, lead terminals are installed on the heating assemblies, a closed cooling cavity is formed in the heat dissipation aluminum shell, and a resistor is arranged in the closed cooling cavity. According to the aluminum shell heat dissipation and heating tube resistor integrated structure, through the integrated fusion design of the aluminum shell and the heating tube resistor and the combination of the phase change material cooling technology, the heat dissipation bottleneck problem of a high-power resistor is solved, and the aluminum shell heat dissipation and heating tube resistor integrated structure is compact in structure and efficient in heat dissipation; the resistor is particularly suitable for high-end industrial application such as robots and new energy equipment, and is expected to replace a traditional aluminum shell resistor and an independent cooling system, the reliability of equipment is enhanced, and meanwhile, the equipment cost and maintenance requirements are reduced.

The utility model relates to the technical field of circuit elements, and specifically to a high-power plug-in alloy resistor, comprising a resistor housing, a sealing shell component, a connecting component and a heat dissipation component, wherein the heat dissipation component comprises a heat sink, a resistor core, an insulating sheet and quartz sand, wherein the heat sink is fixedly mounted in the resistor housing, the resistor core is fixedly mounted on the heat sink, the insulating sheet is fixedly mounted on the resistor core, and the quartz sand is fixedly mounted in the resistor housing, the resistor housing is welded and fixed on a circuit board through pins, and is electrically conductive through a conductive block, the resistor core emits heat during the flow of current, the emitted heat is dissipated through the heat sink, the high temperature generated by the resistor core is effectively taken away, and the performance is improved, while under the action of the insulating sheet and the quartz sand, the resistor core is protected, and the heat generated by the resistor core can be quickly conducted to the heat sink for heat dissipation, thereby effectively dissipating the generated heat and improving the service life of the resistor.

The present invention relates to the field of resistor technology, and in particular to a sandwich resistor, comprising a supporting module and a resistor unit, wherein the resistor unit comprises a plurality of resistor sheets and a plurality of insulating separator sheets which are sequentially spaced and stacked, wherein a transition hole is provided at a position close to an end of the insulating separator sheet, and a bending section is integrally formed at the end of the resistor sheet, and the bending section passes through the transition hole and is connected to another resistor sheet, thereby electrically connecting the plurality of resistor sheets; both side surfaces of each resistor sheet are tightly covered by different insulating separator sheets, so that dust and other impurities basically do not fall onto the surface of the resistor sheet, and thus the dust and pollution prevention level is high; there is no deformation space for the resistor sheet in the arrangement direction, so the resistor sheet will not deform at all after power is turned on, and different resistor sheets will not move close to each other, so the structure is stable and the insulation performance is good.

The application discloses an integrated battery thermal runaway energy-absorbing resistor and a battery pack. The integrated battery thermal runaway energy-absorbing resistor is used for being integrated on a preset component of the battery pack. The integrated battery thermal runaway energy-absorbing resistor is a laminated body, which comprises a first clamping plate, a second clamping plate and an energy-absorbing laminated body clamped between the first clamping plate and the second clamping plate. The energy-absorbing laminated body comprises a plurality of resistance resistance core plates arranged at intervals. The plurality of resistance resistance core plates are connected in series to form a conductive connection. Adjacent resistance resistance core plates and the energy-absorbing laminated body and the first clamping plate and the second clamping plate are separated by phase change material plates. The application can integrate the energy-absorbing resistor with other structural components in the battery pack from the structure, improve the space utilization and improve the integration degree.

A resistor assembly, in particular a resistor assembly for a power combiner, includes a resistor chip and a clamping element for fixing the resistor chip to a cooling element, the clamping element having a clamping arm that applies pressure to the resistor chip.

Electrothermal converter (ETC) for converting electrical energy into thermal energy, comprising: - a heat sink (CC) with at least one cooling channel (CC) for passing a cooling medium or at least one heat dissipation surface for transferring heat to a cooling medium that passes by the at least one heat dissipation surface; - an electrical insulating layer formed on a surface (OF1) of the heat sink (KK); - at least one heating conductor (HL) which is formed by thermal spraying on a surface (OF2) of the insulating layer facing away from the heat sink (KK); - at least two connection frames (AR1, AR2) for electrically connecting the at least one heating conductor (HL), which are spatially separated from each other and are electrically and physically connected to the at least one heating conductor (HL), characterized in that - the at least one heating conductor (HL) through thermal spraying and subsequent laser trimming is formed, and contains a chromium-nickel alloy; - where the chromium-nickel alloy contains nickel in a mass fraction of less than 10%.

The present application relates to the technical field of high-power resistor, conductive connection, electrothermal technology, and provides a production method of a high-power resistor with separated resistor sheets and the high-power resistor. The method comprises: processing a metal material through a laser device to make a resistor shell with convection heat dissipation holes; processing a plurality of cuboid-shaped resistor sheets, each resistor sheet being provided with an insulating support at an end portion and being capable of being connected in series and parallel according to resistance requirements as an independent resistance unit; and installing the resistor sheets into the shell at intervals to form a convection space of a preset height between adjacent resistor sheets, which is communicated with an external environment through the convection heat dissipation holes. The method of the present application obtains a high-power resistor composed of independent resistance units through a separated design and convection heat dissipation, effectively reduces the thermal load and energy consumption of the high-power resistor, and prolongs the service life.

The invention discloses a special-shaped precision detection resistor and production equipment thereof, and relates to the technical field of resistor production and manufacturing, the special-shaped precision detection resistor comprises an alloy red copper shell and two resistor cores arranged in the alloy red copper shell, and one side of the alloy red copper shell is provided with two leading-out ends; the lead-out end is electrically connected with the resistor core, the outer wall of the bottom of the alloy red copper shell and the outer wall of the top of the alloy red copper shell are respectively provided with a plurality of groups of heat dissipation grooves and heat dissipation assemblies which are distributed at equal intervals, and the heat dissipation mechanism is located in the alloy red copper shell and comprises two water cooling pipes. The special-shaped precision detection resistor and the production equipment thereof disclosed by the invention have the effects of improving the stability of the resistor core during use, enhancing the heat dissipation performance of the resistor core, ensuring the reliability and safety of a system, improving the working efficiency of a brake resistor, prolonging the service life of the brake resistor, controlling and reducing the thermoelectromotive force and avoiding the occurrence of a condition of overhigh parasitic inductance.

A demister heater comprising a tubular heater body (10) comprising a spirally wound electrical conductor (30) embedded in a tube of high thermally conductive resin (32), the tubular body sized to fit within a demister tube through which air passes.

The application provides a double-row lead frame resistance. The double-row lead frame resistance comprises a lead frame, a resistance, and the two ends of the first coil and the second coil are respectively installed with the lead wires; a protective cover; a cooling mechanism, the inside of the protective cover is fixedly connected with the supporting rod, the bottom end of the supporting rod is installed with the air bag; the top end of the supporting rod is internally installed with the fixed block and the fixed frame, the inside of the fixed block is slidably connected with the piston, the inside of the piston and the fixed block is respectively installed with the magnetic ring, the magnetic rings are attracted to each other; the inside of the fixed frame is slidably connected with the sliding rod, the sliding rod is fixedly connected with the piston, the side wall of the sliding rod is sleeved with the spring, and the two ends of the spring are respectively connected with the fixed frame and the piston; a cooling mechanism; a connecting mechanism. The double-row lead frame resistance provided by the application has the advantages of eliminating the self-induction of the coil, reducing the eddy current, and facilitating the dissipation of the heat inside the coil.

The utility model relates to a liquid cooling power resistor, which comprises a shell, a tubular power resistor, a flange plate, a flange sealing cover, a connecting sheet and cooling liquid, the tubular power resistor is arranged in the shell, two ends of the tubular power resistor are led out and fixed on the flange plate, the flange plate is connected on the flange sealing cover, and the flange sealing cover is connected with the shell. The connecting piece is installed on the flange sealing cover and connected with the power resistor, and the shell is filled with the cooling liquid. Compared with the prior art, the tubular power resistor is arranged in the shell filled with the cooling liquid and is sealed through the flange plate and the sealing flange cover, so that the sealing performance is good, and the size is small; the U-shaped tubular power resistors which are arranged in a crossed manner are adopted, and a liquid outlet pipeline and a liquid outlet in the sealing flange cover are integrally designed, so that the space of an inner cavity is effectively utilized, the heat exchange efficiency is high, and the structure is compact; the shell is of a Teflon or aluminum casting integrated structure, and has the advantages of high and low temperature environment resistance, cooling medium resistance, excellent pressure bearing performance and the like.

A circuit protection device is disclosed, comprising: a housing; a negative temperature coefficient thermistor, which is accommodated in the housing and includes a resistance heating element, a pair of electrodes mounted on both sides of the resistance heating element, and a first thermistor lead and a second thermistor lead respectively drawn out from the pair of electrodes; and a fuse, which is accommodated in the housing and includes a fuse body, and a first fuse lead and a second fuse lead respectively connected to both ends of the fuse body. Here, the fuse body includes a fuse rod having a plating layer formed thereon and a pair of fuse caps coupled to both ends of the fuse rod and having conductivity, and the first fuse lead and the second fuse lead are respectively joined to the pair of fuse caps.

A quench protection arrangement for a superconducting magnet is disclosed. The arrangement comprises: a superconducting magnet comprising a plurality of magnet sections; a plurality of varistors, wherein each of the plurality of varistors is electrically connected in parallel across a respective one of the plurality of magnet sections; and a heater arrangement electrically connected to the plurality of varistors and configured to apply heat to each of the plurality of magnet sections in response to a change in a voltage across any one or more of the plurality of varistors. A method of protecting a superconducting magnet is also disclosed.

A battery pack according to one embodiment of the present invention includes: a battery module in which a plurality of battery cells are mounted; and a discharge member electrically connected to the battery module, wherein the discharge member includes: a frame member having an open upper portion and containing coolant; a top cover for covering the upper portion of the frame member; and a resistor mounted in the frame member, wherein both ends of the resistor are exposed to the outside of the discharge member and electrically connected to the battery module.

The utility model discloses a high-temperature-resistant winding resistor device which comprises a ceramic winding reel, two ends of the ceramic winding reel are fixedly connected with pin caps, the circumferential outer wall of the ceramic winding reel is connected with a resistance wire in a winding mode, a contact pin is arranged between the ceramic winding reel and the pin caps in a penetrating mode, the outer side of the resistance wire is sleeved with an insulating shell, and the outer side of the insulating shell is sleeved with an insulating sleeve. A plurality of heat dissipation fins are clamped on the outer wall of the circumference of the insulating shell, and a plurality of heat dissipation holes are formed in the circumference of the insulating shell. According to the utility model, heat generated by the resistance wire is efficiently transmitted to the insulating shell through the insulating heat-conducting glue, and then is dissipated into the air through the heat dissipation fins, so that the resistance wire is subjected to heat dissipation and cooling at a high speed, and meanwhile, the heat of the resistance wire is dissipated from the heat dissipation holes, so that the resistance wire is better subjected to heat dissipation and cooling, and the service life of the resistance wire is prolonged. Therefore, the resistance device is prevented from generating stress due to high-temperature expansion, the resistance wire is prevented from loosening and deforming, and the precision and stability of the resistor are prevented from being reduced.

The invention relates to an electronic device comprising: - a component having a resistance (R120) with a negative temperature coefficient, and - a temperature control means having an electrical resistance (R130) varying as a function of the temperature T such that the sum of the total resistance (R) is, on a second temperature subrange (302), greater than a setpoint temperature (305), strictly greater than the total resistance (R) at the setpoint temperature (305).

The utility model belongs to the technical field of electronic product production, and particularly relates to a quick-response overcurrent protection component which comprises a PPTC composite chip and a heating component, the heating component comprises a heating layer, an FR4 substrate and a first copper foil layer which are arranged in sequence, the heating layer is conducted with the first copper foil layer through a conducting hole, and the FR4 substrate is connected with the first copper foil layer through the conducting hole. And a partial region of the heating layer and a partial region of the PPTC composite chip are welded and connected through the tinned conduction layer. Compared with the prior art, the utility model adopts a series connection structure for connection, the electrical function of the product is realized, when the current exceeds the rated working current or reaches the fault current, the heating layer can quickly heat and transfer the heat to the PPTC main body layer, and the PPTC main body layer receives the heat from the heating layer besides the heat generated by the PPTC main body layer, so that the electrical function of the product is realized. When a fault occurs, the resistance value is prompted to quickly enter a high resistance state from a low resistance state and enter safety protection, the loop current is reduced, the heating output of the heating layer is stopped due to the current reduction, but the PPTC main body layer continues to keep the high resistance state for safety protection by means of the protected residual current until the fault is removed.

The utility model provides a chip resistor. The chip resistor comprises a substrate, a back electrode, a front electrode, a resistive layer, a protective layer and a side electrode, the protective layer comprises a first protective layer and a second protective layer; the first protective layer is made of a glass material, and the second protective layer is made of at least two layers of epoxy resin materials; a third protective layer is formed on the left electrode and the right electrode which are not covered, and the third protective layer is made of a resin silver material; through a multi-layer protection structure formed by the first protection layer made of the glass material and the second protection layer made of the epoxy resin material, invasion of moisture, chemical corrosion and mechanical damage is effectively prevented, the service life of the resistor in a severe environment is remarkably prolonged, and particularly, through the third protection layer made of the resin silver material, the service life of the resistor is prolonged. The anti-corrosion performance of the electrode part is enhanced, so that the resistor can keep stable electrical performance during long-time work.

The utility model relates to a resistor box body, in particular to a heat dissipation window for the resistor box body, which solves the problems that the open-air environment is not considered in the design of the heat dissipation window of the existing resistor box body, and sand and dust are easy to gather in an air duct of the heat dissipation window, so that the through-flow area is reduced, and the heat dissipation is influenced. The projection parts of the second vertical sections of the S-shaped shutter strips located at the top and the projection parts of the first vertical ends of the S-shaped shutter strips located at the bottom in the plane where the first vertical sections or the second vertical sections are located coincide; the two flow guide plates guide the hot air to enable the hot air to flow to the outside, if external sand and dust enter the resistance box, the sand and dust need to move upwards against the gravity, the flow guide plates block the sand and dust, part of the sand and dust can fall on the second flow guide plate, and the included angle between the first flow guide plate and the first vertical section is 100-170 degrees; and the included angle between the second guide plate and the second vertical section is 100-170 degrees, so that a large amount of dust cannot be gathered, and smooth through-flow is ensured.

The utility model relates to the technical field of alloy resistors, in particular to an efficient heat dissipation alloy resistor. The alloy resistor comprises a mounting assembly, and further comprises a clamping assembly, a cooling assembly, an auxiliary assembly, a heat dissipation assembly, a resistor body and a circuit board, a mounting assembly is arranged above the circuit board, a resistor body is arranged in the mounting assembly, a clamping assembly with a clamping function is arranged above the mounting assembly, a cooling assembly with a cooling function is arranged on one side of the mounting assembly, an auxiliary assembly is arranged in the mounting assembly, and a heat dissipation assembly with a heat dissipation function is arranged on the side wall of the resistor body. According to the alloy resistor, air is cooled through the device, ventilation and heat dissipation are conducted on the resistor through the device, and therefore the purpose of efficient heat dissipation is achieved.