Abstract:
A method for soldering a chip on a metallic-ceramic composite board is provided, the metallic-ceramic composite board comprising a ceramic substrate, a first metal plate, and a second metal plate, plate faces at two sides of the ceramic substrate being configured to be a circuit face and a non-circuit face respectively, the first metal plate being connected to the circuit face, and the second metal plate being connected to the non-circuit face, wherein the method comprises: etching the second metal plate, such that the metallic-ceramic composite board forms a bent plate shape protruding towards the side at which the non-circuit face is located; and soldering the chip on the first metal plate, so as to obtain a substantially flat-straight metallic-ceramic composite board on which the chip is soldered. In addition, a metallic-ceramic composite board for soldering a chip thereon is provided.
Abstract:
An electric heater, a defroster, a heating and air conditioning system and a vehicle are provided. The electric heater includes an outer frame (8); a heating core (100) disposed within the outer frame (8) and defining first and second ends (101,102), at least one of the first and second ends (101,102) being configured to connect to a power source; a sealing-waterproof glue member (l) disposed within the outer frame (8) and configured to encase the at least one of the first and second ends (101,102) of the heating core (100); wherein the heating core (100) includes: a plurality of heat dissipating components (3), a plurality of heating components (2), the heating components (2) and the heat dissipating components (3) being arranged alternately, adjacent heating component (2) and heat dissipating component (3) being spaced apart from each other and connected with each other via a thermally conductive silicone rubber, the heating component (2) including a core tube (21) and a positive temperature coefficient thermistor (22) disposed in the core tube (21).
Abstract:
A positive temperature coefficient heating assembly includes a heating core (10) including a first metal electrode plate (2a), a second metal electrode plate (2b) and a plurality of PTC ceramic chips (1); an insulating layer coated on the heating core (10); and a metal tube (8); the PTC ceramic chip (1) includes a positive electrode layer, a negative electrode layer, and a ceramic sintered layer; a plurality of first limit grooves (21a) are formed in the first metal electrode plate (2a), a plurality of second limit grooves (2b) are formed in the second metal electrode plate (21b), a first end of each of the PTC ceramic chips (1) is embedded in one of the first limit grooves (21a), and a second end of each of the PTC ceramic chips (1) is embedded in one of the second limit grooves (21b).
Abstract:
An electric heater, and an apparatus, a heating and air conditioning system and a vehicle, each comprising the electric heater, are provided. The electric heater comprises an outer frame; a heating core configured to connect to a power source and disposed within the outer frame; and a sealing-waterproof glue member disposed within the outer frame and configured to encase at least one end of the heating core. The heating core further comprises: a plurality of heat dissipating components and heating components arranged alternately, and each of the heat dissipating component is coupled with a heating component via a thermal conductor. Each of the heating components further comprises a core tube and a positive temperature coefficient thermistor disposed in the core tube.
Abstract:
An electric heater, and an apparatus, a heating and air conditioning system and a vehicle, each comprising the electric heater, are provided. The electric heater comprises an outer frame; a heating core configured to connect to a power source and disposed within the outer frame; and a sealing-waterproof glue member disposed within the outer frame and configured to encase at least one end of the heating core. The heating core further comprises: a plurality of heat dissipating components and heating components arranged alternately, and each of the heat dissipating component is coupled with a heating component via a thermal conductor. Each of the heating components further comprises a core tube and a positive temperature coefficient thermistor disposed in the core tube.
Abstract:
A positive temperature coefficient heating assembly includes a heating core (10) including a first metal electrode plate (2a), a second metal electrode plate (2b) and a plurality of PTC ceramic chips (1); an insulating layer coated on the heating core (10); and a metal tube (8); the PTC ceramic chip (1) includes a positive electrode layer, a negative electrode layer, and a ceramic sintered layer; a plurality of first limit grooves (21a) are formed in the first metal electrode plate (2a), a plurality of second limit grooves (2b) are formed in the second metal electrode plate (21b), a first end of each of the PTC ceramic chips (1) is embedded in one of the first limit grooves (21a), and a second end of each of the PTC ceramic chips (1) is embedded in one of the second limit grooves (21b).