摘要:
Embodiments of this application disclose a wireless charging apparatus and method, and relates to the field of wireless power transmission system technologies. The apparatus includes a voltage conversion circuit, an excitation coil, n first resonance coils, and a controller, where n is greater than or equal to 3. The voltage conversion circuit is connected to the excitation coil and is configured to convert a power grid voltage into a high-frequency alternating current voltage; the excitation coil is configured to generate a magnetic field based on the high-frequency alternating current voltage; the n first resonance coils are arranged in different directions and are configured to conduct the magnetic field; and the controller is configured to: monitor power statuses of the first resonance coils, and enable or disable the first resonance coils based on the power statuses.
摘要:
A heat dissipation device and a radio frequency module with the same are provided. The heat dissipation device includes a substrate (1). The substrate (1) having a surface where a heat absorbing surface (5) is formed. There are multiple hollow conduits inside the substrate (1) to act as evaporating conduits (6). The heat dissipation device further comprises condensing conduits (7) intercommunicated with the evaporating conduits (6). The evaporating conduits (6) and the condensing conduits (7) form sealed conduits. The sealed conduits are filled with liquid which vaporizes upon heating. At least the evaporating conduits (6) are set in the substrate (1).
摘要:
A condenser in a gravity loop heat pipe heat sink and a method for producing the condenser are disclosed. The production method includes the following steps: squeezing a base material of a condenser to form a condenser substrate and several longitudinal channels of the condenser, where the longitudinal channels of the condenser are parallel to and thread through the condenser substrate; drilling holes at the two ends of the condenser substrate to form transverse channels of the condenser, where the transverse channels of the condenser are connected to the longitudinal channels of the condenser; and sealing ends of the longitudinal channels of the condenser and ends of the transverse channels of the condenser according to determined holes on the condenser that are connected to the outside. In this production method, the longitudinal channels of the condenser are formed by squeezing on the substrate, and the transverse channels are formed by drilling holes on the substrate. In this way, the longitudinal channels and the transverse channels are integrated and do not need to be connected in a welding manner. Therefore, no welding joints exist between the formed longitudinal channels and transverse channels of the condenser, so that sealing performance, strength, or the like, of the condenser can be ensured with relatively high operating reliability. The present invention further discloses a gravity loop heat pipe heat sink and a method for producing the gravity loop heat pipe heat sink.
摘要:
A heat dissipation device and a radio frequency module with the same are provided. The heat dissipation device includes a substrate (1). The substrate (1) having a surface where a heat absorbing surface (5) is formed. There are multiple hollow conduits inside the substrate (1) to act as evaporating conduits (6). The heat dissipation device further comprises condensing conduits (7) intercommunicated with the evaporating conduits (6). The evaporating conduits (6) and the condensing conduits (7) form sealed conduits. The sealed conduits are filled with liquid which vaporizes upon heating. At least the evaporating conduits (6) are set in the substrate (1).
摘要:
A condenser in a gravity loop heat pipe heat sink and a method for producing the condenser are disclosed. The production method includes the following steps: squeezing a base material of a condenser to form a condenser substrate and several longitudinal channels of the condenser, where the longitudinal channels of the condenser are parallel to and thread through the condenser substrate; drilling holes at the two ends of the condenser substrate to form transverse channels of the condenser, where the transverse channels of the condenser are connected to the longitudinal channels of the condenser; and sealing ends of the longitudinal channels of the condenser and ends of the transverse channels of the condenser according to determined holes on the condenser that are connected to the outside. In this production method, the longitudinal channels of the condenser are formed by squeezing on the substrate, and the transverse channels are formed by drilling holes on the substrate. In this way, the longitudinal channels and the transverse channels are integrated and do not need to be connected in a welding manner. Therefore, no welding joints exist between the formed longitudinal channels and transverse channels of the condenser, so that sealing performance, strength, or the like, of the condenser can be ensured with relatively high operating reliability. The present invention further discloses a gravity loop heat pipe heat sink and a method for producing the gravity loop heat pipe heat sink.
摘要:
Embodiments of the present invention disclose a heat dissipation device, including: a closed shell and a temperature control device. The temperature control device includes: a cold storage medium module, a first group of thermosiphons, and a second group thermosiphons; wherein the cold storage medium module is disposed at the outside of the closed shell, the first group thermosiphons are provided with a first group of evaporation ends and a first group of condensation ends, and the second group of thermosiphons are provided with a second group of evaporation ends and a second group of condensation ends; the first group of evaporation ends are disposed at the inside of the closed shell, and the first group of condensation ends are disposed in the cold storage medium module; the second group of evaporation ends are disposed in the cold storage medium module, and the second group of condensation ends are disposed in environmental air; the first group of condensation ends are disposed above the first group of evaporation ends in the direction of gravity, and the second group of condensation ends are disposed above the second group of evaporation ends in the direction of gravity. Embodiments of the present invention also disclose a communication device and a heat dissipation method for a communication device. The above technical solutions save electric energy and improve the effects of energy saving and emission reduction of the system.