9results about How to "Avoid thermal damage" patented technology

The utility model discloses a terminal protection device and a terminal, and belongs to the technical field of terminals. A first position of an antenna section in the terminal is connected with a grounding switch in the protection device, and the first position is located at a non-endpoint position of the antenna section; the protection device obtains the use condition of the antenna section, wherein the use condition comprises power and / or temperature; and under the condition that the use condition meets an antenna protection condition, the grounding switch is switched on to change the working frequency of the antenna section, and the antenna protection condition comprises that the power exceeds a power threshold value and / or the temperature exceeds a temperature threshold value. Namely, the grounding switch is connected to the first position of the antenna section in the terminal, so that the grounding switch is switched on under the condition that the terminal needs to be protected, the working frequency of the antenna section is changed, the resonance state of the antenna section is broken, the antenna section is prevented from being coupled with high-intensity electromagnetic waves, and the antenna section is prevented from being heated and damaged.

The invention relates to the technical field of automobile production and manufacturing, in particular to a suspension spot welder switch linkage mechanism which comprises a lever structure and a transmission structure. The lever structure is arranged on the suspension spot welding machine, and when the operation end is close to or far away from the suspension spot welding machine, the driving end is far away from or close to the suspension spot welding machine; the transmission structure is rotationally arranged on the driving end; two connecting ends are arranged on the transmission structure; the two connecting ends are connected with a water unit and an electric unit of the suspension spot welding machine correspondingly, and the water unit and the electric unit of the suspension spot welding machine are driven to be opened or closed through movement of the two connecting ends. And switches of the water unit and the electric unit can be simultaneously driven to be turned on or off. And the operation process that an operator omits to turn on a switch of a water unit after turning on a switch of an electric unit is avoided, so that the electrode stem is maintained to be cooled when the suspended spot welding machine is used, the electrode stem is prevented from being overheated, the welding spot quality of welding is ensured, and the cable is prevented from being heated and damaged. In addition, the structure is simple, and installation and implementation are convenient.

The present application relates to the technical field of automatic cutting equipment control, and discloses a cutting control method and system for an automatic cutting bubble press, the method comprising collecting resistance data and material surface signals by a sensor array, determining material hardness and toughness through sensor fusion and neural network after synchronous denoising processing, calculating depth adjustment increment in combination with cutter parameters when exceeding the limit, optimizing cutting speed in combination with thermal and cutting force parameters through synchronous simulation, forming a comprehensive scheme, feeding back evaluation accuracy, optimizing physical properties when not meeting the standard, and iteratively determining final parameters to realize stable cutting. The method can adapt to material characteristic fluctuations in real time, suppress thermal and cutting force abnormalities, improve cutting stability and accuracy, reduce waste rate and cutter wear, and ensure consistency and production efficiency of complex material processing.

The invention discloses a high-fidelity audio power line and a preparation method thereof. The power line is prepared by coating a plurality of metal copper wire cores with a PVC insulation layer, and coating a protective shell on the outside of the PVC insulation layer. The protective shell comprises the following raw materials in parts by weight: 100-120 parts of PVC masterbatch, 4-6 parts of flame retardant, 4-6 parts of heat stabilizer, 0.2-0.5 parts of antioxidant and 30-40 parts of plasticizer. When the flame retardant is burned, organic phosphorus is contained in the molecule, and phosphoric acid, polyphosphate and other substances can be formed during combustion. The formation of a carbon layer is accelerated by catalyzing the dehydration and decomposition of a polymer. Nitrogen and boron elements are contained, and the compactness of the carbon layer can be increased. Meanwhile, transition metal cobalt is contained, and the emission of smoke can be reduced, so that the power line is prevented from burning due to a short circuit. A large amount of polyurea structures are contained in the heat stabilizer. The nitrogen atoms in the polyurea structures can replace unstable Cl atoms in PVC, thereby increasing the stability of the PVC molecular chain.

The present disclosure relates to the field of photovoltaics, and provides a photovoltaic module which can at least improve output power and reliability. The photovoltaic module comprises a main busbar, a first part, a first bypass structure and a second part. The main busbar comprises a first polarity node and a second polarity node; the first part comprises a first cell string group unit and a second cell string group unit connected in series, the first cell string group unit comprises a first cell string group and a second cell string group connected in parallel, and the second cell string group unit comprises a third cell string group and a fourth cell string group connected in parallel; the first bypass structure is located between the first cell string group unit and the second cell string group unit and is electrically connected with the main busbar, the first bypass structure comprises a first diode, the first diode comprises a first polarity end and a second polarity end, the first polarity end is electrically connected with the second polarity node, and the second polarity end is electrically connected with the first polarity node; and the second part is electrically connected with the first part through the main busbar.

The invention provides a gas engine capable of combusting hydrogen. Comprises: a cylinder liner (14); a cylinder head (15); a gas injection valve (5) for injecting hydrogen gas; gas supply passages (32, 33) for supplying hydrogen gas to the gas injection valves; a block (7) which is fixed to the upper surface (15a) of the cylinder head, into which the gas injection valve is inserted, and which is formed separately from the cylinder head; and sealing members (62, 63) for sealing a gap between the gas supply passage and the gas injection valve. The gas supply passage has a first gas supply passage (32) defined and formed inside the cylinder head, and a second gas supply passage (33) defined and formed inside the block and connecting the first gas supply passage and the gas injection valve, and the seal member is provided at a connection portion (S1) where the second gas supply passage and the gas injection valve are connected. Therefore, heat damage to the seal member can be suppressed while the gas supply passage is provided in the cylinder head.

This invention relates to the field of graphene processing technology, and more particularly to a method for low-temperature microwave exfoliation of graphene powder, comprising the following steps: dispersing natural graphite powder or expandable graphite in a solvent, wherein the solvent is selected from one of N-methylpyrrolidone, dimethyl sulfoxide, or a mixture of water and surfactant, and the mass concentration of graphite in the dispersion is 1-50 g·L. ‑1 The dispersion is pre-dispersed according to parameters determined by the optimized model, including but not limited to stirring power, ultrasonic power, and pre-dispersion time. The treated dispersion is then placed in a controllable power microwave reactor, and microwave energy is applied in pulses. The microwave power, pulse width, and number of cycles are determined according to equipment capacity and temperature control constraints. In this invention, by combining low-temperature pulsed microwaves with model-optimized pre-dispersion, graphite agglomerates are effectively reduced, thermal damage and structural defects are suppressed under controlled energy consumption and shear conditions, thereby improving the exfoliation efficiency and powder uniformity of monolayer and few-layer graphene.

This flow path forming plate is provided with: a gas passage surface; a rear end surface; a cavity into which cooling air can flow; and a cooling air passage through which the cooling air flowing into the cavity can flow. The cooling air channel is provided with a plurality of rear end spraying channels which are arranged in the side direction and open in the rear end face. And the plurality of rear-end injection channels comprise a plurality of small rear-end injection channels and a plurality of large rear-end injection channels. A part of the plurality of rear-end injection large channels among the plurality of rear-end injection large channels are disposed on the first-most side in the lateral direction and the second-most side in the lateral direction so as to be adjacent to each other in the lateral direction. And the channel sectional area of each channel in the plurality of rear-end injection large channels is larger than that of any channel in the plurality of rear-end injection small channels.

A blank mask according to an embodiment includes: a substrate; and a conductive layer disposed on the substrate, in which the conductive layer includes a first layer and a second layer having different conductivity, and the conductivity of the conductive layer is 500 S / cm to 2000 S / cm.