4results about How to "Avoid electrical connection" patented technology

This invention relates to the field of lithium battery heat dissipation technology, specifically disclosing a heat dissipation device for lithium battery packs, comprising a support plate and a top plate. The support plate and the top plate are arranged longitudinally symmetrically in parallel. Multiple sets of coaxially corresponding mounting holes 1 and 2 are arrayed along the length direction on their opposite end faces. Hollow sealing rings are fixedly installed on the inner walls of both mounting holes 1 and 2. Two symmetrically arranged side plates 1 and 2 are fixedly connected to the two side edges of the support plate and the top plate. The support plate, the top plate, the side plates 1 and 2 together form a cavity structure for accommodating the lithium battery pack and heat dissipation components. Several fan support frames are arrayed along the length direction of the side plates 1 facing the inner side of the cavity, and each of the fan support frames is equipped with a corresponding heat dissipation fan. The air outlet direction of the heat dissipation fan faces the inner cavity. This invention addresses the problem of the single heat dissipation function of lithium batteries.

The invention discloses a back contact battery and a preparation method thereof, and a photovoltaic module. The back contact battery comprises a battery body, wherein the battery body is provided with a first surface and a second surface which are oppositely arranged; the first current collection electrodes and the second current collection electrodes are arranged on the first surface, the first current collection electrodes and the second current collection electrodes are alternately arranged at intervals in the first direction and extend in the second direction, first insulation parts are arranged on the first current collection electrodes, and second insulation parts are arranged on the second current collection electrodes; the first insulating part and the second insulating part are arranged at an interval in the second direction; the first connecting conductor is arranged on the second insulating part, extends along the first direction and is electrically connected with the plurality of first collector electrodes; the first electric connection part is arranged between the first insulation part and the second insulation part and is electrically connected with the first collector electrode. By adopting the electrode structure, the design of the opening structure in the screen printing plate is facilitated, the processing steps can be simplified, and the preparation efficiency of the electrode is improved.

The application provides a display substrate and a manufacturing method and a display device. The display substrate comprises a back plate, a front body layer, and a display chip. The back plate is provided with a driving circuit. The front body layer is arranged on the back plate and comprises a conductor unit, a void and a front body. The conductor unit and the void are arranged in the front body. The display chip is arranged on the front body layer. Electrodes of the display chip are electrically connected to corresponding pads on the driving circuit through the conductor units. The application can improve the short circuit or open circuit phenomenon of the display chip caused by the warping of the transfer substrate.

The present application relates to the technical field of direct current power management and fault monitoring, and discloses a multi-dimensional abnormal early warning monitoring method and system in direct current power management, comprising: configuring a passive induction sheet in the center area of the top surface of the explosion-proof valve of the electrolytic capacitor in the direct current power supply; determining a signal acquisition pair between the passive induction sheet and the cathode of the electrolytic capacitor, and connecting a negative bias ADC channel and a polarity ADC channel in parallel on the signal acquisition pair; monitoring the negative direct current bias signal and the polarity inversion signal of the signal acquisition pair through the negative bias ADC channel and the polarity ADC channel respectively; analyzing the monotone increasing trend of the negative direct current bias signal and the relaxation time of the polarity inversion signal respectively; and realizing early failure warning of the electrolytic capacitor in the direct current power supply based on the monotone increasing trend and the relaxation time. The present application can realize long-term, online and non-interference early warning of the early failure phenomenon of the electrolytic capacitor in the direct current power supply under real working conditions.