7results about How to "Increase charging current" patented technology

This invention discloses a low-temperature negative electrode lead paste formulation and its preparation method. The raw materials are as follows by weight percentage: lead powder: 82%-88%, barium sulfate: 5%-12%, sodium lignosulfonate: 0.2%-1.0%, humic acid: 0.5%-1.0%, carbon black: 1%-2%, expanded graphite: 1%-2%, graphene: 0.5%-1.5%, and deionized water: balance. A mixture of spherical lead powder and flake lead powder (spherical powder accounting for 60%-70%) is used. The high specific surface area of ​​the spherical lead powder improves the wettability of the electrolyte, while the layered structure of the flake lead powder increases the porosity. The synergistic effect of these two materials increases the porosity of the negative electrode active material to 65%-70% (compared to approximately 55%-60% in traditional lead paste), accelerating the dissolution of lead sulfate and the diffusion of Pb²⁺.

This invention relates to a battery charging method and system, belonging to the field of battery charging technology. It includes a constant current charging stage and a constant voltage charging stage. The battery charging method includes: obtaining the highest temperature T1 during the constant current charging stage; calculating the target control temperature T2 of the battery during the constant voltage charging stage, the calculation formula for the target control temperature being: [formula missing], where [value missing] is a trade-off parameter between charging speed and cell temperature, 0 < [value missing], and [value missing] is the current charging ambient temperature; when the battery is in the constant voltage charging stage, the temperature of the cell is controlled so that the cell temperature T satisfies the following relationship: T2 ≤ T ≤ T1. This invention increases the average temperature of the cell during the constant voltage charging stage by heating the cell, reduces cell polarization, increases the charging current during the constant voltage charging stage, and improves the charging speed.

The present invention discloses a charging plug, a charging gun and a connector assembly, and relates to the field of ground maintenance technology. Among them, the fluid channel, the fluid flow cavity and the fluid interface defined by the charging plug are conducive to conveniently connecting with the cooling circuit of the external device for thermal management; the number of the charging harness and the charging terminal to be cooled is consistent and correspondingly connected, and at least one of a part of the charging terminal to be cooled and a part of the charging harness is arranged in the fluid flow cavity, so that the charging terminal to be cooled or the charging harness near the plug position can be cooled through the fluid flow cavity, which is conducive to improving the overall charging current or charging power. The body pressure relief channel on the plug body is connected to the fluid flow cavity, and the body pressure relief channel is configured to be openable and closable, so that when the liquid circuit is blocked or an instantaneous high pressure is formed, the pressure can be relieved by opening the body pressure relief channel, reducing the risk of damage to the cooling circuit of the charging plug and the external device.

The utility model provides an automatic charging device. The automatic charging device comprises a charging gun; an automatic charging system; the liquid cooling system comprises a cold source and a cooling pipe, the cold source is used for providing cooling liquid, and the cooling liquid cools a gun line and a gun head of the charging gun through the cooling pipe and then flows back to the cold source; and the gun line management device is used for arranging line passing fulcrums for gun line suspension. The liquid cooling system can provide a cooling function for the gun line and the gun head of the charging gun during charging, so that the charging current and the charging power of the automatic charging device can be improved, high-power charging is realized, a proper line passing fulcrum is provided for the gun line by arranging the gun line management device, and the charging efficiency is improved. The gun line and the cooling pipe have enough bending radiuses under any charging working condition, so that the gun line and the cooling pipe can move and bend orderly and reasonably in the charging action process, and the problems that the gun line is abraded and the cooling liquid flow is blocked due to the fact that the gun line is mopped to the ground and is bent sharply can be solved.

The utility model discloses a water-cooling charging pile cable, which comprises a group of power wire cores, and is characterized by further comprising a signal wire core, a group of control wire cores, a liquid cooling pipe, a shielding layer and an outer sheath. The power wire cores are divided into three types, namely a main power wire core, a second main power wire core and a third main power wire core. The main power wire core, the second main power wire core, the third main power wire core, the signal wire core, the control wire core and the liquid cooling pipe are twisted to form a cable, and then tinned copper wires are braided outside to form a shielding layer, wherein the braiding density is greater than 80%. And the outer sheath is made of a PET material and is extruded outside the shielding layer.

The embodiment of the invention provides a multi-device power supply adjusting method and device based on a power management system, and the method comprises the steps: detecting whether a charging current remains in the power management system or not when the battery power of a local device is detected to be lower than a first preset battery power; and if not, respectively sending a charging current abdicating request to other mining intrinsic safety type amplified phone equipment in the power management system, so that other mining intrinsic safety type amplified phones with sufficient electric quantity in the power management system improve the charging current of the equipment in a mode of abdicating part of the charging current. And when it is detected that the battery electric quantity of the local equipment is higher than the second preset battery electric quantity, part of charging current is actively made to charge other mining intrinsic safety type amplified phones needing electricity in the power management system. According to the embodiment of the invention, all mining intrinsically-safe amplified phones can be ensured to keep sufficient electric quantity when needed, and meanwhile, the waste of resources is avoided.

The invention discloses a switched capacitor charging circuit which is configured to charge a first battery, the switched capacitor circuit comprises N-1 switched capacitor units which are sequentially coupled between a second port and a first port, and each switched capacitor unit comprises a flying capacitor; the first end of each first power tube is coupled to the first port, and the second end of each first power tube is coupled to one end of the different flying capacitor. When the switched capacitor circuit works in a first mode, the voltage conversion ratio of the switched capacitor circuit is N: 1, when the switched capacitor circuit works in a second mode, the voltage conversion ratio of the switched capacitor circuit is 2: 1, and when the switched capacitor circuit works in the second mode, at least one switched capacitor unit receives the voltage of the first voltage source through a first power tube coupled with the switched capacitor unit and generates the voltage of the first battery, therefore, the charging current and power of the switched capacitor charging circuit are improved, and the efficiency is higher.