Battery Energy Saving Charging Method

Abstract

The invention relates to the technical field of accumulator charging, and improves the accumulator charging method to greatly save power consumption. The charging method of the present invention is to connect the same poles of two battery packs to form a battery string with both ends being the same pole. The two ends of the battery string are respectively the first end and the second end, and then use the charger The charging output terminal of the battery is loaded on the first terminal and the second terminal of the battery string for charging. The charging method is: connect the positive charging output terminal of the charger to the first terminal of the battery string, and connect the negative charging output terminal to the battery The second end of the battery string is charged in the first flow direction, and the negative charging output terminal of the charger is connected to the first end of the battery string, and the positive charging output terminal is connected to the second end of the battery string for the second flow direction. The charging process, and the charging process of the first flow direction and the charging process of the second flow direction are repeated and alternated for many times. The invention is applied to storage battery formation charging.

Description

technical field [0001] The invention relates to the technical field of accumulator charging, and improves the accumulator charging method to greatly save power consumption. Background technique [0002] There is a key process in the production process of secondary batteries called formation, which is divided into two methods: "internal formation" and "external formation". Formation is a cycle of overcharging, discharging, and overcharging the raw or cooked plates in the battery. Regardless of lead-acid batteries, lithium batteries or such batteries containing polar plates and chemical substances, they must go through the formation process to achieve a long service life. [0003] Take the lead-acid battery as an example: the externalized power of the maintenance-free lead-acid raw plate is about 7 times the rated capacity, and the power consumed by the initial charge after the raw plate is turned into a cooked plate is about 4 times the battery capacity. times. It takes so...

AI Technical Summary

Problems solved by technology

Therefore, this method is rarely used

[0005] The second method: use silicon controlled rectifier and transformer circuit to convert direct current into alternating current and return it to the grid. However, the technology of silicon controlled rectifier inverter and return to the grid greatly interferes with the grid, and the efficiency of returning to the grid is generally less than 50%.

This method can make full use of electric energy, but the biggest problem with the DC bus is that it is difficult to distribute the discharge current reasonably, and there are many disadvantages in the distribution within the machine or between the networks.

Among them, when the discharge current is greater than the charge current, the excess energy cannot be released, and the electric energy needs to be wasted by resistive discharge. Furthermore, due to the complexity of the circuit and the high cost, it cannot be widely used.

[0007] The fourth method: store the discharged battery in a large-capacity battery pack, and then use the power in the large battery pack as a whole. This method requires a lot of investment in equipment, and few people use it.

[0008] In addition to the above four methods, there are also people who directly use the discharged electric energy to use DC power or other places where DC power is required, but because battery manufacturers rarely use DC equipment in large quantities, it is difficult to achieve

[0009] In addition, the applicant has retrieved a large number of documents, all of which are to improve the charge and discharge time in the formation process to improve the effect and efficiency of the formation, such as the charging and discharging method, the formation method and the formation device, or the patent publication number is CN 1632981, a kind of rapid formation and activation method of lead-acid battery, etc., and no technical solution has been found to improve the storage battery charging method of the formation process so as to reduce the consumption of electric energy in essence.

Images