Electric power communication power supply battery pack dynamic equalization method and device
A technology of dynamic balancing and power communication, applied in battery circuit devices, circuit devices, charge balancing circuits, etc., can solve the problems of life reduction, inability to further extend battery life, battery capacity loss, etc., to avoid overcharging, eliminate The effect of the barrel effect
Pending Publication Date: 2021-04-13
GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION +1
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Problems solved by technology
The inconsistency of the monomers is transmitted to the battery pack, which will inevitably lead to the loss of battery pack capacity, which in turn will lead to a decrease in service life.
Studies have shown that a 20% difference in the capacity of a single cell will cause a 40% capacity loss in the battery pack
[0003] In the process of production and use of lead-acid batteries, in principle, the consistency maintenance problem must exist. The methods usually adopted at home and abroad to solve the consistency of lead-acid batteries are passive equalization and active equalization technology. One of the methods is through The battery management system balances the battery cells, but the general equalization method cannot further extend the life of the battery pack
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[0013] In order to make the purpose, technical solution and advantages of the present invention more clear and definite, the content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.
[0014] Lead-acid batteries have the best working voltage, overvoltage value, overcharge voltage, undercharge voltage, and overdischarge voltage. At 25°C, the float charge voltage is 2.23V, the life is the longest, and the float charge voltage is related to the corrosion rate and vulcanization rate. If the voltage is too high, the corrosion of the plate will be accelerated, and if the voltage ...
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The invention discloses an electric power communication power supply battery pack dynamic equalization method and device. The method comprises the following steps: collecting the single voltage of each single battery in a battery pack in an operation process of the battery pack, calculating the average voltage of the single batteries according to the single voltage of each single battery and the sum of the single voltage sets, screening out the single voltage closest to the average voltage from the single voltage sets to serve as the reference voltage, comparing the single voltages in the single voltage sets with the reference voltage, judging the instantaneous corresponding states of the single batteries, controlling the input switch state of each corresponding single battery according to the state, and carrying out uniform processing on each single battery. The method and the device have the beneficial effects that the voltage of each single battery is subjected to consistency adjustment, so that the single batteries work in a safe voltage range, and overcharge, undercharge and overdischarge of the single batteries are avoided.
Description
technical field [0001] The invention relates to the technical field of battery equalization, in particular to a method and device for dynamic equalization of a power communication power supply battery. Background technique [0002] The balance (consistency) of communication power supply series battery packs has long been a worldwide problem. The differences in manufacturing and use have caused the natural inconsistency of battery cells. The inconsistency is mainly manifested in the monomer capacity, internal resistance, self-discharge rate, charge and discharge efficiency, etc. The inconsistency of the monomers is transmitted to the battery pack, which will inevitably lead to the loss of the capacity of the battery pack, which in turn will lead to a decrease in service life. Studies have shown that a 20% difference in the capacity of a single cell will cause a 40% capacity loss in the battery pack. [0003] In the process of production and use of lead-acid batteries, in pr...
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IPC IPC(8): H02J7/00
CPCH02J7/0016H02J7/0019H02J7/0029H02J7/00302H02J7/00306H02J7/0069
Inventor 杨建新刘淼高雪飞程飞
Owner GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION