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Sampling-free automatic equalizing apparatus for batteries

An automatic equalization, non-sampling technology, applied in battery circuit devices, circuit devices, charge equalization circuits, etc., can solve problems such as increasing the complexity of system software and hardware, and achieve reduced software and hardware complexity, high portability, real-time Adjust the effect of equalizing current

Inactive Publication Date: 2016-07-06
HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to sample the battery voltage and transmit the sampling results to the battery management system for equalization control, which will increase the complexity of the system's software and hardware.

Method used

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  • Sampling-free automatic equalizing apparatus for batteries

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Embodiment Construction

[0008] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0009] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of the non-sampling battery automatic balancing device of the present invention. The non-sampling battery automatic balancing device includes a main circuit 10, a differential pressure detection unit 20, and a negative feedback control system, and the negative feedback control system includes a positive error comparison unit 31 and a negative error comparison unit 32; the main circuit 10 includes a charging circuit U, a first unit battery U 1 , the second single battery U 2 , inductor L, first control switch S 1 , ...

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Abstract

The invention relates to a sampling-free automatic equalizing apparatus for batteries. The apparatus comprises a main circuit, a voltage difference detection unit and a negative feedback control system, wherein the negative feedback control system comprises a positive error comparison unit and a negative error comparison unit. The invention provides the sampling-free automatic equalizing apparatus for the batteries; the voltage of the single battery does not need to be sampled by a voltage sensor; instead, the automatic equalizing of the two adjacent single batteries is realized through an analog circuit; in addition, equalizing current can be adjusted in real time, and the magnitude of the equalizing current is decreased with the decreasing of the inconsistency of the two adjacent single batteries in the equalizing process, so that the equalizing reliability is improved; by adoption of the apparatus, a voltage sampling link and a battery management system control link for the single batteries are omitted, so that the software and hardware complexity of the system is reduced, and high transportability is realized; in addition, the automatic equalizing of the two adjacent single batteries can be realized; the equalizing current can be adjusted in real time; and the equalizing reliability is improved.

Description

technical field [0001] The invention relates to an automatic balancing device for a non-sampling battery. Background technique [0002] The voltage of a single battery is low. In order to adapt to different working occasions, it is necessary to connect multiple batteries in series to work, and the difference between battery cells leads to unbalanced charging and discharging in series. The conventional inductance-based equalization method mainly uses a voltage sensor to detect the voltage of two adjacent cells in a series battery pack, discharges the cell with a higher voltage, and uses the inductance to transfer energy to the cell with a lower voltage. middle. This method needs to sample the battery voltage and transmit the sampling result to the battery management system for equalization control, which will increase the complexity of the system's software and hardware. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0014
Inventor 陈曦吴泽勇
Owner HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER
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