US 2017/0288422 A1Published application

Charge equalization apparatus for a battery string

AssigneeSK Innovation Co., Ltd.

InventorsJeong Hwan YANG, Gun-Woo MOON, Chol-Ho KIM, Moon-Young KIM

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Abstract

Provided are a charge equalization apparatus for a battery string. According to the exemplary embodiments of the present invention, the charge equalization apparatus are modularized by being divided into the master unit and the slave unit, such that the charge equalization apparatus may be expanded and contracted independent of the number of batteries, the circuits are separated for each module, such that the circuits may be easily implemented, and when the circuits are damaged, only the damaged module is replaced, such that the effective countermeasure may be performed.

Claims8

Dependent claims

A charge equalization apparatus for a battery string, comprising:

two or more detachable battery modules, each of the two or more detachable battery modules comprising:
two or more battery cells;
a switch block unit configured to switch the two or more battery cells;
a module switch unit configured to select the switch block unit;
and a battery monitoring unit configured to monitor the two or more battery cells and measure a cell potential of each of the two or more battery cells to transmit information on the cell potential;
a control unit configured to receive the information from the battery monitoring unit, compare the information with a prestored reference value so as to determine whether charges of the two or more battery cells are equalized, and transmit a control signal to the battery monitoring unit;
and
a equalization converter configured to perform a charge equalization by charging or discharging the two or more battery cells,
wherein the battery monitoring unit controls operations of the switch block unit and the module switch unit according to the control signal.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/495,592Filed 24 Apr 2017
Priority: 22 Oct 2013
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H02J 7/52
Acting upon multiple batteries simultaneously or sequentially: for charge balancing, e.g. equalisation of charge between batteries
H01M 10/441
Methods for charging or discharging: for several batteries or cells simultaneously or sequentially
H01M 10/482
Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte:…
H02J 7/56
For charge balancing, e.g. equalisation of charge between batteries: active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters

Family

Application14/113,257Division · filed 22 Oct 2013
Application15/495,592Division
US 10,680,447 B2Related patent
US 2014/0042974 A1Published application
US 2017/0288422 A1This patent

From the US filing history. Foreign family members aren’t listed.

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