Electric energy storage apparatus, voltage equalization module and voltage equalization method
A storage device and voltage equalization technology, applied in charge equalization circuits, circuit devices, battery circuit devices, etc., can solve the problems of low reliability of electric energy storage devices, shortened battery life, voltage deviation, etc.
Inactive Publication Date: 2013-01-09
SAMSUNG ELECTRO MECHANICS CO LTD
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Problems solved by technology
[0007] However, since multiple supercapacitors are connected in series, due to the capacitance deviation, initial voltage deviation, leakage current deviation, resistance deviation, and capacity reduction rate deviation over time between each unit battery (that is, each super capacitor), each There will be a voltage deviation between the unit cells, and the voltage between the cells is not uniform
Specifically, when the voltage of each battery is out of an appropriate range, the life of the battery is shortened, or the battery is damaged, thereby reducing the reliability of the electric energy storage device
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[0071] Furthermore, according to another exemplary embodiment of the present invention, the first bypass discharge unit 50 is configured to include a switching device 51 , a switching device 51 a and a first discharging resistor 53 . In this case, the switching device 51 and the switching device 51a may be MOSFETs.
[0072] Also, the second bypass discharge unit 70 is also connected to the electric energy storage unit 10 in parallel. In this case, according to the control signal of the control unit 90, the second bypass discharge unit 70 bypasses the electric energy storage unit 10 whose charging voltage does not drop below the discharge stop reference voltage after the first bypass discharge unit 50 is discharged. charged electrical energy, and perform an additional discharge.
[0073] According to an exemplary embodiment of the present invention, the second bypass discharge unit 70 is configured to include a voltage detector 71 a and a second discharge resistor 73 .
[007...
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Disclosed herein are an electric energy storage apparatus, a voltage equalization module thereof, and a voltage equalization method. There is provided an electric energy storage apparatus, including: a plurality of electric energy storage cells connected in series; voltage sensing units sensing voltage charged in each of the electric energy storage cells, respectively; first bypass discharge units connected to each of the electric energy storage cells in parallel, respectively, and bypassing and discharging electric energy charged; second bypass discharge units additionally connected to each of the electric energy storage cells in parallel, respectively, and bypassing and additionally discharging electric energy; and a control unit receiving voltage information from the voltage sensing units, determining whether controlling or not and controlling operations of each of the first and second bypass discharge units so as to equalize charged voltage values of the electric energy storage cells.
Description
[0001] Cross References to Related Applications [0002] This application claims Korean Patent Application No. 10-2011 filed on July 8, 2011, entitled "Electric Energy Storage Apparatus, Voltage Equalization Module THEREOF and Voltage Equalization Method" - the benefit of number 0067896, the entire contents of which are incorporated into this application by reference. technical field [0003] The invention relates to an electric energy storage device, its voltage equalization module and a voltage equalization method. More particularly, the present invention relates to an electric energy storage device having two bypass discharge circuits for efficiently performing voltage equalization at the time of high-speed charge and discharge, a voltage equalization module thereof, and a voltage equalization method. Background technique [0004] Representative examples of electrical energy storage devices may include batteries and capacitors. The specifications of the capacitor (for e...
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IPC IPC(8): H02J15/00H02J7/00
CPCY02E60/12H02J15/00Y02E70/10Y02E70/30H02J7/00B60L2240/545B60L2240/547B60L2240/549B60L50/40B60L58/22B60L58/40H02J7/0016H02J2310/48Y02E60/10Y02T10/70G01R31/36H01M10/44Y02T90/40
Inventor 郑永学郑玄喆金倍均尹灿
Owner SAMSUNG ELECTRO MECHANICS CO LTD