KR20170115322A - Capacitor management system - Google Patents

Capacitor management system Download PDF

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Publication number
KR20170115322A
KR20170115322A KR1020160042828A KR20160042828A KR20170115322A KR 20170115322 A KR20170115322 A KR 20170115322A KR 1020160042828 A KR1020160042828 A KR 1020160042828A KR 20160042828 A KR20160042828 A KR 20160042828A KR 20170115322 A KR20170115322 A KR 20170115322A
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KR
South Korea
Prior art keywords
hybrid capacitor
parallel
hybrid
voltage
mosfet
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KR1020160042828A
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Korean (ko)
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KR101837548B1 (en
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오영주
윤중락
맹주철
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삼화콘덴서공업주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/20—Arrangements for preventing discharge from edges of electrodes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/16—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for capacitors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present invention relates to a CMS that can be managed even when a cell is charged at a high voltage and discharged at a low voltage among cells included in the hybrid capacitor module, and more particularly, to a hybrid capacitor module in which a plurality of hybrid capacitors are connected in series and in parallel to each other. And a plurality of cell balancing circuits connected in parallel with the hybrid capacitors to sense charging / discharging states of the hybrid capacitors, wherein the plurality of cell balancing circuits are respectively connected in parallel with the hybrid capacitors, A high voltage sensing circuit connected in parallel with each of the hybrid capacitor and the overvoltage discharge circuit to sense that the hybrid capacitor is charged with a high voltage, and a high voltage sensing circuit connected in parallel with the hybrid capacitor and the high voltage sensing circuit, And a low voltage sensing circuit for sensing that the voltage is discharged to a low voltage.

Description

[0001] DESCRIPTION [0002] Capacitor management system [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor management system (CMS), and more particularly, to a CMS that can be managed at high voltages and at low voltages among cells included in a hybrid capacitor module.

Super capacitors are used as auxiliary energy storage devices and are used to extend battery life and improve the efficiency of electrical energy systems. In particular, supercapacitors are used as auxiliary energy storage devices for instantaneous energy supply to hybrid cars and electric vehicles. Each of the supercapacitors is used as a supercapacitor module by connecting a plurality of the supercapacitors in series and in parallel. Each supercapacitor used as a supercapacitor module is called a cell, and the voltage deviation between the cells is reduced, A voltage stabilizing circuit is included.

Korean Patent No. 0578026 (Patent Document 1) relates to a voltage stabilizing circuit of a supercapacitor module, which includes a resistor Rn for reducing the inter-cell voltage deviation, a first resistor R1 for distributing the output voltage, R2, a zener diode, and a third resistor Rhn.

A resistor Rn for reducing an inter-cell voltage deviation is connected to each cell constituting the supercapacitor module in parallel to reduce a voltage deviation between the cells, and a first resistor R1 and a second resistor R2 for distributing an output voltage, Are connected in parallel with each cell to distribute the output voltage. The Zener diode is connected in parallel with the first resistor R1 and the second resistor R2 to determine the reference of the maximum allowable output voltage and the third resistor Rhn is connected in series to the cathode side of the Zener diode, And the voltage of the cell in which the overvoltage is generated is lowered so as to satisfy the stable dynamic characteristics between the cells as a whole.

The voltage stabilizing circuit of the conventional supercapacitor module such as Korean Patent No. 0578026 can manage the overvoltage due to each cell constituting the supercapacitor module being a supercapacitor, but in the case of the hybrid capacitor module composed of the hybrid capacitor The life of the hybrid capacitor can be reduced when the cell is discharged at a low voltage, and management of the low-voltage discharge state is required.

Patent Document 1: Korean Patent No. 0578026 (Registered on Feb. 5, 2006)

SUMMARY OF THE INVENTION An object of the present invention is to provide a CMS (Capacitor Management System) capable of being managed at the time of discharging at a low voltage as well as at a high voltage among cells included in the hybrid capacitor module.

It is another object of the present invention to provide a CMS capable of preventing the lifetime of a cell from being deteriorated by sensing and protecting discharge of a cell included in the hybrid capacitor module at a low voltage.

It is another object of the present invention to provide a CMS that can reduce the manufacturing cost of the CMS as a whole by simply configuring a circuit for sensing discharge at a low voltage among the cells included in the hybrid capacitor module.

The CMS of the present invention includes a hybrid capacitor module in which a plurality of hybrid capacitors are connected in series and in parallel with each other; And a plurality of cell balancing circuits connected in parallel with the hybrid capacitors to sense charging / discharging states of the hybrid capacitors, wherein the plurality of cell balancing circuits are respectively connected in parallel with the hybrid capacitors, An overvoltage discharge circuit for preventing the capacitor from being charged with an overvoltage, a high voltage sensing circuit connected in parallel with the hybrid capacitor and the overvoltage discharge circuit to sense that the hybrid capacitor is charged with a high voltage, and a high voltage sensing circuit connected between the hybrid capacitor and the high voltage sensing circuit And a low voltage sensing circuit connected in parallel to sense that the hybrid capacitor is discharged to a low voltage.

The CMS of the present invention has an advantage of being able to be managed not only by being charged at a high voltage among the cells included in the hybrid capacitor module but also at discharging at a low voltage and by detecting and discharging the cells discharged at a low voltage among the cells included in the hybrid capacitor module There is an advantage that the lifetime of the cell can be prevented from being lowered and a circuit for sensing discharge at a low voltage among the cells included in the hybrid capacitor module can be simply configured to reduce the manufacturing cost of the CMS as a whole.

1 is a circuit diagram showing a configuration of a CMS of the present invention,
FIG. 2 is a circuit diagram showing a detailed configuration of the parallel connection module shown in FIG. 1,
FIG. 3 is a circuit diagram showing the configuration of the cell balancing circuit shown in FIG. 2 in detail;
4 is a circuit diagram showing a detailed configuration of the overvoltage discharge circuit shown in FIG. 3,
5 is a circuit diagram showing a detailed configuration of the high voltage sensing circuit shown in FIG. 3,
FIG. 6 is a circuit diagram showing a detailed configuration of the low-voltage sensing circuit shown in FIG. 3,
FIG. 7 is a circuit diagram showing details of the configuration of the reset IC shown in FIGS. 4 to 6; FIG.

Hereinafter, embodiments of a capacitor management system (CMS) according to the present invention will be described with reference to the accompanying drawings.

1 to 3, the CMS (Capacitor Management System) of the present invention includes a hybrid capacitor module 20 and a plurality of cell balancing circuits 30. [

A plurality of hybrid capacitors 11a are connected in series and parallel in the hybrid capacitor module 20 and a plurality of cell balancing circuits 30 are connected in parallel with the hybrid capacitors 11a to supply the hybrid capacitors 11a Detect discharge status. The plurality of cell balancing circuits 30 are configured to include an overvoltage discharge circuit 31, a high voltage sensing circuit 32, and a low voltage sensing circuit 33, respectively. The overvoltage discharge circuit 31 is connected in parallel with the hybrid capacitor 11a to prevent the hybrid capacitor 11a from being charged with an overvoltage and the high voltage detection circuit 32 is connected between the hybrid capacitor 11a and the overvoltage discharge circuit 31, And detects that the hybrid capacitor 11a is charged to a high voltage. The low voltage sensing circuit 33 is connected in parallel with the hybrid capacitor 11a and the high voltage sensing circuit 32 to sense that the hybrid capacitor 11a is discharged to the low voltage.

The configuration of the CMS of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the plurality of parallel connection modules 10 are formed by connecting a plurality of serial connection modules 11 in parallel with each other.

The hybrid capacitor module 20 includes a plurality of parallel connection modules 10 and a plurality of serial connection modules 11 as shown in FIGS. The plurality of parallel connection modules 10 each include a plurality of serial connection modules 11 and the plurality of serial connection modules 11 are formed by connecting a plurality of hybrid capacitors 11a in series with each other.

The plurality of cell balancing circuits 30 are configured to include an overvoltage discharge circuit 31, a high voltage sense circuit 32 and a low voltage sense circuit 33, respectively, as in FIGS. 2 and 3.

The overvoltage discharge circuit 31 is connected in parallel to the hybrid capacitor 11a to prevent the hybrid capacitor 11a from being charged with an overvoltage. The overvoltage discharge circuit 31 includes a reset integrated circuit 31a, a MOSFET Oxide Semiconductor Field Effect Transistor (TR), a light emitting diode (LED), and one or more discharge resistors (DR1, DR2, DR3).

The reset IC 31a is connected in parallel with the hybrid capacitor 11a to sense the overcharged state of the hybrid capacitor 11a and output a detection signal Dsig. The MOSFET TR includes a reset IC 31a and a resistor R1 And is turned on when the detection signal Dsig is received. The light emitting diode LED is connected to the drain terminal of the MOSFET TR through a resistor R2 and is turned on by turning on the MOSFET TR to emit light to indicate that the hybrid capacitor 11a is overcharged. The one or more discharge resistors DR1, DR2 and DR3 are connected to the drain terminal of the MOSFET TR in parallel with the light emitting diodes LED, respectively. The overcharge of the hybrid capacitor 11a due to the turn- And discharges the voltage. 4, each of the one or more discharge resistors DR1, DR2 and DR3 is configured to discharge the overcharged hybrid capacitor 11a by turning on the MOSFET TR, Lt; / RTI >

The high voltage sensing circuit 32 is connected in parallel to the hybrid capacitor 11a and the overvoltage discharge circuit 31 so as to sense that the hybrid capacitor 11a is charged to a high voltage and the reset IC 32a, A MOSFET TR, a light emitting diode (LED), and a photocoupler 32b.

The reset IC 32a is connected in parallel with the hybrid capacitor 11a and connected in parallel with the overvoltage discharge circuit 31 to sense that the hybrid capacitor 11a is charged at a high voltage and output a detection signal Dsig. That is, the reset IC 32a senses that the hybrid capacitor 11a is charged to 2.9V or more, that is, the hybrid capacitor 11a is charged to a high voltage of 2.9V or more, and outputs the sensing signal Dsig. The MOSFET TR is connected to the reset IC 32a via the resistor R1 and is turned on when the sense signal Dsig is received. The light emitting diode LED is connected to the drain terminal of the MOSFET TR through a resistor R2 and is turned on by turning on the MOSFET TR to emit light to indicate that the hybrid capacitor 11a is charged to a high voltage. The photocoupler 32b is connected to the drain terminal of the MOSFET TR through a resistor R3 so as to be disposed in parallel with the light emitting diode LED. The photocoupler 32b is turned on by turning on the MOSFET TR, To the controller 60 (shown in Fig. 1). Here, the photocoupler 32b is a well-known technology including a light emitting diode and a phototransistor, and a detailed description thereof will be omitted.

The low voltage sensing circuit 33 is connected in parallel to the hybrid capacitor 11a and the high voltage sensing circuit 32 to sense that the hybrid capacitor 11a is discharged to the low voltage and the reset IC 33a, A MOSFET TR, a light emitting diode (LED), and a photocoupler 33b.

The reset IC 33a is connected in parallel with the hybrid capacitor 11a and connected in parallel with the high voltage sensing circuit 32 to sense the discharge of the hybrid capacitor 11a to the low voltage and output the sensing signal Dsig. The reset IC 33a senses that the hybrid capacitor 11a is discharged at a low voltage of 1.6V or less when the hybrid capacitor 11a is under 1.6V and outputs the sensing signal Dsig. The MOSFET TR is connected to the reset IC 33a via the resistor R1 and is turned on when the sense signal Dsig is received. The light emitting diode LED is connected to the drain terminal of the MOSFET TR via a resistor R2 and is turned on by turning on the MOSFET TR to emit light to indicate that the hybrid capacitor 11a is discharged to a low voltage and used. The photocoupler 33b is connected to the drain terminal of the MOSFET TR through a resistor R3 so as to be disposed in parallel with the light emitting diode LED. The photocoupler 33b is turned on by turning on the MOSFET TR, To the controller 60 (shown in Fig. 1). Here, the photocoupler 33b includes a light emitting diode and a phototransistor, and a detailed description thereof will be omitted.

The low-voltage sensing circuit 33 has the hybrid characteristic that the hybrid capacitor 11a has an intermediate electrical characteristic between the supercapacitor (not shown) and the lithium ion battery (not shown) in which the active material is used for the positive electrode and the negative electrode, The low voltage discharge state of the capacitor 11a must be managed and the manufacturing cost of the CMS of the present invention can be reduced by constituting the low voltage discharge state of the hybrid capacitor 11a with the simple low voltage sensing circuit 33. [

The reset ICs 31a, 32a, and 33a included in the overvoltage discharge circuit 31, the high voltage sense circuit 32, and the low voltage sense circuit 33 of the cell balancing circuit 30, respectively, A voltage generating source 30a, a comparator 30b, and a transistor TR.

The reference voltage generator 30a generates a reference voltage and generates either the overcharge voltage level, the high voltage charge voltage level or the low voltage discharge voltage level of the hybrid capacitor 11a and supplies it to the non-inverting terminal (-) of the comparator 30b . Here, the detailed configuration of the reference voltage generator 30a is the same as that of the comparator 30b, so a description thereof will be omitted.

The comparator 30b is connected to the reference voltage generator 30a and outputs a sense signal Dsig when the hybrid capacitor 11a is in an overcharged state, a high-voltage state, or a low-voltage state. That is, the comparator 30b sets the reference voltage of the reference voltage generating source 30a to either overcharge, high voltage charge or low voltage discharge, so that the hybrid capacitor 11a is overcharged, high voltage charged and low voltage And outputs a detection signal Dsig in the case of any one of discharging. More specifically, the comparator 30b includes an inverting terminal (+) connected to the reference voltage generator 30a and a non-inverting terminal (-) connected to the hybrid capacitor 11a. The charging voltage state of the hybrid capacitor 11a The charge voltage and the discharge voltage, and outputs the detection signal Dsig when the hybrid capacitor 11a is in one of overcharge, high voltage charging and low voltage discharge.

The transistor TR is connected to the comparator 30b and when the sensing signal Dsig is received from the comparator 30b, the transistor TR amplifies and outputs the sensing signal Dsig to the power supply level Vcc supplied through the pull-up resistor R2 . Here, the pull-up resistor R2 is connected to the drain terminal of the transistor TR, the resistor R1 is connected to the source terminal, and the comparator 30b is connected to the gate terminal.

The CMS of the present invention having the above-described configuration includes a plurality of first switches 40 connected to the hybrid capacitor module 20, a plurality of second switches 50 connected to the hybrid capacitor module 20, And a controller 60 connected to the switch 40 and the plurality of second switches 50, respectively.

The hybrid capacitor module 20 includes a plurality of parallel connection modules 10 as shown in FIGS. 1 and 2, a plurality of parallel connection modules 10 each include a plurality of serial connection modules 11, A plurality of hybrid capacitors 11a are connected in series to each other.

The plurality of first switches 40 are connected in series with the serial connection module 11 as shown in FIG. 2 and are opened when the first switch control signal SW1 is received to connect the serial connection module 11 to the hybrid capacitor module 20). That is, the plurality of first switches 40 are each connected to a serial connection module (not shown) configured to include a hybrid capacitor 11a that is opened when the first switch control signal SW1 is received from the controller 60 and is charged at a high voltage or discharged at a low voltage 11 is isolated from the electric connection at the hybrid capacitor module 20 to prevent the hybrid capacitor 11a from being charged at a high voltage or being discharged at low voltage to reduce the life of the product.

The plurality of second switches 50 are connected in series with the parallel connection module 10 as shown in FIGS. 1 and 2, respectively. When the second switch control signal SW2 is received, the parallel connection module 10 is connected to the hybrid And is separated from the capacitor module 20. That is, the plurality of second switches 50 are each connected to a parallel connection module (not shown), which is configured to include a hybrid capacitor 11a that is opened when the second switch control signal SW2 is received from the controller 60 and is discharged at a high voltage or a low voltage 10 is isolated from the electric connection at the hybrid capacitor module 20 to prevent the hybrid capacitor 11a from being charged at a high voltage or being discharged at low voltage to reduce the life of the product.

The plurality of first switches 40 and the plurality of second switches 50 are respectively a relay switch or an insulated gate bipolar transistor (IGBT), and the plurality of first switches 40 have the same rated current The rated current of each of the plurality of second switches 50 is the sum of the rated currents of the first switches SW1 connected to the plurality of serial connection modules 11 provided in the parallel connection module 10, (sum) is used. For example, the rated current of the second switch 50 may be set such that when three serial connection modules 11 are provided in one parallel connection module 10 and three first switches SW1 are provided, 1 switch SW1 is 30A which is the sum of the rated current of 10A (Ampere).

The controller 60 receives a sensing signal Dsig from one or more of the plurality of cell balancing circuits 30 connected to one serial connection module 11 and outputs a control signal to the first switch 40 When receiving the detection signal Dsig from one or more of the plurality of cell balancing circuits 30 connected to two or more serial connection modules 11 by applying the first switch control signal SW1 to the plurality of serial connection modules 11, The second switch control signal SW2 is applied to the second switch 50 connected to the one parallel connection module 10 in which the first switch control signal SW2 is disposed. That is, in the CMS of the present invention, the controller 60 generates the first switch control signal SW1 or the second switch control signal SW2 according to whether the detection signal Dsig is received, 2 switch 50 is opened to protect the hybrid capacitor 11a from a high voltage or a low voltage discharge state in units of a serial connection module 11 or a parallel connection module 10 constituting the hybrid capacitor module 20, The hybrid capacitor module 20 can be protected from high voltage charging and low voltage discharge.

As described above, the CMS of the present invention can be managed not only by being charged with a high voltage among the cells included in the hybrid capacitor module, but also by being discharged at a low voltage, and detecting that the cells included in the hybrid capacitor module are discharged at a low voltage It is possible to prevent the lifetime of the cell from being deteriorated and to simplify the construction of a circuit for sensing discharge at a low voltage among the cells included in the hybrid capacitor module, thereby reducing the manufacturing cost of the CMS as a whole.

The CMS of the present invention is applied to a manufacturing system of a management system of various capacitors such as hybrid capacitors and lithium ion secondary batteries.

10: Parallel connection module 11: Serial connection module
11a: Hybrid capacitor 20: Hybrid capacitor module
30: cell balancing circuit 31: overvoltage discharge circuit
32: high voltage detection circuit 33: low voltage detection circuit
40: first switch 50: second switch
60:

Claims (8)

A hybrid capacitor module in which a plurality of hybrid capacitors are connected in series and parallel to each other; And
And a plurality of cell balancing circuits connected in parallel with the hybrid capacitors to sense charging / discharging states of the hybrid capacitors,
Wherein the plurality of cell balancing circuits are respectively connected in parallel with the hybrid capacitors to prevent the hybrid capacitors from being charged with an overvoltage, the hybrid capacitors and the overvoltage discharge circuits are connected in parallel to each other so that the hybrid capacitors are charged And a low voltage sensing circuit connected in parallel to the hybrid capacitor and the high voltage sensing circuit to sense that the hybrid capacitor is discharged to a low voltage. The method according to claim 1,
The hybrid capacitor module includes a plurality of parallel connection modules, and each of the plurality of parallel connection modules includes a plurality of serial connection modules. The plurality of serial connection modules include a plurality of hybrid capacitors connected in series The CMS. The method according to claim 1,
The overvoltage discharge circuit includes: a reset IC connected in parallel with the hybrid capacitor to sense an overcharged state of the hybrid capacitor and output a detection signal;
A MOSFET (Metal Oxide Semiconductor Field Effect Transistor) connected to the reset IC through a resistor and turned on when a sense signal is received;
A light emitting diode connected to the drain terminal of the MOSFET through a resistor and turned on by the turn-on of the MOSFET to emit light for display; And
And at least one discharging resistor connected to the drain terminal of the MOSFET so as to be arranged in parallel with the light emitting diode and discharging the overcharge voltage of the hybrid capacitor by turning on the MOSFET. The method according to claim 1,
Wherein the high voltage sensing circuit is connected in parallel with the hybrid capacitor and connected in parallel with the overvoltage discharge circuit to sense that the hybrid capacitor is charged to a high voltage and output a sensing signal;
A MOSFET connected to the reset IC via a resistor and turned on when a sense signal is received;
A light emitting diode connected to the drain terminal of the MOSFET through a resistor and turned on by the turn-on of the MOSFET to emit light for display; And
And a photocoupler connected to the drain terminal of the MOSFET through a resistor so as to be disposed in parallel with the light emitting diode and turned on by turning on the MOSFET,
Wherein the reset IC senses the voltage of the hybrid capacitor when the hybrid capacitor has a voltage of 2.9 V or more and outputs a detection signal. The method according to claim 1,
Wherein the low voltage sensing circuit is connected in parallel with the hybrid capacitor and connected in parallel with the high voltage sensing circuit to sense a discharge of the hybrid capacitor to a low voltage and output a sensing signal;
A MOSFET connected to the reset IC via a resistor and turned on when a sense signal is received;
A light emitting diode connected to the drain terminal of the MOSFET through a resistor and turned on by the turn-on of the MOSFET to emit light for display; And
And a photocoupler connected to the drain terminal of the MOSFET through a resistor so as to be disposed in parallel with the light emitting diode and turned on by turning on the MOSFET,
Wherein the reset IC senses the hybrid capacitor when the hybrid capacitor is below a voltage of 1.6 V and outputs a detection signal. 6. The method according to any one of claims 3 to 5,
The reset IC includes: a reference voltage generator for generating a reference voltage;
A comparator connected to the reference voltage generator for outputting a detection signal when the hybrid capacitor is in an overcharged state, a high-voltage state, or a low-voltage state;
And a transistor connected to the comparator for amplifying a sensing signal to a power supply level supplied through a pull-up resistor when a sensing signal is received from the comparator,
The comparator includes an inverting terminal connected to a reference voltage source and a non-inverting terminal connected to the hybrid capacitor. The hybrid capacitor senses a charging voltage state, a charging voltage, and a discharging voltage of the hybrid capacitor to detect an overcharging, a high voltage charging, And outputs a detection signal when any one of them is detected,
Wherein the reference voltage generator generates one of an overcharging voltage level, a high voltage charging voltage level and a low voltage discharge voltage level of the hybrid capacitor to the non-inverting terminal of the comparator. The method according to claim 1,
The CMS further includes a plurality of first switches connected to the hybrid capacitor module, a plurality of second switches connected to the hybrid capacitor module, and a controller connected to the plurality of first switches and the plurality of second switches, respectively And,
Wherein the hybrid capacitor module includes a plurality of parallel connection modules, each of the plurality of parallel connection modules includes a plurality of serial connection modules, the plurality of serial connection modules include a plurality of hybrid capacitors connected in series,
The plurality of first switches are connected in series with the serial connection module and are opened when a first switch control signal is received to separate the serial connection module from the hybrid capacitor module,
The plurality of second switches are connected in series with the parallel connection module and are opened when the second switch control signal is received to separate the parallel connection module from the hybrid capacitor module,
When the controller receives a sensing signal from one or more of the plurality of cell balancing circuits connected to one serial connection module, the controller applies a first switch control signal to a first switch connected to one serial connection module, And a second switch control signal is applied to a second switch connected to one parallel connection module in which two or more serial connection modules are arranged, when a sensing signal is received at one or more of the plurality of cell balancing circuits connected thereto. 8. The method of claim 7,
Each of the plurality of first switches and the plurality of second switches may be a relay switch or an insulated gate bipolar transistor (IGBT)
Wherein the plurality of first switches each have the same rated current,
Wherein the rated current of each of the plurality of second switches is a sum of the rated currents of the first switches connected to the plurality of serial connection modules included in one parallel connection module.
KR1020160042828A 2016-04-07 2016-04-07 Capacitor management system KR101837548B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200002041A (en) * 2018-06-28 2020-01-08 주식회사 포스콤 Power supply apparatus for X-ray apparatus, and Portable X-ray apparatus having it

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JP5440918B2 (en) * 2009-09-02 2014-03-12 独立行政法人 宇宙航空研究開発機構 Power storage device with balance circuit
JP5143185B2 (en) * 2010-02-08 2013-02-13 三洋電機株式会社 Power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200002041A (en) * 2018-06-28 2020-01-08 주식회사 포스콤 Power supply apparatus for X-ray apparatus, and Portable X-ray apparatus having it

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