CN109004709A - A kind of high voltage charge circuit of variable connector switching control - Google Patents
A kind of high voltage charge circuit of variable connector switching control Download PDFInfo
- Publication number
- CN109004709A CN109004709A CN201810865872.2A CN201810865872A CN109004709A CN 109004709 A CN109004709 A CN 109004709A CN 201810865872 A CN201810865872 A CN 201810865872A CN 109004709 A CN109004709 A CN 109004709A
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- high voltage
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- circuit
- charge circuit
- voltage charge
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- 239000003990 capacitor Substances 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 208000003663 ventricular fibrillation Diseases 0.000 description 4
- 206010049418 Sudden Cardiac Death Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- H02J7/0021—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electrotherapy Devices (AREA)
Abstract
A kind of high voltage charge circuit of variable connector switching control, including microcontroller, inverse-excitation type high voltage charge circuit, switch switching circuit and energy capacitance set；The energy capacitance set is made of the multiple storage capacitors being cascaded, and switch switching circuit includes the multiple switch being set side by side, and each storage capacitor of energy capacitance set passes through the different switch connection inverse-excitation type high voltage charge circuits in switch switching circuit；The inverse-excitation type high voltage charge circuit is for charging to each storage capacitor；The microcontroller can to switch switching circuit output switch control signal, can to inverse-excitation type high voltage charge circuit export charging control signal, and by detection energy capacitance set in each capacitor feedback voltage to monitor entire charging process in real time.The present invention can either guarantee the equilibrium of the charging voltage on each storage capacitor, and can reduce the voltage drop that each device is subjected in circuit.
Description
Technical field
The invention belongs to medical instruments fields, and in particular to a kind of high voltage charge circuit of variable connector switching control.
Background technique
Sudden cardiac death seriously threatens the life security of the mankind, because of its high rate and high mortality, has become one
A global public health problem.Ventricular fibrillation be lead to the most important reason of sudden cardiac death, and ventricular fibrillation occur after in the short time
It is currently the only effective means for terminating ventricular fibrillation using electric defibrillation.Implanted defibrillator (ICD) is a kind of implantation inside of human body
Defibrillation instrument, can to cardiac rhythm carry out real-time monitoring, thus ventricular fibrillation occur at the beginning of just carry out urgent defibrillation, so being pre-
Anti- sudden cardiac death most efficient method.There are mainly two types of ICD clinical at present: the ICD (TV-ICD) that is implanted into through vein and
The ICD (S-ICD) being implanted subcutaneously.For both ICD, one of nucleus module of hardware circuit is all high-voltage charging electricity
Road.High voltage charge circuit is the low-voltage of supplying cell to be charged to high voltage, and store the energy in storage capacitor.
The maximum charging voltage different from of the ICD of different vendor's different model, in general, TV-ICD is about 800V,
S-ICD is about 1300V.High voltage charge circuit in implanted defibrillator need to meet claimed below: it is small in size, to minimize
The size of ICD；Structure is simple, and to guarantee to work long hours and stablize, is reliable, safety；Charging time is short, and defibrillation is as early as possible to improve
Defibrillation success rate；Charge efficiency is high, to extend battery life.High voltage charge circuit in implanted defibrillator generallys use flyback
Formula Switching Power Supply is realized.The Basic Topological of inverse-excitation type switch power-supply includes power supply, transformer, switching tube, diode and storage
Energy capacitor etc., the course of work can be found in Fudan University patent ZL 201310072804.8.
The storage capacitor in implanted defibrillator is usually realized using wet tantalum capacitor at present, and single at present high performance
The maximum pressure resistance of capacitor only has 250V (referring to Niu Peisi house journal, application number CN 201510486676.0), therefore either
TV-ICD or S-ICD must can just obtain required high pressure using the series connection of multiple capacitors.Due to the capacitance and leakage of each capacitor
The parameters such as electric current can not be completely the same, so will necessarily have voltage unbalanced problem when multiple capacitor serial connection charges, has
May make the voltage on certain capacitors is more than its maximum pressure resistance, and there are some potential safety problemss.Existing ICD is usually using ginseng
Number as close possible to capacitor connect, and be aided with it is necessary press measure, but this can not eliminate the unbalanced problem of voltage.Separately
Outside during the charging process, transformer and switching tube will bear high pressure, this requirement to device performance is very high.
Summary of the invention
It is an object of the invention to be directed to above-mentioned the problems of the prior art, a kind of height of variable connector switching control is provided
Charging circuit is pressed, avoids voltage when multiple energy storage capacitor in series charge in defibrillator high voltage charging circuit unbalanced, and can
The voltage drop that transformer and switching tube are subjected in charging process is effectively reduced, improves the performance and used life of defibrillator.
To achieve the goals above, the technical solution adopted by the present invention are as follows: including microcontroller, inverse-excitation type high-voltage charging electricity
Road, switch switching circuit and energy capacitance set；The energy capacitance set is made of the multiple storage capacitors being cascaded, and is opened
Closing switching circuit includes the multiple switch being set side by side, and each storage capacitor of energy capacitance set passes through in switch switching circuit
Different switch connection inverse-excitation type high voltage charge circuits；The inverse-excitation type high voltage charge circuit be used for each storage capacitor into
Row charging；The microcontroller can be to switch switching circuit output switch control signal, and switch control signal is for controlling
It is all in switch switching circuit to switch on-off；The microcontroller can export charging control to inverse-excitation type high voltage charge circuit
Signal processed, charging control signal control inverse-excitation type high voltage charge circuit start or stop charging；The microcontroller passes through inspection
The feedback voltage of each capacitor in energy capacitance set is surveyed to monitor entire charging process in real time；The switch switching circuit is according to opening
The branch that control signal behavior will be connected is closed, and the storage capacitor of this branch is accessed into inverse-excitation type high voltage charge circuit.
The microcontroller is electric to switching by I/O mouthfuls of output switch control signals and charging control signal respectively
Road and inverse-excitation type high voltage charge circuit detect the feedback voltage of each capacitor in energy capacitance set by A/D conversion port.
The inverse-excitation type high voltage charge circuit includes DC power supply DC, transformer T1, switching tube Q1 and diode D1,
The anode of the termination DC power supply DC of the same name of transformer T1 primary, the drain electrode of another termination switching tube Q1；The source electrode of switching tube Q1
It connects the cathode of DC power supply DC and is grounded GND；The grid of switching tube Q1 meets high-frequency pulse signal Ctrl；The secondary warp of transformer T1
Diode D1 connection switch switching circuit is crossed, diode D1 is connected on the different name end of T1 grade of transformer.
The output voltage of the DC power supply DC is 2.0V-15.0V.
The switch switching circuit is made of n high voltage end switch SH1-SHn and n low-voltage end switch SL1-SLn,
One end of n high voltage end switch SH1-SHn is connected together and connect with the diode D1 cathode of inverse-excitation type high voltage charge circuit,
The other end of n high voltage end switch SH1-SHn is connect with the anode of n storage capacitor in energy capacitance set respectively；N low electricity
One end of side switch SL1-SLn is connected together and connects with the Same Name of Ends of T1 grade of transformer in inverse-excitation type high voltage charge circuit
It connects, the other end of n low-voltage end switch SL1-SLn is separately connected the cathode of n storage capacitor in energy capacitance set.
N high voltage end switch SH1-SHn of the switch switching circuit and n low-voltage end switch SL1-SLn are used
Switching tube, relay or photoelectrical coupler.N storage capacitor of energy capacitance set is sequentially connected in series from high to low, first order storage
The anode of energy capacitor connects ceiling voltage end (target voltage values V1), and the cathode of afterbody storage capacitor connects minimum voltage end
(GND)。
Compared with prior art, the present invention is with following the utility model has the advantages that each storage capacitor by energy capacitance set is equal
It is connected to inverse-excitation type high voltage charge circuit by the different switches in switch switching circuit, it is electric to switching by microcontroller
Road output switch control signal and to inverse-excitation type high voltage charge circuit export charging control signal, realize be serially connected it is multiple
Storage capacitor timesharing charge independence, microcontroller are whole to monitor in real time by the feedback voltage of each capacitor in detection energy capacitance set
A charging process.Charging circuit of the invention can either guarantee the equilibrium of the charging voltage on each storage capacitor, and can reduce height
The voltage drop that is subjected to of each device in pressure charging circuit, suitable for defibrillator and other need to carry out the field of high-voltage charging
It closes.
Detailed description of the invention
Overall circuit configuration block diagram Fig. 1 of the invention；
The high voltage charge circuit schematic diagram of Fig. 2 variable connector switching control；
In attached drawing: 1- microcontroller；2- inverse-excitation type high voltage charge circuit；3- switch switching circuit；4- energy capacitance set.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings.
The high voltage charge circuit of variable connector switching control of the present invention can be used for implanted defibrillator, realize to storage capacitor
Group efficiently, quickly, balancedly charge.In embodiment, the supply voltage Vdc=5V of DC power supply DC is set, transformer T1's
Turn ratio 1:N=1:10, energy capacitance set high voltage charge circuit target charging voltage are V1=800V, and energy capacitance set is by n=4
The identical capacitor of a nominal capacitance connects to obtain, then the pressure drop after charging complete on each capacitor is V1/n=200V.
The high voltage charge circuit of variable connector switching control of the present invention by microcontroller 1, inverse-excitation type high voltage charge circuit 2,
Switch switching circuit 3 and energy capacitance set 4 form.1 output switch control signal of microcontroller is in control switch switching circuit 3
It is all to switch on-off, export charging control signal to control 2 beginnings of inverse-excitation type high voltage charge circuit/stopping charging.
Microcontroller 1 by detection energy capacitance set 4 in each capacitor feedback voltage to monitor entire charging process in real time,
To guarantee electric voltage equalization on each capacitor.Switch switching circuit 3 is according to control signal behavior conduction path, and by the electricity of this access
Hold access inverse-excitation type high voltage charge circuit 2.Inverse-excitation type high voltage charge circuit 2 is quick, high using the principle of inverse-excitation type switch power-supply
It charges to storage capacitor on effect ground.Energy capacitance set 4 is for high-pressure energy needed for storing defibrillation.
Inverse-excitation type high voltage charge circuit 2 of the invention is by DC power supply DC, transformer T1, switching tube Q1, diode D1 group
At；Switch switching circuit 3 is made of the total 2n switch of SH1-SHn, SL1-SLn；Energy capacitance set 4 is by the total n capacitance group of C1-Cn
At.One end (Same Name of Ends) of transformer T1 primary connects the anode of DC power supply DC, the drain electrode of another termination switching tube Q1；Switching tube
The source electrode of Q1 connects the cathode of DC power supply DC and is grounded GND；The grid of switching tube Q1 meets control signal Ctrl.T1 grade of transformer
Same Name of Ends connect 1 end of switch SL1-SLn, the anode of another terminating diode D1 simultaneously；The cathode of D1 meets switch SH1- simultaneously
1 end of SHn；2 ends of SH1-SHn connect the anode of C1-Cn respectively；2 ends of SL1-SLn connect the cathode of C1-Cn respectively；C1-Cn from
It is high to Low to be connected in series, i.e. the cathode of the Ci anode (i=1,2 ..., n-1) that meets Ci+1, the just extremely ceiling voltage end of C1, Cn
Cathode be minimum voltage end and to be grounded GND.Ctrl signal is high-frequency pulse signal, in this embodiment using fixed frequency
The pwm signal that rate Controlled in Current Mode and Based chip generates；Switching tube can be used in SH1-SHn, SL1-SLn or relay is realized, at this
MOSFET output photoelectric coupler is used in specific embodiment, on-off is controlled by microcontroller.N=4 in this specific embodiment,
The course of work of hardware circuit are as follows: (1) first turn on SH1 and SL1, other switches are in an off state；Pass through Ctrl signal control
The turn-on and turn-off of switching tube Q1 processed；When switching tube Q1 conducting, low-voltage dc power supply DC charges to transformer T1, transformer T1
Primary there is electric current to flow through, secondary has an induced electromotive force at this time, but due to the reversed cut-off of diode D1, secondary is without electricity
Stream, energy stores are among transformer T1；When switching tube Q1 shutdown, it is 0 that primary current, which die-offs, but not due to transformer flux
It can be mutated, secondary can generate inverse electromotive force, instantaneously generate high voltage, then diode D1 forward conduction, realize to capacitor C1
Charging；Lasting charging can be realized in turn-on and turn-off to switching tube Q1 repeatedly, and voltage reaches 200V on final capacitor C1, stops filling
Electricity.(2) SHi and SLi (i=2,3,4) are sequentially turned on after, and guarantees that other switches are in an off state, repeats filling in (1)
Electric process stops charging when voltage reaches 200V on capacitor Ci.It is total in final energy capacitance set because each capacitor is to be connected in series
Charging voltage be 4 × 200V=800V.
Compared to the scheme of capacitors all in energy capacitance set while serial connection charge, using charging scheme shown in Fig. 2
Advantage is: (1) since the charging process of each capacitor is mutually indepedent, and voltage is by real-time monitoring on each capacitor, so respectively
The unbalanced problem of voltage can avoid as far as possible on capacitor.(2) during the charging process, both ends maximum pressure drop is when T1 grade conducting
The both ends V1/n=200V, Q1 maximum pressure drop is Vdc+V1/ (N × n)=25V；And for the side of all capacitors while serial connection charge
Case, both ends maximum pressure drop is V1=800V when the conducting of T1 grade, and the both ends Q1 maximum pressure drop is Vdc+V1/N=85V；Compare it is found that
Scheme shown in Fig. 2 effectively reduces the voltage drop that transformer T1 and switching tube Q1 are subjected to.
The foregoing is merely a prefered embodiment of the invention, but scope of protection of the present invention is not limited thereto, any to be familiar with sheet
In the technical scope disclosed by the present invention, the variation or replacement that can be readily occurred in should all be covered those skilled in the art
Within the scope of the present invention.Therefore, protection scope of the present invention should require defined protection model with claims
Subject to enclosing.
Claims (7)
1. a kind of high voltage charge circuit of variable connector switching control, it is characterised in that: high including microcontroller (1), inverse-excitation type
Press charging circuit (2), switch switching circuit (3) and energy capacitance set (4)；The energy capacitance set (4) is by being cascaded
Multiple storage capacitors composition, switch switching circuit (3) includes each of the multiple switch being set side by side, energy capacitance set (4)
Storage capacitor passes through different switch connections inverse-excitation type high voltage charge circuit (2) in switch switching circuit (3)；The flyback
Formula high voltage charge circuit (2) is for charging to each storage capacitor；The microcontroller (1) can be to switching electricity
Road (3) output switch control signal, switch control signal are switched on-off for all in control switch switching circuit (3)；Institute
The microcontroller (1) stated can export charging control signal to inverse-excitation type high voltage charge circuit (2), and charging control signal control is anti-
Swash formula high voltage charge circuit (2) and starts or stops charging；The microcontroller (1) passes through each in detection energy capacitance set (4)
The feedback voltage of capacitor is to monitor entire charging process in real time；The switch switching circuit (3) is selected according to switch control signal
The branch to be connected is selected, and the storage capacitor of this branch is accessed into inverse-excitation type high voltage charge circuit (2).
2. the high voltage charge circuit of variable connector switching control according to claim 1, it is characterised in that: the microcontroller
Device (1) passes through I/O mouthfuls of output switch control signals and charging control signal to switch switching circuit (3) and inverse-excitation type high pressure respectively
Charging circuit (2) passes through the feedback voltage of each capacitor in A/D conversion port detection energy capacitance set (4).
3. the high voltage charge circuit of variable connector switching control according to claim 1, it is characterised in that: the inverse-excitation type
High voltage charge circuit (2) includes DC power supply DC, transformer T1, switching tube Q1 and diode D1, primary same of transformer T1
The anode of name termination DC power supply DC, the drain electrode of another termination switching tube Q1；The source electrode of switching tube Q1 connects the negative of DC power supply DC
Pole is simultaneously grounded GND；The grid of switching tube Q1 meets high-frequency pulse signal Ctrl；The secondary of transformer T1 is opened by diode D1 connection
It closes switching circuit (3), diode D1 is connected on the different name end of T1 grade of transformer.
4. the high voltage charge circuit of variable connector switching control according to claim 3, it is characterised in that: the DC power supply
The output voltage of DC is 2.0V-15.0V.
5. the high voltage charge circuit of variable connector switching control according to claim 3, it is characterised in that: the switching
Circuit (3) is made of n high voltage end switch SH1-SHn and n low-voltage end switch SL1-SLn, n high voltage end switch
One end of SH1-SHn is connected together and connect with the diode D1 cathode of inverse-excitation type high voltage charge circuit (2), n high voltage end
The other end of switch SH1-SHn is connect with the anode of n storage capacitor in energy capacitance set (4) respectively；N low-voltage end switch
One end of SL1-SLn is connected together and connect with the Same Name of Ends of T1 grade of transformer in inverse-excitation type high voltage charge circuit (2), and n
The other end of low-voltage end switch SL1-SLn is separately connected the cathode of n storage capacitor in energy capacitance set (4).
6. the high voltage charge circuit of variable connector switching control according to claim 5, it is characterised in that: described n is high
Voltage end switch SH1-SHn and n low-voltage end switch SL1-SLn use switching tube, relay or photoelectrical coupler.
7. according to claim 1 or the high voltage charge circuit of the 5 variable connector switching controls, it is characterised in that: storage capacitor
N storage capacitor of group (4) is sequentially connected in series from high to low, and ceiling voltage terminates target voltage values V1, minimum voltage end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810865872.2A CN109004709A (en) | 2018-08-01 | 2018-08-01 | A kind of high voltage charge circuit of variable connector switching control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810865872.2A CN109004709A (en) | 2018-08-01 | 2018-08-01 | A kind of high voltage charge circuit of variable connector switching control |
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| Publication Number | Publication Date |
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| CN109004709A true CN109004709A (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810865872.2A Pending CN109004709A (en) | 2018-08-01 | 2018-08-01 | A kind of high voltage charge circuit of variable connector switching control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463889A (en) * | 2020-04-09 | 2020-07-28 | 云南电网有限责任公司电力科学研究院 | Double-direct-current power supply switching system with self-locking function |
| CN112015110A (en) * | 2019-05-28 | 2020-12-01 | 杭州瑞彼加医疗科技有限公司 | Control device of switch array |
| CN116207982A (en) * | 2023-04-25 | 2023-06-02 | 北京理工大学 | Capacitor charging and releasing device with redundant design |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222957A (en) * | 2011-06-21 | 2011-10-19 | 清华大学深圳研究生院 | Automatic battery capacity equalization circuit and implementing method thereof |
| CN202524295U (en) * | 2011-12-30 | 2012-11-07 | 深圳麦格米特电气股份有限公司 | Multi-level balancing circuit |
| CN105789715A (en) * | 2016-02-25 | 2016-07-20 | 上海大学 | Battery sampling and equalization circuits sharing switch array |
| CN107658935A (en) * | 2017-10-20 | 2018-02-02 | 广州金升阳科技有限公司 | A kind of battery detection and equalizing system and its control method |
| CN107658936A (en) * | 2017-10-20 | 2018-02-02 | 广州金升阳科技有限公司 | A kind of battery detection and equalizing system and its control method |
-
2018
- 2018-08-01 CN CN201810865872.2A patent/CN109004709A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222957A (en) * | 2011-06-21 | 2011-10-19 | 清华大学深圳研究生院 | Automatic battery capacity equalization circuit and implementing method thereof |
| CN202524295U (en) * | 2011-12-30 | 2012-11-07 | 深圳麦格米特电气股份有限公司 | Multi-level balancing circuit |
| CN105789715A (en) * | 2016-02-25 | 2016-07-20 | 上海大学 | Battery sampling and equalization circuits sharing switch array |
| CN107658935A (en) * | 2017-10-20 | 2018-02-02 | 广州金升阳科技有限公司 | A kind of battery detection and equalizing system and its control method |
| CN107658936A (en) * | 2017-10-20 | 2018-02-02 | 广州金升阳科技有限公司 | A kind of battery detection and equalizing system and its control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112015110A (en) * | 2019-05-28 | 2020-12-01 | 杭州瑞彼加医疗科技有限公司 | Control device of switch array |
| CN112015110B (en) * | 2019-05-28 | 2024-03-29 | 杭州瑞彼加医疗科技有限公司 | Control device of switch array |
| CN111463889A (en) * | 2020-04-09 | 2020-07-28 | 云南电网有限责任公司电力科学研究院 | Double-direct-current power supply switching system with self-locking function |
| CN116207982A (en) * | 2023-04-25 | 2023-06-02 | 北京理工大学 | Capacitor charging and releasing device with redundant design |
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Application publication date: 20181214 |