CN107947312A - A kind of constant-current source circuit for DC load - Google Patents
A kind of constant-current source circuit for DC load Download PDFInfo
- Publication number
- CN107947312A CN107947312A CN201711238921.1A CN201711238921A CN107947312A CN 107947312 A CN107947312 A CN 107947312A CN 201711238921 A CN201711238921 A CN 201711238921A CN 107947312 A CN107947312 A CN 107947312A
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- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 230000001052 transient effect Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 238000007600 charging Methods 0.000 abstract description 20
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002360 preparation method Methods 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- H02J7/045—
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- H02J2007/10—
Abstract
The present invention discloses a kind of constant-current source circuit for DC load, including power module, control circuit, the first drive module, the second drive module, the 3rd drive module and voltage detection module, the power module connects control circuit and voltage detection module respectively, and control circuit is also respectively connected with the first drive module, the second drive module and the 3rd drive module, voltage detection module and is also respectively connected with the first drive module, the second drive module, the 3rd drive module, control circuit and load.The present invention is used for constant-current charge of the constant-current source circuit suitable for direct-flow storage battery of DC load, charging uses the control mode of voltage constant, to 3 stage section constant-current charges of storage battery point, and continue vortex charging to storage battery with low current after fully charged, the low current to battery will not output injure, while the electricity of battery can be kept again.Charge efficiency can not only be improved using this circuit, saves electric energy, and is conducive to extend the service life of storage battery.
Description
Technical field
The present invention relates to a kind of constant-current source circuit, is specifically a kind of constant-current source circuit for DC load.
Background technology
Charger has the service life of rechargeable battery a large effect, many chargers when in use it is often found that
Battery is filled seriously to generate heat, and overcharges phenomenon, influences the service life of battery, and reason is that the charging circuit of charger is most
Charged using the mode of timing constant current, be to determine its timing according to the size of battery capacity and charging current, but
Capacity of the battery after user's use not can determine that, therefore, be easy to cause and overcharges.Therefore it is to be improved.
Such as a kind of charging circuit that Patent No. 201520181821.X is announced, can be in battery electricity it discloses one kind
Pressure reaches the automatic charger for disconnecting charge circuit after certain critical value, and this charger can play certain protection and make
With, but in its whole charging process voltage be it is constant, this may cause to have on the internal resistance of cell larger pressure drop and
Fever, and then battery is caused to damage.
A kind of also energy saving constant-current charging circuit of Patent No. 201620069487.3, it discloses one kind to keep
The constant charger of electric current in charging process, it is improved in stability relative to traditional common charger, but its
The function full of protection is not had.
The content of the invention
It is an object of the invention to provide a kind of constant-current source circuit saved electric energy, charging effect and be used on DC load,
To solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical solution：
A kind of constant-current source circuit for DC load, including power module, control circuit, the first drive module, the second driving
Module, the 3rd drive module and voltage detection module, the power module connect control circuit and voltage detection module respectively, control
Circuit processed is also respectively connected with the first drive module, the second drive module and the 3rd drive module, voltage detection module and also connects respectively
Connect the first drive module, the second drive module, the 3rd drive module, control circuit and load.
Preferred solution as the present invention：The power module includes resistance-capacitance depressurization module, rectification module and Voltage stabilizing module,
Resistance-capacitance depressurization module includes the resistance R3 and capacitance C1 being connected in parallel, and rectification module includes transient voltage suppressor diode and rectification
The voltage input end of bridge T, rectifier bridge T after resistance-capacitance depressurization module with 220V alternating currents by being connected, the voltage input end of rectifier bridge T
Transient voltage suppressor diode is also connected in parallel to, the voltage output end of rectifier bridge T is connected with Voltage stabilizing module, Voltage stabilizing module bag
Filter capacitor C2, zener diode D2 and three-terminal voltage-stabilizing chip IC 2 are included, input terminal and the capacitance C2 of three-terminal voltage-stabilizing chip IC 1 connect
Connect, the output terminal connection diode D2 and output voltage U1 of three-terminal voltage-stabilizing chip IC 1.
Preferred solution as the present invention：The control circuit includes chip IC 1, capacitance C1 and resistance R18, and described first
Drive module includes triode VT3, unidirectional thyristor Q1 and resistance R3, and the second drive module includes triode VT4, unidirectional brilliant lock
Pipe Q2 and resistance R4, the 3rd drive module include triode VT5, unidirectional thyristor Q3 and resistance R5, and voltage detection module includes
Diode D1, triode VT1 and triode VT2；One end connection resistance R1, resistance R4, resistance R6, the resistance of the resistance R3
R7, the anode of diode D4, the collector of triode VT3, the collector of triode VT4, the collector of triode VT5, chip
Other end connection resistance R18, the current collection of triode VT1 of 4 pins of IC1,8 pins of chip IC 1 and power supply VCC, resistance R1
Pole, the collector of triode VT2,6 pins of 2 pins of chip IC 1 and chip IC 1, the base stage connection resistance of triode VT1
R17, the other end of resistance R18, capacitance C1, capacitance C2, capacitance C3, capacitance C4, the anode of storage battery E1, one-way SCR Q1 ~
The cathode of Q3, the base stage of triode VT1,1 pin of the emitter of triode VT2 and chip IC 1, the base stage of triode VT2 connect
The other end of connecting resistance R17 and the anode of diode D1, the cathode of the cathode connection diode D7 of diode D1, the 5 of chip IC 1
The other end of pin connection capacitance C1, the other end connection electricity of the connection of 3 pins the resistance R2 and resistance R9, resistance R2 of chip IC 1
Hinder the other end of R8, resistance R12 and capacitance C2, the other end of the other end connection resistance R19 and capacitance C3 of resistance R8, resistance
The other end of the other end connection capacitance C4 of R19, the control pole of the other end connection one-way SCR Q1 of resistance R9 are unidirectional controllable
The other end of anode connection resistance R3 and the base stage of triode VT3 of silicon Q1, the emitter connection resistance R10 of triode VT1 and
The anode of the other end connection diode D1 of resistance R11, resistance R11, the cathode of the other end connection diode D2 of resistance R12,
The control pole of the anode connection one-way SCR Q2 of diode D2, the other end of the anode connection resistance R4 of one-way SCR Q2 and
The base stage of triode VT4, the other end of emitter connection the resistance R13 and resistance R14, resistance R14 of triode VT4 connect two poles
The anode of pipe D3, it is the other end of the other end connection resistance R6 of cathode connection the resistance R5, resistance R5 of diode D4, unidirectional controllable
The anode of silicon Q3 and the base stage of triode VT5, the other end, resistance R15 and the resistance of the emitter connection resistance R7 of triode VT5
The anode of the other end connection diode D5 of R16, resistance R16, the other end, the resistance of the other end connection resistance R3 of resistance R10
The other end of R15, the cathode of diode D1, the cathode of diode D3, the cathode of diode D5, the cathode of diode D6, two poles
The anode of pipe D7 and the anode of storage battery E1, the other end connection of anode connection the resistance R20, resistance R20 of diode D6 are unidirectional
The control pole of silicon-controlled Q3.
Preferred solution as the present invention：The chip IC 1 is NE555 timers.
Preferred solution as the present invention：Described diode D1, D3, D5 are light emitting diode.
Preferred solution as the present invention：The power supply VCC is 5V direct currents.
Preferred solution as the present invention：The model LM7805 of the chip IC 2.
Preferred solution as the present invention：The diode D2 is zener diode.
Preferred solution as the present invention：The load is storage battery.
Compared with prior art, the beneficial effects of the invention are as follows：The constant-current source circuit that the present invention is used for DC load is applicable in
In the constant-current charge of direct-flow storage battery, charging uses the control mode of voltage constant, divides 3 stage constant-current charges to storage battery,
And continue vortex charging after fully charged to storage battery with low current, the low current to battery will not output injure,
It can keep the electricity of battery again at the same time.Charge efficiency can not only be improved using this circuit, saves electric energy, and be conducive to extend
The service life of storage battery.
Brief description of the drawings
Fig. 1 is the overall block diagram of the present invention；
Fig. 2 is the circuit diagram of power module；
Fig. 3 is the circuit diagram of an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Please refer to Fig.1-3, a kind of constant-current source circuit for DC load, including power module, control circuit, first drive
Dynamic model block, the second drive module, the 3rd drive module and voltage detection module, the power module connect respectively control circuit and
Voltage detection module, control circuit are also respectively connected with the first drive module, the second drive module and the 3rd drive module, voltage inspection
Survey module and be also respectively connected with the first drive module, the second drive module, the 3rd drive module, control circuit and load.
Preferred solution as the present invention：The power module includes resistance-capacitance depressurization module, rectification module and Voltage stabilizing module,
Resistance-capacitance depressurization module includes the resistance R3 and capacitance C1 being connected in parallel, and rectification module includes transient voltage suppressor diode and rectification
The voltage input end of bridge T, rectifier bridge T after resistance-capacitance depressurization module with 220V alternating currents by being connected, the voltage input end of rectifier bridge T
Transient voltage suppressor diode is also connected in parallel to, the voltage output end of rectifier bridge T is connected with Voltage stabilizing module, Voltage stabilizing module bag
Filter capacitor C2, zener diode D2 and three-terminal voltage-stabilizing chip IC 2 are included, input terminal and the capacitance C2 of three-terminal voltage-stabilizing chip IC 1 connect
Connect, the output terminal connection diode D2 and output voltage U1 of three-terminal voltage-stabilizing chip IC 1.
Preferred solution as the present invention：The control circuit includes chip IC 1, capacitance C1 and resistance R18, and described first
Drive module includes triode VT3, unidirectional thyristor Q1 and resistance R3, and the second drive module includes triode VT4, unidirectional brilliant lock
Pipe Q2 and resistance R4, the 3rd drive module include triode VT5, unidirectional thyristor Q3 and resistance R5, and voltage detection module includes
Diode D1, triode VT1 and triode VT2；One end connection resistance R1, resistance R4, resistance R6, the resistance of the resistance R3
R7, the anode of diode D4, the collector of triode VT3, the collector of triode VT4, the collector of triode VT5, chip
Other end connection resistance R18, the current collection of triode VT1 of 4 pins of IC1,8 pins of chip IC 1 and power supply VCC, resistance R1
Pole, the collector of triode VT2,6 pins of 2 pins of chip IC 1 and chip IC 1, the base stage connection resistance of triode VT1
R17, the other end of resistance R18, capacitance C1, capacitance C2, capacitance C3, capacitance C4, the anode of storage battery E1, one-way SCR Q1 ~
The cathode of Q3, the base stage of triode VT1,1 pin of the emitter of triode VT2 and chip IC 1, the base stage of triode VT2 connect
The other end of connecting resistance R17 and the anode of diode D1, the cathode of the cathode connection diode D7 of diode D1, the 5 of chip IC 1
The other end of pin connection capacitance C1, the other end connection electricity of the connection of 3 pins the resistance R2 and resistance R9, resistance R2 of chip IC 1
Hinder the other end of R8, resistance R12 and capacitance C2, the other end of the other end connection resistance R19 and capacitance C3 of resistance R8, resistance
The other end of the other end connection capacitance C4 of R19, the control pole of the other end connection one-way SCR Q1 of resistance R9 are unidirectional controllable
The other end of anode connection resistance R3 and the base stage of triode VT3 of silicon Q1, the emitter connection resistance R10 of triode VT1 and
The anode of the other end connection diode D1 of resistance R11, resistance R11, the cathode of the other end connection diode D2 of resistance R12,
The control pole of the anode connection one-way SCR Q2 of diode D2, the other end of the anode connection resistance R4 of one-way SCR Q2 and
The base stage of triode VT4, the other end of emitter connection the resistance R13 and resistance R14, resistance R14 of triode VT4 connect two poles
The anode of pipe D3, it is the other end of the other end connection resistance R6 of cathode connection the resistance R5, resistance R5 of diode D4, unidirectional controllable
The anode of silicon Q3 and the base stage of triode VT5, the other end, resistance R15 and the resistance of the emitter connection resistance R7 of triode VT5
The anode of the other end connection diode D5 of R16, resistance R16, the other end, the resistance of the other end connection resistance R3 of resistance R10
The other end of R15, the cathode of diode D1, the cathode of diode D3, the cathode of diode D5, the cathode of diode D6, two poles
The anode of pipe D7 and the anode of storage battery E1, the other end connection of anode connection the resistance R20, resistance R20 of diode D6 are unidirectional
The control pole of silicon-controlled Q3.
Chip IC 1 is NE555 timers.Diode D1, D3, D5 are light emitting diode.Power supply VCC is 5V direct currents.
The model LM7805 of chip IC 2.Diode D2 is zener diode.Load as storage battery.
The present invention operation principle be：Fig. 1 is the integral module block diagram of the present invention, and Fig. 2 is the specific electricity of power module
Lu Tu, 220V alternating current enter rectification module after the decompression of resistance-capacitance depressurization module and carry out AC-DC conversions, and direct current is obtained after conversion
Pressure, Fig. 2 are the circuit diagram of remainder, and at the beginning the constant current fast charge stage, when starting because of charging, the voltage of storage battery is set less than it
Fixed load voltage value when being full of, the 3 pins output low level of chip IC 1, diode VT3 ~ VT5 conductings.Charging current is permanent
420mA or so is scheduled on, when the voltage at battery both ends is stepped up to ceiling voltage (3V or so) of charging setting, triode
The collector of VT1 and VT2 becomes low level, and chip IC 1 is overturn first, its 3 pin output high level, triggering one-way SCR Q1
Conducting, triode VT3 shut-offs.It is transferred to the second stage of charging, charging current is constant in 200mA or so, due to charging current
Reducing suddenly, the voltage at rechargeable battery both ends will drop down, and make the reset again of chip IC 1, its 3 pin output low level,
Remaining two charge circuit still turns on, and charger will be charged with the current versus cell of 200mA.Cell voltage again will be by
Step is increased to the ceiling voltage of charging setting.Then circuit is overturn again, triggers one-way SCR Q2, turns off triode VT4.Weight
Multiple above-mentioned process, VT5 will trigger shut-off with this.Charge after three phases, charging circuit continues battery with low current
Vortex charging is carried out, circuit uses the control mode of voltage constant, to 3 stage section constant-current charges of storage battery point, and is filling
Continue vortex charging after full electricity to storage battery with low current, the low current to battery will not output injure, while again may be used
Keep the electricity of battery.Charge efficiency can not only be improved using this circuit, saves electric energy, and is conducive to extend storage battery
Service life.
Claims (9)
1. a kind of constant-current source circuit for DC load, including power module, control circuit, the first drive module, the second drive
Dynamic model block, the 3rd drive module and voltage detection module, it is characterised in that the power module connects control circuit and electricity respectively
Detection module is pressed, control circuit is also respectively connected with the first drive module, the second drive module and the 3rd drive module, voltage detecting
Module is also respectively connected with the first drive module, the second drive module, the 3rd drive module, control circuit and load.
A kind of 2. constant-current source circuit for DC load according to claim 1, it is characterised in that the power module
Including resistance-capacitance depressurization module, rectification module and Voltage stabilizing module, resistance-capacitance depressurization module includes the resistance R3 and capacitance C1 being connected in parallel,
Rectification module includes transient voltage suppressor diode and rectifier bridge T, after the voltage input end of rectifier bridge T is by resistance-capacitance depressurization module
It is connected with 220V alternating currents, the voltage input end of rectifier bridge T is also connected in parallel to transient voltage suppressor diode, rectifier bridge T's
Voltage output end is connected with Voltage stabilizing module, and Voltage stabilizing module includes filter capacitor C2, zener diode D2 and three-terminal voltage-stabilizing chip
IC2, the input terminal of three-terminal voltage-stabilizing chip IC 1 are connected with capacitance C2, the output terminal of three-terminal voltage-stabilizing chip IC 1 connection diode D2 and
Output voltage U1.
A kind of 3. constant-current source circuit for DC load according to claim 1, it is characterised in that the control circuit
Including chip IC 1, capacitance C1 and resistance R18, first drive module includes triode VT3, unidirectional thyristor Q1 and resistance
R3, the second drive module include triode VT4, unidirectional thyristor Q2 and resistance R4, the 3rd drive module include triode VT5,
Unidirectional thyristor Q3 and resistance R5, voltage detection module include diode D1, triode VT1 and triode VT2；The resistance R3
One end connection resistance R1, resistance R4, resistance R6, resistance R7, the anode of diode D4, the collector of triode VT3, triode
The collector of VT4, the collector of triode VT5,4 pins of chip IC 1,8 pins and power supply VCC of chip IC 1, resistance R1's
Other end connection resistance R18, the collector of triode VT1, the collector of triode VT2,2 pins of chip IC 1 and chip IC 1
6 pins, base stage connection resistance R17, the other end of resistance R18, capacitance C1, capacitance C2, capacitance C3, the capacitance of triode VT1
C4, the anode of storage battery E1, the cathode of one-way SCR Q1 ~ Q3, the base stage of triode VT1, the emitter and core of triode VT2
1 pin of piece IC1, the other end of base stage connection resistance R17 and the anode of diode D1 of triode VT2, the moon of diode D1
The cathode of pole connection diode D7, the other end of the 5 pins connection capacitance C1 of chip IC 1, the 3 pins connection resistance of chip IC 1
Other end connection resistance R8, the resistance R12 of R2 and resistance R9, resistance R2 and the other end of capacitance C2, the other end of resistance R8 connect
The other end of connecting resistance R19 and capacitance C3, the other end of the other end connection capacitance C4 of resistance R19, the other end of resistance R9 connect
The control pole of one-way SCR Q1 is connect, the anode of one-way SCR Q1 connects the other end of resistance R3 and the base stage of triode VT3,
The anode of the other end connection diode D1 of emitter connection the resistance R10 and resistance R11, resistance R11 of triode VT1, resistance
The cathode of the other end connection diode D2 of R12, the control pole of the anode connection one-way SCR Q2 of diode D2 are unidirectional controllable
The other end of anode connection resistance R4 and the base stage of triode VT4 of silicon Q2, the emitter connection resistance R13 of triode VT4 and
The anode of the other end connection diode D3 of resistance R14, resistance R14, the cathode connection resistance R5 of diode D4, resistance R5's is another
The other end, the anode of one-way SCR Q3 and the base stage of triode VT5 of one end connection resistance R6, the emitter of triode VT5
Connect the other end, resistance R15 and the resistance R16 of resistance R7, the anode of the other end connection diode D5 of resistance R16, resistance R10
The other end of other end connection resistance R3, the other end of resistance R15, the cathode of diode D1, the cathode of diode D3, two poles
The cathode of pipe D5, the cathode of diode D6, the anode of the anode of diode D7 and storage battery E1, the anode connection electricity of diode D6
Hinder R20, the control pole of the other end connection one-way SCR Q3 of resistance R20.
A kind of 4. constant-current source circuit for DC load according to claim 3, it is characterised in that the chip IC 1
For NE555 timers.
A kind of 5. constant-current source circuit for DC load according to claim 3, it is characterised in that the diode
D1, D3, D5 are light emitting diode.
A kind of 6. constant-current source circuit for DC load according to claim 3, it is characterised in that the power supply VCC
For 5V direct currents.
A kind of 7. constant-current source circuit for DC load according to claim 2, it is characterised in that the chip IC 2
Model LM7805.
A kind of 8. constant-current source circuit for DC load according to claim 2, it is characterised in that the diode D2
For zener diode.
9. a kind of constant-current source circuit for DC load according to claim 2, it is characterised in that the load is storage
Battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711238921.1A CN107947312A (en) | 2017-11-30 | 2017-11-30 | A kind of constant-current source circuit for DC load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711238921.1A CN107947312A (en) | 2017-11-30 | 2017-11-30 | A kind of constant-current source circuit for DC load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107947312A true CN107947312A (en) | 2018-04-20 |
Family
ID=61947046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711238921.1A Pending CN107947312A (en) | 2017-11-30 | 2017-11-30 | A kind of constant-current source circuit for DC load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107947312A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108695960A (en) * | 2018-04-27 | 2018-10-23 | 武汉中智德远科技开发有限公司 | A kind of voltage-stabilizing and energy-saving charge controller |
| CN110429488A (en) * | 2019-06-06 | 2019-11-08 | 国网山东省电力公司高青县供电公司 | A kind of direct current cabinet replacement portable load switching power supply box |
| CN117060552A (en) * | 2023-10-11 | 2023-11-14 | 联合瓦特技术有限公司 | Charging pile charging stage switching circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203522153U (en) * | 2013-09-11 | 2014-04-02 | 深圳市瀚强科技有限公司 | LED television backlight short circuit protection circuit and short circuit protector |
| CN204465070U (en) * | 2015-03-10 | 2015-07-08 | 朱亚旭 | A kind of constant current mode step charge circuit |
| CN106712467A (en) * | 2017-03-27 | 2017-05-24 | 哈尔滨理工大学 | Energy-saving switch power supply with self-locking function |
-
2017
- 2017-11-30 CN CN201711238921.1A patent/CN107947312A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203522153U (en) * | 2013-09-11 | 2014-04-02 | 深圳市瀚强科技有限公司 | LED television backlight short circuit protection circuit and short circuit protector |
| CN204465070U (en) * | 2015-03-10 | 2015-07-08 | 朱亚旭 | A kind of constant current mode step charge circuit |
| CN106712467A (en) * | 2017-03-27 | 2017-05-24 | 哈尔滨理工大学 | Energy-saving switch power supply with self-locking function |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108695960A (en) * | 2018-04-27 | 2018-10-23 | 武汉中智德远科技开发有限公司 | A kind of voltage-stabilizing and energy-saving charge controller |
| CN110429488A (en) * | 2019-06-06 | 2019-11-08 | 国网山东省电力公司高青县供电公司 | A kind of direct current cabinet replacement portable load switching power supply box |
| CN117060552A (en) * | 2023-10-11 | 2023-11-14 | 联合瓦特技术有限公司 | Charging pile charging stage switching circuit |
| CN117060552B (en) * | 2023-10-11 | 2024-01-12 | 联合瓦特技术有限公司 | Charging pile charging stage switching circuit |
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Application publication date: 20180420 |