CN110474421A - A kind of uninterruption power source and method of supplying power to for more biometric apparatus - Google Patents
A kind of uninterruption power source and method of supplying power to for more biometric apparatus Download PDFInfo
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- CN110474421A CN110474421A CN201910699190.3A CN201910699190A CN110474421A CN 110474421 A CN110474421 A CN 110474421A CN 201910699190 A CN201910699190 A CN 201910699190A CN 110474421 A CN110474421 A CN 110474421A
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- 238000000034 method Methods 0.000 title claims description 15
- 230000005611 electricity Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
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- 230000035484 reaction time Effects 0.000 description 1
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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
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of uninterruptible power supplies for multiple bio-identification instrument, including AC-DC circuit, alternating current/battery power switching unit, battery unit, the mains AC received is divided into two-way by AC-DC circuit, biometric apparatus is flowed into all the way, another way flows into battery unit, battery module is in charged state when mains AC normal power supply, charging module for power supply when mains AC powers off, whether alternating current-battery power switching module is normal by judging mains AC power supply, so as to adjust powering mode.The uninterruptible power supply can quickly identify that alternating current powers off and provides efficient alternating current/battery power switching.
Description
Technical field
The present invention relates to power distribution circuit field, in particular to a kind of uninterruption power source for more biometric apparatus
And method of supplying power to.
Background technique
In recent years, with the development of science and technology major public place such as airport, railway station, performance place etc. and bank,
Teaching building, company etc. have all used in small place the biometric apparatus of security protection, such as fingerprint identification device, facial recognition device and rainbow
Film identifies equipment etc., and still, these biometric apparatus use single service more at present, when encountering power-off condition, these equipment
Can because suddenly power-off generation it is out of service, can not Backup Data, the problems such as hardware fault.It therefore, is biometric apparatus
There is provided uninterruptible power supply very it is necessary to.
But existing uninterrupted power supply circuit and the most complex circuit of method of supplying power to, the circuit switching reaction time is too long, in
A kind of uninterruption power source device for energy-storage system is provided in 208955739 U of state patent document CN, including is included
AC/DC power module, DC/DC power module, normally-open normally-close type solid-state relay, filtering and protection circuit, lithium iron battery module,
Battery protection module, still, this power supply device may only provide one of tetra- kinds of voltage of 24V, 12V, 36V and 48V.
Summary of the invention
The purpose of the present invention is to provide a kind of uninterruption power source and method of supplying power to for more biometric apparatus,
Circuit complexity is avoided, the shortcomings that power switching low-response, while required voltage can be provided again for multiple biometric apparatus.
To achieve the goals above, the present invention provides a kind of uninterruption power source, comprising:
AC/DC circuit is connect with mains power grid, converts the High Level AC Voltage in the mains power grid to directly
Galvanic electricity, and divide two-way to export in direct current, the first via is biometric apparatus power supply, and the second tunnel is battery unit charging, simultaneously
To alternating current/battery power switching unit power supply；
Alternating current/battery power switching unit, for incuding the output voltage of the AC/DC circuit, and regulating cell unit
Direct current electricity output；
Battery unit, the input terminal of battery unit connect the second road DC output end mouth of the AC/DC circuit, battery
The output end of unit is connected with the alternating current/battery power switching unit；
Charge mode is in when the mains power grid normal power supply, when the mains power grid stops powering
In powering mode.
Preferably, the alternating current/battery power switching unit includes: detection decision circuitry and switching circuit；
The detection circuit includes: concatenated second resistance and the first triode, and the pole the c ground connection of the first triode, the pole e connects
The node being connected between the 6th resistance and the 5th resistance, the other end of the 6th resistance connect 3rd resistor, the 5th resistance it is another
End connection the second triode the pole c, the second triode the pole b ground connection, the pole e connect the 4th resistance, the other end of the 4th resistance with
The other end of 3rd resistor is connected；
The switching circuit includes: the PMOS tube that the node between 3rd resistor R66 and the 4th resistance R3 is connected, PMOS
The pole D of pipe is connected with the second connecting terminal of battery unit output end, and the pole S of PMOS tube is connected with the second counnter attack diode, the
Node between the other end of two counnter attack diodes and the first counnter attack diode and biometric apparatus is connected, meanwhile, PMOS tube
The pole S and the second counnter attack diode between node at be connected with pull down resistor, the other end ground connection of pull down resistor, the first counnter attack two
Third connecting terminal is connected at another node between pole pipe and biometric apparatus, the other end ground connection of third connecting terminal is excellent
Choosing, the battery unit includes: battery, the first connecting terminal and the second connecting terminal；
Preferably, the battery unit includes: battery, the first connecting terminal and the second connecting terminal；
First connecting terminal one end is connected with the AC/DC DC side, and the other end is connected to form with cell input terminal
The battery unit charging input end；
Second connecting terminal one end and battery output are connected to form the battery unit power supply output end, the other end
It is connected with the PMOS tube.
Preferably, the AC/DC unit output voltage and electric current meet the following conditions:
1)VEquipment is minimum≤VAC-DC output≤VEquipment is maximum；
2)VBattery input is minimum≤VAC-DC output≤VBattery input is maximum；
3)IEquipment is maximum≤IAC-DC output。
Preferably, the battery unit output voltage and electric current meet the following conditions:
1)VEquipment is minimum≤VBattery output≤VEquipment is maximum；
2)VBattery output≤VAC-DC output；
3)IEquipment is maximum≤IBattery output。
Preferably, the uninterruption power source can add any DC/DC.
The present invention also provides a kind of uninterrupted power supply methods, comprising:
1) mains AC flows into AC/DC circuit, is converted to first via direct current and the second road direct current electricity output, the first via
Direct current flows into biological identification device, and the second road direct current flows into battery unit, meanwhile, alternating current/battery power switching unit connects
Enter the second road direct current circuit；
2) alternating current/battery power switching unit judges power supply situation；
3) when mains AC normal power supply, switching circuit is disconnected in alternating current/battery power switching unit, battery unit
Current supply circuit disconnects, and first via DC current is biological identification device power supply, and the second road direct current is battery unit charging；
4) when mains AC stops powering, switching circuit closure, battery unit in alternating current/battery power switching unit
Current supply circuit connection is biometric apparatus power supply by battery unit.
The beneficial effect that a kind of uninterruptible power supply provided by the invention has is, the alternating current in uninterruption power source/
Battery power switching element circuit structure is simple, must be cooperated by two triodes and a PMOS tube and be achieved that in alternating current friendship
Galvanic electricity stops switching power supply mode in the case where power supply, meanwhile, two triodes are led by the judgement control circuit to voltage
Logical and cut-off, so that the powering mode of quick Switching power is realized, in the addition DC/DC module of the output end selectivity of power supply
Multiple biometric apparatus and peripheral equipment voltage requirements can be met.
A kind of uninterrupted power supply method provided by the invention, it is ensured that a variety of biometric apparatus stop in mains AC
Continued to run when power supply, avoid because suddenly power-off caused by device hardware damage, device data can not back up, equipment without
The normal operation condition generation of method.
It should be appreciated that aforementioned description substantially and subsequent detailed description are exemplary illustration and explanation, it should not
As the limitation to the claimed content of the present invention.
Detailed description of the invention
With reference to the attached drawing of accompanying, the more purposes of the present invention, function and advantage are by the as follows of embodiment through the invention
Description is illustrated, in which:
Fig. 1 shows a kind of schematic diagram of uninterruptible power supply for multiple bio-identification instrument provided by the invention；
Fig. 2 shows a kind of system block diagrams of the uninterruptible power supply for multiple bio-identification instrument provided by the invention；
Fig. 3 shows a kind of alternating current for multiple bio-identification instrument/battery power switching unit frame provided by the invention
Figure.
Appended drawing reference:
1- battery；P1-AC/DC circuit；P2- alternating current/battery power switching unit P3- battery unit
D1- the first counnter attack diode；D3- zener diode；D7- the second counnter attack diode
Q1-PMOS pipe；The first triode of Q6-；The second triode of Q7-；
The 4th resistance of R3-；R59- second resistance；The 5th resistance of R64-；The 6th resistance of R65-；R66- 3rd resistor；R68-
First resistor；R69- pull down resistor；
The first connecting terminal of J7-；The second connecting terminal of J19-, J5- third connecting terminal.
Specific embodiment
By reference to exemplary embodiment, the purpose of the present invention and function and the side for realizing these purposes and function
Method will be illustrated.However, the present invention is not limited to exemplary embodiment as disclosed below；Can by different form come
It is realized.The essence of specification is only to aid in those skilled in the relevant arts' Integrated Understanding detail of the invention.
Hereinafter, the embodiment of the present invention will be described with reference to the drawings.In the accompanying drawings, identical appended drawing reference represents identical
Or similar component or same or like step.
According to embodiments of the present invention, a kind of uninterruption power source for a variety of bio-identification instrument is provided, such as Fig. 1 institute
Show, which includes: AC/DC circuit P1, is connect with mains power grid, by the high pressure in mains power grid
AC conversion is direct current, and divides two-way to export in direct current, and the first via is biometric apparatus power supply, and the second tunnel is battery
Unit charging, while powering to alternating current/battery power switching unit.
Alternating current/battery power switching unit P2, by incuding the AC/DC circuit P1, whether there is or not regulating and controlling voltage power supply power supply moulds
Formula.
The charging input end mouth of battery unit P3, battery unit P3 are connected with the DC side of AC/DC circuit P1, for electricity output
Port is connected with alternating current/battery power switching unit P2, and battery unit is in charge mode when mains power grid normal power supply,
Battery unit is in powering mode when mains power grid stops power supply.
Specifically, city's AC network conveys the alternating voltage that variation range is 100-240V, warp into AC/DC circuit P1
Two-way direct current is exported after AC/DC circuit P1, the first via is fed directly to biometric apparatus through the first counnter attack diode D1.The
Two tunnels flow into battery unit P3 through the first connecting terminal J7 of battery unit P3 charging input end, charge to battery 1, while the road
Direct current flows into alternating current/battery power switching unit P2 after zener diode D3 and first resistor R68 partial pressure.
In alternating current/battery power switching unit P2, second resistance R59 is connect with the pole b of the first triode Q6, and the one or three
The pole c of pole pipe Q6 is grounded, and the pole e is connected to the node between the 6th resistance R65 and the 5th resistance R64, and the 6th resistance R65's is another
End connection 3rd resistor R66, the other end of the 5th resistance 64 connect the pole c of the second triode Q7, and the pole b of the second triode Q7 connects
Ground, the pole e connect the 4th resistance R3, and the other end of R3 is connected with the other end of 3rd resistor R66, and the pole G of PMOS tube Q1 is connected to
Node between 3rd resistor R66 and the 4th resistance R3, the pole D of PMOS tube Q1 connect with the second of battery unit P3 power supply output end
Line terminals J19 be connected, the pole S of PMOS tube Q1 is connected with the second counnter attack diode D7, the other end of the second counnter attack diode D7 and
Node between first counnter attack diode D1 and biometric apparatus is connected, meanwhile, the pole S and two pole of the second counnter attack of PMOS tube Q1
Pull down resistor R69, the other end ground connection of pull down resistor R69, the first counnter attack diode D1 and life are connected at node between pipe D7
Third connecting terminal J5, the other end ground connection of third connecting terminal are connected at another node between object identification equipment.
In addition, first one end connecting terminal J7 is connected with AC/DC circuit P1 DC side, the other end and 1 input terminal phase of battery
The charging input end of battery unit P3 is even formed, second one end connecting terminal J19 and 1 output end of battery are connected to form battery unit
The power supply output end of P3, the other end are extremely connected with the D of PMOS tube.
When city's AC network normal power supply, AC/DC circuit P1 exports two-way direct current, and the first via is through two pole of the first counnter attack
Pipe D1 is fed directly to biometric apparatus.Second tunnel flows into electricity through the first connecting terminal J7 of battery unit P3 charging input end
Pool unit P3 charges to battery 1, while the road direct current flows into city after zener diode D3 and first resistor R68 partial pressure
Electricity/battery power switching unit P2, alternating current/battery power switching unit P2 is interior to drive the one or three after second resistance R59 current limliting
Pole pipe Q6 conducting, after conducting, the c grade of the first triode Q6 and the pole the b ground connection of the second triode Q7 become low level, the two or three pole
Pipe Q7 cut-off, 3rd resistor R66 and the 4th resistance R3 are pull-up resistor, the second connecting terminal with battery unit P3 output end
J19 is connected, and therefore, the G of PMOS tube Q1 extremely high level, the pole S and the pole D of PMOS tube turn off at this time, and the output loop of battery closes
It is disconnected.The first via direct current that mains AC is exported through AC/DC circuit P1 is directly that equipment supplies through the first counnter attack diode D1
Electricity, the second road direct current are the charging of battery 1.
When city's AC network stops powering, AC/DC circuit Non voltage output, at this point, the first triode Q6 ends, second
Triode Q7 conducting, therefore the G of PMOS tube Q1 extremely low level, the pole S of PMOS tube Q1 are connected with the pole D, battery output loop closes
It closes, direct current is exported from battery unit P3 and is powered through the second counnter attack diode D7 to equipment.In addition, the second counnter attack diode D7 with
Pull down resistor R69 is in parallel, and pull down resistor R69 ground connection guarantees that the second counnter attack diode D7 reversely ends reliably.
According to an embodiment of the invention, AC/DC unit P1 output voltage and electric current meet the following conditions:
1)VEquipment is minimum≤VAC-DC output≤VEquipment is maximum；
2)VBattery input is minimum≤VAC-DC output≤VBattery input is maximum；
3)IEquipment is maximum≤IAC-DC output。
According to an embodiment of the invention, battery unit P3 output voltage and electric current meet the following conditions:
1)VEquipment is minimum≤VBattery output≤VEquipment is maximum；
2)VBattery output≤VAC-DC output；
3)IEquipment is maximum≤IBattery output。
The another embodiment of the present embodiment adds a DC/DC module, alternating current/battery in the above-described embodiment
A DC/DC module is connected between power switching unit and biometric apparatus, can convert powered by direct current to a variety of different electricity
The direct current of pressure value is used for multiple and different biometric apparatus and other peripheral equipments.
As Figure 2-3, Fig. 2 shows a kind of uninterruptible power supplies for multiple bio-identification instrument provided by the invention
System block diagram, Fig. 3 show a kind of alternating current for multiple bio-identification instrument/battery power switching unit frame provided by the invention
Figure.
According to fig. 2-3, the present embodiment additionally provides a kind of uninterrupted power supply method, comprising the following steps:
1) mains AC flows into AC/DC circuit, is converted to first via direct current and the second road direct current electricity output, the first via
Direct current flows into biological identification device, and the second road direct current flows into battery unit, meanwhile, alternating current/battery power switching unit connects
Enter the second road direct current circuit；
2) alternating current/battery power switching unit judges power supply situation；
3) when mains AC normal power supply, switching circuit is disconnected in alternating current/battery power switching unit, battery unit
Current supply circuit disconnects, and first via DC current is biological identification device power supply, and the second road direct current is battery unit charging；
4) when mains AC stops powering, switching circuit closure, battery unit in alternating current/battery power switching unit
Current supply circuit connection is biometric apparatus power supply by battery unit.
A kind of embodiment of the uninterrupted power supply method of the present embodiment are as follows:
It a kind of the use of uninterruption power source provided by the invention is that biometric apparatus is powered, voltage transformation is in 100-
The mains AC of 240V range flows into AC/DC circuit, and AC conversion is direct current, AC/DC circuit output by AC/DC circuit
Circuit is divided into two-way, and the first via is connected with biometric apparatus, and the second tunnel is connected with battery unit, while alternating current/battery switching
Unit is also connected into the second tunnel.
In the uninterrupted power supply method of present embodiment, uninterrupted power supply method includes two kinds of powering modes, one is
Mains AC power supply, another kind are battery power supplies, and two kinds of powering modes are powered according to alternating current in uninterruption power source/battery
The testing result of switch unit switches over, as shown in figure 3, alternating current/battery power switching unit include detection decision circuitry and
Switching circuit, wherein detection decision circuitry passes through the voltage cut-out circuit of the second road direct current of induction, and switching circuit is used for
Control battery unit current supply circuit.
Specifically, first via direct current is directly biometric apparatus power supply when mains power grid normal power supply, the
Two road direct currents flow into battery unit, meanwhile, the detection accessed in alternating current/battery power switching unit of the second road direct current is sentenced
Deenergizing senses that the voltage of direct current, detection decision circuitry control switch circuit shutdown, switching circuit turn off so that battery list
First current supply circuit disconnects, at this point, battery unit is in charge mode, is directly known by city's alternating current after AC/DC circuit for biology
Other equipment power supply.
When mains power grid stops powering, AC/DC circuit is without output direct current, at this point, alternating current/battery power switching
Detection decision circuitry in unit cannot sense the voltage of direct current, detection decision circuitry control switch circuit conducting, switch
Circuit is connected so that battery unit current supply circuit is closed, and it is directly biological knowledge by battery unit that battery unit, which is in powering mode,
Other equipment power supply.
By turn-on time relay of connecting in the uninterruption power source of the present embodiment, the setting every 2min of mains AC is disconnected
It is electric primary, 1min is powered off every time, is worked repeatedly 4600 times or more by this rule, and during this, equipment can be worked normally, and not find to dodge
The problems such as screen, blank screen, data exception.Proof supplies power with double circuit the achievable seamless switching of device.
In conjunction with the explanation and practice of the invention disclosed here, the other embodiment of the present invention is for those skilled in the art
It all will be readily apparent and understand.Illustrate and embodiment is regarded only as being exemplary, true scope of the invention and purport are equal
It is defined in the claims.
Claims (7)
1. a kind of uninterruption power source characterized by comprising
AC/DC circuit is connect with mains power grid, converts direct current for the High Level AC Voltage in the mains power grid
Electricity, and divide two-way to export in direct current, the first via is biometric apparatus power supply, and the second tunnel is battery unit charging, while to
Alternating current/battery power switching unit power supply；
Alternating current/battery power switching unit, for incuding the output voltage of the AC/DC circuit, and regulating cell unit is straight
Galvanic electricity output；
Battery unit, the input terminal of battery unit connect the second road DC output end mouth of the AC/DC circuit, battery unit
Output end be connected with the alternating current/battery power switching unit；
It is in charge mode when the mains power grid normal power supply, is in when the mains power grid stops and powering
Powering mode.
2. uninterruption power source according to claim 1, which is characterized in that the alternating current/battery power switching unit
It include: detection decision circuitry and switching circuit；
The detection circuit includes；The pole c of concatenated second resistance and the first triode, the first triode is grounded, and the pole e is connected to
Node between 6th resistance and the 5th resistance, the other end of the 6th resistance connect 3rd resistor, and the other end of the 5th resistance connects
The pole c of the second triode is connect, the pole the b ground connection of the second triode, the pole e connects the 4th resistance, the other end and third of the 4th resistance
The other end of resistance is connected；
The switching circuit includes: the PMOS tube that the node between 3rd resistor R66 and the 4th resistance R3 is connected, PMOS tube
The pole D is connected with the second connecting terminal of battery unit output end, and the pole S of PMOS tube is connected with the second counnter attack diode, and second is anti-
Node between the other end of anti-diode and the first counnter attack diode and biometric apparatus is connected, meanwhile, the pole S of PMOS tube
Pull down resistor, the other end ground connection of pull down resistor, the first counnter attack diode are connected at node between the second counnter attack diode
Third connecting terminal, the other end ground connection of third connecting terminal are connected at another node between biometric apparatus.
3. uninterruption power source according to claim 1 or 2, which is characterized in that the battery unit include: battery,
First connecting terminal and the second connecting terminal；
First connecting terminal one end is connected with the AC/DC DC side, and the other end is connected to form described with cell input terminal
The input terminal of battery unit；
Second connecting terminal one end and battery output are connected to form the output end of the battery unit, the other end with it is described
The S of PMOS tube is extremely connected.
4. uninterruption power source according to claim 1, which is characterized in that the AC/DC unit output voltage and electricity
Stream meets the following conditions:
1)VEquipment is minimum≤VAC-DC output≤VEquipment is maximum；
2)VBattery input is minimum≤VAC-DC output≤VBattery input is maximum；
3)IEquipment is maximum≤IAC-DC output。
5. uninterruptible power supply according to claim 1, which is characterized in that the battery unit output voltage and electric current meet
The following conditions:
1)VEquipment is minimum≤VBattery output≤VEquipment is maximum；
2)VBattery output≤VAC-DC output；
3)IEquipment is maximum≤IBattery output。
6. uninterruptible power supply according to claim 1, which is characterized in that the uninterruption power source can add any
DC/DC module.
7. a kind of uninterrupted power supply method, comprising:
1) mains AC flows into AC/DC circuit, is converted to first via direct current and the second road direct current electricity output, first via direct current
Electric current enters biological identification device, and the second road direct current flows into battery unit, meanwhile, alternating current/battery power switching unit access the
Two road direct current circuits；
2) alternating current/battery power switching unit judges power supply situation；
3) when mains AC normal power supply, switching circuit is disconnected in alternating current/battery power switching unit, battery unit power supply
Circuit disconnects, and first via DC current is biological identification device power supply, and the second road direct current is battery unit charging；
4) when mains AC stops powering, switching circuit closure in alternating current/battery power switching unit, battery unit power supply
Circuit communication is biometric apparatus power supply by battery unit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115940365A (en) * | 2023-03-13 | 2023-04-07 | 北京金诺美科技股份有限公司 | Power supply circuit, method and device capable of configuring battery module and electric equipment |
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| CN206850517U (en) * | 2017-04-25 | 2018-01-05 | 深圳市中旭源科技有限公司 | The double-input uninterrupted voltage-stabilizing switch power source of paralleling switch type |
| CN208890412U (en) * | 2018-09-20 | 2019-05-21 | 珠海格力电器股份有限公司 | Household appliance powered by battery |
| CN110011400A (en) * | 2019-04-01 | 2019-07-12 | 太仓中科信息技术研究院 | A kind of bus platform LED display backup power supply intelligent switching system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115940365A (en) * | 2023-03-13 | 2023-04-07 | 北京金诺美科技股份有限公司 | Power supply circuit, method and device capable of configuring battery module and electric equipment |
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Inventor after: Chen Ping Inventor after: Che Junda Inventor after: Zhang Jinren Inventor after: Wang Kai Inventor before: Che Junda Inventor before: Zhang Jinren Inventor before: Wang Kai Inventor before: Chen Ping |
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Application publication date: 20191119 |