CN109873489A - A kind of power-supply management system of instrument of surveying and mapping - Google Patents

A kind of power-supply management system of instrument of surveying and mapping Download PDF

Info

Publication number
CN109873489A
CN109873489A CN201910161514.8A CN201910161514A CN109873489A CN 109873489 A CN109873489 A CN 109873489A CN 201910161514 A CN201910161514 A CN 201910161514A CN 109873489 A CN109873489 A CN 109873489A
Authority
CN
China
Prior art keywords
module
power source
current
voltage
way
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910161514.8A
Other languages
Chinese (zh)
Other versions
CN109873489B (en
Inventor
张博
范兆红
计鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Intellectual Property Management Co ltd
Original Assignee
HUATONG XIN'AN (BEIJING) SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HUATONG XIN'AN (BEIJING) SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd filed Critical HUATONG XIN'AN (BEIJING) SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Priority to CN201910161514.8A priority Critical patent/CN109873489B/en
Publication of CN109873489A publication Critical patent/CN109873489A/en
Application granted granted Critical
Publication of CN109873489B publication Critical patent/CN109873489B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a kind of power-supply management systems of instrument of surveying and mapping, including main power source monitoring and protecting module, backup power source protective module, two-way Charge Management monitoring modular, two-way electric discharge management monitoring modular and multi-way switch circuit.The present invention guarantees single machine high reliability by system-level and device level reliability design;It is designed by shielding, filtering and filter, realizes good Electro Magnetic Compatibility;Good temperature drift control is realized by temperature-compensation circuit, improves control and detection accuracy.Power-supply management system of the invention is small in size, low in energy consumption, highly reliable, solves the problems, such as that the precision controlling requirement that power supply management device is faced in charge and discharge control and detection conditioning is high, temperature drift control is difficult.

Description

A kind of power-supply management system of instrument of surveying and mapping
Technical field
The present invention relates to a kind of electronic technology fields, more specifically more particularly to a kind of power supply for instrument of surveying and mapping Management system.
Background technique
In survey field in the case that operation does not have alternating current, due to the particularity of inertia device in instrument of surveying and mapping, Instrument of surveying and mapping is needed to be in the working condition of uninterrupted power supply always in mapping process.Therefore high-power instrument just needs great Rong The backup power source (lithium battery group) of amount is instrument power supply.Increase in such a way that double group backup power sources are powered jointly under normal conditions Add the capacity of battery pack, while when one group of dead battery capability, can more renew battery in the case where uninterrupted power supply.This Sample just needs the charging current to every group of battery pack, charging voltage, discharge current, discharge voltage to be monitored.If battery pack Electric current, voltage will result in that battery pack charging is uneven, electric discharge is uneven there are error and makes battery damage or generate peace Full hidden danger.Existing monitoring technology, majority are the charge and discharge voltage and electric current that battery is detected by flows resistance.It first has to To an average current, that is, the current value that total load current is obtained divided by battery sum, each battery discharge current with should Electric current compares, if the discharge current of this group of battery is greater than average current and will turn down discharge voltage otherwise discharge voltage is turned up.
It is relatively high that this kind of technology reaches the system power dissipation flowed by series resistor, in system stability, flexibility side Face is poor.Current acquisition module is also needed simultaneously, system cost cost is relatively high.It requires to compare in some pairs of system stability Under height, the scene for being large current discharge, need to strictly limiting system power dissipation expense, just become impractical with.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of power-supply management system of instrument of surveying and mapping.Pass through System-level and device level reliability design guarantees single machine high reliability;It is designed, is realized good by shielding, filtering and filter Electro Magnetic Compatibility;Good temperature drift control is realized by temperature-compensation circuit, improves control and detection accuracy.Of the invention Power-supply management system is small in size, low in energy consumption, highly reliable, solves power supply management device in charge and discharge control and detection conditioning The problem that the precision controlling requirement faced is high, temperature drift control is difficult.
A kind of power-supply management system of instrument of surveying and mapping provided by the invention, including main power source monitoring and protecting circuit module M1, Backup power source protective module M2, two-way Charge Management monitoring modular M3, two-way electric discharge management monitoring modular M4 and multy-way switching electricity Road module M5;The external input terminals of main power source monitoring and protecting module M1 connect main power source E0, and output end is separately connected two-way charging Manage monitoring modular M3 and multi-way switch circuit module M5;The exterior input terminal of the backup power source protective module M2 is distinguished Backup power source E1 and backup power source E2 is connected, output end connects two-way electric discharge management monitoring modular M4;The two-way Charge Management The output end of monitoring modular M3 connects backup power source protective module M2;The input terminal of the multi-way switch circuit module M5 is also connected with Two-way electric discharge management monitoring modular M4, external output end connect instrument of surveying and mapping M0.
Further, main power source monitoring and protecting circuit module M1 include main power source assurance module C1, current sampling resistor R1, Voltage sample resistance R2, metal-oxide-semiconductor 1Q1 is flowed, metal-oxide-semiconductor 2Q2 is flowed, flows metal-oxide-semiconductor 3Q3, diode, voltage amplifier U1, electricity Ductility limit circuit U 2, reference current source A1 and reference voltage source A2, main power source assurance module C1 respectively with flow metal-oxide-semiconductor 1Q1, Flow metal-oxide-semiconductor 2Q2, stream metal-oxide-semiconductor 3Q3 be connected, voltage amplifier U1 respectively with reference current source A1 and current sampling resistor R1, Current limit circuit U2 respectively with reference voltage source A2 and voltage sample resistance R2, supervise by stream metal-oxide-semiconductor 3Q3 and two-way Charge Management It surveys module M3 to be connected, after current sampling resistor R1 is connected with voltage sample resistance R2, be connected with multi-way switch circuit module M5, from And make main power source monitoring and protecting circuit module that there is input power protection to error-polarity connection, input power overvoltage/undervoltage, export clamper, is defeated Overcurrent protection out.
Further, two-way Charge Management monitoring modular M3 includes flowing voltage reference module M31, sampling conditioning module M32, PWM control module M33, two-tube drive module M34, synchronous buck module M35, current sampling module M36 and voltage sample Module M37;Main power source E0 is respectively that backup power source 1E1 and backup power source 2E2 charges by two-way synchronous buck module M35, In charging process, respectively by current sampling module M36 and voltage sample module M37 to backup power source 1E1 and backup power source The charging current and charging voltage of 2E2 carries out real-time sampling, while main power source E0 is adopted by stream voltage reference module M31 driving Sample conditioning module M32 receives sampled data, is further divided into after two-way and controls PWM control module M33 respectively, then passes through two-tube driving Module M34 is respectively adjusted charging current and charging voltage, thus reach backup power source 1E1 and backup power source 2E2 voltage, The height of electric current is consistent.
Further, two-way electric discharge management monitoring modular M4 includes current mirror sample circuit module 1M41, current mirror Sample circuit module 2M42, metal-oxide-semiconductor 5Q5 is flowed, metal-oxide-semiconductor 6Q6 is flowed, flows voltage reference module M45, electric discharge current-sharing module M43 and DC-DC power module M44;Sampling monitoring two-way backup power source is put respectively by the current mirror sample circuit module M41 Electric current is compared with stream voltage reference module M45, and monitoring discharge process is in stream metal-oxide-semiconductor conducting in DSON resistance value Pressure drop flow metal-oxide-semiconductor by the way that the control of the output signal of current-sharing module is external when wherein two groups of battery discharge currents are inconsistent The linear regulating cell of conducting degree discharge current, so that reaching two-way backup power source banishes electricity.
Further, two-way Charge Management monitoring modular M3 is while monitoring battery charging voltage, charging current, in conjunction with Voltage, the electric current of two-way electric discharge management monitoring modular M4 monitoring battery discharge, to make the charge and discharge height of battery combine, really The electricity for protecting every piece of battery can make full use of, and extend the service life of battery.
Further, the method compared by voltage sample, at the same provide main power source and backup power source, backup power source with it is standby With the uninterrupted seamless switching between power supply, and then reach that switching time is short, with carrying the high effect of power.
It is obtained by the present invention to have the beneficial effect that
Guarantee single machine high reliability by system-level and device level reliability design;Pass through shielding, filtering and filter Design, realizes good Electro Magnetic Compatibility;Good temperature drift control is realized by temperature-compensation circuit, improves control and detection Precision.Power-supply management system of the invention is small in size, low in energy consumption, highly reliable, and it is automatically controlled in charge and discharge to solve power supply management device The problem that the precision controlling requirement faced when system and detection conditioning is high, temperature drift control is difficult.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of power-supply management system of the invention;
Fig. 2 is a kind of schematic diagram of main power source monitoring and protecting circuit module embodiment;
Fig. 3 is a kind of schematic diagram of two-way Charge Management monitoring modular embodiment;
Fig. 4 is a kind of schematic diagram of two-way electric discharge management monitoring modular embodiment.
In figure: E0. main power source, E1. backup power source 1, E2. backup power source 2, M0. instrument of surveying and mapping, the monitoring of M1. main power source are protected Protection circuit module, M2. backup power source protective module, M3. two-way Charge Management monitoring modular, M4. two-way electric discharge management monitoring mould Block, M5. multi-way switch circuit module bracing wire, C1. main power source assurance module, R1. current sampling resistor, R2. voltage sample resistance, Q1. metal-oxide-semiconductor 1 is flowed, Q2. flows metal-oxide-semiconductor 2, and Q3. flows metal-oxide-semiconductor 3, and Q5. flows metal-oxide-semiconductor 1, and Q6. flows metal-oxide-semiconductor 1, U1. electricity Pressure amplifier, U2. current limit circuit, A1. reference current source, A2. reference voltage source, M31. flow voltage reference module, M32. conditioning module is sampled, M33.PWM control module, the two-tube drive module of M34., M35. synchronous buck module, M36. electric current adopts Egf block, M37. voltage sample module, M41. current mirror sample circuit module 1, M42. current mirror sample circuit module 2, Q5. metal-oxide-semiconductor 5 is flowed, Q6. flows metal-oxide-semiconductor 6, and M45. flows voltage reference module, M43. electric discharge current-sharing module and M44.DC- DC power module.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, the skill that the given examples are served only to explain the present invention Art scheme, is not intended to limit the scope of the present invention.
1, system power supply
Instrument of surveying and mapping is instrument power supply by system main power source, together in the case where there is 220V alternating current as shown in Figure 1: When using two-way Charge Management, charging monitoring modular be two-way backup power source charge.When main power source power-off, backup power source passes through Two-way electric discharge management, monitoring modular and multy-way switching module are instrument of surveying and mapping power supply.
System Working Principle
As shown in Figure 2: main power source monitoring and protecting circuit provides main power source multiple protection functions
Input power protection to error-polarity connection: when system power supply reversal connection Shi Junliu metal-oxide-semiconductor 1Q1 non-grid power supply, close Q1 pipe It is disconnected.
Input power overvoltage/undervoltage, output clamper: when system power supply over-voltage or it is under-voltage when, system is adopted by voltage sample resistance Collect current voltage, is compared by voltage amplifier U1 with reference voltage source.Metal-oxide-semiconductor 1Q1 is flowed by diode control, is made The out-put supply clamper of system is in the range of setting.
Output overcurrent protection: when overcurrent occurs in system power supply, system passes through current sampling resistor R3 acquisition system electric current.It is logical The grid for crossing active current limit circuit U2 control Q1 turns off Q1 in time, protects equipment.Different use environments can be passed through Different Protection parameters are equipped with, power requirement when instrument is able to satisfy aviation, vehicle-mounted, boat-carrying is tested is made.Making for instrument is expanded Use range.
As shown in Figure 3: the two-way Charge Management, charging monitoring modular, when system is that battery charges, charging current is logical It crosses 0.01 ohm of sampling resistor and gives sampled signal to electric current, voltage mirror sampling, conditioning circuit module.Charging voltage passes through Electricity group R1 and R2, which is divided, feeds back to electric current, voltage mirror sampling, conditioning circuit module for charging voltage.Electric current, voltage mirror are adopted Sample, conditioning circuit module will send respectively PWM controller to remove to control every road battery charging voltage, charging current after signal condition.
As shown in Figure 4: when backup power source E1 or E2 are that instrument is powered, the discharge current of backup power source E1 is by flowing The conducting resistance of metal-oxide-semiconductor 5Q5 acquires, and amplifies in current mirror sample circuit 1.The discharge current of backup power source E2 passes through equal The conducting resistance acquisition of metal-oxide-semiconductor 6Q6 is flowed, and is amplified in current mirror sample circuit 2.By backup power source E1's in current-sharing module The stream reference signal co- controlling of the same setting of discharge current signal of discharge current signal, backup power source E2 flows metal-oxide-semiconductor The grid voltage of 5Q5 and the grid voltage for flowing metal-oxide-semiconductor 6Q6.The equal of battery discharge current is controlled in certain voltage range Stream.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (6)

1. a kind of power-supply management system of instrument of surveying and mapping, which is characterized in that including main power source monitoring and protecting circuit module (M1), standby It is cut with power source protective module (M2), two-way Charge Management monitoring modular (M3), two-way electric discharge management monitoring modular (M4) and multichannel Change circuit module (M5);
The external input terminals of the main power source monitoring and protecting module (M1) connect main power source (E0), and output end is separately connected two-way and fills Fulgurite manages monitoring modular (M3) and multi-way switch circuit module (M5);
The exterior input terminal of the backup power source protective module (M2) is separately connected backup power source (E1) and backup power source (E2), output end connection two-way electric discharge management monitoring modular (M4);
The output end of the two-way Charge Management monitoring modular (M3) connects backup power source protective module (M2);
The input terminal of the multi-way switch circuit module (M5) is also connected with two-way electric discharge management monitoring modular (M4), external output end It connects instrument of surveying and mapping (M0).
2. power-supply management system according to claim 1, which is characterized in that main power source monitoring and protecting circuit module (M1) packet Main power source assurance module (C1) is included, current sampling resistor (R1), voltage sample resistance (R2), metal-oxide-semiconductor 1 (Q1) is flowed, flows MOS Pipe 2 (Q2) flows metal-oxide-semiconductor 3 (Q3), diode, voltage amplifier (U1), current limit circuit (U2), reference current source (A1) With reference voltage source (A2), main power source assurance module (C1) flows metal-oxide-semiconductor 2 (Q2) with stream metal-oxide-semiconductor 1 (Q1), respectively, flows Metal-oxide-semiconductor 3 (Q3) be connected, voltage amplifier (U1) respectively with reference current source (A1) and current sampling resistor (R1), current limit Circuit (U2) with reference voltage source (A2) and voltage sample resistance (R2), flows metal-oxide-semiconductor 3 (Q3) and two-way Charge Management is supervised respectively It surveys module (M3) to be connected, after current sampling resistor (R1) and voltage sample resistance (R2) connection, with multi-way switch circuit module (M5) be connected, thus make main power source monitoring and protecting circuit module have input power protection to error-polarity connection, input power overvoltage/undervoltage, Export clamper, output overcurrent protection.
3. power-supply management system according to claim 1, which is characterized in that two-way Charge Management monitoring modular (M3) includes It flows voltage reference module (M31), sampling conditioning module (M32), PWM control module (M33), two-tube drive module (M34), same Walk voltage reduction module (M35), current sampling module (M36) and voltage sample module (M37);Main power source (E0) is dropped by the way that two-way is synchronous Die block (M35) is respectively backup power source 1 (E1) and backup power source 2 (E2) charging, during the charging process, is adopted respectively by electric current The charging current and charging of egf block (M36) and voltage sample module (M37) to backup power source 1 (E1) and backup power source 2 (E2) Voltage carries out real-time sampling, while main power source (E0) passes through stream voltage reference module (M31) driving sampling conditioning module (M32) Sampled data is received, is further divided into after two-way and controls respectively PWM control module (M33), then respectively by two-tube drive module (M34) Charging current and charging voltage are adjusted, to reach backup power source 1 (E1) and backup power source 2 (E2) voltage, electric current Height is consistent.
4. power-supply management system according to claim 1, which is characterized in that two-way electric discharge manages monitoring modular (M4) and includes Current mirror sample circuit module 1 (M41), flows metal-oxide-semiconductor 5 (Q5), flows MOS at current mirror sample circuit module 2 (M42) Pipe 6 (Q6) flows voltage reference module (M45), electric discharge current-sharing module (M43) and DC-DC power module (M44);The electric current The discharge current of mirror image sample circuit module (M41) sampling monitoring backup power source 1 (E1) and backup power source 2 (E2) respectively, and it is equal Stream voltage reference module (M45) is compared, pressure drop of the monitoring discharge process in stream metal-oxide-semiconductor conducting in DSON resistance value, when When wherein two groups of battery discharge currents are inconsistent, pass through the external conducting journey for flowing metal-oxide-semiconductor of output signal control of current-sharing module The discharge current for spending linear regulation battery, so that reaching two-way backup power source banishes electricity.
5. power-supply management system according to claim 1, which is characterized in that two-way Charge Management monitoring modular (M3) is being supervised Survey battery charging voltage, charging current while, in conjunction with two-way discharge management monitoring modular (M4) monitoring battery discharge voltage, Electric current, so that the charge and discharge height of battery be made to combine, it is ensured that the electricity of every piece of battery can make full use of, and extend making for battery Use the service life.
6. multi-way switch circuit according to claim 1, which is characterized in that the method compared by voltage sample, simultaneously Main power source (E0) and backup power source 1 (E1) or backup power source 2 (E2) and backup power source 1 (E1) and backup power source 2 (E2) are provided Between uninterrupted seamless switching, and then reach that switching time is short, with carrying the high effect of power.
CN201910161514.8A 2019-03-04 2019-03-04 Power management system of surveying instrument Active CN109873489B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910161514.8A CN109873489B (en) 2019-03-04 2019-03-04 Power management system of surveying instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910161514.8A CN109873489B (en) 2019-03-04 2019-03-04 Power management system of surveying instrument

Publications (2)

Publication Number Publication Date
CN109873489A true CN109873489A (en) 2019-06-11
CN109873489B CN109873489B (en) 2021-11-05

Family

ID=66919711

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910161514.8A Active CN109873489B (en) 2019-03-04 2019-03-04 Power management system of surveying instrument

Country Status (1)

Country Link
CN (1) CN109873489B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110509810A (en) * 2019-09-23 2019-11-29 绵阳高新区恒奥电子科技有限公司 Charging pile with second source system
CN110718961A (en) * 2019-11-27 2020-01-21 成都天马微电子有限公司 Power supply circuit, control method thereof and display device
CN111478570A (en) * 2020-05-08 2020-07-31 中国南方电网有限责任公司超高压输电公司天生桥局 PMOS-based low-power-consumption redundant current-sharing circuit
CN111580590A (en) * 2020-05-08 2020-08-25 中国南方电网有限责任公司超高压输电公司天生桥局 NMOS-based low-power-consumption redundant current-sharing circuit
CN112751377A (en) * 2019-10-31 2021-05-04 上海威丁电子科技有限公司 Power supply control system and method based on temperature compensation
CN112886695A (en) * 2019-11-29 2021-06-01 台达电子工业股份有限公司 Uninterruptible power supply system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202282637U (en) * 2011-07-15 2012-06-20 深圳麦格米特电气股份有限公司 Smooth power supply cell switching circuit
CN204068246U (en) * 2014-03-14 2014-12-31 湖南芯丰微电子有限责任公司 A kind of low pressure drop low-power dissipation power supply protective circuit
CN105576814A (en) * 2014-10-13 2016-05-11 康舒科技股份有限公司 DC power supply redundancy system
US20170179760A1 (en) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Discrete energy reservoir with diagnostics

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202282637U (en) * 2011-07-15 2012-06-20 深圳麦格米特电气股份有限公司 Smooth power supply cell switching circuit
CN204068246U (en) * 2014-03-14 2014-12-31 湖南芯丰微电子有限责任公司 A kind of low pressure drop low-power dissipation power supply protective circuit
CN105576814A (en) * 2014-10-13 2016-05-11 康舒科技股份有限公司 DC power supply redundancy system
US20170179760A1 (en) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Discrete energy reservoir with diagnostics

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110509810A (en) * 2019-09-23 2019-11-29 绵阳高新区恒奥电子科技有限公司 Charging pile with second source system
CN112751377A (en) * 2019-10-31 2021-05-04 上海威丁电子科技有限公司 Power supply control system and method based on temperature compensation
CN110718961A (en) * 2019-11-27 2020-01-21 成都天马微电子有限公司 Power supply circuit, control method thereof and display device
CN110718961B (en) * 2019-11-27 2021-11-02 成都天马微电子有限公司 Power supply circuit, control method thereof and display device
CN112886695A (en) * 2019-11-29 2021-06-01 台达电子工业股份有限公司 Uninterruptible power supply system
EP3829025A1 (en) * 2019-11-29 2021-06-02 Delta Electronics, Inc. Uninterruptible power supply system
CN111478570A (en) * 2020-05-08 2020-07-31 中国南方电网有限责任公司超高压输电公司天生桥局 PMOS-based low-power-consumption redundant current-sharing circuit
CN111580590A (en) * 2020-05-08 2020-08-25 中国南方电网有限责任公司超高压输电公司天生桥局 NMOS-based low-power-consumption redundant current-sharing circuit
CN111478570B (en) * 2020-05-08 2021-03-19 中国南方电网有限责任公司超高压输电公司天生桥局 PMOS-based low-power-consumption redundant current-sharing circuit
CN111580590B (en) * 2020-05-08 2021-04-09 中国南方电网有限责任公司超高压输电公司天生桥局 NMOS-based low-power-consumption redundant current-sharing circuit

Also Published As

Publication number Publication date
CN109873489B (en) 2021-11-05

Similar Documents

Publication Publication Date Title
CN109873489A (en) A kind of power-supply management system of instrument of surveying and mapping
CN204012789U (en) Vehicle-mounted monitoring platform power administration module
CN205945193U (en) Electric system of wireless data transmission device
CN102931702B (en) Battery unit parallel system, device and battery unit parallel method
CN106410946B (en) Power supply circuit for distribution line fault positioning device and power supply method thereof
CN102664454B (en) Non-floating charging type substation direct current power supply system based on iron lithium battery
CN203377624U (en) Communication lithium iron phosphate battery remote communication alarm device
CN105576776B (en) DC power system is used in lithium-ions battery electric power and communication
CN106712174B (en) Automatic switching method for power supply and communication of lithium ion storage battery pack
CN105337328B (en) Charging circuit and system for rechargeable battery
CN203747501U (en) Mine intrinsically-safe direct current uninterruptible power source
CN106059046A (en) Combined emergency guarantee power source and power supply method thereof
CN102074994B (en) Charging device of direct-current (DC) system
CN206850517U (en) The double-input uninterrupted voltage-stabilizing switch power source of paralleling switch type
CN203456930U (en) Compound energy system
CN205407350U (en) Lithium ion battery electric power and for communication DC power supply system
CN211239354U (en) Main loop control circuit of energy storage equipment
CN207398829U (en) A kind of intelligent power system based on DSP
CN202550664U (en) Direct current power supply system of non-floating charge type transformer substation based on lithium iron battery
CN206461398U (en) A kind of special type three-state switch in battery anode end
CN209134120U (en) Integrated capacitor charging module
CN209593046U (en) A kind of power supply circuit and weather station based on rechargeable battery
CN203377628U (en) Communication lithium iron phosphate battery remote control device
CN203377627U (en) Communication large capacity lithium iron phosphate battery intelligent management device
CN207964933U (en) Electric transmission line hot-line indicates system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20221208

Address after: 7th Floor, Zhongguancun Intellectual Property Building, 21 Haidian South Road, Haidian District, Beijing 100089

Patentee after: Beijing Intellectual Property Management Co.,Ltd.

Address before: 100094 512, Internet Innovation Center, building 5, yard 10, northwest Wangdong Road, Haidian District, Beijing

Patentee before: HUATONG XIN'AN (BEIJING) TECHNOLOGY DEVELOPMENT CO.,LTD.