CN110182103A - A kind of Novel power system - Google Patents

A kind of Novel power system Download PDF

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Publication number
CN110182103A
CN110182103A CN201910560982.2A CN201910560982A CN110182103A CN 110182103 A CN110182103 A CN 110182103A CN 201910560982 A CN201910560982 A CN 201910560982A CN 110182103 A CN110182103 A CN 110182103A
Authority
CN
China
Prior art keywords
battery
power supply
module
input
current
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.)
Pending
Application number
CN201910560982.2A
Other languages
Chinese (zh)
Inventor
龚吉
王勇
曹峰
张旭升
王克洪
徐纪明
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.)
SHANGHAI HAIDE CONTROL SYSTEM CO Ltd
Original Assignee
SHANGHAI HAIDE CONTROL SYSTEM 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 SHANGHAI HAIDE CONTROL SYSTEM CO Ltd filed Critical SHANGHAI HAIDE CONTROL SYSTEM CO Ltd
Priority to CN201910560982.2A priority Critical patent/CN110182103A/en
Publication of CN110182103A publication Critical patent/CN110182103A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/22Balancing the charge of battery modules
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00Converter types
    • B60L2210/10DC to DC converters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00Converter types
    • B60L2210/40DC to AC converters
    • 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
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/14Plug-in electric vehicles

Abstract

The embodiment of the invention discloses a kind of Novel power systems.The Novel power system includes: the first power supply module, including at least two battery modules, each battery module includes cathode output end and cathode output end, battery and the battery management module for being connected with host computer, battery is connected between cathode output end and cathode output end, and battery management module is used to detect the running parameter of battery;Current transformer mould group, including at least two groups cell input terminal and two bus connecting pins, current transformer is in series between bus connecting pin and every group of cell input terminal, while current transformer is balanced correction according to one of the control signal of host computer at least two battery modules of control, the other battery modules for controlling at least two battery modules power to bus connecting pin.The embodiment of the present invention is balanced correction while realizing storage battery power supply.

Description

A kind of Novel power system
Technical field
The present embodiments relate to engineering machinery technology more particularly to a kind of Novel power systems
Background technique
Crane refers to more movement hoisting machineries of vertical-lift in a certain range and horizontal carrying heavy goods.
The dynamical system of existing crane has diesel engine power supply, diesel engine and alternating current switching power supply and battery and diesel engine Common power supply etc., the battery used is lithium battery.
But lithium battery is frequently large current discharge, in the use process of large current charge in Crane Industry, battery intelligent Management system is very easy to the estimation of battery capacity to generate big error, and battery core is easy output Voltage unbalance in battery pack, Battery life will seriously be reduced by continuing to use, or even battery accident occurs, and specially be shut down using needs when the power supply of battery group Electricity correction and the battery core balance of voltage are done to battery.
Summary of the invention
The embodiment of the present invention provides a kind of Novel power system, is balanced school while the power supply of battery group to realize Just.
For this purpose, the embodiment of the invention provides a kind of Novel power systems, comprising:
First power supply module, including at least two battery modules, each battery module include that cathode output end and cathode are defeated Outlet, battery and the battery management module for being connected with host computer, the battery are connected on the cathode output end and bear Between the output end of pole, the battery management module is used to detect the working condition of battery;Current transformer mould group, including at least two groups Cell input terminal and two bus connecting pins, every group of cell input terminal include electrode input end and negative input, the anode Input terminal connects the cathode output end of the battery module, and the negative input connects the cathode output of the battery module End, is in series with current transformer between the bus connecting pin and every group of cell input terminal, the current transformer is according to the control of host computer While one of described at least two battery module of signal control is balanced correction based on the running parameter, control at least two Other battery modules of a battery module power to the bus connecting pin.
Further, which further includes load motor module, and the load motor module includes two straight Feeder ear, frequency converter and motor are flowed, described two bus connecting pins are correspondingly connected to two DC power supply terminals by bus, described The DC voltage that two DC power supply terminals provide is converted to alternating current to drive the motor by frequency converter, or by the motor The alternating current energy of feedback is converted to direct current and is provided to described two DC power supply terminals.
Further, which further includes the second power supply module and third power supply module, the second power supply module Including three-phase input power supply, third power supply module includes direct-current input power supplying, the three-phase input power supply and the current transformer mould The ac input end of group is connected for powering to described two bus connecting pins, the direct-current input power supplying and the current transformer mould The direct-flow input end of group is connected for powering to described two bus connecting pins, the anode of the direct-current input power supplying and the mother Diode is in series between line.
Further, the current transformer mould group further includes the first rectifier, and first rectifier includes three input ports With two delivery outlets, three input ports are connected to the ac input end of the current transformer mould group, and described two delivery outlets are logical It crosses bus and is connected to described two bus connecting pins.
Preferably, second power supply module further includes setting between three-phase input power supply and three-phase input power output end The first preset exposure device having, the third power supply module further include exporting in the direct-current input power supplying and direct-current input power supplying The second preset exposure device being equipped between end.
Preferably, the current transformer mould group further includes connecting between a delivery outlet of the bus with first rectifier Hall direct current detection device, the Hall direct current detection device is connected with the host computer.
Preferably, the current transformer mould group further comprises low pressure surge protector, the low pressure surge protector three Input terminal connects three input ports of first rectifier, the low pressure surge protector output end ground connection.
Further, which further includes supplementary module, and the supplementary module includes auxiliary transformer and auxiliary Output interface is helped, the auxiliary transformer includes from concatenated second inverter of the bus.
Preferably, current transformer is encapsulated using silicon carbide switches pipe, and is controlled with 40K switching frequency.
The embodiment of the present invention is by battery management module for detecting the operating parameter information in battery and feeding back to Position machine, host computer transmission control signal control one of described at least two battery module to current transformer and are balanced the same of correction When, other battery modules of at least two battery modules are controlled to the load motor module for power supply.Having reached battery is Heavy-duty machine does not need to shut down the effect that can be carried out electricity correction and the battery core balance of voltage when powering.
Detailed description of the invention
Fig. 1 is the Novel power system circuit diagram in the embodiment of the present invention one;
Fig. 2 is the current transformer modular circuit figure of the Novel power system in the embodiment of the present invention two;
Fig. 3 is the Novel power system circuit diagram in the embodiment of the present invention three;
Fig. 4 is the current transformer modular circuit figure of the Novel power system in the embodiment of the present invention three;
Fig. 5 is the load motor module circuit diagram of the Novel power system in the embodiment of the present invention three.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
As shown in Figure 1, the embodiment of the present invention one provides a kind of Novel power system, including the first power supply module 100 and change Flow device mould group 200.
Wherein, the first power supply module 100 include at least two battery modules, each battery module include cathode output end and Cathode output end, battery and the battery management module for being connected with host computer, the battery are connected on the anode output Between end and cathode output end, the battery management module is used to detect the running parameter in battery;Current transformer mould group 200 is wrapped At least two groups cell input terminal and two bus connecting pin C1+ and D1- are included, every group of cell input terminal includes electrode input end and bear Pole input terminal, the electrode input end connect the cathode output end of the battery module, and the negative input connects the electricity The cathode output end of pond module is in series with change by bus between the bus connecting pin C1+ and D1- and every group of cell input terminal Device is flowed, the current transformer controls one of described at least two battery module according to the control signal of host computer and is balanced correction Meanwhile the other battery modules for controlling at least two battery modules power to the DC power supply terminal.
In the present embodiment, the first power supply module 100 includes three battery modules, respectively battery module B1, battery module B2 and battery module B3.Battery module B1 includes cathode output end B1+ and cathode output end B1-, battery B11 and is connected with The battery management module BMS1 of host computer.The battery B11 is connected on the cathode output end B1+ and cathode output end B1- Between.The battery B11 includes switch, power supply and DC fuse.Battery module B2 includes cathode output end B2+ and cathode Output end B2-, battery B21 and the battery management module BMS2, the battery B21 for being connected with host computer are connected on described Between cathode output end B2+ and cathode output end B2-, the battery B21 includes switch, power supply and DC fuse.Battery Module B3 includes cathode output end B3+ and cathode output end B3-, battery B31 and the battery management mould for being connected with host computer Block BMS3, the battery B31 are connected between the cathode output end B3+ and cathode output end B3-, the battery B31 Including switch, power supply and DC fuse.It, can be by opening when the battery damage of any battery module or when not being available Pass disconnects battery, and the first power supply module 100 can continue to work normally.
Preferably, the running parameter of battery includes the ginseng such as the electric current, electricity of battery core in battery, temperature and state of insulation Number.
Illustratively, current transformer mould group 200 includes three groups of cell input terminals, and every group of cell input terminal includes electrode input end And negative input, the cathode output end B1+, negative input A1- of the present embodiment electrode input end A1+ connection battery module B1 Connect the cathode output end B1- of battery module B1.The cathode output end B2+ of electrode input end A2+ connection battery module B2, cathode The cathode output end B2- of input terminal A2- connection battery module B2.The anode output of electrode input end A3+ connection battery module B3 Hold B3+, the cathode output end B3- of negative input A3- connection battery module B3.Bus connecting pin C1+ and D1- and battery input Current transformer DC/DC1 is in series between the A1+ and A1- of end;It is gone here and there between bus connecting pin C1+ and D1- and cell input terminal A2+ and A2- It is associated with current transformer DC/DC2;Current transformer DC/ is in series between bus connecting pin C1+ and D1- and cell input terminal A3+ and A3- DC3。
Illustratively, current transformer is regulated and controled automatically according to the voltage of bus, carries out the balance of discharge current, and host computer is logical Cross in converter module 200 microprocessor MPU limitation regulation of the total microprocessor MPU to each current transformer highest or Minimum voltage, microprocessor MPU are connected with each triode in current transformer.
When battery management module BMS1, BMS2 and BMS3 of three groups of battery modules receive the complete electric power storage of command detection of host computer In pond after the electricity, electric current of battery core, temperature and state of insulation, host computer is transmitted information to, host computer is to converter module 200 In total microprocessor MPU send the instruction of balance correction, current transformer DC/DC1 receives the finger of microprocessor MPU balance correction It enables, current transformer DC/DC1 starts automatically to be adjusted its discharge voltage, to be balanced correction to battery B11, simultaneously Current transformer DC/DC2 and DC/DC3 make battery B21 and battery B31 carry out regular picture.When battery B11 balance correction knot After beam, battery B21 is balanced correction, while battery B11 and battery B31 carries out regular picture, as battery B21 After balance correction terminates, battery B31 is balanced correction, while battery B11 and battery B21 carries out regular picture. The embodiment of the present invention is detected the information such as electricity and the battery core voltage of battery by battery management module and feeds back to host computer, on While position machine sends a signal to current transformer and controls one of described three battery modules and be balanced correction, other two battery moulds Block does not need to shut down the electricity correction that can be carried out battery when having reached storage battery power supply and battery core voltage is flat to regular picture The effect of weighing apparatus, therefore, battery is because correction can be balanced always, and service life and utilization rate improve, battery Applicable category also accordingly expands.
Embodiment two
As shown in Fig. 2, the embodiment of the present invention second is that on the basis of current transformer mould group in example 1 to the present invention into The improvement of one step.
In the present embodiment, current transformer mould group 200 further includes the first rectifier AC/DC, the first rectifier AC/DC packet Include three input ports and two delivery outlets, three input ports be connected to the current transformer mould group 200 ac input end R1, S1, T1, described two delivery outlets are connected to described two bus connecting pin C1+ and D1- by bus, and described two delivery outlets are logical Diode G1 rectification is crossed to be connected with direct-flow input end C1, D1.
Illustratively, the current transformer mould group 200 further includes one in bus with the first rectifier AC/DC The preliminary filling electrical circuit A0 being sequentially connected in series between delivery outlet.
Preferably, the current transformer mould group 200 further includes the second inverter DC/AC being sequentially connected in series from the bus With sine wave filter LC, sine wave filter LC is connected with auxiliary output terminal U1, V1, W1 interface of current transformer mould group 200.
Preferably, also connecting respectively on current transformer DC/DC1, DC/DC2 and DC/DC3 and anode A1+, A2+ and A3+ There are direct current reactor L1, L2, L3 and preliminary filling electrical circuit A1, A2, A3, direct current reactor is used for the friendship that will be superimposed upon on DC current Flow component is limited to a certain specified value, keeps rectified current continuous, reduces pulsation of current value, improves input power factor, and can With the harmonic wave for inhibiting converter plant to generate, preliminary filling electrical circuit is used to limit power supply and connects moment to the work of charging current of condenser With to protect the element of rectifier AC/DC not damage because of the short circuit current of capacitor moment.
Preferably, the current transformer DC/DC is encapsulated using silicon carbide switches pipe, and with 40kHz switching frequency control System, i.e. the pulse width modulation control chip drives pulsed operation frequency of power supply are 40kHz, and setting switching loss in this way is small, right Cabling requirement is low, does switching tube encapsulation using good semiconductor material silicon carbide, and high temperature can be anti-oxidant, and current fluctuation is small, Weight and volume needed for direct current reactor reduces, therefore direct current reactor can be set in converter module.
Current transformer mould group 200 in the present embodiment includes the first rectifier AC/DC, the second inverter DC/AC and three changes Device DC/DC1, DC/DC2 and DC/DC3 and other necessary components are flowed, are balanced school while realizing the power supply of battery group Just, direct current and AC power source input port are additionally provided, ensure that the stability of power supply, in addition, current transformer DC/DC uses silicon carbide Switching tube encapsulation, 40kHz switching frequency control, and weight and volume needed for direct current reactor reduces, and realize direct current reactor It is built-in.
Embodiment three
As shown in Fig. 3, Fig. 4 and Fig. 5, the embodiment of the present invention is third is that further to the present invention on the basis of example 1 It improves, Fig. 3 is a kind of Novel power system provided in an embodiment of the present invention, and Fig. 4 is a kind of Novel power system that Fig. 3 is provided Current transformer physical circuit figure, Fig. 5 are a kind of load motor module circuit diagram for Novel power system that Fig. 3 is provided.
In the present embodiment, Novel power system further includes load motor module 300, including two DC power supply terminal C+ and D-, frequency converter INV and motor M, described two bus connecting pin C1+ and D1- are correspondingly connected to two direct current supplys by bus Hold C+ and D-, the frequency converter INV that two DC power supply terminals C+ and the D- DC voltage provided are converted to alternating current to drive The motor M, or the alternating current energy of the feedback of the motor M is converted into direct current and is provided to described two DC power supply terminals C+ and D-.
Illustratively, the motor that the motor M can use for multiple fields such as crane and automobiles, the present embodiment use Bridge motor M.
Preferably, microprocessor MPU is connected with each triode in inverter DC/AC, load motor module it is another Host computer controls frequency converter INV by microprocessor MPU, adjusts the flow direction and frequency of electric current, and the frequency converter INV is straight by two The DC voltage that stream feeder ear C+ and D- are provided is converted to alternating current to drive the bridge motor M and control its revolving speed, or will The alternating current energy of the feedback of the bridge motor M is converted to direct current and is provided to described two DC power supply terminal C+ and D-.Its In, three-phase access port U1, V1 and W1 of the inverter DC/AC and bridge motor M of frequency converter INV connect.
Illustratively, when crane slings weight, by battery B11, battery B21 and battery B31 jointly to rise Weight motor M provide energy, and three current transformers adjust discharge current in real time, keep three groups of battery module discharge loads essentially identical;So Connect two the DC power supply terminals C+ and D- of frequency converter INV, frequency converter with D1- by two bus connecting pin C1+ by bus afterwards The voltage and frequency of inverter DC/AC adjust automatically out-put supply in INV, provide according to the actual needs of bridge motor M The DC voltage that two DC power supply terminals provide is converted to alternating current to drive the lifting electricity by its required supply voltage Machine M.
Further, Novel power system further includes the second power supply module 400, and the second power supply module 400 includes that three-phase is defeated Entering power supply, the three-phase input power output end R interface is connected with the ac input end R1 interface of the current transformer mould group 200, The three-phase input power output end S interface is connected with the ac input end S1 interface of the current transformer mould group 200, the three-phase Input power output end T interface is connected with the ac input end T1 interface of the current transformer mould group 200, for described two mothers Line connecting pin C1+ and D1- power supply, second power supply module further include three-phase input power supply and three-phase input power output end R, S, the first preset exposure device-KM1 being equipped between T interface, for being pre-charged and low-voltage release guard.
Preferably, the current transformer mould group 200 further comprises PE1 interface, connect with the PE of the second power supply module 400 Mouth is connected, and PE interfacing ground shields when leaking electricity for current transformer shell.
Further, Novel power system further includes third power supply module 500, and third power supply module 500 includes that direct current is defeated Enter power supply, the direct-current input power supplying output end D0 and CO to be connected with the direct-flow input end D1 of the current transformer mould group 200 with C1 For powering to described two bus connecting pin C1+ and D1-, the positive P+ of direct-current input power supplying and the C0 interface of direct-flow input end It is connected, the C0 interface of direct-flow input end is connected with the C1 interface of current transformer mould group 200, the cathode N- and direct current of direct-current input power supplying The D0 interface of input terminal is connected, and the D0 interface of direct-flow input end is connected with the D1 interface of current transformer mould group 200.The direct current input The diode G1 for rectification is in series with by bus connection between the positive P+ and DC power supply terminal D- of power supply, the third supplies Electric module 500 further includes the second preset exposure being equipped between direct-current input power supplying and direct-current input power supplying output end D0 and CO Device-KM2, for being pre-charged and low-voltage release guard.
Further, Novel power system further includes supplementary module 600.The supplementary module 600 includes auxiliary transformer With auxiliary output interface, auxiliary output interface include from the corresponding air-conditioning interface L1, L2 picked out of secondary the end of a thread of auxiliary transformer, Lighting system interface L3 and zero curve N, supplementary module input terminal U, V, W are corresponding with primary the end of a thread of auxiliary transformer to be connected, auxiliary The u interface of module input is connected with the U1 interface of current transformer mould group 200;The V interface and current transformer mould of supplementary module input terminal The V1 interface of group 200 is connected;The W interface of supplementary module input terminal is connected with the W1 interface of current transformer mould group 200.
Further, the current transformer mould group 200 further includes the first rectifier AC/DC, the first rectifier AC/DC packet Include three input ports and two delivery outlets, three input ports be connected to the current transformer mould group 200 ac input end R1, S1, T1, described two delivery outlets are connected to described two bus connecting pin C1+ and D1- by bus.
Preferably, the current transformer mould group 200 further comprises low pressure surge protector F0, the low pressure surge is protected Three input terminals of shield device F0 connect three input ports of first rectifier, the output end of the low pressure surge protector F0 Ground connection.
Preferably, the current transformer mould group 200 further includes one in bus with the first rectifier AC/DC Preliminary filling electrical circuit A0, Hall direct current detection device T1 and the first predetermined DC fuse being sequentially connected in series between a delivery outlet F1。
Further, Novel power system further includes supplementary module, and the supplementary module includes auxiliary transformer and auxiliary Output interface, the auxiliary transformer include from the concatenated second inverter DC/AC of the bus.
Preferably, the current transformer mould group 200 includes the second predetermined DC fusing being sequentially connected in series from the bus The output of the auxiliary of device F2, the second inverter DC/AC and sine wave filter LC, sine wave filter LC and current transformer mould group 200 U1, V1, W1 interface is held to be connected.
Preferably, the current transformer DC/DC is encapsulated using silicon carbide switches pipe, and with 40kHz switching frequency control System, i.e. the pulse width modulation control chip drives pulsed operation frequency of power supply are 40kHz, and setting switching loss in this way is small, right Cabling requirement is low, does switching tube encapsulation using good semiconductor material silicon carbide, and high temperature can be anti-oxidant, and current fluctuation is small, Therefore direct current reactor can be set in converter module.
Preferably, current transformer DC/DC1, DC/DC2, DC/DC3 and the second inverter DC/AC are connected with micro process Device MPU, these microprocessor MPUs and Hall direct current detection device T1 be connected in converter module 200 one it is total Microprocessor MPU and receive converter module 200 total microprocessor MPU control, frequency converter INV is also connected with microprocessor MPU is connected and receives the control of the host computer between the microprocessor MPU and another host computer of load motor module 300.
It optionally, i.e., can be on bus as shown in figure 5, load motor module 300 may include multiple load motors Cargo motor M2 and vehicle motor M3 in parallel, cargo motor M2 are in series with frequency converter INV2, and vehicle motor M3 is in series with frequency converter Three-phase access port U2, V2 and W2 of the inverter DC/AC2 and cargo motor M2 of INV3, frequency converter INV2 connect, frequency converter Three-phase access port U3, V3 and W3 of the inverter DC/AC3 and vehicle motor M3 of INV3 connect, cargo motor M2 and vehicle motor M3 be powered mode and the regulative mode of frequency converter is identical as the bridge motor M in above-described embodiment.
Illustratively, when crane slings weight, power supply and battery B1, battery B2 and battery are accessed by outside B3 provides energy to crane jointly.Wherein, external access power supply can be small diesel engine unit access three-phase input power supply The power supply of offer;The either power supply of alternating current wiping AC power source access three-phase input power supply offer;Either alternating current wiping is straight Flow the power supply that plant-grid connection direct-current input power supplying provides.Microprocessor MPU adjusts electric discharge electricity according to the variation of busbar voltage in real time Stream, keeps three groups of battery module discharge loads essentially identical, while ensuring the nonoverload of external access power supply;Then passed through by bus Two bus connecting pin C1+ connect two the DC power supply terminals C+ and D- of frequency converter INV, frequency converter INV adjustment output electricity with D1- The voltage and frequency in source, power required for providing it according to the actual needs of bridge motor M, by two direct current supplys The DC voltage that end C+ and D- is provided is converted to alternating current to drive the bridge motor M.
When the standby waiting of crane, small diesel-driven generator is continued to run, and the electric energy provided at this time can be to three groups of battery moulds Battery B1, B2 and B3 of block charge, and three current transformers adjust the charging current in real time automatically, keep three groups of battery module chargings negative It carries essentially identical.
Illustratively, when crane slings weight, Hall direct current detection device T1 detects 400 He of the second power supply module The discharge current of the output load current of third power supply module 500, three batteries B11, B21 and B31, which is transmitted to Host computer, three current transformers adjust the discharge current of the first power supply module 100 in real time automatically and limit 400 He of the second power supply module The input power of 500 power supply of third power supply module, keeps the discharge load of three batteries B11, B21 and B31 essentially identical, simultaneously Ensure the nonoverload of external access power supply.
Preferably, current transformer DC/DC1, DC/DC2 and DC/DC3 and electric power storage in each battery module B1, B2 and B3 It is also in series with direct current reactor L1, L2, L3 and precharge respectively on positive B1+, B2+ and B3+ between pond B11, B21 and B31 Circuit A1, A2, A3, direct current reactor are used to the AC compounent being superimposed upon on DC current being limited to a certain specified value, keep Rectified current is continuous, reduces pulsation of current value, the harmonic wave for improving input power factor, and converter plant being inhibited to generate;Often It is also in series with respectively on current transformer anode between a battery module median generatrix and current transformer DC/DC1, DC/DC2 and DC/DC3 straight Flow fuse F3, F4 and F5.
Illustratively, preliminary filling electrical circuit is used to limit power supply and connects effect of the moment to charging current of condenser, with protection The element of rectifier AC/DC will not be damaged because of the short circuit current of capacitor moment, and DC fuse is protected when excessive for electric current Protection circuit.
Illustratively, the first power supply module 100, the second power supply module 400 and third power supply module 500 provide electric energy and The electric energy that load motor module 300 is fed back can provide electric energy for supplementary module 600, when normal work, pass through the first power supply The electric energy that module 100, the second power supply module 400 and third power supply module 500 provide is powered to supplementary module 600, load motor When 300 feedback power of module, electric current is controlled by the microprocessor MPU of another host computer of connection load motor module 300 Reversely, inverter DC/AC and current transformer automatic adjustment make the first power supply module 100, the second power supply module 400 and third power supply mould The balance of voltage for the electric energy that the voltage and load motor module 300 for the electric energy that block 500 provides are fed back, makes it jointly to supplementary module 600 provide electric energy.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation, It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.

Claims (9)

1. a kind of Novel power system characterized by comprising
First power supply module, including at least two battery modules, each battery module include cathode output end and cathode output end, Battery and the battery management module for being connected with host computer, the battery are connected on the cathode output end and cathode output Between end, the battery management module is used to detect the running parameter of battery;
Current transformer mould group, including at least two groups cell input terminal and two bus connecting pins, every group of cell input terminal include anode Input terminal and negative input, the electrode input end connect the cathode output end of the battery module, the negative input The cathode output end of the battery module is connected, is in series with current transformer between the bus connecting pin and every group of cell input terminal, The current transformer according to the control signal of host computer control one of described at least two battery module based on the running parameter into While row balance correction, other battery modules of at least two battery modules of control power to the bus connecting pin.
2. a kind of Novel power system according to claim 1, which is characterized in that it further include load motor module, it is described Load motor module includes two DC power supply terminals, frequency converter and motor, and described two bus connecting pins connect by the way that bus is corresponding Described two DC power supply terminals are connected to, the DC voltage that described two DC power supply terminals provide is converted to exchange by the frequency converter Electricity is to drive the motor, or the alternating current energy of the feedback of the motor is converted to direct current and is provided to described two direct currents Feeder ear.
3. a kind of Novel power system according to claim 1, which is characterized in that further include the second power supply module and third Power supply module, the second power supply module include three-phase input power supply, and third power supply module includes direct-current input power supplying, and the three-phase is defeated Enter power supply to be connected with the ac input end of the current transformer mould group for powering to described two bus connecting pins, the direct current is defeated Enter power supply to be connected with the direct-flow input end of the current transformer mould group for powering to described two bus connecting pins, the direct current is defeated Enter and is in series with diode between the positive and described bus of power supply.
4. a kind of Novel power system according to claim 3, which is characterized in that the current transformer mould group further includes first Rectifier, first rectifier include three input ports and two delivery outlets, and three input ports are connected to the unsteady flow The ac input end of device mould group, described two delivery outlets are connected to described two bus connecting pins by bus.
5. a kind of Novel power system according to claim 3, which is characterized in that second power supply module further include The first preset exposure device being equipped between three-phase input power supply and three-phase input power output end, the third power supply module also wrap Include the second preset exposure device being equipped between the direct-current input power supplying and direct-current input power supplying output end.
6. a kind of Novel power system according to claim 3, which is characterized in that the current transformer mould group further includes in mother Concatenated Hall direct current detection device between line and a delivery outlet of first rectifier, the Hall DC current Detection device is connected with the host computer.
7. a kind of Novel power system according to claim 3, which is characterized in that the current transformer mould group further comprises Low pressure surge protector, three input terminals of the low pressure surge protector connect three input ports of first rectifier, institute State low pressure surge protector output end ground connection.
8. a kind of Novel power system according to claim 1, which is characterized in that it further comprise supplementary module, it is described Supplementary module includes auxiliary transformer and auxiliary output interface, and the auxiliary transformer includes inverse from the bus concatenated second Become device.
9. a kind of Novel power system according to claim 1, which is characterized in that the current transformer uses silicon carbide switches Pipe encapsulation, and controlled with 40kHz switching frequency.
CN201910560982.2A 2019-06-26 2019-06-26 A kind of Novel power system Pending CN110182103A (en)

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JP2010045923A (en) * 2008-08-13 2010-02-25 Mitsubishi Heavy Ind Ltd Energy storage system
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