CN107986196A - A kind of electri forklift potential energy regenerating unit - Google Patents
A kind of electri forklift potential energy regenerating unit Download PDFInfo
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- CN107986196A CN107986196A CN201710996692.3A CN201710996692A CN107986196A CN 107986196 A CN107986196 A CN 107986196A CN 201710996692 A CN201710996692 A CN 201710996692A CN 107986196 A CN107986196 A CN 107986196A
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- 238000005381 potential energy Methods 0.000 title claims abstract description 26
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000004065 semiconductor Substances 0.000 claims description 41
- 238000001514 detection method Methods 0.000 claims description 32
- 239000003990 capacitor Substances 0.000 claims description 31
- 230000005611 electricity Effects 0.000 claims description 11
- 238000010248 power generation Methods 0.000 claims description 4
- 238000009355 double cropping Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 206010037660 Pyrexia Diseases 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 19
- 238000004064 recycling Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- 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
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
Abstract
The invention discloses a kind of electri forklift potential energy regenerating unit, including motor load system, Buck conversion circuit, main control module, constant-current control module and power module；The constant-current control module and power module are electrically connected, and the motor load system, Buck conversion circuit, power module and main control module are electrically connected, and are controlled by it；The present invention proposes that load, which is greatly reduced, falls fever after rise, and realizes a kind of electri forklift potential energy regenerating unit that energy regeneration utilizes.
Description
Technical field
The present invention relates to electric automobiles, more particularly to a kind of electric fork Vehicular energy-saving based on storage battery and super capacitor
Device.
Background technology
In recent years, China Logistics industry scale grows continuously and fast, 2015, and national social logistics total value is up to 219.2 trillion
Member, increased by 3.68 times than 2006, increased by 15.58% every year, the proportion that social logistics total cost accounts for national GDP is 16%.Wherein
Fork truck be logistics core carry equipment, Chinese Forklift Industry continuous more than ten year with average annual 30% speed grow at top speed, into
For global maximum fork truck production base.But global warming and energy problem become increasingly conspicuous, high fuel price etc.
Forklift Industry is all promoted to solve the problems, such as that current oil consumption is big.Further, since hoisting system uses hydraulic-driven, the potential energy of loss
Major part switch to hydraulic system restriction loss, not only cause energy waste, reduce fork truck can stream time, also result in liquid
Pressure oil is generated heat, and damages part life, reduces system effectiveness.Therefore gravitional force has important meaning when recycling fork truck cargo declines
Justice.
In addition, fork truck, due to its operating characteristic, hoisting system needs frequently to move back and forth, and the moment of cargo lifting, lift
Rise the electric current output for needing energy source larger when accelerating.In electri forklift, there is compared with favourable opposition storage battery in transient high-current output
Hit, the major injury life of storage battery, therefore, it is necessary to when Proper Match cargo lifting moment, lifting accelerate in management scheme
Energy output, increasing storage battery service life.
Problem is recycled for electri forklift potential energy, the prior art is as follows：
By taking Chinese patent 200610042603.3 as an example, by controlling the operating mode of motor to regulate and control the work of forklift lifting system
State simultaneously carries out energy regenerating, it is necessary to realize that the high accuracy between control system and motor is matched and responded, control system principle
Complexity is, it can be achieved that property is more demanding.
It is real by three kinds of different fork of forklift truck decrease speed regulative modes by taking Chinese patent 201620398878.X as an example
Now part potential energy recycles, there are potential energy can be recycled during variable speed volumetric speed control, so potential energy during throttle grverning cannot have
Effect recycling, potential energy organic efficiency be not high.
By taking Chinese patent 201510772125.0 as an example, recycled by accessing accumulator and recovery oil circuit in hydraulic system
Forklift lifting potential energy of system, therefore integrated hydraulic system oil-way model in forklift lifting system need to be significantly changed, to forklift lifting
System change is larger, and complicated, replaceability is small.
By taking Chinese patent 201620398878.X as an example, by using newly-designed commutation during declining in hoisting system
Oil pump reversion drives the mode recovery section potential energy of motor reversal power generation when valve realizes decline using storage battery for motor power supply, should
Method implementation condition is harsh, the special reversal valve of inventor/enterprise need to be bought, without versatility.
The content of the invention
For above-mentioned technical problem, the present invention proposes a kind of electri forklift potential energy regenerating unit.
In order to solve above-mentioned technological deficiency, technical scheme is as follows：
A kind of electri forklift potential energy regenerating unit, including motor load system, Buck conversion circuit, main control module, perseverance
Flow control module and power module；The constant-current control module and power module are electrically connected, the motor load system, decompression
Formula translation circuit, power module and main control module are electrically connected, and are controlled by it；
The motor load system includes double acting motor generator, double acting oil pump-hydraulic motor, oil cylinder, the 3rd relay
Device and auxiliary device, the double acting motor generator are connected with double acting oil pump-hydraulic motor, the 3rd relay, double cropping
It is connected with oil pump-hydraulic motor with oil cylinder, auxiliary device；
The Buck conversion circuit includes inductance, the second diode and the second metal-oxide-semiconductor, drain electrode and the electricity of second metal-oxide-semiconductor
Machine load system connects, and the source electrode of the second metal-oxide-semiconductor is connected with inductance, the second diode, grid and the master control molding of the second metal-oxide-semiconductor
Block connects；
The main control module includes controller, the first relay, the second relay, first voltage detection module, second voltage
Detection module；First relay, the second relay, first voltage detection module, second voltage detection module and controller
It is electrically connected, and is controlled by it；The controller receives master switch signal, lifting signal, dropping signal；
The power module includes storage battery, the first diode, the first metal-oxide-semiconductor, super capacitor；The grid of first metal-oxide-semiconductor
It is connected with constant-current control module, the source electrode of the first metal-oxide-semiconductor is connected with the first diode, the drain electrode of the first metal-oxide-semiconductor and storage battery
Cathode connects, and the anode of storage battery is connected with the other end of the first diode, the connection of super capacitor motor load system.
Further, one end of first relay is connected with the source electrode of the second metal-oxide-semiconductor, and the other end and storage battery are just
Pole connects, and one end of second relay is connected with the drain electrode of motor load system, the second metal-oxide-semiconductor, the other end and super electricity
Hold connection.
Further, first voltage detection module is connected between one end of first relay and storage battery, described the
Second voltage detection module is connected between two relays and super capacitor.
Further, the controller of the main control module passes through first voltage detection module, second voltage detection module
Feedback voltage signal and forklift lifting signal, dropping signal, master switch signal, come control the first control relay, second after
The break-make of second metal-oxide-semiconductor of electric appliance and reduction voltage circuit.
Further, the constant-current control module, disconnect in the first relay, the second relay closure when, the can be controlled
The break-make of one metal-oxide-semiconductor, and cause charging of the storage battery to super capacitor, and control charging current.
Further, the 3rd relay is controlled by the controller.
Further, the motor load system is when controller receives lifting signal, the 3rd relay closure, double acting
Motor generator drives double acting oil pump-hydraulic motor to rotate forward as motor, realizes load lifting；Received in controller
During dropping signal, the 3rd relay closure, load, which declines, drives double acting oil pump-hydraulic motor reversion to become hydraulic motor, band
Dynamic double acting motor generator reversion power generation.
The present invention is due to using above technical scheme, haing the following advantages：
1. the potential energy that traditional electri forklift load is fallen after rise dissipates waste in the form of thermal energy, not only increase the fortune of oil circuit vital part
Turn load, and greatly strengthen fork truck radiator radiating requirements, reduce service life of equipment.The recyclable major part of the present apparatus
Load potential energy is simultaneously used, and load is greatly reduced and falls fever after rise, and realizes that energy regeneration utilizes, suitable for the overwhelming majority
High-end forklift truck products, wide market, energy-saving benefit are notable.
2. by detecting dual energy source voltage signal and receiving lifting, dropping signal, the break-make of relay is controlled, so that complete
Energy source control when working into fork truck, operating method is easy, and control program is simple, is not required to excessive hardware device, most of electricity
Road designing technique is ripe, therefore circuit is workable, is easily manufactured to over all Integration module, and volumetric spaces are small, on fork truck just
In placement；And control program not high to the response speed of hardware, overload voltage, current requirements, circuit cost is low, has preferable
Economic value.
3. storage battery-super capacitor energy-storage scheme is used, first storage device of the super capacitor as recycling potential energy,
In the case that its electricity is full of, second energy storage device of the storage battery as recycling potential energy.Super capacitor power density is high, is adapted to big
Current discharge, storage battery energy density is high, is adapted to discharge for a long time.Therefore, the energy of comprehensive matching super capacitor and storage battery
Maximizing capacity usage ratio is exported, improves fork truck work efficiency.In addition, started using super capacitor as forklift lifting, lifted
Energy source when accelerating is risen, avoids the transient high-current output of storage battery, can increasing storage battery service life.
Brief description of the drawings
Fig. 1 is the integrated circuit block diagram of the present invention；
The motor load system schematic of Fig. 2 positions present invention.
Identified in figure：Storage battery 1, first voltage detection module 2, constant-current control module 3, the first relay 4, the first MOS
Pipe 5, the first diode 6, inductance 7, the second diode 8, the second metal-oxide-semiconductor 9, second voltage detection module 10, super capacitor 11,
Two relays 12, motor load system 13, controller 14, double acting motor generator B1, double acting oil pump-hydraulic motor
B2, oil cylinder B3, the 3rd relay B4.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
As shown in Figure 1, a kind of electri forklift potential energy regenerating unit, including motor load system 13, buck converter electricity
Road, main control module, constant-current control module 3 and power module.The constant-current control module 3 and power module are electrically connected, institute
State motor load system 13, Buck conversion circuit, power module and main control module to be electrically connected, and be controlled by it.
The motor load system 13 includes double acting motor generator B1, double acting oil pump-hydraulic motor B2, oil
Cylinder B3, the 3rd relay B4 and auxiliary device.As shown in Fig. 2, the double acting motor generator B1 and double acting oil pump-
Hydraulic motor B2, the 3rd relay B4 connections, double acting oil pump-hydraulic motor B2 are connected with oil cylinder B3, auxiliary device.
The Buck conversion circuit includes inductance 7, the second diode 8 and the second metal-oxide-semiconductor 9, second metal-oxide-semiconductor 9
Drain electrode is connected with motor load system 13, and the source electrode of the second metal-oxide-semiconductor 9 is connected with inductance 7, the second diode 8, the second metal-oxide-semiconductor 9
Grid is connected with main control module.The 3rd relay B4 is controlled by main control module, i.e. the controller 14 of main control module
Control.The controller 14 receives master switch signal, lifting signal, dropping signal.Then the motor load system 13 is controlling
When device 14 receives lifting signal, the 3rd relay B4 closures, double acting motor generator B1 drives double acting as motor
Oil pump-hydraulic motor B2 is rotated forward, and realizes load lifting；When controller 14 receives dropping signal, the 3rd relay B4 closures, bear
Carrying to decline drives double acting oil pump-hydraulic motor B2 reversions to become hydraulic motor, drives double acting motor generator B1 reversions
Power generation.3rd relay B4 is controlled by controller 14, is turned in the case where lifting/dropping signal receives, and is being broken under standby signal
Open.
The main control module includes controller 14, the first relay 4, the second relay 12, first voltage detection module
2nd, second voltage detection module 10；First relay 4, the second relay 12, first voltage detection module 2, second voltage
Detection module 10 is electrically connected with controller 14, and is controlled by it；The controller 14 receive master switch signal, lifting signal,
Dropping signal.One end of first relay 4 is connected with the source electrode of the second metal-oxide-semiconductor 9, and the cathode of the other end and storage battery 1 connects
Connect, one end of second relay 12 is connected with the drain electrode of motor load system 13, the second metal-oxide-semiconductor 9, the other end and super electricity
Hold 11 connections.First voltage detection module 2, second relay are connected between one end of first relay 4 and storage battery 1
Second voltage detection module 10 is connected between device 12 and super capacitor 11.
The controller 14 of the main control module by first voltage detection module 2, second voltage detection module 10 it is anti-
Feedthrough voltage signal and forklift lifting signal, dropping signal, master switch signal, to control the first control relay, the second relay
12 with the break-make of the second metal-oxide-semiconductor 9 of reduction voltage circuit.
The power module includes storage battery 1, the first diode 6, the first metal-oxide-semiconductor 5, super capacitor 11；First MOS
The grid of pipe 5 is connected with constant-current control module 3, and the source electrode of the first metal-oxide-semiconductor 5 is connected with the first diode 6, the leakage of the first metal-oxide-semiconductor 5
Pole is connected with the cathode of storage battery 1, and the anode of storage battery 1 is connected with the other end of the first diode 6,11 motor of super capacitor is born
Loading system 13 connects.The constant-current control module 3, disconnect in the first relay 4, the second relay 12 closure when, the can be controlled
The break-make of one metal-oxide-semiconductor 5, and cause charging of the storage battery 1 to super capacitor 11, and control charging current.
In conclusion specifically receive lifting signal when controller 14, i.e. lifting startup or during signal for faster, according to the
The voltage signal that one voltage detection module 2, second voltage detection module 10 are fed back, and when 11 both end voltage of super capacitor is not less than
During 24V, signal is sent by controller 14, to control the first relay 4 to disconnect, the second relay 12 turns on, and makes super capacitor 11
In power supply state, power untill the voltage of super capacitor 11 is less than 20V.If 11 both end voltage of super capacitor is natively not
Sufficient 24V, then be still powered by storage battery 1.
When controller 14 is not received by lifting signal or dropping signal, the hoisting system of fork truck is in holding state,
Controller 14 controls the first relay 4, the second relay 12 all to disconnect.
It is anti-according to first voltage detection module 2, second voltage detection module 10 when controller 14 receives dropping signal
The voltage signal of feedback, and when 11 both end voltage of super capacitor is not more than 28V, signal is sent by controller 14, control first after
Electric appliance 4 disconnects, the second relay 12 turns on, and motor load system 13 is charged to super capacitor 11.If super capacitor 11
When both end voltage is natively more than 28V, the first relay 4 disconnects the control of controller 14, the second relay 12 is disconnected, and exported
Pwm signal gives the second metal-oxide-semiconductor 9, i.e. output pulse width modulation is closed come the conducting carried out to the second metal-oxide-semiconductor of semiconductor devices 9
Control, makes motor load system 13 charge to storage battery 1.And PWM is adjusted according to the feedback signal of first voltage detection module 2
The duty cycle of signal so that charging voltage stabilization realizes constant-voltage charge in 28.5V.
When the voltage that continuous 5 times detect under dropping signal super capacitor 11 is more than 28V, in the hoisting system of fork truck
During in holding state, the first relay 4 disconnects the control of controller 14, the second relay 12 turns on, and output pwm signal is to the
Two metal-oxide-semiconductors 9, are charged by super capacitor 11 to storage battery 1, and are tired out to death adjusting according to the feedback signal of first voltage detection module 2
The duty cycle of pwm signal, realizes constant-voltage charge, until 11 voltage of super capacitor no more than 24V or receive lifting signal or under
Signal drops.
When continuous 5 times lifting signal enabling or accelerate in the case of, when detecting that the voltage of super capacitor 11 is less than 24V,
When the hoisting system of fork truck is in holding state, the first relay 4 disconnects the control of controller 14, the second relay 12 turns on,
By storage battery 1 by constant-current charge module to super capacitor 1111 with the constant current charge of 5A.
Constant-current control module 3, when the first relay 4, the second relay 12 all close, by judging its internal sample electricity
The pressure drop situation of resistance, to judge charging current, so as to control the break-make of the first metal-oxide-semiconductor 5, completes storage battery 1 to super electricity
Hold 11 charging, and control charging current in 5A or so.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make some improvements and modifications, these improvements and modifications also should be regarded as
In the scope of the present invention.
Claims (7)
- A kind of 1. electri forklift potential energy regenerating unit, it is characterised in that including motor load system, Buck conversion circuit, Main control module, constant-current control module and power module；The constant-current control module and power module are electrically connected, the motor Load system, Buck conversion circuit, power module and main control module are electrically connected, and are controlled by it；The motor load system includes double acting motor generator, double acting oil pump-hydraulic motor, oil cylinder, the 3rd relay Device and auxiliary device, the double acting motor generator are connected with double acting oil pump-hydraulic motor, the 3rd relay, double cropping It is connected with oil pump-hydraulic motor with oil cylinder, auxiliary device；The Buck conversion circuit includes inductance, the second diode and the second metal-oxide-semiconductor, drain electrode and the electricity of second metal-oxide-semiconductor Machine load system connects, and the source electrode of the second metal-oxide-semiconductor is connected with inductance, the second diode, grid and the master control molding of the second metal-oxide-semiconductor Block connects；The main control module includes controller, the first relay, the second relay, first voltage detection module, second voltage Detection module；First relay, the second relay, first voltage detection module, second voltage detection module and controller It is electrically connected, and is controlled by it；The controller receives master switch signal, lifting signal, dropping signal；The power module includes storage battery, the first diode, the first metal-oxide-semiconductor, super capacitor；The grid of first metal-oxide-semiconductor It is connected with constant-current control module, the source electrode of the first metal-oxide-semiconductor is connected with the first diode, the drain electrode of the first metal-oxide-semiconductor and storage battery Cathode connects, and the anode of storage battery is connected with the other end of the first diode, the connection of super capacitor motor load system.
- A kind of 2. electri forklift potential energy regenerating unit according to claim 1, it is characterised in that first relay One end be connected with the source electrode of the second metal-oxide-semiconductor, the connection of the cathode of the other end and storage battery, one end and the electricity of second relay The drain electrode connection of machine load system, the second metal-oxide-semiconductor, the other end are connected with super capacitor.
- A kind of 3. electri forklift potential energy regenerating unit according to claim 2, it is characterised in that first relay One end and storage battery between connect first voltage detection module, between second relay and super capacitor connect second electricity Press detection module.
- A kind of 4. electri forklift potential energy regenerating unit according to claim 1, it is characterised in that the main control module Controller by first voltage detection module, the feedback voltage signal of second voltage detection module and forklift lifting signal, under Signal, master switch signal drop, to control the break-make of the second metal-oxide-semiconductor of the first control relay, the second relay and reduction voltage circuit.
- A kind of 5. electri forklift potential energy regenerating unit according to claim 1, it is characterised in that the current constant control mould Block, when the first relay disconnects, the second relay closes, can control the break-make of the first metal-oxide-semiconductor, and cause storage battery to super The charging of capacitance, and control charging current.
- A kind of 6. electri forklift potential energy regenerating unit according to claim 1, it is characterised in that the 3rd relay It is controlled by the controller.
- A kind of 7. electri forklift potential energy regenerating unit according to claim 6, it is characterised in that the motor load system For system when controller receives lifting signal, the 3rd relay closure, double acting motor generator drives double cropping as motor Rotated forward with oil pump-hydraulic motor, realize load lifting；When controller receives dropping signal, the 3rd relay closure, under load Drop drives double acting oil pump-hydraulic motor reversion to become hydraulic motor, drives the reversion power generation of double acting motor generator.
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| CN201710996692.3A CN107986196A (en) | 2017-10-19 | 2017-10-19 | A kind of electri forklift potential energy regenerating unit |
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| CN201710996692.3A CN107986196A (en) | 2017-10-19 | 2017-10-19 | A kind of electri forklift potential energy regenerating unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869462A (en) * | 2018-06-20 | 2018-11-23 | 浙江大学 | A kind of hydraulic cushion of hydraulic press device with energy recovery function |
| CN113526413A (en) * | 2021-07-20 | 2021-10-22 | 宁波如意股份有限公司 | Forklift lifting device and power generation efficiency control method thereof |
| CN113809797A (en) * | 2021-08-31 | 2021-12-17 | 江苏汇智高端工程机械创新中心有限公司 | Energy recovery control system and method for full-electric aerial work platform |
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| JP2007189004A (en) * | 2006-01-12 | 2007-07-26 | Hitachi Lighting Ltd | Dc power supply, power supply for light emitting diode, and illuminator |
| CN1830750A (en) * | 2006-03-31 | 2006-09-13 | 西安交通大学 | Electric fork track lifting control system possessing energy recovery device |
| CN102501849A (en) * | 2011-12-22 | 2012-06-20 | 山河智能装备股份有限公司 | Driving and energy recycling system for hybrid forklift |
| CN202643254U (en) * | 2012-06-19 | 2013-01-02 | 杭叉集团股份有限公司 | Forklift portal frame lifting control device with descending energy storage function |
| CN205575513U (en) * | 2016-05-05 | 2016-09-14 | 安徽合力股份有限公司 | Electric fork -lift potential energy recovery system |
| CN107176565A (en) * | 2016-12-14 | 2017-09-19 | 浙江大学 | A kind of fork truck energy saver and energy-saving control method |
| CN207551850U (en) * | 2017-10-19 | 2018-06-29 | 浙江大学 | A kind of electri forklift potential energy regenerating unit |
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| CN108869462A (en) * | 2018-06-20 | 2018-11-23 | 浙江大学 | A kind of hydraulic cushion of hydraulic press device with energy recovery function |
| CN113526413A (en) * | 2021-07-20 | 2021-10-22 | 宁波如意股份有限公司 | Forklift lifting device and power generation efficiency control method thereof |
| CN113809797A (en) * | 2021-08-31 | 2021-12-17 | 江苏汇智高端工程机械创新中心有限公司 | Energy recovery control system and method for full-electric aerial work platform |
| CN113809797B (en) * | 2021-08-31 | 2024-02-13 | 江苏汇智高端工程机械创新中心有限公司 | Energy recovery control system and method for full-electric aerial work platform |
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