CN202405846U - Electric energy collecting circuit for forklift - Google Patents
Electric energy collecting circuit for forklift Download PDFInfo
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- CN202405846U CN202405846U CN2011205551962U CN201120555196U CN202405846U CN 202405846 U CN202405846 U CN 202405846U CN 2011205551962 U CN2011205551962 U CN 2011205551962U CN 201120555196 U CN201120555196 U CN 201120555196U CN 202405846 U CN202405846 U CN 202405846U
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Abstract
The utility model provides an electric energy collecting circuit for a forklift. The electric energy collecting circuit comprises a motor controller. A voltage signal sampling end of the motor controller is respectively connected with a storage battery and large-capacity capacitors; a signal output end of the motor controller is respectively connected with the storage battery and the large-capacity capacitors; and the large-capacity capacitors for recycling electric energy generated by electric generation of a motor are connected with the motor in parallel. According to the electric energy collecting circuit provided by the utility model, when a forklift descends and goes downhill, a great amount of the electric energy is generated by power generation of the motor. The electric energy is absorbed by the large-capacity capacitors at the both ends of the motor, and then the energy of the large-capacity capacitors is released by the motor controller by means of charging the storage battery at a rated current. The electric energy collecting circuit provided by the utility model uses the large-capacity capacitors to absorb large current generated at the moment of the power generation of the motor, and charges the storage battery at a constant current, so that the damage on the service life of the storage battery, caused by the large current, can be avoided; the service life of the storage battery is prolonged; and the use ratio of the electric energy is improved.
Description
Technical field
The utility model relates to a kind of fork truck electric energy collecting circuit.
Background technology
At present, come into operation in a large number, and fork truck is when shelf decline or vehicles go down with the electri forklift of storage battery as electric energy; Because potential energy difference drives the motor reversing, electric power generation produces a large amount of electric energy and recharges storage battery; Yet immediate current is very big; Considerably beyond the specified charging current of storage battery, cause significantly reduce the useful life of storage battery, increased maintenance cost.
The utility model content
The purpose of the utility model is to provide a kind of fork truck electric energy collecting circuit that can reclaim, improve utilization rate of electrical to the fork truck electric energy, avoid accumulator super-charge.
For realizing above-mentioned purpose; The utility model has adopted following technical scheme: a kind of fork truck electric energy collecting circuit; Comprise electric machine controller; Its voltage signal sampling end links to each other with storage battery, large bulk capacitance respectively, and its signal output part links to each other with storage battery, large bulk capacitance respectively, and the large bulk capacitance that is used to reclaim the electric energy that electric power generation produces is attempted by motor.
Can know by technique scheme; The utility model is in the process of fork truck decline and descending; Electric power generation produces a large amount of electric energy; Electric energy quilt and the large bulk capacitance at the motor two ends absorb, and electric machine controller is through discharging the energy of large bulk capacitance with the specified electric current mode of charging a battery then.The utility model adopts large bulk capacitance to absorb the big electric current that electric power generation moment produces, and charges a battery with constant current then, thereby avoids the injury that life-span of big electric current accumulators brings, and has prolonged storage battery useful life, has improved the utilance of electric energy.
Description of drawings
Fig. 1 is the circuit diagram of the utility model.
Embodiment
A kind of fork truck electric energy collecting circuit; Comprise electric machine controller 3; Its voltage signal sampling end links to each other with storage battery 4, large bulk capacitance 2 respectively; Its signal output part links to each other with storage battery 4, large bulk capacitance 2 respectively, and the large bulk capacitance 2 that is used to reclaim the electric energy that motor 1 generating produces is attempted by motor 1, and described large bulk capacitance 2 is formed by a plurality of capacitances in series.Described large bulk capacitance 2 is formed by 40 capacitances in series, and to C40, all and connect a flows resistance, promptly the resistance R among Fig. 11 is to R40 on each electric capacity referring to the capacitor C among Fig. 11.
As shown in Figure 1; Described electric machine controller 3 comprises microprocessor MCU, and the ad3 pin of its storage battery 4 voltage signals that are used to sample links to each other with the positive pole of storage battery 4 through resistance R 106, and the ad2 pin of its large bulk capacitance 2 voltage signals that are used to sample links to each other with the positive pole of large bulk capacitance 2 through putting a left and right sides R105 pin; Its output pin out1 links to each other with the grid G of metal-oxide-semiconductor Q1; Its output pin out2 links to each other with the grid G of metal-oxide-semiconductor Q2, Q4 respectively, and its output pin out3 links to each other with the grid G of metal-oxide-semiconductor Q3, and the drain D of metal-oxide-semiconductor Q1 links to each other with the positive pole of storage battery 4; The source S of metal-oxide-semiconductor Q1 links to each other with the source S of metal-oxide-semiconductor Q2; The drain D of metal-oxide-semiconductor Q2 links to each other with the drain D of metal-oxide-semiconductor Q4, and the source S of metal-oxide-semiconductor Q4 links to each other with the source S of metal-oxide-semiconductor Q3, and the drain D of metal-oxide-semiconductor Q3 links to each other with the positive pole of large bulk capacitance 2.
As shown in Figure 1; One end of the negative electrode of described diode D1, inductance L 1 all is connected between the source S of source S and metal-oxide-semiconductor Q2 of metal-oxide-semiconductor Q1; The anode of diode D1 links to each other with the negative pole of storage battery 4; The other end of inductance L 1 links to each other with an end of the primary coil of current transformer T1, and the negative electrode of the other end of the primary coil of current transformer T1, diode D2 all is connected between the source S of source S and metal-oxide-semiconductor Q3 of metal-oxide-semiconductor Q4, and the secondary coil of current transformer T is connected with resistance R 11, R101; The ad1 pin of microprocessor MCU links to each other with an end of resistance R 102; The other end of resistance R 102 links to each other with the output of amplifier U2A, and the normal phase input end of amplifier U2A is connected between resistance R 101, the R100, and the inverting input of amplifier U2A links to each other with resistance R 103, R104 respectively.
After key switch was opened, electric machine controller 3 at first got into the pre-charge state of giving large bulk capacitance 2, and its process is;
After microprocessor MCU power supply electrifying resets, through sample the respectively voltage of large bulk capacitance 2 and storage battery 4 of its ad2, ad3 pin, if the pressure reduction of storage battery 4 and large bulk capacitance 2 is greater than 2V; Be after the voltage of storage battery 4 deducts the voltage of large bulk capacitance 2, this difference is greater than 2V, the output pin out2 of microprocessor MCU, out3 output low level; Metal-oxide-semiconductor Q2, Q3, Q4 end, the output pin out1 output high level of microprocessor MCU, driven MOS pipe Q1 conducting; The voltage Vb of storage battery 4 passes through metal-oxide-semiconductor Q1, inductance L 1, current transformer T1, the built-in diode of metal-oxide-semiconductor Q3 successively; Give large bulk capacitance 2 chargings, charging current is linear increment, the flow through primary coil of current transformer T1 of charging current; The secondary coil of corresponding current transformer T1 induces and the proportional voltage of electric current; After resistance R 100, R101 dividing potential drop, after amplifying through operational amplifier U2A again, deliver to the ad1 pin of microprocessor MCU.
Microprocessor MCU is through its ad1 pin, and the continuous sampling current value is when finding that electric current exceeds rated current; Its output pin out1 upset; Output low level, metal-oxide-semiconductor Q1 ends, and inductance L 1 is through current transformer T1, metal-oxide-semiconductor Q3 diode-built-in; Diode D1 continues to large bulk capacitance 2 chargings, charging current linear decrease; And microprocessor MCU is when sampling electric current less than rated current, and the output pin out1 of microprocessor MCU overturns again, and opening M OS manages Q1, keeps rated current to give large bulk capacitance 2 precharge with this.Simultaneously, microprocessor MCU passes through its ad3, ad2 pin, continuous sampling storage battery 4 and large bulk capacitance 2 voltages; If the two pressure reduction is less than 2V, after promptly the voltage of storage battery 4 deducted the voltage of large bulk capacitance 2, this difference was less than 2V; Then large bulk capacitance 2 precharge finish; The output pin out1 of microprocessor MCU, out2 export high level, output pin out3 output low level, and electric machine controller 3 gets into normal operating conditions.
Go descending or shelf when descending at fork truck, because potential energy difference is arranged, motor 1 reverses, and produces a large amount of electric energy, and moment is absorbed by large bulk capacitance 2, its magnitude of voltage rising.The voltage of microprocessor MCU continuous sampling storage battery 4 and large bulk capacitance 2; If the pressure reduction of large bulk capacitance 2 and storage battery 4 is greater than 10V; Be after the voltage of large bulk capacitance 2 deducts the voltage of storage battery 4, this difference is greater than 10V, and electric machine controller 3 gets into the state of accumulators 4 chargings; The output pin out2 output low level of microprocessor MCU, metal-oxide-semiconductor Q2, Q4 end.The output pin out3 output high level of microprocessor MCU; Driven MOS pipe Q3 conducting; Large bulk capacitance 2 voltage Vc pass through metal-oxide-semiconductor Q3, current transformer T1, inductance L 1, metal-oxide-semiconductor Q1 diode-built-in successively, accumulators 4 chargings, and electric current is linear increment; The flow through primary coil of current transformer T1 of electric current; The secondary coil of corresponding current transformer T1 induces and the proportional voltage of electric current, after resistance R 100, R101 dividing potential drop, delivers to the ad1 pin of microprocessor MCU after amplifying through operational amplifier U2A again.
Microprocessor MCU is through its ad1 pin, and the continuous sampling current value is when finding that electric current exceeds rated current; The output pin out3 upset of microprocessor MCU, output low level, metal-oxide-semiconductor Q3 ends; Inductance L 1 continues accumulators 4 chargings, electric current linear decrease through diode D2; And electric current is during less than rated current, and the output pin out3 of microprocessor MCU overturns again, and opening M OS manages Q3, keeps 4 chargings of rated current accumulators with this.Simultaneously, microprocessor MCU passes through its pin ad2, ad3, the voltage of continuous sampling large bulk capacitance 2 and storage battery 4; If the pressure reduction of large bulk capacitance 2 and storage battery 4 is less than 5V; Be that this difference was less than 5V after the voltage of large bulk capacitance 2 deducted the voltage of storage battery 4, electric machine controller 3 withdraws from the charged state of accumulators 4; Get into normal operating conditions; The output pin out2 output high level of microprocessor MCU, output pin out3 output low level, the voltage Vb of storage battery 4 gives motor 1 power supply through electric machine controller 3.
In sum; The utility model is in the process of fork truck decline and descending; Motor 1 generating produces a large amount of electric energy, and electric energy quilt and the large bulk capacitance 2 at motor 1 two ends absorb, and electric machine controller 3 is through discharging the energy of large bulk capacitance 2 with specified electric current accumulators 4 charging modes then.The utility model adopts large bulk capacitance 2 to absorb the big electric current of motor 1 generating moment generation; Then with 4 chargings of constant current accumulators; Thereby the injury that the life-span of avoiding big electric current accumulators 4 brings has prolonged 4 useful lifes of storage battery, has improved the utilance of electric energy.
Claims (5)
1. fork truck electric energy collecting circuit; It is characterized in that: comprise electric machine controller (3); Its voltage signal sampling end links to each other with storage battery (4), large bulk capacitance (2) respectively; Its signal output part links to each other with storage battery (4), large bulk capacitance (2) respectively, and the large bulk capacitance (2) that is used to reclaim the electric energy that motor (1) generating produces is attempted by motor (1).
2. fork truck electric energy collecting circuit according to claim 1 is characterized in that: described large bulk capacitance (2) is formed by a plurality of capacitances in series.
3. fork truck electric energy collecting circuit according to claim 1; It is characterized in that: described electric machine controller (3) comprises microprocessor MCU; The ad3 pin of its storage battery (4) voltage signal that is used to sample links to each other with the positive pole of storage battery (4) through resistance R 106; The ad2 pin of its large bulk capacitance (2) voltage signal that is used to sample links to each other with the positive pole of large bulk capacitance (2) through a some left and right sides R105 pin, and its output pin out1 links to each other with the grid G of metal-oxide-semiconductor Q1, and its output pin out2 links to each other with the grid G of metal-oxide-semiconductor Q2, Q4 respectively; Its output pin out3 links to each other with the grid G of metal-oxide-semiconductor Q3; The drain D of metal-oxide-semiconductor Q1 links to each other with the positive pole of storage battery (4), and the source S of metal-oxide-semiconductor Q1 links to each other with the source S of metal-oxide-semiconductor Q2, and the drain D of metal-oxide-semiconductor Q2 links to each other with the drain D of metal-oxide-semiconductor Q4; The source S of metal-oxide-semiconductor Q4 links to each other with the source S of metal-oxide-semiconductor Q3, and the drain D of metal-oxide-semiconductor Q3 links to each other with the positive pole of large bulk capacitance (2).
4. fork truck electric energy collecting circuit according to claim 2 is characterized in that: described large bulk capacitance (2) is formed by 40 capacitances in series, on each electric capacity all and connect a flows resistance.
5. fork truck electric energy collecting circuit according to claim 3; It is characterized in that: also comprise diode D1, inductance L 1; One end of the negative electrode of diode D1, inductance L 1 all is connected between the source S of source S and described metal-oxide-semiconductor Q2 of described metal-oxide-semiconductor Q1; The anode of diode D1 links to each other with the negative pole of storage battery (4); The other end of inductance L 1 links to each other with an end of the primary coil of current transformer T1, and the negative electrode of the other end of the primary coil of current transformer T1, diode D2 all is connected between the source S of source S and metal-oxide-semiconductor Q3 of metal-oxide-semiconductor Q4, and the secondary coil of current transformer T is connected with resistance R 11, R101; The ad1 pin of microprocessor MCU links to each other with an end of resistance R 102; The other end of resistance R 102 links to each other with the output of amplifier U2A, and the normal phase input end of amplifier U2A is connected between resistance R 101, the R100, and the inverting input of amplifier U2A links to each other with resistance R 103, R104 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205551962U CN202405846U (en) | 2011-12-28 | 2011-12-28 | Electric energy collecting circuit for forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205551962U CN202405846U (en) | 2011-12-28 | 2011-12-28 | Electric energy collecting circuit for forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202405846U true CN202405846U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205551962U Expired - Fee Related CN202405846U (en) | 2011-12-28 | 2011-12-28 | Electric energy collecting circuit for forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202405846U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888899A (en) * | 2019-03-25 | 2019-06-14 | 崔进 | A kind of electric energy reclaiming type switched reluctance motor |
| CN111142438A (en) * | 2019-05-06 | 2020-05-12 | 南京瑞贻电子科技有限公司 | Cloud platform connection port control device and control method |
-
2011
- 2011-12-28 CN CN2011205551962U patent/CN202405846U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888899A (en) * | 2019-03-25 | 2019-06-14 | 崔进 | A kind of electric energy reclaiming type switched reluctance motor |
| CN111142438A (en) * | 2019-05-06 | 2020-05-12 | 南京瑞贻电子科技有限公司 | Cloud platform connection port control device and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |