CN102412608B - Charging and discharging circuit of electrical system - Google Patents
Charging and discharging circuit of electrical system Download PDFInfo
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- CN102412608B CN102412608B CN201110385103.0A CN201110385103A CN102412608B CN 102412608 B CN102412608 B CN 102412608B CN 201110385103 A CN201110385103 A CN 201110385103A CN 102412608 B CN102412608 B CN 102412608B
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- contactor
- resistance
- touch point
- relay
- logic control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/20—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using multi-position switch, e.g. drum, controlling motor circuit by means of relays
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- 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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of mechanical electricity, in particular to a charging and discharging circuit of an electrical system, which comprises: energy storage unit, motor drive, battery, its characterized in that still includes: the logic control unit is connected with the energy storage unit and the motor driver through a data bus; the switch control unit is connected with the logic control unit and the storage battery, receives a logic control signal sent by the logic control unit, and controls the on and off of each touch point in the voltage division unit; and the voltage dividing unit is connected with the energy storage unit and the motor driver and used for receiving the switch control signal sent by the switch control unit, disconnecting or closing each touch point and adjusting the resistance value of the voltage dividing resistor. The charging and discharging circuit of the electrical system provided by the embodiment of the invention can timely adjust the resistance value of the divider resistor, greatly improves the charging and discharging efficiency and has stronger maneuverability.
Description
Technical field
The present invention relates to mechanical electric art, relate in particular to a kind of charge-discharge circuit of electrical system.
Background technology
The auxiliary electrical dynamical system of oil electric mixed dynamic machinery comprises: electrical energy storage unit, dynamoelectric machine and driver thereof, system control unit.In the time of design selection, in order to put forward high-octane service efficiency, tend to use high-tension drive system, thereby must select the high-voltage energy storage device and the electric fittings that match with this high-tension drive system.Conventionally,, in overhaul of the equipments or while safeguarding, need to, by the electric energy of high-voltage energy storage device by outer load discharge, make voltage drop to safe voltage.Because plant equipment often works in all kinds of isolated areas after dispatching from the factory, and more very much not Portable belt of energy device volume is let out in electric discharge.
Meanwhile, all there is certain leakage current in oil electric mixed dynamic machinery energy storage device used, not using for a long time or when zero electric energy transportation (super capacitor), and need to be to this energy storage device charging.If utilize driven by engine electric power generation to charge for energy storage device, may be because of the voltage difference between generating voltage and energy storage device terminal voltage excessive and cause overcurrent, thus damage electric original paper.Conventionally the method for utilizing external charge machine or increase current limliting precharging circuit in motor driver addresses the above problem.But the former needs external power supply to be unfavorable for field work; The latter's installing space is limited by driver size, causes the heat radiation that large power consumption is let out energy device and is unfavorable for current-limiting circuit can not be installed.
Summary of the invention
The embodiment of the present invention provides a kind of charge-discharge circuit of electrical system, resistance that can timely adjustment divider resistance, larger raising efficiency for charge-discharge, and mobility is stronger.
The embodiment of the present invention provides a kind of charge-discharge circuit of electrical system, comprising: energy-storage units, motor driver, storage battery, also comprise:
Logic control element, is connected with described energy-storage units and described electrode driver by data/address bus;
Switch control unit, is connected with described logic control element and described storage battery, receives the logic control signal that described logic control element sends, and controls disconnection and the closure of each touch point that is arranged in partial pressure unit;
Partial pressure unit, is connected with described energy-storage units and described electrode driver, and the switch controlling signal sending for receiving described switch control unit disconnects or closed described each touch point, adjusts the resistance of divider resistance.
The embodiment of the present invention provides a kind of charge-discharge circuit of electrical system, by logic control element according to the current voltage of energy-storage units, send logic control signal to switch control unit, make direct contactor and the relay conducting in switch control unit or close, then control each touch point in partial pressure unit and close or disconnect, to adjust the resistance value of divider resistance.Therefore, use the charge-discharge circuit of the electrical system that provides of the embodiment of the present invention, resistance that can timely adjustment divider resistance, larger raising efficiency for charge-discharge, and mobility is stronger.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the charge-discharge circuit of electrical system in the embodiment of the present invention;
Fig. 2 is the partial pressure unit schematic diagram of charge-discharge circuit in the embodiment of the present invention;
Fig. 3 is the schematic diagram of the charge-discharge circuit of electrical system in the embodiment of the present invention;
Fig. 4 is the schematic diagram of the discharge flow path of electrical system in the embodiment of the present invention;
Fig. 5 is the schematic diagram of the charging flow of electrical system in another embodiment of the present invention.
Embodiment
Below in conjunction with each accompanying drawing, embodiment of the present invention technical scheme main realized to principle, embodiment and the beneficial effect that should be able to reach is at length set forth.
The problem existing in order to solve prior art, the embodiment of the present invention provides a kind of charge-discharge circuit of electrical system, as shown in Figure 1, comprising: energy-storage units 101, motor driver 102, storage battery 103, also comprise:
Preferably, this charge-discharge circuit also comprises: display screen 107, is connected with energy-storage units 101, described motor driver 102 and logic control element 104, for showing the current voltage of energy-storage units 101.
Concrete, in this charge-discharge circuit, the logic control signal of the digital form that switch control unit 105 receive logic control units 104 send, conducting or close corresponding D.C. contactor or relay; After D.C. contactor or relay conducting, control corresponding touch point closure or disconnect, changing the resistance value in partial pressure unit.Like this, can be in energy-storage units charge and discharge process, the resistance value of in good time adjustment partial pressure unit, improves efficiency for charge-discharge, and has stronger mobility.
Wherein, this partial pressure unit has the function of adjustable resistor, its concrete formation can design according to actual needs, can select power resistor or other power consumption components and parts, can use series-parallel system also can use the adjustable circuit form of other discharge powers.For example, this partial pressure unit can comprise at least three divider resistances and at least six touch points; As shown in Figure 2 (in Fig. 2 the joining of each circuit do not distinguish be communicated with or disconnected, do not have a little), in the time that partial pressure unit 106 comprises three divider resistances and six touch points, be specially:
The first contactor touch point Km1, first end connects the positive pole of energy-storage units 101, the second first end of end contact resistance R1 and the first end of resistance R 2;
The second contactor touch point Km2, the second end of first end contact resistance R2, the first end of the second end contact resistance R3, the second end of this resistance R 3 connects the positive pole of energy-storage units 101;
The 3rd contactor touch point Km3, first end connects the second end of the second contactor touch point Km2, and the second end of the second end and resistance R 1 is connected the first end of the 4th contactor touch point Km4 and the first end of the 5th contactor touch point Km5 together; The second end of the 4th contactor touch point Km4 connects the negative pole of energy-storage units 101;
The second end of above-mentioned the 5th contactor touch point Km5 connects the first end of the 6th contactor touch point Km6; The second end of the 6th contactor touch point Km6 connects the positive pole of energy-storage units 101;
When electrical system is normally worked, the state of the 6th contactor touch point Km6 is normally closed, and the state of all the other touch points is for often opening;
When electrical system discharges and recharges, the initial condition of this first contactor touch point Km1 to the six contactor touch point Km6 is disconnection.
In addition, the negative pole of energy-storage units 101 directly connects motor driver 102, and the positive pole of energy-storage units 101 connects motor driver 102 by the 6th contactor touch point Km6.
By disconnection or the closure of above-mentioned touch point, can in electrical system circuit, access different resistance values.The disconnection of this each touch point or closure, by corresponding D.C. contactor control in switch control unit 105, in the time of D.C. contactor conducting, are controlled corresponding touch point closure, and no person disconnects.
The equal ground connection of first end of two relays (KA1, KA2) and six D.C. contactors (KM1 to KM6), and connecting the negative pole of storage battery 103, the first end of these two relays and six D.C. contactors is diode cathode direction in relay and D.C. contactor;
With the second first end of end connection hand switch S of the 4th D.C. contactor KM4 that in partial pressure unit 106, the 4th contactor touch point Km4 is corresponding and the first end k1 of the first relay contact switch Ka1 of relay K A1; The second end of all the other D.C. contactors, the first relay and the second relay is all connected logic control element 104, and these all the other D.C. contactors, the first relay and second relay the second end are diode cathode direction in relay and D.C. contactor;
This first relay contact switch Ka1 is double contact switch, and its second end k2 connects the second end of hand switch S, and the 3rd end k3 connects the second end with the second D.C. contactor KM2 that in partial pressure unit 106, the second contactor touch point Km2 is corresponding; Between the second end andlogic control unit 104 of this second D.C. contactor KM2, connect diode VD1;
The first end of the second relay contact switch Ka2 of relay K A2 connects the positive pole of storage battery 103, and the second end connects the second end of hand switch S and the second end of the first relay contact switch Ka1;
When electrical system discharges and recharges, the initial condition of this hand switch S is for disconnecting, and the switch k2 that is positioned at first relay contact switch Ka1 the second end is normally opened contact switch, and the switch that is positioned at the first relay contact switch Ka1 the 3rd end k3 is normally-closed contact switch.
In conjunction with Fig. 1, Fig. 2 and Fig. 3, electrical system is in breakdown maintenance state, while discharging the electric weight of energy-storage units 101, closed hand switch S, the second D.C. contactor KM2 and the equal conducting of the 4th D.C. contactor KM4, switch controlling signal is sent to partial pressure unit 106, control the second contactor touch point Km2 and the 4th contactor touch point Km4 closure, resistance R 1, resistance R 2 and resistance R 3 are connected, and discharge the electric weight of energy-storage units 101 by the resistance after series connection.Like this, can in the situation that not powering on, electrical system carry out the electric discharge of energy-storage units.
In conjunction with Fig. 1, Fig. 2 and Fig. 3, when electrical system discharges the electric weight in energy-storage units 101 automatically, logic control element 104 sends logic control signal to the first relay K A1, control the first relay K A1 conducting, and then the normally opened contact switch closure, normally-closed contact switch of controlling the first relay contact switch Ka1 disconnect, make the 4th D.C. contactor KM4 conducting; The 4th D.C. contactor KM4 controls the 4th contactor touch point Km4 closure of its correspondence.
Then, above-mentioned logic control element 104 obtains the current voltage of energy-storage units 101; Current voltage and the first voltage threshold U1 are compared, if while being greater than the first voltage threshold U1, the resistance value of adjusting partial pressure unit 106 is the first resistance; If be not more than the first voltage threshold U1, current voltage and second voltage threshold value U2 are compared, if little, the resistance value of adjusting partial pressure unit 106 is the second resistance; If be not more than second voltage threshold value U2 and be greater than safe voltage U3, the resistance value of adjusting partial pressure unit 106 is the 3rd resistance; If be not more than described safe voltage U3, stop electric discharge;
Wherein, the first resistance is greater than the second resistance, and the second resistance is greater than the 3rd resistance.
In conjunction with Fig. 1, Fig. 2 and Fig. 3, in the time automatically energy-storage units 101 being charged in the situation of the normal work of electrical system, logic control element 104 sends logic control signal to the 5th D.C. contactor KM5 and the 6th D.C. contactor KM6, conducting the 5th D.C. contactor KM5, closes the 6th D.C. contactor KM6; The 5th D.C. contactor KM5 controls the 5th contactor touch point Km5 closure of its correspondence, and the 6th contactor touch point Km6 that the 6th D.C. contactor KM6 controls its correspondence disconnects;
Then, above-mentioned logic control element 104 obtains the current voltage of energy-storage units 101, determines the voltage difference Δ U of normal working voltage and current voltage; Voltage difference Δ U and the first voltage difference threshold value U1 ' are compared, if be greater than the first voltage difference threshold value U1 ', the resistance value of adjusting partial pressure unit 106 is the first resistance; If be not more than the first voltage difference threshold value U1 ', voltage difference Δ U and second voltage difference threshold U2 ' are compared, if little, the resistance value of adjusting partial pressure unit 106 is the second resistance; If be not more than second voltage difference threshold U2 ' and be greater than minimum voltage limit value U3 ', the resistance value of adjusting partial pressure unit 106 is the 3rd resistance; If be not more than minimum voltage limit value U3 ', switch to conventional control circuit, the connection of partial pressure unit described in bypass;
Wherein, the first resistance is greater than the second resistance, and the second resistance is greater than the 3rd resistance.
Adjust partial pressure unit 106 resistances, be the mode of the first resistance, the second resistance, the 3rd resistance, can reference table one and table two.
Table one
| Electric pressure | Conducting contactor | Adjust the resistance of |
| Umax≥U≥U1 | KM2 | R=R1+R2+R3 |
| U1＞U≥U2 | KM1,KM3 | R=R1×R2/(R1+R2) |
| U2＞U≥U3 | KM1,KM2,KM3 | R=R1×R2×R3/(R1×R2+R2×R3+R1×R3) |
Table two
| Electric pressure | Conducting contactor | Adjust the resistance of |
| ΔU≥U1’ | KM2 | R=R1+R2+R3 |
| U1’＞ΔU≥U2’ | KM1,KM3 | R=R1×R2/(R1+R2) |
| U2’＞ΔU≥U3’ | KM1,KM2,KM3 | R=R1×R2×R3/(R1×R2+R2×R3+R1×R3) |
Concrete, when the resistance value of adjustment partial pressure unit 106 is the first resistance, logic control element 104 sends the logic control signal of digital form, conducting the second D.C. contactor KM2 to the second D.C. contactor KM2; This second D.C. contactor KM2 controls the second contactor touch point Km2 closure of its correspondence, and resistance R 1, resistance R 2 and resistance R 3 are connected.When the resistance value of adjustment partial pressure unit 106 is the second resistance, logic control element 104 sends the logic control signal of digital form, conducting the first D.C. contactor KM1 and the 3rd D.C. contactor KM3 to the first D.C. contactor KM1 and the 3rd D.C. contactor KM3; This first D.C. contactor KM1 controls the first contactor touch point Km1 closure of its correspondence, and the 3rd D.C. contactor KM3 controls the 3rd contactor touch point Km3 closure of its correspondence, by resistance R 1 and resistance R 2 parallel connections.When the resistance value of adjustment partial pressure unit 106 is the 3rd resistance, this logic control element 104 sends respectively the logic control signal of digital form, conducting the first D.C. contactor KM1, the second D.C. contactor KM2 and the 3rd D.C. contactor KM3 to the first D.C. contactor KM1, the second D.C. contactor KM2 and the 3rd D.C. contactor KM3; This first D.C. contactor KM1 controls the first contactor touch point Km1 closure of its correspondence, and the second D.C. contactor KM2 controls the second contactor touch point Km2 closure of its correspondence; The 3rd D.C. contactor KM3 controls the 3rd contactor touch point Km3 closure of its correspondence, by resistance R 1, resistance R 2 and resistance R 3 parallel connections.
In the time that the current voltage of the energy-storage units 101 after electric discharge is not more than safe voltage value, conducting the second relay K A2, the second relay contact switch Ka2 is disconnected, then by the first relay K A1, the first D.C. contactor KM1, the second D.C. contactor KM2 and the equal power-off of the 3rd D.C. contactor KM3, to disconnect the first relay switch Ka1, the first contactor touch point Km1, the second contactor touch point Km2 and the 3rd contactor touch point Km3.Finally, conducting the 6th D.C. contactor KM6, makes the 6th contactor touch point Km6 closure.
When in charging process, the voltage difference between current voltage and the normal working voltage of energy-storage units 101 is not more than minimum voltage limit value, switches to conventional control circuit, the connection of partial pressure unit described in bypass.Namely, first conducting the 6th D.C. contactor KM6, makes the 6th contactor touch point Km6 closure.Then, by the 5th relay K M5, the first D.C. contactor KM1, the second D.C. contactor KM2 and the equal power-off of the 3rd D.C. contactor KM3, to disconnect the 5th contactor touch point Km5, the first contactor touch point Km1, the second contactor touch point Km2 and the 3rd contactor touch point Km3, switch to conventional control circuit, the connection of partial pressure unit described in bypass.
Preferably, can on display screen 107, demonstrate in real time the current voltage of energy-storage units 101, but also can on this display screen 107, automatic discharging button, automatic charging button etc. be set.
Pass through foregoing description, can find out, the charge-discharge circuit of the electrical system that the use embodiment of the present invention provides, by logic control element according to the current voltage of energy-storage units, send logic control signal to switch control unit, make direct contactor and the relay conducting in switch control unit or close, then controlling each touch point in partial pressure unit and close or disconnect, to adjust the resistance value of divider resistance.Therefore, use the charge-discharge circuit of the electrical system that provides of the embodiment of the present invention, resistance that can timely adjustment divider resistance, larger raising efficiency for charge-discharge, and mobility is stronger.
The charge-discharge circuit of the electrical system embodiment of the present invention being provided below by specific embodiment is described in detail, and in conjunction with the content shown in above-mentioned Fig. 1 to Fig. 3, as shown in Figure 4, when electrical system is carried out to automatic discharging, comprises the following steps:
Step 402, closed the 4th contactor touch point Km4; Concrete, logic control element sends logic control signal to the first relay K A1, and conducting the first relay K A1 disconnects the first switch closure of the first relay switch Ka1, second switch, conducting the 4th D.C. contactor KM4 thus.After the 4th D.C. contactor KM4 conducting, produce magnetic field, make the 4th contactor touch point Km4 closure.
Step 404, logic control element obtain the current voltage of energy-storage units, and compare with the first voltage threshold, if be not more than, and execution step 405; If be greater than,, after closed the second contactor touch point Km2, continue execution step 405;
Step 405, current voltage and second voltage threshold value are compared, if be not more than, execution step 407; If be greater than, perform step 406;
After step 406, disconnection the second contactor touch point Km2, closed the first contactor touch point Km1 and the 3rd contactor touch point Km3, then continue execution step 407;
After step 409, closed the second relay switch Ka2, disconnect the first relay switch Ka1, the first contactor touch point Km1, the second contactor touch point Km2 and the 3rd contactor touch point Km3;
In conjunction with the content shown in above-mentioned Fig. 1 to Fig. 3, as shown in Figure 5, when electrical system is carried out to current-limiting charge, comprise the following steps:
Step 501, disconnection the 6th contactor touch point Km6; Concrete, when electrical system is normally worked, the 6th contactor touch point Km6 is closure state.In the time that electrical system is filled, logic control element sends logic control signal to the 6th D.C. contactor KM6, closes the 6th D.C. contactor KM6, and the 6th contactor touch point Km6 is disconnected.
After step 506, closed the first contactor touch point Km1, disconnect the second contactor touch point Km2, more closed the 3rd contactor touch point Km3, execution step 507 continued;
Step 507, current voltage difference and tertiary voltage difference threshold are compared, if be greater than, closed the second contactor touch point Km2, execution step 508; If be not more than, execution step 509;
Pass through foregoing description, can find out, the charge-discharge circuit of the electrical system that the use embodiment of the present invention provides, by logic control element according to the current voltage of energy-storage units, send logic control signal to switch control unit, make direct contactor and the relay conducting in switch control unit or close, then controlling each touch point in partial pressure unit and close or disconnect, to adjust the resistance value of divider resistance.Therefore, use the charge-discharge circuit of the electrical system that provides of the embodiment of the present invention, resistance that can timely adjustment divider resistance, larger raising efficiency for charge-discharge, and mobility is stronger.
The application is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present application, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and the spirit and scope that do not depart from the application to the application.Like this, if within these of the application are revised and modification belongs to the scope of the application's claim and equivalent technologies thereof, the application is also intended to comprise these changes and modification interior.
Claims (10)
1. a charge-discharge circuit for electrical system, comprising: energy-storage units, motor driver, storage battery, it is characterized in that, and also comprise:
Logic control element, is connected with described energy-storage units and described motor driver by data/address bus;
Switch control unit, is connected with described logic control element and described storage battery, receives the logic control signal that described logic control element sends, and controls disconnection and the closure of each touch point that is arranged in partial pressure unit;
Partial pressure unit, specifically comprise at least three divider resistances and at least six touch points, be connected with described energy-storage units and described motor driver, the switch controlling signal sending for receiving described switch control unit, disconnect or closed described each touch point, adjust the resistance of divider resistance, wherein, in the time that partial pressure unit comprises three divider resistances and six touch points
The first contactor touch point, first end connects the positive pole of described energy-storage units, the second first end of end contact resistance R1 and the first end of resistance R 2;
The second contactor touch point, first end connects the second end of described resistance R 2, the first end of the second end contact resistance R3, the second end of described resistance R 3 connects the positive pole of described energy-storage units;
The 3rd contactor touch point, first end connects the second end of described the second contactor touch point, and the second end of the second end and described resistance R 1 is connected the first end of the 4th contactor touch point and the first end of the 5th contactor touch point together; The second end of described the 4th contactor touch point connects the negative pole of described energy-storage units;
The second end of described the 5th contactor touch point connects the first end of the 6th contactor touch point;
The second end of described the 6th contactor touch point connects the positive pole of described energy-storage units;
When electrical system is normally worked, the state of described the 6th contactor touch point is normally closed, and the state of all the other touch points is for often opening;
When electrical system discharges and recharges, described the first contactor touch point to the initial condition of described the 6th contactor touch point is disconnection.
2. the charge-discharge circuit of electrical system as claimed in claim 1, is characterized in that, described switch control unit receives the logic control signal of the digital form that described logic control element sends, conducting or close corresponding D.C. contactor or relay; After described D.C. contactor or relay conducting, control corresponding touch point closure or disconnect, changing the resistance value in described partial pressure unit.
3. the charge-discharge circuit of electrical system as claimed in claim 1, is characterized in that, described switch control unit comprises: with the same number of D.C. contactor of touch point in described partial pressure unit, at least two relays, hand switch;
When described switch control unit comprises the first relay, the second relay and six D.C. contactors, when each relay all has a relay contact,
The equal ground connection of first end of two relays and six D.C. contactors, and connect the negative pole of described storage battery, the first end of two relays and six D.C. contactors is diode cathode direction in relay and D.C. contactor;
The second end of four D.C. contactor corresponding with the 4th contactor touch point in described partial pressure unit connects the first end of the first end of described hand switch and the first relay contact switch of the first relay; The second end of all the other D.C. contactors, described the first relay and described the second relay is all connected described logic control element, and the second end of described all the other D.C. contactors, described the first relay and described the second relay is diode cathode direction in relay and D.C. contactor;
Described the first relay contact switch is double contact switch, and its second end connects the second end of described hand switch, and the 3rd end connects the second end with the second D.C. contactor that in described partial pressure unit, the second contactor touch point is corresponding; Between the second end of described the second D.C. contactor and described logic control element, be connected diode;
The first end of the second relay contact switch of the second relay connects the positive pole of described storage battery, and the second end connects the second end of described hand switch and the second end of described the first relay contact switch;
When electrical system discharges and recharges, the initial condition of described hand switch is for disconnecting, and the switch that is positioned at described first relay contact switch the second end is normally opened contact switch, and the switch that is positioned at described the first relay contact switch the 3rd end is normally-closed contact switch.
4. the charge-discharge circuit of electrical system as claimed in claim 3, it is characterized in that, electrical system is in breakdown maintenance state, while discharging the electric weight of described energy-storage units, closed described hand switch, described the second D.C. contactor and the equal conducting of described the 4th D.C. contactor, switch controlling signal is sent to described partial pressure unit, control described the second contactor touch point and described the 4th contactor touch point closure, described resistance R 1, resistance R 2 and resistance R 3 are connected, and discharge the electric weight of described energy-storage units by the resistance after series connection.
5. the charge-discharge circuit of electrical system as claimed in claim 3, it is characterized in that, when electrical system discharges the electric weight in described energy-storage units automatically, described logic control element sends logic control signal to described the first relay, control described the first relay conducting, and then the normally opened contact switch closure, normally-closed contact switch of controlling described the first relay contact switch disconnect, make described the 4th D.C. contactor conducting; Described the 4th contactor touch point closure of described the 4th its correspondence of D.C. contactor control;
Described logic control element obtains the current voltage of described energy-storage units;
Described current voltage and the first voltage threshold are compared, if while being greater than described the first voltage threshold, the resistance value of adjusting described partial pressure unit is the first resistance;
If be not more than described the first voltage threshold, described current voltage and second voltage threshold value are compared, if be greater than, the resistance value of adjusting described partial pressure unit is the second resistance;
If be not more than described second voltage threshold value and be greater than safe voltage, the resistance value of adjusting described partial pressure unit is the 3rd resistance;
If be not more than described safe voltage, stop electric discharge;
Wherein, described the first resistance is greater than described the second resistance, and described the second resistance is greater than described the 3rd resistance.
6. the charge-discharge circuit of electrical system as claimed in claim 3, it is characterized in that, in the time automatically described energy-storage units being charged in the situation of the normal work of electrical system, described logic control element sends logic control signal to described the 5th D.C. contactor and the 6th D.C. contactor, conducting the 5th D.C. contactor, closes the 6th D.C. contactor; Described the 5th contactor touch point closure of the 5th its correspondence of D.C. contactor control, described the 6th contactor touch point of the 6th its correspondence of D.C. contactor control disconnects;
Described logic control element obtains the current voltage of described energy-storage units, determines the voltage difference of normal working voltage and described current voltage;
Described voltage difference and the first voltage difference threshold value are compared, if while being greater than described the first voltage difference threshold value, the resistance value of adjusting described partial pressure unit is the first resistance;
If be not more than described the first voltage difference threshold value, described voltage difference and second voltage difference threshold are compared, if be greater than, the resistance value of adjusting described partial pressure unit is the second resistance;
If be not more than described second voltage difference threshold and be greater than minimum voltage limit value, the resistance value of adjusting described partial pressure unit is the 3rd resistance;
If be not more than described minimum voltage limit value, switch to conventional control circuit, the connection of partial pressure unit described in bypass;
Wherein, described the first resistance is greater than described the second resistance, and described the second resistance is greater than described the 3rd resistance.
7. the charge-discharge circuit of the electrical system as described in claim 5 or 6, it is characterized in that, when the resistance value of adjusting described partial pressure unit is the first resistance, described logic control element sends the logic control signal of digital form to described the second D.C. contactor, the second D.C. contactor described in conducting; The described second contactor touch point closure of described second its correspondence of D.C. contactor control, connects resistance R 1, resistance R 2 and resistance R 3.
8. the charge-discharge circuit of the electrical system as described in claim 5 or 6, it is characterized in that, when the resistance value of adjusting described partial pressure unit is the second resistance, described logic control element sends the logic control signal of digital form to the first D.C. contactor and the 3rd D.C. contactor, the first D.C. contactor and the 3rd D.C. contactor described in conducting; The described first contactor touch point closure of described first its correspondence of D.C. contactor control, described the 3rd contactor touch point closure of described the 3rd its correspondence of D.C. contactor control, by resistance R 1 and resistance R 2 parallel connections.
9. the charge-discharge circuit of the electrical system as described in claim 5 or 6, it is characterized in that, when the resistance value of adjusting described partial pressure unit is the 3rd resistance, described logic control element sends respectively the logic control signal of digital form to the first D.C. contactor, the second D.C. contactor and the 3rd D.C. contactor, the first D.C. contactor, the second D.C. contactor and the 3rd D.C. contactor described in conducting; The described first contactor touch point closure of described first its correspondence of D.C. contactor control, the described second contactor touch point closure of described second its correspondence of D.C. contactor control; Described the 3rd contactor touch point closure of described the 3rd its correspondence of D.C. contactor control, by resistance R 1, resistance R 2 and resistance R 3 parallel connections.
10. the charge-discharge circuit of electrical system as claimed in claim 1, is characterized in that, also comprises:
Display screen, is connected with described energy-storage units, described motor driver and described logic control element, for showing the current voltage of described energy-storage units.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385103.0A CN102412608B (en) | 2011-11-28 | 2011-11-28 | Charging and discharging circuit of electrical system |
| PCT/CN2012/082338 WO2013078914A1 (en) | 2011-11-28 | 2012-09-28 | Charging and discharging circuit for electrical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385103.0A CN102412608B (en) | 2011-11-28 | 2011-11-28 | Charging and discharging circuit of electrical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102412608A CN102412608A (en) | 2012-04-11 |
| CN102412608B true CN102412608B (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385103.0A Active CN102412608B (en) | 2011-11-28 | 2011-11-28 | Charging and discharging circuit of electrical system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102412608B (en) |
| WO (1) | WO2013078914A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412608B (en) * | 2011-11-28 | 2014-05-21 | 中联重科股份有限公司 | Charging and discharging circuit of electrical system |
| CN105786068B (en) * | 2016-04-12 | 2017-09-22 | 北京集创北方科技股份有限公司 | The regulation circuit and method of voltage output |
| CN106787081A (en) * | 2016-11-22 | 2017-05-31 | 中车株洲电力机车有限公司 | A kind of electric discharge device and method for electric locomotive |
| CN107394770B (en) * | 2017-08-29 | 2024-02-06 | 广州周立功单片机科技有限公司 | Power supply conditioning circuit |
| CN111497684A (en) * | 2019-01-31 | 2020-08-07 | 北京新能源汽车股份有限公司 | Power battery system, repairing method and device thereof, BMS (battery management system) and automobile |
| CN112217258A (en) * | 2020-10-25 | 2021-01-12 | 广东佳的美智能科技有限公司 | Portable power source circuit and portable power source |
| CN112731129B (en) * | 2020-12-14 | 2024-03-29 | 许昌开普检测研究院股份有限公司 | Integrated adjustable load for testing contact capacity of relay |
| CN115685824B (en) * | 2022-10-25 | 2025-04-25 | 中际联合（北京）科技股份有限公司 | Lifting equipment control system and lifting equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013078914A1 (en) | 2013-06-06 |
| CN102412608A (en) | 2012-04-11 |
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