CN102570511B - Double-battery electric power system and control method - Google Patents
Double-battery electric power system and control method Download PDFInfo
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- CN102570511B CN102570511B CN201010576529.XA CN201010576529A CN102570511B CN 102570511 B CN102570511 B CN 102570511B CN 201010576529 A CN201010576529 A CN 201010576529A CN 102570511 B CN102570511 B CN 102570511B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
A kind of double-battery electric power system, comprise the secondary energy-storage units of the AC/DC converter alternating voltage that an external power source provides being converted to direct voltage, the main energy-storage units of power supply one basic load, a DC-DC converter, a power supply one secondary load, and a controller.The direct voltage that main energy-storage units utilizes AC/DC converter to export charges.DC-DC converter is, according to the activation running of a control signal, the direct voltage that AC/DC converter or main energy-storage units export is converted to another direct voltage, and charge secondary energy-storage units according to this.Controller is the residual electricity of the secondary energy-storage units of detecting, and to detect AC/DC converter be in idle state or active state, provides control signal according to this.
Description
Technical field
The present invention relates to a kind of battery power supply system and control method, particularly relate to a kind of double-battery electric power system and control method of tool adaptability charging mechanism.
Background technology
Along with the development of science and technology and the requirement of green energy resource, motor vehicle (ElectricVehicle) is gradually introduced into vehicle market to replace the motor vehicle that tradition uses oil.Generally speaking, power device in motor vehicle, except electro-motor, still there are head lamp, taillight, indicator, parking indicator light, loudspeaker and built-in sound equipment etc., and the battery module in motor vehicle, usually using lithium ion battery as main energy-storage units, lead-acid battery is as secondary energy-storage units.So if the power supply running of battery module and refresh operations do not allocate control adaptively, then the specified stored energy capacitance of lithium ion battery and lead-acid battery just cannot do and the most effectively use.
Summary of the invention
The object of the present invention is to provide a kind of double-battery electric power system of tool adaptability charging mechanism, power to a basic load and a secondary load.
Double-battery electric power system of the present invention comprises the secondary energy-storage units that DC-DC converter, that main energy-storage units, that an AC/DC converter, is electrically connected on AC/DC converter is electrically connected on AC/DC converter and main energy-storage units is electrically connected on DC-DC converter, and the controller that is electrically connected on DC-DC converter, AC/DC converter, main energy-storage units and secondary energy-storage units.
The alternating voltage that one external power source provides by AC/DC converter is converted to one first direct voltage.
Main energy-storage units is that power supply is to basic load.When external power source AC/DC converter, the first direct voltage that main energy-storage units utilizes AC/DC converter to export charges.
DC-DC converter is, according to the activation running of a control signal, the first direct voltage is converted to one second direct voltage.
Secondary energy-storage units is that power supply is to secondary load.When the first direct voltage is converted to the second direct voltage according to the activation running of control signal by DC-DC converter, the second direct voltage that secondary energy-storage units utilizes DC-DC converter to export charges.
Controller is the detecting residual electricity of secondary energy-storage units and the residual electricity of main energy-storage units, and to detect AC/DC converter be in an idle state or an active state, provides control signal according to this.
Another object of the present invention is to the Double-battery powered control method that a kind of tool adaptability charging mechanism is provided.
Double-battery powered control method of the present invention comprises: detecting AC/DC converter is in an idle state or an active state, produces one first detecting result according to this; Detect the residual electricity of secondary energy-storage units to produce one second detecting result; And detect result to determine whether want activation DC-DC converter according to the first detecting result and second, utilize the residual electricity of the electric energy of an external power source or main energy-storage units to the secondary energy-storage units that charges according to this.
Beneficial effect of the present invention is, the residual electricity of secondary energy-storage units is detected by controller, and to detect AC/DC converter be in idle state or active state, the transition operation of controller adaptability ground activation/forbidden energy DC-DC converter, be used for controlling refresh operations, and then control to operate the power supply of basic load and secondary load, the specified stored energy capacitance of secondary energy-storage units and main energy-storage units is done the most effectively use according to this, therefore really can reach object of the present invention.
Accompanying drawing explanation
Fig. 1 is a function block schematic diagram, illustrates that the preferred embodiment of double-battery electric power system of the present invention is in external charge pattern;
Fig. 2 is a function block schematic diagram, illustrates that the preferred embodiment of double-battery electric power system of the present invention is in charge mode voluntarily;
Fig. 3 is a flow chart, and the preferred embodiment of above-mentioned Double-battery powered control method is described;
Fig. 4 is a time diagram, illustrates that Double-battery powered method of the present invention is in the power supply state of external charge pattern;
Fig. 5 is a time diagram, illustrates that Double-battery powered method of the present invention is in the power supply state of charge mode voluntarily.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Consult Fig. 1, the preferred embodiment of double-battery electric power system 100 of the present invention comprises the secondary energy-storage units 140 that DC-DC converter 130, that main energy-storage units 120, that an AC/DC converter 110, is electrically connected on AC/DC converter 110 is electrically connected on AC/DC converter 110 is electrically connected on DC-DC converter 130, and the controller 150 that is electrically connected on DC-DC converter 130, AC/DC converter 110, main energy-storage units 120 and secondary energy-storage units 140.Double-battery electric power system 100 can be powered to basic load 160 and a secondary load 170.
Main energy-storage units 120 comprises at least one lithium ion battery.Secondary energy-storage units 140 comprises at least one lead-acid battery.If double-battery electric power system 100 is installed in a motor vehicle, then basic load 160 comprises the electro-motor that is used for being with motor vehicle, and secondary load 170 comprises at least one head lamp, at least one taillight, at least one indicator, at least one parking indicator light, and the power device such as loudspeaker.
AC/DC converter 110 is used to the alternating voltage that an external power source 180 provides to be converted to one first direct voltage Vdc1.Main energy-storage units 120 is used to basic load 160 of powering.When external power source 180 supply and AC/direct current transducer 110, the first direct voltage Vdc1 that main energy-storage units 120 utilizes AC/DC converter 110 to export charges.
DC-DC converter 130 is used to, according to the activation running of a control signal Sc, the first direct voltage Vdc1 is converted to one second direct voltage Vdc2.Or DC-DC converter 130 operates to stop performing voltage transitions according to the forbidden energy (Disable) of control signal Sc.
Secondary energy-storage units 140 is used to secondary load 170 of powering.When the first direct voltage Vdc1 is converted to the second direct voltage Vdc2 according to the activation running of control signal Sc by DC-DC converter 130, the second direct voltage Vdc2 that secondary energy-storage units 140 utilizes DC-DC converter 130 to export charges.
Controller 150 is used to detect the residual electricity of main energy-storage units 120 and the residual electricity of secondary energy-storage units 140, and to detect AC/DC converter 110 be in an active state or an idle state, there is provided control signal Sc according to this, active state just can be judged as " external charge pattern " as Fig. 1, and idle state just can be judged as " voluntarily charge mode " as Fig. 2.
If Fig. 1 is " external charge pattern ", if the residual electricity that secondary energy-storage units 140 detected by controller 150 is less than one first charge threshold level, then controller 150 provides the control signal Sc of tool enabled status with activation DC-DC converter 130, first direct voltage Vdc1 is converted to the second direct voltage Vdc2, and charge secondary energy-storage units 140 according to this.
When AC/DC converter 110 is in active state, if the residual electricity that secondary energy-storage units 140 detected by controller 150 is greater than one first and stops filling critical value, then controller 150 provides the control signal Sc of tool disabled state with forbidden energy DC-DC converter 130, stop the secondary energy-storage units 140 of charging according to this, secondary energy-storage units 140 so can be avoided to overcharge phenomenon and detract its useful life.
Consult Fig. 2, under " voluntarily charge mode ", if the residual electricity that main energy-storage units 120 detected by controller 150 is greater than exempt to fill critical value, and the residual electricity of secondary energy-storage units 140 is less than one second charge threshold level, then controller 150 provides the control signal Sc of tool enabled status with activation DC-DC converter 130, the VD main energy-storage units 120 being about the first direct voltage Vdc1 is converted to the second direct voltage Vdc2, and charge secondary energy-storage units 140 according to this.
When AC/DC converter 110 is in idle state, if the residual electricity that main energy-storage units 120 detected by controller 150 is less than exempt to fill critical value, then controller 150 provides the control signal Sc of tool disabled state with forbidden energy DC-DC converter 130, according to this stop charging secondary energy-storage units 140, so the residual electricity of main energy-storage units 120 all can be used for power basic load 160.
When AC/DC converter 110 is in idle state, if the residual electricity that secondary energy-storage units 140 detected by controller 150 is greater than one second and stops filling critical value, then controller 150 provides the control signal Sc of tool disabled state with forbidden energy DC-DC converter 130, stop the secondary energy-storage units 140 of charging according to this, secondary energy-storage units 140 so can be avoided to overcharge phenomenon and detract its useful life.
Exempt to fill the one first preset percentage value that critical value is the specified stored energy capacitance corresponding to main energy-storage units 120, the present embodiment is 10%, and the dump power representing main energy-storage units 120 itself is not enough, does not therefore power to charge to secondary energy-storage units 140.
The first/the second charge threshold level is one second preset percentage value of the specified stored energy capacitance of the secondary energy-storage units 140 corresponding respectively to " external charge pattern "/" voluntarily charge mode ", the present embodiment is respectively 95% and 50%, should be noted, if second charge threshold level 50% of the present embodiment is lower than the first charge threshold level 95%, namely under " voluntarily charge mode ", if the residual electricity of secondary energy-storage units 140 enough just need not charge, main energy-storage units 120 so can be avoided to consume too much supply of electric power to secondary energy-storage units 140.
The first/the second stops filling one the 3rd preset percentage value higher than the second preset percentage value that critical value is the specified stored energy capacitance of the secondary energy-storage units 140 corresponding to " external charge pattern "/" voluntarily charge mode ", the present embodiment is respectively 100% and 70%, should be noted, stop filling critical value 100% lower than first as second of the present embodiment stops filling critical value 70%, namely under " voluntarily charge mode ", the residual electricity that secondary energy-storage units 140 charges to a certain degree just need not be full of again, main energy-storage units 120 so can be avoided to consume too much supply of electric power to secondary energy-storage units 140, first preset percentage value, the second preset percentage value and the 3rd preset percentage value can be default value or user's set point again, not with numerical value that the present embodiment is carried for restriction.
Consult Fig. 3, the preferred embodiment of the method for controlling power supply of double-battery electric power system 100 of the present invention is described as follows by flow process 200.
After power-supply controller 150 (step S210), controller 150 is detected AC/DC converter 110 and whether is in active state (step S215); Be judged as when AC/DC converter 110 is in active state " external charge pattern "; Be judged as " voluntarily charge mode " when AC/DC converter 110 is in idle state.
Coordinate Fig. 1 and Fig. 4, under external charge mode, whether the residual electricity that secondary energy-storage units 140 detected by controller 150 is less than the first charge threshold level (step S220), and the present embodiment is 95%; If the residual electricity of secondary energy-storage units 140 is less than the first charge threshold level, then activation DC-DC converter 130 utilizes the electric energy of external power source 180 with secondary energy-storage units 140 (step S225) of charging, otherwise forbidden energy DC-DC converter 130 is to stop secondary energy-storage units 140 (step S295) of charging.After activation DC-DC converter 130 is with the secondary energy-storage units 140 that charges, whether the residual electricity that secondary energy-storage units 140 detected by controller 150 is greater than first is stopped filling critical value (step S230), and the present embodiment is 100%; Stop filling critical value if the residual electricity of secondary energy-storage units 140 is greater than first, then forbidden energy DC-DC converter 130 is to stop secondary energy-storage units 140 (step S295) of charging, otherwise continues to utilize the electric energy of external power source 180 with secondary energy-storage units 140 (step S225) of charging.
Coordinate Fig. 2 and Fig. 5, under charge mode voluntarily, AC/DC converter 110 does not act on, and whether the residual electricity that main energy-storage units 120 detected by controller 150 is greater than is exempted to fill critical value (step S250), and the present embodiment is 10%; If the residual electricity of main energy-storage units 120 is not more than exempt to fill critical value, then forbidden energy DC-DC converter 130 is to stop secondary energy-storage units 140 (step S295) of charging.When the residual electricity of main energy-storage units 120 be greater than exempt to fill critical value time, whether the residual electricity that secondary energy-storage units 140 detected by controller 150 is less than the second charge threshold level (step S255); If the residual electricity of secondary energy-storage units 140 is less than the second charge threshold level, be 50% at the present embodiment, then activation DC-DC converter 130 utilizes the residual electricity of main energy-storage units 120 with secondary energy-storage units 140 (step S260) of charging, otherwise forbidden energy DC-DC converter 130 is to stop secondary energy-storage units 140 (step S295) of charging.
After activation DC-DC converter 130 utilizes the residual electricity of main energy-storage units 120 with the secondary energy-storage units 140 that charges, whether the residual electricity that secondary energy-storage units 140 detected by controller 150 is greater than second is stopped filling critical value (step S265), be 70% at the present embodiment, and whether the residual electricity detecting main energy-storage units 120 is greater than and exempt to fill critical value (step S270); If the residual electricity of secondary energy-storage units 140 is greater than the second residual electricity stopping filling critical value or main energy-storage units 120 and is not more than and exempts to fill critical value, then forbidden energy DC-DC converter 130 is to stop secondary energy-storage units 140 (step S295) of charging, otherwise continues to utilize the residual electricity of main energy-storage units 120 with secondary energy-storage units 140 (step S260) of charging.
In sum, in the running of double-battery electric power system 100 of the present invention, the residual electricity of secondary energy-storage units 140 and the residual electricity of main energy-storage units 120 is detected by controller 150, and to detect AC/DC converter 110 be in idle state or active state, the transition operation of controller 150 adaptability ground activation/forbidden energy DC-DC converter 130, be used for controlling refresh operations, and then control to operate the power supply of basic load 160 with secondary load 170, according to this secondary energy-storage units 140 is done with the residual electricity of main energy-storage units 120 and the most effectively use, therefore really can reach object of the present invention.
Claims (12)
1. a double-battery electric power system, is to supply power to a basic load and a secondary load, it is characterized in that: double-battery electric power system comprises:
One AC/DC converter, the alternating voltage provided by an external power source is converted to one first direct voltage;
One main energy-storage units, be electrically connected on AC/DC converter, main energy-storage units is powered to basic load, and wherein when external power source AC/DC converter, the first direct voltage that main energy-storage units utilizes AC/DC converter to export charges;
One DC-DC converter, is electrically connected on AC/DC converter and main energy-storage units, and DC-DC converter is, according to the activation running of a control signal, the first direct voltage is converted to one second direct voltage;
One secondary energy-storage units, be variety classes with this main energy-storage units, be electrically connected on DC-DC converter, secondary energy-storage units is that power supply is to secondary load, wherein when the first direct voltage is converted to the second direct voltage according to the activation running of control signal by DC-DC converter, the second direct voltage that secondary energy-storage units utilizes DC-DC converter to export charges;
One controller, be electrically connected on DC-DC converter, AC/DC converter, main energy-storage units and secondary energy-storage units, the residual electricity of secondary energy-storage units detected by controller, and to detect AC/DC converter be in an idle state or an active state, provides control signal according to this; And when AC/DC converter is when being in idle state, if the residual electricity that main energy-storage units detected by controller is greater than exempt to fill critical value, and the residual electricity of secondary energy-storage units is less than one second charge threshold level, then controller provides the control signal of tool enabled status with activation DC-DC converter, the VD main energy-storage units being about the first direct voltage is converted to the second direct voltage, and charge secondary energy-storage units according to this;
Wherein, exempt to fill the one first preset percentage value that critical value is the specified stored energy capacitance corresponding to main energy-storage units, represent when AC/DC converter is when being in idle state, the dump power of main energy-storage units itself is not enough, does not therefore power to charge to secondary energy-storage units; Second charge threshold level is one second preset percentage value of the specified stored energy capacitance corresponding to secondary energy-storage units, represents when AC/DC converter is when being in idle state, if the residual electricity of secondary energy-storage units is enough just without the need to charging.
2. double-battery electric power system as claimed in claim 1, it is characterized in that: if the residual electricity that main energy-storage units detected by controller is less than exempt to fill critical value, then controller provides the control signal of tool disabled state with forbidden energy DC-DC converter, stops the secondary energy-storage units of charging according to this.
3. double-battery electric power system as claimed in claim 1, it is characterized in that: stop filling critical value if the residual electricity that secondary energy-storage units detected by controller is greater than one second, then controller provides the control signal of tool disabled state with forbidden energy DC-DC converter, stops the secondary energy-storage units of charging according to this; Wherein, second stops filling one the 3rd preset percentage value higher than this second preset percentage value of secondary energy-storage units when AC/DC converter is in idle state that critical value is the specified stored energy capacitance corresponding to secondary energy-storage units, represent when AC/DC converter is when being in idle state, the residual electricity that secondary energy-storage units charges to a certain degree just need not be full of again, and secondary energy-storage units is given in the supply of electric power avoiding main energy-storage units consumption too much.
4. double-battery electric power system as claimed in claim 3, it is characterized in that: when AC/DC converter is when being in active state, if the residual electricity that secondary energy-storage units detected by controller is less than one first charge threshold level, then controller provides the control signal of tool enabled status with activation DC-DC converter, first direct voltage is converted to the second direct voltage, and charge secondary energy-storage units according to this; Wherein, first charge threshold level is another the second preset percentage value of the specified stored energy capacitance corresponding to secondary energy-storage units, represent when AC/DC converter is when being in active state, utilize the electric energy of external power source fully to charge to secondary energy-storage units, the second charge threshold level is lower than the first charge threshold level.
5. double-battery electric power system as claimed in claim 4, it is characterized in that: stop filling critical value if the residual electricity that secondary energy-storage units detected by controller is greater than one first, then controller provides the control signal of tool disabled state with forbidden energy DC-DC converter, stops the secondary energy-storage units of charging according to this; Wherein, first stops filling another the 3rd preset percentage value higher than this another the second preset percentage value of secondary energy-storage units when AC/DC converter is in active state that critical value is the specified stored energy capacitance corresponding to secondary energy-storage units, represent when AC/DC converter is when being in active state, avoid secondary energy-storage units to overcharge phenomenon and its useful life that detracts, this second stops filling critical value and first stops filling critical value lower than this.
6. double-battery electric power system as claimed in claim 1, is characterized in that: main energy-storage units comprises a lithium ion battery.
7. double-battery electric power system as claimed in claim 1, wherein, secondary energy-storage units comprises a lead-acid battery.
8. the control method of a double-battery electric power system, the controller that this double-battery electric power system comprises energy energy storage device and is electrically connected with energy energy storage device, energy energy storage device comprise a main energy-storage units, one and this main energy-storage units be different types of secondary energy-storage units, an AC/DC converter and a DC-DC converter, it is characterized in that: described control method comprises:
A () detecting AC/DC converter is in an idle state or an active state, produce one first detecting result according to this;
B () detects the residual electricity of secondary energy-storage units to produce one second detecting result;
C () detects the residual electricity of main energy-storage units to produce one the 3rd detecting result;
D () detects result to determine whether want activation DC-DC converter according to the first detecting result, the second detecting result and the 3rd, utilize the residual electricity of the electric energy of an external power source or main energy-storage units to the secondary energy-storage units that charges according to this; And
(f) when AC/DC converter be when being in idle state, if the residual electricity of main energy-storage units is greater than exempt to fill critical value, and the residual electricity of secondary energy-storage units is less than one second charge threshold level, then activation DC-DC converter utilizes the residual electricity of main energy-storage units with the secondary energy-storage units that charges;
Wherein, exempt to fill the one first preset percentage value that critical value is the specified stored energy capacitance corresponding to main energy-storage units, represent when AC/DC converter is when being in idle state, the dump power of main energy-storage units itself is not enough, does not therefore power to charge to secondary energy-storage units; Second charge threshold level is one second preset percentage value of the specified stored energy capacitance corresponding to secondary energy-storage units, represents when AC/DC converter is when being in idle state, if the residual electricity of secondary energy-storage units is enough just without the need to charging.
9. the control method of double-battery electric power system as claimed in claim 8, is characterized in that: if the residual electricity of main energy-storage units is less than exempt to fill critical value, then forbidden energy DC-DC converter is to stop the secondary energy-storage units that charges.
10. the control method of double-battery electric power system as claimed in claim 8, it is characterized in that: stop filling critical value if the residual electricity of secondary energy-storage units is greater than one first, then forbidden energy DC-DC converter is to stop the secondary energy-storage units that charges, wherein, second stops filling one the 3rd preset percentage value higher than this second preset percentage value of secondary energy-storage units when AC/DC converter is in idle state that critical value is the specified stored energy capacitance corresponding to secondary energy-storage units, represent when AC/DC converter is when being in idle state, the residual electricity that secondary energy-storage units charges to a certain degree just need not be full of again, secondary energy-storage units is given in the supply of electric power avoiding main energy-storage units consumption too much.
The control method of 11. double-battery electric power systems as claimed in claim 10, it is characterized in that: when AC/DC converter is when being in active state, if the residual electricity of secondary energy-storage units is less than one first charge threshold level, then activation DC-DC converter utilizes the electric energy of external power source to the secondary energy-storage units that charges, wherein, first charge threshold level is another the second preset percentage value of the specified stored energy capacitance corresponding to secondary energy-storage units, represent when AC/DC converter is when being in active state, the electric energy of external power source is utilized fully to charge to secondary energy-storage units, this second charge threshold level is lower than this first charge threshold level.
The control method of 12. double-battery electric power systems as claimed in claim 11, it is characterized in that: stop filling critical value if the residual electricity of secondary energy-storage units is greater than one first, then forbidden energy DC-DC converter is to stop the secondary energy-storage units that charges, wherein, first stops filling another the 3rd preset percentage value higher than this another the second preset percentage value of secondary energy-storage units when AC/DC converter is in active state that critical value is the specified stored energy capacitance corresponding to secondary energy-storage units, represent when AC/DC converter is when being in active state, secondary energy-storage units is avoided to overcharge phenomenon and its useful life that detracts, this second stops filling critical value and first stops filling critical value lower than this.
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| CN103029593B (en) * | 2012-11-05 | 2015-10-28 | 荣成华泰汽车有限公司 | The method for controlling power supply of power system of electric automobile and device and electric supply installation |
| CN104300648B (en) * | 2014-11-04 | 2016-09-14 | 徐叶 | A kind of electric motor car operation control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2395376A (en) * | 2002-09-20 | 2004-05-19 | Kigass Electronics Ltd | Energy management |
| CN101612898A (en) * | 2008-06-23 | 2009-12-30 | 叶进华 | Double-battery mutually-rechargeable electric automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2395376A (en) * | 2002-09-20 | 2004-05-19 | Kigass Electronics Ltd | Energy management |
| CN101612898A (en) * | 2008-06-23 | 2009-12-30 | 叶进华 | Double-battery mutually-rechargeable electric automobile |
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