CN105416069A - Power source used for electric vehicle - Google Patents
Power source used for electric vehicle Download PDFInfo
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- CN105416069A CN105416069A CN201510743729.2A CN201510743729A CN105416069A CN 105416069 A CN105416069 A CN 105416069A CN 201510743729 A CN201510743729 A CN 201510743729A CN 105416069 A CN105416069 A CN 105416069A
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- power supply
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- driven car
- power
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Electric Propulsion And Braking For Vehicles (AREA)
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Abstract
The invention provides a power source used for an electric vehicle. The power source comprises a high-voltage battery and a direct current converter. The direct current converter comprises a power source input anode end, a power source input cathode end, and an enable signal end used for starting the direct current converter. The anode end of the high-voltage battery is electrically connected with the power source input anode end. The cathode end of the high-voltage battery is electrically connected with the power source input cathode end. A start controlling relay is arranged between the anode end of the high-voltage battery and the enable signal end. The direct current converter comprises a direct current converting module, an equipment power supply power source output end, and a normal power source output end. The normal power source output end can still provide power for constant electric equipment under the condition that the direct current converting module does not work.
Description
Technical field
The present invention relates to automobile power source control field, particularly relate to a kind of power supply of battery-driven car.
Background technology
Battery-driven car is the complication system of multisystem composition, on pure electric vehicle, owing to not needing starter motor, does not describedly need 12V storage battery in theory.But due under dead ship condition, the starting switch, burglar alarm etc. of vehicle still need a standing 12V Power supply, in order to start other low voltage equipments on DC-DC DC converter and car.
For this demand, solution common on pure electric vehicle has two kinds.Wherein a kind of scheme as shown in Figure 1, and DC-DC DC converter often connects main battery, and its output is powered for normal electric equipment, and as starting switch etc., other low-voltage equipments are by the Control of starting switch.But the program is when battery-driven car is parked, there is potential safety hazard and the lasting electricity consuming high-tension battery in DC-DC DC converter still continuous firing.
As shown in Figure 2, the high input voltage of DC-DC DC converter is controlled by starting switch first scheme, and it exports the standing power supply of termination storage battery as starting switch.Due to the existence of storage battery, DC-DC DC converter can be allowed during storing cycle to quit work, but need to manage the process of charging of storage battery, otherwise there is potential safety hazard, therefore the circuit of practical application can be more complicated than the circuit diagram in Fig. 2, simultaneously owing to adding storage battery, wire harness installation etc. also can correspondingly complicate.
Summary of the invention
Technical matters to be solved by this invention is to provide one and possesses energy-storage function, has DC converting and can start power supply for the battery-driven car that battery-driven car provides the standing power supply required for startup, at utmost reduce again high-tension battery consumption simultaneously.
In order to solve above technical matters, a kind of power supply for battery-driven car of the present invention, comprise high-tension battery and DC converter, described DC converter comprises power supply input positive terminal, power supply input negative pole end and the enable signal end for starting DC converter, the positive terminal of described high-tension battery is electrically connected described power supply input positive terminal, the negative pole end of described high-tension battery is electrically connected described power supply input negative pole end, startup control relay is provided with between the positive terminal of described high-tension battery and described enable signal end, wherein, described DC converter comprises DC converting module, equipment power supply mouth and normality power output end, described normality power output end still can provide electric power for normal electric equipment in the out-of-run situation of described DC converting module.
Preferably, described DC converter is built-in to be provided with closed-center system and to supplement the built-in relay of the energy for controlling described closed-center system, described closed-center system in the out-of-run situation of described DC converting module for normal electric equipment provides electric power.
Preferably, the power supply input positive terminal of the corresponding described DC converter of input end difference of described DC converting module, power supply input positive terminal and enable signal end, the mouth of described DC converting module connects described equipment power supply mouth, the mouth of described DC converting module connects described normality power output end through diode D1, the anode of described diode D1 connects the mouth of described DC converting module, the cathodic electricity of described diode D1 connects described normality power output end, between described closed-center system is held with being connected across described normality power output end and vehicle body, between the coil-end of described built-in relay is held with being connected across described normality power output end and vehicle body, the tip side of described built-in relay connects between described power supply input positive terminal and enable signal end.
Preferably, the moving contact of described built-in relay connects described power supply input positive terminal, and the normally closed break back contact of described built-in relay connects described enable signal end.
Preferably, resistance R1 is provided with between the negative electrode of described diode D1 and described normality power output end.
Preferably, also voltage detection unit is provided with between the coil-end of described built-in relay and described normality power output end.
Preferably, closed-center system is electric capacity C1.
Preferably, described electric capacity C1 is super capacitor.
Preferably, the moving contact of described startup control relay connects the positive terminal of high-tension battery, and the break back contact of often opening of described startup control relay connects described enable signal end.
A kind of power supply mode of battery-driven car, comprise power supply, described power supply comprises high-tension battery and DC converter, described DC converter comprises DC converting module, equipment power supply mouth and normality power output end, wherein, described DC converter is built-in to be provided with closed-center system and to supplement the built-in relay of the energy for controlling described closed-center system, described closed-center system in the out-of-run situation of described DC converting module for normal electric equipment provides electric power.
Preferably, the power supply of described battery-driven car comprises the following steps:
A. power supply is assembled to after on battery-driven car, and along with the work of DC converting module, electric storage device starts charging until full state;
B. when in battery-driven car driving process, ignition device closes, DC converting module work, and provides electric power for the normal electric equipment of battery-driven car; Meanwhile, if it is that electric storage device charges to full power state that electric storage device electric power is discontented with nature;
C., when battery-driven car is out of service, ignition device is opened a way, DC converting module from service, and the normal electric equipment being vehicle necessity by electric storage device provides electric power, until electric storage device power shortage; During electric storage device power shortage, built-in relay closes, starts DC converting module work, charges and provide electric power for normal electric equipment for electric storage device, until electric storage device is full of, built-in relay disconnects, and continuing by electric storage device is that normal electric equipment is powered;
D. battery-driven car out of service after restart, directly by DC converting module for normal electric equipment provides electric power.
By in DC-DC DC converter built-in capacitance as closed-center system, solve the power issue of battery-driven car normality equipment, need not work when making DC-DC DC converter not be used in storing cycle always.Being undertaken controlling the supplementary energy by arranging built-in relay, avoiding DC-DC long-term work, thus avoiding the loss of high-tension battery.The charge and discharge cycles number of times of super capacitor has great raising than plumbic acid or lithium cell, there is not the problem of Charge Management simultaneously, effectively improves reliability.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is the circuit theory schematic diagram for a kind of power source design of battery-driven car startup in prior art;
Fig. 2 is the circuit theory schematic diagram for the another kind of power source design of battery-driven car startup in prior art;
Fig. 3 is the circuit theory schematic diagram of the present invention for the embodiment 1 of the power supply of battery-driven car;
Fig. 4 is the circuit theory schematic diagram of the present invention for the embodiment 2 of the power supply of battery-driven car;
Fig. 5 is the principle of work view of the present invention for the power supply of battery-driven car.
Detailed description of the invention
Embodiment 1:
As shown in Figure 3, a kind of power supply for battery-driven car of the present invention, comprise high-tension battery V and DC converter DC-DCassembly, described DC converter comprises power supply input positive terminal 1, power supply input negative pole end 3 and the enable signal end 2 for starting DC converter, the positive terminal of described high-tension battery v is electrically connected described power supply input positive terminal 1, the negative pole end of described high-tension battery is electrically connected described power supply input negative pole end 3, be provided with between the positive terminal of described high-tension battery and described enable signal end 2 and start control relay K1, wherein, described DC converter DC-DCassembly comprises DC converting module DC-DCconvertor, equipment power supply mouth 4 and normality power output end 5, described normality power output end 5 still can provide electric power for normal electric equipment in the out-of-run situation of described DC converting module DC-DCconvertor.
Described DC converter DC-DCassembly is built-in to be provided with closed-center system and to supplement the built-in relay K 2 of the energy for controlling described closed-center system, described closed-center system in the out-of-run situation of described DC converting module for normal electric equipment provides electric power, in the present embodiment, described closed-center system is electric capacity C1.Described electric capacity C1 is super capacitor, brings up to service life identical with vehicle life span or higher and does not have the problem that capacity of cell decays.
The power supply input positive terminal of the corresponding described DC converter DC-DCassembly of input end difference of described DC converting module DC-DCconvertor, power supply input positive terminal and enable signal end, the mouth of described DC converting module DC-DCconvertor connects described equipment power supply mouth 4, the mouth of described DC converting module DC-DCconvertor connects described normality power output end 5 through diode D1, the anode of described diode D1 connects the mouth of described DC converting module DC-DCconvertor, the cathodic electricity of described diode D1 connects described normality power output end 5, described electric capacity C1 holds between 6 with being connected across described normality power output end 5 and vehicle body, the coil-end of described built-in relay K 2 is held between 6 with being connected across described normality power output end 5 and vehicle body, the tip side of described built-in relay K 2 to connect between described power supply input positive terminal 1 and enable signal end 2.The moving contact of described built-in relay K 2 connects described power supply input positive terminal 1, and the normally closed break back contact end of described built-in relay K 2 connects described enable signal end.
In the present embodiment, resistance R1 is provided with between the negative electrode of described diode D1 and described normality power output end 5.
Its principle of work: as shown in Figure 5,1. new machine is assembled to after on car, and along with the work of DC-DCConvertor, electric storage device starts charging until full state; 2. when in vehicle travel process, ignition device closes, and DC-DCConvertor works, and provides electric power for the 12V equipment of vehicle.Meanwhile, if it is that electric storage device charges to full power state that electric storage device electric power is discontented with nature; 3., when vehicle is out of service, ignition device is opened a way, and DC-DCConvertor quits work, and the 12V equipment being vehicle necessity by electric storage device provides electric power, until electric storage device power shortage; During electric storage device power shortage, built-in relay closes, starts DC-DCConvertor work, charges and provide electric power for 12V equipment for electric storage device, until electric storage device is full of, built-in relay disconnects, and continuing by electric storage device is that 12V equipment is powered; 4. vehicle out of service after restart, directly by DC-DCConvertor for 12V equipment provides electric power.
In in the present embodiment, starting switch, annunciator etc. that namely the normality power output end 5 of DC converter DC-DCassembly is vehicle provide normality power supply.
Battery-driven car starting state: now the enable signal end 2 of DC converter DC-DCassembly is by high-tension control, DC converting module DC-DCConvertor is in running order, the equipment power supply mouth 4 of DC converter DC-DCassembly provides electric power for 12V equipment, and voltage is Vout; If the voltage of electric capacity C1 is lower than Vout-0.7v, then DC converting module DC-DCConvertor charges to Vc1=Vout-0.7v by diode D1 and resistance R1 to electric capacity C1.Now, whether built-in relay K 2 works and does not affect car load and power.
The mode of operation of the normality power output end 5 of battery-driven car parked state: DC converter DC-DCassembly depends on pick-up voltage Vc and the release voltage Vo of built-in relay K 2.
When electric capacity C1 is full of electricity, electric capacity C1 both end voltage Vc1 >=Vo, the adhesive of built-in relay K 2, DC converting module DC-DCconvertor is in off position, and electric capacity C1 provides electric power by normality power output end 5 to normal electric equipment;
When electric capacity C1 electric quantity consumption is to Vc1<Vo, built-in relay K 2 discharges, and the enable signal end of DC converting module DC-DCConvertor is connected to high-tension battery by built-in relay K 2, thus starts working.DC converting module DC-DCConvertor charges to Vc1=Vc by diode D1 and resistance R1 to electric capacity C1, the adhesive of built-in relay K 2, DC converting module DC-DCConvertor loses enable signal, quits work until next circulation or battery-driven car start.
When battery-driven car is parked, the 12v load of equipment power supply mouth 4 then controls by starting switch, does not work all the time.Ensure that battery-driven car has suitable startup power supply all the time at dead ship condition, again without the need to making DC converting module in running order.
Embodiment 2:
The difference of the present embodiment and above-described embodiment 1 is, is also provided with voltage detection unit U1 between the coil-end of described built-in relay K 2 and described normality power output end 5.
The principle of work of the present embodiment:
Starting switch, annunciator etc. that the normality power output end 5 of DC converter DC-DCassembly is vehicle provide normality power supply.
Battery-driven car starting state: now the enable signal end 2 of DC converter DC-DCassembly is by high-tension control, DC converting module DC-DCConvertor is in running order, the equipment power supply mouth 4 of DC converter DC-DCassembly provides electric power for 12V equipment, and voltage is Vout; If the voltage of electric capacity C1 is lower than the minimum operating voltage Vout-0.7v of setting, then DC converting module DC-DCConvertor charges to Vc1=Vout-0.7v by diode D1 and resistance R1 to electric capacity C1.Now, whether built-in relay K 2 works and does not affect car load and power.
Whether the mode of operation of the normality power output end 5 of battery-driven car parked state: DC converter DC-DCassembly depends on the adhesive of built-in relay K 2.
Electric capacity C1 energy shortage when the voltage detecting end Vd voltage supposing voltage detection unit U1 is Vdmin, during Vdmax, electric capacity C1 can keep work.Vout-0.7v>Vdmax>VdminGreatT. the minimum operating voltage of GreaT.GT voltage detection unit.
When electric capacity C1 is full of electricity, electric capacity C1 both end voltage Vc1 >=Vdmin, voltage detection unit output low level, built-in relay K 2 disconnects, DC converting module DC-DCconvertor is in off position, and electric capacity C1 provides electric power by normality power output end 5 to normal electric equipment;
When electric capacity C1 electric quantity consumption is to Vc1<Vdmin, voltage detection unit exports high level, built-in relay K 2 closes, and the enable signal end of DC converting module DC-DCConvertor is connected to high-tension battery by built-in relay K 2, thus starts working.DC converting module DC-DCConvertor charges to Vc1=Vdmax by diode D1 and resistance R1 to electric capacity C1, voltage detection unit output low level, built-in relay K 2 disconnects, and DC-DCConvertor loses enable signal, quits work until next circulation or vehicle launch.
When battery-driven car is parked, the 12v load of equipment power supply mouth 4 then controls by starting switch, does not work all the time.Ensure that battery-driven car has suitable startup power supply all the time at dead ship condition, again without the need to making DC converting module in running order.
By in DC-DC DC converter built-in capacitance as closed-center system, solve the power issue of battery-driven car normality equipment, need not work when making DC-DC DC converter not be used in storing cycle always.Being undertaken controlling the supplementary energy by arranging built-in relay, avoiding DC-DC long-term work, thus avoiding the loss of high-tension battery.The charge and discharge cycles number of times of super capacitor has great raising than plumbic acid or lithium cell, there is not the problem of Charge Management simultaneously, effectively improves reliability.
It is emphasized that protection scope of the present invention is including but not limited to above-mentioned detailed description of the invention.It should be pointed out that for a person skilled in the art, under the premise without departing from the principles of the invention, can also make some distortion and improvement, these also should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. the power supply for battery-driven car, comprise high-tension battery and DC converter, described DC converter comprises power supply input positive terminal, power supply input negative pole end and the enable signal end for starting DC converter, the positive terminal of described high-tension battery is electrically connected described power supply input positive terminal, the negative pole end of described high-tension battery is electrically connected described power supply input negative pole end, startup control relay is provided with between the positive terminal of described high-tension battery and described enable signal end, it is characterized in that, described DC converter comprises DC converting module, equipment power supply mouth and normality power output end, described normality power output end still can provide electric power for normal electric equipment in the out-of-run situation of described DC converting module.
2. want the power supply for battery-driven car described in 1 according to right, it is characterized in that, described DC converter is built-in to be provided with closed-center system and to supplement the built-in relay of the energy for controlling described closed-center system, described closed-center system in the out-of-run situation of described DC converting module for normal electric equipment provides electric power.
3. the power supply for battery-driven car according to claim 2, it is characterized in that, the power supply input positive terminal of the corresponding described DC converter of input end difference of described DC converting module, power supply input positive terminal and enable signal end, the mouth of described DC converting module connects described equipment power supply mouth, the mouth of described DC converting module connects described normality power output end through diode D1, the anode of described diode D1 connects the mouth of described DC converting module, the cathodic electricity of described diode D1 connects described normality power output end, between described closed-center system is held with being connected across described normality power output end and vehicle body, between the coil-end of described built-in relay is held with being connected across described normality power output end and vehicle body, the tip side of described built-in relay connects between described power supply input positive terminal and enable signal end.
4. the power supply for battery-driven car according to claim 3, is characterized in that, the moving contact of described built-in relay connects described power supply input positive terminal, and the normally closed break back contact of described built-in relay connects described enable signal end.
5. the power supply for battery-driven car according to claim 3, is characterized in that, is provided with resistance R1 between the negative electrode of described diode D1 and described normality power output end.
6. the power supply for battery-driven car according to claim 3, is characterized in that, is also provided with voltage detection unit between the coil-end of described built-in relay and described normality power output end.
7. the power supply for battery-driven car according to claim 2, is characterized in that, closed-center system is electric capacity C1, and described electric capacity C1 is super capacitor.
8. the power supply for battery-driven car according to claim 1, is characterized in that, the moving contact of described startup control relay connects the positive terminal of high-tension battery, and the break back contact of often opening of described startup control relay connects described enable signal end.
9. the power supply mode of a battery-driven car, comprise power supply, described power supply comprises high-tension battery and DC converter, described DC converter comprises DC converting module, equipment power supply mouth and normality power output end, it is characterized in that, described DC converter is built-in to be provided with closed-center system and to supplement the built-in relay of the energy for controlling described closed-center system, described closed-center system in the out-of-run situation of described DC converting module for normal electric equipment provides electric power.
10. the power supply mode of battery-driven car according to claim 9, is characterized in that, the power supply of described battery-driven car comprises the following steps:
A. power supply is assembled to after on battery-driven car, and along with the work of DC converting module, electric storage device starts charging until full state;
B. when in battery-driven car driving process, ignition device closes, DC converting module work, and provides electric power for the normal electric equipment of battery-driven car; Meanwhile, if it is that electric storage device charges to full power state that electric storage device electric power is discontented with nature;
C., when battery-driven car is out of service, ignition device is opened a way, DC converting module from service, and the normal electric equipment being vehicle necessity by electric storage device provides electric power, until electric storage device power shortage; During electric storage device power shortage, built-in relay closes, starts DC converting module work, charges and provide electric power for normal electric equipment for electric storage device, until electric storage device is full of, built-in relay disconnects, and continuing by electric storage device is that normal electric equipment is powered;
D. battery-driven car out of service after restart, directly by DC converting module for normal electric equipment provides electric power.
Priority Applications (1)
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| CN201510743729.2A CN105416069B (en) | 2015-11-05 | 2015-11-05 | A kind of power supply for electric car |
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| CN201510743729.2A CN105416069B (en) | 2015-11-05 | 2015-11-05 | A kind of power supply for electric car |
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| CN105416069A true CN105416069A (en) | 2016-03-23 |
| CN105416069B CN105416069B (en) | 2017-09-26 |
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| CN105416069B (en) | 2017-09-26 |
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