CN104767230A - Method and system controlling power to low-voltage power supply - Google Patents
Method and system controlling power to low-voltage power supply Download PDFInfo
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- CN104767230A CN104767230A CN201410007593.4A CN201410007593A CN104767230A CN 104767230 A CN104767230 A CN 104767230A CN 201410007593 A CN201410007593 A CN 201410007593A CN 104767230 A CN104767230 A CN 104767230A
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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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- 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
- Y02T10/72—Electric energy management in electromobility
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Abstract
The invention provides a method controlling power to a low-voltage power supply. The low-voltage power supply is electrically connected with a high-voltage power supply via a DC/DC converter. The method comprises that output levels of the DC/DC converter are set in advance; the lowest threshold and the highest threshold of characteristic power parameters of the power state of the low-voltage power supply are set in advance; the power parameters of the low-voltage power supply are detected; and the detected power parameters are compared with the lowest threshold and the highest threshold, and output of the DC/DC converter is determined according to a comparison result. A corresponding system is also provided. According to the method, power from the DC/DC converter to the low-voltage power supply is variable.
Description
Technical field
The present invention relates to automotive engineering, more specifically, relate to the electric power networks technology in hybrid-electric car, plug-in hybrid-electric car and pure electric automobile
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Background technology
In hybrid-electric car, plug-in hybrid-electric car and pure electric automobile, electric power networks is divided into high-pressure section and low-pressure section.
Fig. 1 illustrates electric power networks conventional in vehicle.As shown in the figure, this electric power networks comprises high-tension battery 10, the plug-in charger 11 be electrically connected with high-tension battery 10, A-battery 20, by the DC/DC transducer 21 that high-tension battery 10 is electrically connected with A-battery 20, and the full-vehicle control unit 30 be electrically connected with high-tension battery 10.High-tension battery 10 connects external charging machine with electric energy supplement by plug-in charger 11.When needed, high-tension battery 10 is charged to A-battery 10 by DC/DC transducer 21.Except charging to A-battery 20 so that its Low-voltage Electronic power electrical apparatus to vehicle, high-tension battery 10 also as required electric energy transmitting to the power set of vehicle.As shown in the figure, internal combustion engine 40 is connected with startup/power generation all-in-one machine 42 by mechanical clutch 41, and gearbox 44 is connected with startup/power generation all-in-one machine 43 by mechanical clutch 43, and high-tension battery 10 is electrically connected with startup/power generation all-in-one machine 43 by main contactor 45.The supply of energy between A-battery and startup/power generation all-in-one machine 43 of high-tension battery 10 is managed by full-vehicle control unit 30.
In prior art, DC/DC transducer 21 is all pre-set and remain unchanged in vehicle operation to the output of A-battery 20.
Summary of the invention
The invention provides a kind of method of the electric power for controlling to low-tension supply, adaptive adjustment can be carried out to DC/DC transducer 21 to the output of A-battery 20.
The method of the electric power for controlling to low-tension supply of the present invention, this low-tension supply is electrically connected with high voltage source by DC-DC converter, and described method comprises: the multiple output stages pre-setting described DC-DC converter; The minimum threshold pre-setting the parameters of electric power characterizing low-tension supply power state and most high threshold; Detect the parameters of electric power of low-tension supply; Detected parameters of electric power is compared with described most high threshold, minimum threshold, and determines the output of described DC-DC converter according to comparative result.
Preferably, the method also comprises and detects the parameters of electric power of high voltage source, and when the parameters of electric power of described high voltage source is low, reduces described minimum threshold and most high threshold.
Preferably, in the method, describedly determine that the output of described DC-DC converter comprises according to comparative result: if the parameters of electric power detected is described most between high threshold and described minimum threshold, then the optimum that the output of described DC-DC converter is set in described output stage exports; If the parameters of electric power detected is more than described most high threshold, then the output of described DC-DC converter is set to the minimum output in output stage; If the parameters of electric power detected is below described minimum threshold, then the output of described DC-DC converter is set to the highest output in output stage.
Preferably, in the method, described parameters of electric power is charge/discharge current or state-of-charge.Preferably, the method is applied in hybrid vehicle, plug-in hybrid-power automobile or pure electric automobile, and described method also comprises: receive the vehicle driving state information from full-vehicle control unit; And described detected parameters of electric power to be compared with described most high threshold, minimum threshold, and determine that the output of described DC-DC converter comprises according to comparative result: detected parameters of electric power is compared with described most high threshold, minimum threshold, and foundation comparative result and described vehicle driving state information determine the output of described DC-DC converter.
The present invention also provides a kind of system of the electric power for controlling to low-tension supply, low-tension supply is electrically connected by DC-DC converter high voltage source, described system comprises: arrange interface, for pre-setting multiple output stages of described DC-DC converter, and the minimum threshold pre-setting the parameters of electric power characterizing low-tension supply power state and most high threshold; Detecting unit, it is configured to the parameters of electric power detecting low-tension supply, and testing result is transferred to comparing unit; Comparing unit, it is configured to testing result to compare with most high threshold with the minimum threshold pre-set, and comparative result is transferred to control unit; Control unit, it is configured to the output determining described DC-DC converter according to comparative result.
Preferably, in this system, described control unit is configured to: if the parameters of electric power detected is described most between high threshold and described minimum threshold, then the optimum output of described DC-DC converter be set in described output stage exports; If the output of described DC-DC converter more than described most high threshold, is then set to the minimum output in output stage by the parameters of electric power detected; If the parameters of electric power detected is below described minimum threshold, then the output of described DC-DC converter is set to the highest output in output stage.
Preferably, this system is applied in hybrid vehicle, plug-in hybrid-power automobile or pure electric automobile, and described control unit is configured to according to comparative result and the output determining described DC-DC converter according to the vehicle driving state information from entire car controller.Preferably, described detecting unit is battery condition sensor, and described comparing unit and described control unit are set to a part for full-vehicle control unit.
The present invention also provides a kind of electric power networks be applied in hybrid vehicle, plug-in hybrid-power automobile or pure electric automobile, it comprises high voltage source, low-tension supply, the DC-DC converter that high voltage source is electrically connected with low-tension supply, wherein, described electric power networks also comprises the system of the electric power for controlling to low-tension supply as described above.
Perform method of the present invention and/or adopt system of the present invention, can according to the output of the actual power state adjustment DC-DC converter of low-tension supply.
Accompanying drawing explanation
Fig. 1 illustrates electric power networks conventional in vehicle.
Fig. 2 is the flow chart of the method for the electric power for controlling to low-tension supply according to an example of the present invention.
Fig. 3 illustrates the structure of the system of the electric power for controlling to low-tension supply.
Fig. 4 is the electric power networks in the vehicle of the system that have employed the electric power for controlling to low-tension supply shown in Fig. 3.
Embodiment
Describe schematic example of the present invention referring now to accompanying drawing, identical drawing reference numeral represents identical element.Each embodiment described below contributes to those skilled in the art and thoroughly understands the present invention, and is intended to example and unrestricted.In figure, the diagram of each element, parts, unit, device is not necessarily drawn in proportion, only illustrate schematicallys the relativeness between these elements, parts, module, device.
The method controlling to the electric power of low-tension supply according to the present invention can such as be applied in the applied environment shown in Fig. 1, but not as limit.Fig. 2 is the flow chart of the method for the electric power for controlling to low-tension supply according to an example of the present invention.Existing composition graphs 1 sets forth the method shown in Fig. 2.
In step 20, pre-set multiple output stages of described DC-DC converter (hereinafter referred to as DC/DC transducer).The high-tension current of high voltage source 10 can be converted to low-tension current by DC/DC transducer 21, outputs to A-battery 20.Pre-set the output stage of DC/DC transducer 21, make it can have different output voltages.In this example, the output of DC/DC transducer 21 is set to minimum output stage, optimum output stage and the highest output stage three.Exemplarily, the output valve of minimum output is about 10.6V, and the output valve of the highest output is about 16V, and the optimum output valve exported is about 14V.In example of the present invention, A-battery and the equal example of high-tension battery and be storage battery without limitation.
In step 22, the minimum threshold pre-setting the parameters of electric power characterizing low-tension supply power condition and most high threshold.Low-tension supply 20 is charged by high voltage source 10 by DC/DC transducer 21, and then power supply is to the instrument element being operated in low-pressure state in vehicle.The parameter characterizing the power condition of low-tension supply 20 can be charge/discharge current or state-of-charge etc.In this example, parameter using state-of-charge as the power condition characterizing low-tension supply 20 is described, term " state-of-charge (SOC) " implication is in this article consistent with the understanding of those skilled in the art to it, it refers to the ratio that storage battery uses the capacity of a period of time or the residual capacity after lying idle for a long time and its fully charged state, conventional percentage represents, its span is 0 ~ 1, represents that battery discharges completely as SOC=0, represents that battery is full of completely as SOC=1.The minimum threshold of the state-of-charge of low-tension supply 20 is such as set to x, and most high threshold is such as set to y.In addition, as is well known, for low-tension supply 20, its charging current and discharging current can not be deposited at synchronization, when characterizing this power supply power state sometime with electric current, if this low-tension supply is in discharge condition, be then discharging current in order to characterize the parameter of its power condition, if this low-tension supply is in charged state, be then charging current in order to characterize the parameter of its power condition.
In step 24, detect the parameter of the sign power condition of low-tension supply, the concrete condition of detected parameter and the minimum threshold x pre-set for low-tension supply and most high threshold y are compared, then according to the output of comparative result determination DC-DC converter.Such as, detect the state-of-charge of low-tension supply 20, its value is m, then, when x≤m≤y, make the output of DC/DC transducer 21 be in optimum output stage; When m<x, the output of DC/DC transducer 21 is made to be in the highest output stage; When y<m, the output of DC/DC transducer 21 is made to be in minimum output stage.The parameter of power condition can be levied by sheet detect sensor.For the detection of state-of-charge, such as can be obtained by the EBS equipment of the Bosch that can obtain in the market, this equipment can detect voltage, electric current, temperature and state-of-charge.
Further, according to an example of the present invention, in step 24, the parameters of electric power detecting high voltage source 10 can also be comprised.The parameters of electric power of high voltage source 10 detected, such as, when state-of-charge is low, the most high threshold for A-battery 20 that adjustable pre-sets and minimum threshold, make the most high threshold of A-battery 20 and minimum threshold entirety lower; Wherein, whether low state-of-charge is fixed according to embody rule, specifically depends on the requirement of applied environment to high voltage source, in the application, think that the state-of-charge of high voltage source is low lower than 60%, in other application, think that the state-of-charge of high voltage source is low lower than 70%.
As above, that the method shown in Fig. 2 is applied in hybrid vehicle, be described in the applied environment of plug-in hybrid-power automobile or pure electric automobile, under such applied environment, according to another example of the present invention, the method also comprises the vehicle driving state information received from full-vehicle control unit 30, so, the output of the determination DC-DC converter carried out in step 24 is implemented as detected parameters of electric power and described most high threshold, minimum threshold compares, and the output of described DC-DC converter is determined according to comparative result and vehicle driving state information.In all examples of the present invention, namely vehicle driving state information such as comprise high-tension battery 10 is in the information of charged state, high-tension battery 10 is in discharge condition information, key-on(, and ignition switch is in the state that on is in connection in other words) state, braking energy feedback state etc.When vehicle is in braking energy feedback state, the output of DC/DC transducer 21 can be arranged to the highest output stage; When high-tension battery 10 is in charged state, the output of DC/DC transducer 21 can be arranged to minimum output stage; When key-on state, the output of DC/DC transducer 21 can be arranged to optimum output stage.
According to the actual power condition of low-tension supply 20, adjustment flows to the electric power of low-tension supply 20, low-tension supply 20 can be made to be in non-fully charged state on the one hand, be conducive to life-saving, certainly also can prevent from overcharging.In all examples of the present invention, exemplarily, most wealthy family is limited to 85%, and minimum threshold is 75%, and the setting of most high threshold and minimum threshold can be determined according to actual conditions.In addition, pass through the output of the actual state-of-charge adjustment DC/DC transducer 21 of detected low-tension supply 20, low-tension supply 20 can be made to be in reliable power state.The low-tension supply 20 being always in firm power state is the energy source very reliably of each electronic equipment receiving its supply of electric power in upper startup once.
High voltage source 10, is also powered such as, to other parts be connected electrically, startup/power generation all-in-one machine in the process of low-tension supply 20 as required in power supply.Under these circumstances, when the power condition of low-tension supply 20 reaches the minimum threshold pre-set, namely reduce the output of DC/DC transducer 21, more supply of electric power in high voltage source 10 just can be made to the part that in vehicle, other needs, high voltage source 10 electrical distribution more to be optimized.
The combination that can be embodied as software module, hardware module or software restraint for the method controlling to the electric power of low-tension supply as above, and the combination of this software module, hardware module or software restraint is embodied as an independently module, also can realize in full-vehicle control unit.
According to an example of the present invention, also provide a kind of system 3 of the electric power for controlling to low-tension supply, wherein low-tension supply is electrically connected with high voltage source by DC-DC converter, and Fig. 3 illustrates the structure of this system 3.This system 3 controlling to the electric power of low-tension supply comprises and arranges interface 300, detecting unit 320, comparing unit 340 and control unit 360.The illustrated in Figure 3 interface 300 that arranges provides to user and arranges interface, makes user pre-set multiple output stages of this DC-DC converter by it, and the minimum threshold pre-setting the parameters of electric power characterizing low-tension supply power state and most high threshold.Detecting unit 320 detects the power state of low-tension supply, and testing result is transferred to comparing unit 340.Received detection signal and the minimum threshold pre-set, most high threshold compare, and comparative result are exported to control unit 360 by comparing unit 340.Control unit 360 exports control signal to DC-DC converter, to adjust its output stage according to comparative result.
It will be appreciated by those skilled in the art that, interface 300 is set and also for user, other parameter relevant with electric power networks can be set, the such as temperature threshold etc. of low-tension supply, DC-DC converter.Under these circumstances: detecting unit 320 is configured to outside the parameters of electric power detecting low-tension supply, also can detect the parameters of electric power of high voltage source, and detect the temperature parameter of low-tension supply, high voltage source and DC/DC transducer, and equally testing result is transferred to comparing unit 340, so, detecting unit 320 may comprise the transducer for sensing parameters of electric power, as voltage sensor, also comprises temperature sensor; Comparing unit 34 is configured to, outside being compared with threshold value by the parameters of electric power of reception, also compare with critical value with regard to received temperature value, and comparative result is transferred to control unit 360; Control unit 360 is configured to controlling outside DC-DC converter according to the comparative result of parameters of electric power and threshold value, also carries out corresponding action according to the comparative result of temperature, such as, when temperature is higher than critical value, sends alarm signal.
Fig. 4 is the electric power networks in the vehicle of the system 3 that have employed the electric power for controlling to low-tension supply shown in Fig. 3.As shown in the figure, compared with the electric power networks shown in Fig. 1, electric power networks in this example also comprises the system 3 of the electric power for controlling to low-tension supply, and high-tension battery 10 is not directly be electrically connected with full-vehicle control unit 30, but is electrically connected with full-vehicle control unit 30 by system 3.In addition, DC/DC transducer 21 is electrically connected with system 3 respectively with A-battery 20.In some example described below, high-tension battery 10 is also electrically connected with the system 3 of the electric power for controlling to low-tension supply.
The different output stages that interface 300 arranges DC/DC transducer 21 are set by system 3, make it have different output voltages.In this example, the output of DC/DC transducer 21 is set to minimum output stage, optimum output stage and the highest output stage three.Exemplarily, the output valve of minimum output is about 10.6V, and the output valve of the highest output is about 16V, and the optimum output valve exported is about 14V.By arranging minimum threshold that interface 300 arranges the parameters of electric power characterizing low-tension supply 20 power condition and most high threshold.The parameter characterizing the power condition of low-tension supply 20 can be charge/discharge current and state-of-charge etc.In this example, the parameter using state-of-charge as the power condition characterizing low-tension supply 20 is described.The minimum threshold of the state-of-charge of low-tension supply 20 is such as set to x, and most high threshold is such as set to y.
By arranging minimum threshold that interface 300 pre-sets the output stage of DC/DC transducer 21 and the parameters of electric power of low-tension supply 20 and most high threshold.After electric power networks enters operating state, detecting unit 320 detects the power state of low-tension supply 20, such as, detect charge/discharge current or the state-of-charge of low-tension supply 20, in this example, to detect state-of-charge exemplarily.Such as, detect the state-of-charge of low-tension supply 20, its value is m.Testing result is transferred to comparing unit 340 by detecting unit 320.
Detected parameters of electric power compares with the threshold value pre-set by comparing unit 340, and comparative result is transferred to control unit 360.Particularly, the value m characterizing state-of-charge compares with threshold value x and the y preset by detecting unit 320, and comparative result is transferred to control unit 360.
Control unit 360 receives comparative result and arranges the output of DC/DC transducer 21 accordingly.When x≤m≤y, control unit 360 makes the output of DC/DC transducer 21 be in optimum output stage; When m<x, control unit 360 makes the output of DC/DC transducer 21 be in the highest output stage; When y<m, control unit 360 makes the output of DC/DC transducer 21 be in minimum output stage.
Alternatively, detecting unit 320 can also detect the state-of-charge of high-tension battery 10 further, and testing result and the threshold value of the state-of-charge for high-tension battery 10 pre-set are compared (at this, be appreciated that, threshold value pre-sets by arranging interface 300), and testing result is transferred to comparing unit 320, after it relatively, comparative result is transferred to control unit 360, control unit 360 exports corresponding signal according to comparative result, such as, if comparative result shows that the power state of current high-tension battery 10 is poor, then control unit 360 adjustable is for the most high threshold of low-tension supply and minimum threshold, also can be arranged to send alarm signal to point out user's high voltage source power state poor.Equally, detecting unit 320 also can be configured to the temperature detecting A-battery 20, DC/DC transducer 21 and high-tension battery 10 respectively further, the temperature of detected A-battery 20, DC/DC transducer 21 and high-tension battery 10 compares with their respective critical values by comparing unit 340, when any one in the temperature of A-battery 20, DC/DC transducer 21 and high-tension battery 10 of control unit 360 is greater than corresponding critical value, namely send corresponding warning.
More than the system 3 shown in Fig. 3 is applied in the applied environment of hybrid vehicle, plug-in hybrid-power automobile or pure electric automobile be described, under such applied environment, according to another example of the present invention, this system also receives the vehicle driving state information from full-vehicle control unit 30, so, control unit 360 is configured to detected parameters of electric power to compare with described most high threshold, minimum threshold, and determines the output of described DC-DC converter according to comparative result and vehicle driving state information.In addition, this system also sends the information such as such as fault message to full-vehicle control unit 30.Exemplarily, detecting unit 320 wherein can example but be battery condition sensor without limitation; And alternatively, comparing unit 340 and control unit 360 can realize in full-vehicle control unit 30, become its part.In addition, the entire system that also can be controlled to the electric power of low-tension supply being used for shown in Fig. 3 can realize in full-vehicle control unit 30.
According to still another embodiment of the invention, a kind of electric power networks be applied in hybrid vehicle, plug-in hybrid-power automobile or pure electric automobile is provided, it comprises high voltage source, low-tension supply, the DC-DC converter that high voltage source is electrically connected with low-tension supply, and for the system of the electric power that controls to low-tension supply.In this electric power networks, high voltage source is such as the high voltage source 10 in the example described as composition graphs above 3 and Fig. 4, low-tension supply is such as low-tension supply 20, DC-DC converter is such as DC/DC transducer 21, is such as the system of the electric power for controlling to low-tension supply shown in Fig. 3 for controlling to the system of the electric power of low-tension supply.
After have employed system as shown in Figure 3, the output of DC/DC transducer 21 can be adjusted according to the actual power state of the state of high voltage source, low-tension supply, thus make the electric power flowing to low-tension supply 20 adjustable.So, ensure that the reliability of low-tension supply 20, also help extend its useful life, be also suitable for the electric power of reasonable layout high voltage source 20 simultaneously.
Although by reference to the accompanying drawings in description above, disclose specific embodiments of the invention, it will be understood by those skilled in the art that and without departing from the spirit of the invention, disclosed specific embodiment can be out of shape or revise.Embodiments of the invention are only not limited to the present invention for signal.
Claims (10)
1. for controlling to a method for the electric power of low-tension supply, this low-tension supply is electrically connected with high voltage source by DC-DC converter, and described method comprises:
Pre-set multiple output stages of described DC-DC converter;
The minimum threshold pre-setting the parameters of electric power characterizing low-tension supply power state and most high threshold;
Detect the parameters of electric power of low-tension supply;
Detected parameters of electric power is compared with described most high threshold, minimum threshold, and determines the output of described DC-DC converter according to comparative result.
2. as claimed in claim 1 for controlling to the method for the electric power of low-tension supply, wherein, described method also comprises the parameters of electric power detecting high voltage source, and when the parameters of electric power of described high voltage source is low, reduces described minimum threshold and most high threshold.
3. as claimed in claim 1 or 2 for controlling to the method for the electric power of low-tension supply, wherein, described foundation comparative result determines that the output of described DC-DC converter comprises:
If the parameters of electric power detected is described most between high threshold and described minimum threshold, then the optimum that the output of described DC-DC converter is set in described output stage exports;
If the parameters of electric power detected is more than described most high threshold, then the output of described DC-DC converter is set to the minimum output in output stage;
If the parameters of electric power detected is below described minimum threshold, then the output of described DC-DC converter is set to the highest output in output stage.
4. as claimed in claim 3 for controlling to the method for the electric power of low-tension supply, wherein, described parameters of electric power is charge/discharge current, or state-of-charge.
5. as claimed in claim 3 for controlling to the method for the electric power of low-tension supply, it is applied in hybrid vehicle, plug-in hybrid-power automobile or pure electric automobile, and described method also comprises:
Receive the vehicle driving state information from full-vehicle control unit; And
Described detected parameters of electric power to be compared with described most high threshold, minimum threshold, and determines that the output of described DC-DC converter comprises according to comparative result:
Detected parameters of electric power is compared with described most high threshold, minimum threshold, and determines the output of described DC-DC converter according to comparative result and described vehicle driving state information.
6. for controlling to a system for the electric power of low-tension supply, low-tension supply is electrically connected by DC-DC converter high voltage source, and described system comprises:
Interface is set, for pre-setting multiple output stages of described DC-DC converter, and the minimum threshold pre-setting the parameters of electric power characterizing low-tension supply power state and most high threshold;
Detecting unit, it is configured to the parameters of electric power detecting low-tension supply, and testing result is transferred to comparing unit;
Comparing unit, it is configured to testing result to compare with most high threshold with the minimum threshold pre-set, and comparative result is transferred to control unit;
Control unit, it is configured to the output determining described DC-DC converter according to comparative result.
7. as claimed in claim 6 for controlling to the system of the electric power of low-tension supply, wherein, described detecting unit is also configured to detect the parameters of electric power of high voltage source, and described control unit is configured to when the parameters of electric power of described high voltage source is low, reduces described minimum threshold and most high threshold.
8. the system of the electric power for controlling to low-tension supply as claimed in claims 6 or 7, wherein, described control unit is configured to:
If the parameters of electric power detected is described most between high threshold and described minimum threshold, then the optimum output of described DC-DC converter be set in described output stage exports;
If the output of described DC-DC converter more than described most high threshold, is then set to the minimum output in output stage by the parameters of electric power detected;
If the parameters of electric power detected is below described minimum threshold, then the output of described DC-DC converter is set to the highest output in output stage.
9. as claimed in claim 8 for controlling to the system of the electric power of low-tension supply, wherein, described parameters of electric power is charge/discharge current, or state-of-charge.
10. as claimed in claim 8 for controlling to the system of the electric power of low-tension supply, it is applied in hybrid vehicle, plug-in hybrid-power automobile or pure electric automobile, and described control unit is configured to according to comparative result and the output determining described DC-DC converter according to the vehicle driving state information from entire car controller.
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| CN106904087A (en) * | 2017-01-26 | 2017-06-30 | 柳州延龙汽车有限公司 | Pure electric vehicle low tension battery charging method |
| CN110782165A (en) * | 2019-10-25 | 2020-02-11 | 深圳供电局有限公司 | Gridding power distribution network residual power supply capacity monitoring system |
| CN114865121A (en) * | 2022-04-14 | 2022-08-05 | 上海巴库斯超导新材料有限公司 | Charging method of graphene modified battery |
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| CN106042964A (en) * | 2016-06-27 | 2016-10-26 | 北京新能源汽车股份有限公司 | Electric automobile low-voltage storage battery control method and device and electric automobile |
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| CN110782165A (en) * | 2019-10-25 | 2020-02-11 | 深圳供电局有限公司 | Gridding power distribution network residual power supply capacity monitoring system |
| CN110782165B (en) * | 2019-10-25 | 2022-05-13 | 深圳供电局有限公司 | Gridding power distribution network residual power supply capacity monitoring system |
| CN114865121A (en) * | 2022-04-14 | 2022-08-05 | 上海巴库斯超导新材料有限公司 | Charging method of graphene modified battery |
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| CN104767230B (en) | 2019-07-26 |
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