CN104092365A - Enabling control method of direct-current high-voltage and low-voltage converter and voltage outputting control method - Google Patents
Enabling control method of direct-current high-voltage and low-voltage converter and voltage outputting control method Download PDFInfo
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Abstract
The invention provides an enabling control method of a direct-current high-voltage and low-voltage converter (DC-DC Converter) and a voltage outputting control method, and belongs to the technical field of hybrid power automobiles. In the enabling control method, whether the DC-DC converter is started or shut off is determined by judging whether certain conditions are met, and accordingly a high-voltage power battery is protected. According to the voltage outputting control method, by judging the work mode of the DC-DC Converter, output voltage is set, and the method has the advantages of being intelligent, low in energy consumption and capable of protecting a low-voltage battery and the DC-DC Converter.
Description
Technical field
The invention belongs to Development of HEV Technology field, relate to a kind of direct current high-low pressure transducer, what relate in particular to direct current high-low pressure transducer enables control method and output voltage control method.
Background technology
In short supply along with the continuous deterioration of global environment and the energy, reduces air pollution and petroleum-based energy is relied on and becomes the problem that various countries more and more pay close attention to.In order to reduce environmental pollution, alleviate Pressure on Energy, the automobile of research energy-saving and environmental protection becomes a kind of inevitable trend of various countries' development auto industry.At present, research and production hybrid vehicle have become the first-selection of various countries' automobile industry.Hybrid vehicle is that motor and engine are combined; can realize electric motor starting, regenerative braking, idle stop, intelligent charge, motor power-assisted, the electronic mixed function such as creep, it has the oil consumption of reduction, increases continual mileage, technology maturity advantages of higher relatively.
Normally, hybrid electric vehicle comprises two power storage bags: high voltage power battery and A-battery.High voltage power battery normally when mixed motor-car regenerative braking, the electrical power storage that vehicle energy is changed into; A-battery is used for to vehicle-mounted low-voltage load power supply.In order to improve the capacity usage ratio of high voltage power battery, reduce the consumption of vehicle fuel, hybrid electric vehicle generally can adopt a kind of direct current high-low pressure transducer (DC-DC Converter) between high voltage power battery network and A-battery network.
Figure 1 shows that power system structure schematic diagram relevant to direct current high-low pressure transducer in the hybrid vehicle of prior art.As shown in Figure 1, BSG(Belt-driven Startar Generator, band driving starter-generator) motor can be converted to electric energy by unnecessary kinetic energy, this electric energy is after inverter conversion, form with high direct voltage is stored in high voltage power battery, direct current high-low pressure transducer is inputted high voltage direct current from high voltage power battery or inverter, then with the formal output of relatively low pressure to A-battery or load, voltage request and the A-battery of this output match, to power to A-battery.Simultaneously, HCU(entire car controller) by CAN bus, be connected with direct current high-low pressure transducer, and can control direct current high-low pressure transducer, for example, control opening or closure state of direct current high-low pressure transducer, the output voltage (Set Point) of regulation and control direct current high-low pressure transducer etc.
Yet, in the control method of traditional direct current high-low pressure transducer, the enabling of direct current high-low pressure transducer controlled the factors such as cond that the control of closure state (open or) do not consider correlated inputs parameter, high voltage power battery self yet, therefore likely can cause damage (for example overdischarge) to high voltage power battery; In the output voltage control of direct current high-low pressure transducer, for example do not consider detection signal, the direct current height mode of operation of electric pressure converter,, therefore the factors such as cond of A-battery self likely can cause damage (overcharging) to direct current high-low pressure transducer and A-battery.
What in view of this, be necessary to propose a kind of relatively intelligentized direct current high-low pressure transducer enables control method and output voltage control method.
Summary of the invention
The technical problem to be solved in the present invention is, meeting in the need for electricity situation of low-voltage load, controls direct current height electric pressure converter with protection high voltage power battery and A-battery.
For solving above technical problem, according to an aspect of of the present present invention, provide a kind of control method that enables of direct current high-low pressure transducer.Comprise:
(1) judge whether to meet first condition, if met, make described direct current height electric pressure converter be placed in enabled state, if do not met, described direct current height electric pressure converter is placed in and enables illegal state; And
(2) in the situation that described direct current height electric pressure converter is placed in enabled state, continue to judge whether to meet second condition, the 3rd condition and the 4th condition, if any one in second condition, the 3rd condition and the 4th condition do not meet, described direct current height electric pressure converter is placed in and enables illegal state, if all conditions in second condition, the 3rd condition and the 4th condition can meet, make described direct current height electric pressure converter continue to be placed in enabled state;
Wherein, described first condition is the set of vehicle power on signal, the set of vehicle launch settling signal, and the set of hybrid dynamic system enable signal, the mixed moving status signal set of car load are connected home position signal with high voltage power battery;
Described second condition be the actual discharge power of described high voltage power battery be less than or equal to it can discharge power;
Described the 3rd condition is that described high voltage power battery is that absence of discharge state or its state-of-charge are greater than lowest threshold;
Described the 4th condition be described high voltage power battery can discharge power and state-of-charge be greater than respectively its first threshold.
According to an embodiment who enables control method provided by the invention, the scope of described lowest threshold is 1% substantially.
According to an embodiment who enables control method provided by the invention, described high voltage power battery can discharge power first threshold be 2% to 4% substantially, the first threshold of the state-of-charge of described high voltage power battery is 2% to 4% substantially.
According to an embodiment who enables control method provided by the invention, described first condition is received by entire car controller.
Preferably, by vehicle control unit controls, so that described direct current height electric pressure converter is placed in enabled state or enables illegal state.
According to another aspect of the present invention, a kind of output voltage control method of direct current high-low pressure transducer is provided, described output voltage is for charging to A-battery, and the method comprises:
At described direct current high-low pressure transducer, during in enabled state, judge the residing mode of operation of described direct current high-low pressure transducer;
If described direct current high-low pressure transducer is in prestart pattern, setting described output voltage is 0;
If described direct current high-low pressure transducer, in starting rear pattern, is set the rated voltage that described output voltage is greater than described A-battery;
If it is that constant voltage values is to protect described A-battery safety that described direct current high-low pressure transducer in fault mode, is forced to make described output voltage;
If described direct current high-low pressure transducer in normal mode of operation, further judges that whether described direct current high-low pressure transducer is in heat pattern, normal temperature pattern or cold pattern,
If described direct current high-low pressure transducer in described heat pattern, is set described output voltage and is less than the first magnitude of voltage to protect described direct current high-low pressure transducer,
If described direct current high-low pressure transducer is in described normal temperature pattern, the state-of-charge based on described A-battery, described output voltage is set,
If described direct current high-low pressure transducer, in described cold pattern, is set the rated voltage that described output voltage is greater than described A-battery.
According to the preferred embodiment of output voltage control method provided by the invention, wherein, when described output voltage is greater than the rated voltage of described A-battery, described output voltage be substantially described A-battery rated voltage 116% to 125%.
Particularly, the rated voltage of described A-battery is 12 volts, and when described output voltage is greater than the rated voltage of described A-battery, described output voltage is about 14 volts to 15 volts.
According to the preferred embodiment of output voltage control method provided by the invention, wherein, described the first magnitude of voltage be substantially described A-battery rated voltage 116%.
Particularly, the rated voltage of described A-battery is 12 volts, and described the first magnitude of voltage is 14 volts.
According to the another preferred embodiment of output voltage control method provided by the invention, wherein, described direct current high-low pressure transducer is when described normal temperature pattern, and when described state-of-charge is less than or equal to first threshold point, described output voltage is raised along with the rising of described state-of-charge; When described state-of-charge is more than or equal to Second Threshold point, described output voltage reduces along with the rising of described state-of-charge; When described state-of-charge is greater than first threshold and puts and be less than Second Threshold point, described output voltage substantially constant.
Preferably, described first threshold point is selected in the scope of 30%-40%, and described Second Threshold point is selected in the scope of 60%-70%.
Wherein, when described state-of-charge is less than or equal to described first threshold point, described output voltage is along with the rising of described state-of-charge is raised with parabola, straight line or stepped-style; When described state-of-charge is more than or equal to described Second Threshold point, described output voltage is along with the rising of described state-of-charge reduces with parabola, straight line or stepped-style.
According to output voltage control method provided by the invention, wherein, by vehicle control unit controls and judge the residing mode of operation of described direct current high-low pressure transducer.
Described entire car controller receives detection signal to carry out the judgement of described mode of operation, described detection signal comprises the output current signal of direct current height electric pressure converter, the output voltage signal of direct current height electric pressure converter, the temperature signal of direct current height electric pressure converter, the current signal of A-battery, the water temperature signal of engine, ambient temperature signal, the mixed moving status signal of car load, electric motor starting auxiliary signal, high voltage power battery charge state signal, high voltage power battery can discharge power signal, the power signal of direct current height electric pressure converter, vehicle power on signal and vehicle launch settling signal.
Technique effect of the present invention is; when direct current height electric pressure converter is applied the above and is enabled control method and output voltage control method; can form good over to high voltage power battery; and can form good over-charge protective to A-battery; in conjunction with self-condition, select different output voltages simultaneously; realization is to A-battery intelligent charge energy efficient simultaneously, and direct current height electric pressure converter is formed to good protection.
Accompanying drawing explanation
Fig. 1 is power system structure schematic diagram relevant to direct current high-low pressure transducer in the hybrid vehicle of prior art;
Fig. 2 be the direct current height electric pressure converter that provides according to the embodiment of the present invention enable control method schematic flow sheet;
Fig. 3 is the output voltage control method schematic flow sheet of the direct current height electric pressure converter that provides according to the embodiment of the present invention;
Fig. 4 is the curve synoptic diagram of state-of-charge and output voltage when normal temperature pattern.
Embodiment
What introduce below is some in a plurality of possibility embodiment of the present invention, aims to provide basic understanding of the present invention.Be not intended to confirm key of the present invention or conclusive key element or limit claimed scope.Easily understand, according to technical scheme of the present invention, do not changing under connotation of the present invention other implementation that one of ordinary skill in the art can propose mutually to replace.Therefore, following embodiment and accompanying drawing are only the exemplary illustrations to technical scheme of the present invention, and should not be considered as of the present invention all or be considered as the restriction of technical solution of the present invention or restriction.
The control method providing in this invention is for direct current high-low pressure transducer (example direct current high-low pressure transducer in) as shown in Figure 1, and direct current high-low pressure transducer can be converted to the high voltage direct current of high voltage power battery low-voltage direct, for example, to meet the power reguirements of A-battery and low-voltage load (low-voltage electrical appliance).Method of the present invention can be used for judging that whether direct current high-low pressure transducer is in enabled state the further output voltage (or being called again Voltage-output voltage (Set Point)) of setting direct current high-low pressure transducer.It should be noted that, here to be set in certain point (or certain value) be not to be definitely fixed on some points (or certain value) to said output voltage, it will be understood by those skilled in the art that output voltage can (for example, in 0.5% the margin of tolerance), near vibration output certain point (or value) in the margin of tolerance that A-battery coupling allows.
What the direct current height electric pressure converter that provides according to the embodiment of the present invention was provided enables control method schematic flow sheet.In this embodiment, only the control method that enables of direct current height electric pressure converter is illustrated, other control procedure about direct current height electric pressure converter is not described one by one at this, and still, the embodiment illustrated in fig. 2 control method that enables can be in conjunction with being applied in other control method.Particularly, enable control method and comprise following methods process.
Step S10, judges whether to satisfy condition 1, and condition 1 refers to the set of vehicle power on signal, the set of vehicle launch settling signal, and the set of hybrid dynamic system enable signal, the mixed moving status signal set of car load are connected home position signal with high voltage power battery.In this step, HCU is the included coherent signal of condition of acceptance 1 first, and these signals (vehicle power on signal, vehicle launch settling signal, hybrid dynamic system enable signal, the mixed moving status signal of car load, high voltage power battery connect signal etc.) can gather then transmission by signal pickup assembly.Whether HCU then Rule of judgment 1 meets, also refer to vehicle power on signal, vehicle launch settling signal, whether all hybrid dynamic system enable signal, the mixed moving status signal of car load are connected signal set with high voltage power battery, if be judged as "Yes", enter step S20, if be judged as "No", enter step S42, direct current height electric pressure converter, in enabling illegal state, is also open mode, and direct current height electric pressure converter is not worked.
Further, step S20, direct current height electric pressure converter is in enabled state.Now, direct current height electric pressure converter closure state, direct current height electric pressure converter can normally be worked.
Further, in direct current height electric pressure converter course of normal operation, step S31, judges whether to satisfy condition 2, and in this embodiment, condition 2 refers to that the actual discharge power of high voltage power battery is less than or equal to it can discharge power.Actual discharge power can draw by high-tension battery high voltage bus electric current and voltage signal.If what the actual discharge power of high voltage power battery was greater than high voltage power battery can discharge power, direct current height electric pressure converter will cause high voltage power battery to damage while working on, now condition 2 does not meet, enter step S42, by HCU, control, make direct current height electric pressure converter in enabling illegal state; Otherwise, enter step S32, further judge.
Further, step S32, judges whether to satisfy condition 3, and in this embodiment, condition 3 refers to that high voltage power battery is that absence of discharge state and its state-of-charge are lower than lowest threshold.The lowest threshold is here to be about 1%, also when the state-of-charge of high voltage power battery is too low (being less than lowest threshold), for preventing that high voltage power battery is because overdischarge is badly damaged, control direct current height electric pressure converter in enabling illegal state, also enter step S42.Otherwise, enter step S33, further judge.
Further, step S33, judges whether to satisfy condition 4, in this embodiment, condition 4 refer to high voltage power battery can discharge power and state-of-charge be greater than respectively its first threshold.Normally; what high voltage power battery had a first threshold can discharge power and the first threshold of state-of-charge; this is the battery operated extreme value protective condition of high voltage power; must meet simultaneously; if current high voltage power battery can discharge power and state-of-charge can not be greater than this extremum conditions simultaneously; will cause damage to high voltage power battery, therefore, this is also should be avoided in the course of work of direct current height electric pressure converter.In an embodiment, current high voltage power battery can discharge power and state-of-charge can gather by signal pickup assembly equally, then in HCU, judge.Normally, high voltage power battery can discharge power first threshold be 2% to 4% substantially, the first threshold of the state-of-charge of high voltage power battery is 2% to 4% substantially.If do not satisfy condition 4, the current high voltage power battery of meaning person can discharge power and state-of-charge too low, control direct current height electric pressure converter in enabling illegal state, also enter step S42.
Further, if satisfied condition, 4 meeting, enter step S41, is also that direct current height electric pressure converter keeps enabled state.
So far, the control method process that enables of high voltage power battery finishes, above procedure can loop, thereby can, according to the dynamic monitoring of (connecting signal, high voltage power battery power signal, high voltage power battery charge state signal etc. such as vehicle power on signal, vehicle launch settling signal, hybrid dynamic system enable signal, the mixed moving status signal of car load, high voltage power battery) of the correlated condition situation to high voltage power battery, dynamically control the enabled state of direct current height electric pressure converter.
It should be noted that, above step S31, S32, S33 judge realization in order successively, and still, in other embodiments, the execution sequence of step S31, S32, S33 is not restrictive, for example, can also realize with the order of step S33, S32, S31; Only, when condition 2, condition 3, condition 4 meet simultaneously, just can make direct current height electric pressure converter be placed in enabled state; If any condition does not meet, direct current height electric pressure converter will be placed in and enable illegal state.In addition, more than enabling control procedure can be sent and be controlled signal to direct current height electric pressure converter and realize by HCU.Particularly, to be generally rated voltage be the A-battery of about 12 volts to A-battery.
If direct current height electric pressure converter, in enabled state, further need to be controlled its output voltage.The present invention further provides the output voltage control method of direct current high-low pressure transducer, in this invention, according to the residing mode of operation of direct current high-low pressure transducer, set output voltage.
The output voltage control method schematic flow sheet of the direct current height electric pressure converter providing according to the embodiment of the present invention is provided.In this embodiment, only the output voltage control method of direct current height electric pressure converter is illustrated, other control procedure about direct current height electric pressure converter is not described one by one at this, and still, the embodiment illustrated in fig. 3 control method that enables can be in conjunction with being applied in other control method.Particularly, output voltage control method comprises following methods process.
Step S310, judges that whether direct current height electric pressure converter is in prestart pattern; If be judged as "Yes", A-battery does not need charging, therefore enters step S311, and the output voltage of setting direct current height electric pressure converter is 0, is now equivalent to direct current height electric pressure converter in enabling illegal state.
Further, step S320, further judges that whether direct current high-low pressure transducer is in starting rear pattern; If be judged as "Yes", because the loss ratio to A-battery is larger in starting process, need to A-battery, charge to supplement as early as possible the energy of A-battery; For this reason, set the rated voltage that output voltage is greater than A-battery, also enter step S321, thereby can accelerate the charging rate to A-battery.In this embodiment, output voltage is preferably selected in 116% to 125% scope of the rated voltage of A-battery, and for example, the rated voltage of A-battery is 12 volts conventionally, can set output voltage and be approximately 14 to 15 volts A-battery is charged.In this process, also cannot select too high output voltage, in order to avoid A-battery is caused and overcharged.
Further, step S330, judges that whether direct current high-low pressure transducer is in fault mode; In this step, fault mode mainly refers to when the structure shown in Fig. 1 breaks down, for example, when system communication goes wrong.Normally, it is also referred to as default mode.Also when breaking down, direct current high-low pressure transducer is controlled output voltage with default mode.If be judged as "Yes"; enter step S331; it is constant voltage values that pressure makes output voltage; the choosing of constant voltage values be take, and can to protect A-battery be safely criterion; for example; when the rated voltage of A-battery is 12 volts, constant voltage values is selected being about within the scope of 13-15 volt, for example 14 volts.If be judged as "No", represent that direct current high-low pressure transducer is in normal mode of operation.Further enter step S341, S342 or S343.
Further, selectively perform step S341, S342 or S343, to judge that direct current high-low pressure transducer is whether in some in heat pattern, cold pattern and normal temperature pattern.In the residing pattern of this judgement direct current high-low pressure transducer of temperature signal according to gathered direct current high-low pressure transducer, in this embodiment, for example, if the excess Temperature of direct current high-low pressure transducer (being greater than 90 ℃) represents in heat pattern; If the temperature of direct current high-low pressure transducer for example, during lower than a certain temperature (being less than 80 ℃) and engine water temperature relatively low (for example, lower than 60 ℃), ambient temperature relatively low (for example, lower than 15 ℃), represents in cold pattern; Otherwise, in the normal temperature pattern except heat pattern and cold pattern.Heat pattern, cold pattern and normal temperature the pattern respectively temperature parameter of corresponding specific definition are not limited by the embodiment of the present invention.
When step S341 is judged as "Yes", enter step S351, set output voltage below a certain magnitude of voltage, it is object that the choosing of this magnitude of voltage protected direct current high-low pressure transducer, preferably, this magnitude of voltage can be about A-battery rated voltage 116%.For example, when the rated voltage of A-battery is 12V, set output voltage below 14V.Can prevent like this direct current high-low pressure transducer excess Temperature, be conducive to protect direct current high-low pressure transducer, and be conducive to protect A-battery.
When step S342 is judged as "Yes", enter step S352, the state-of-charge based on described A-battery, described output voltage is set.In conjunction with state-of-charge, output voltage being set can reduce as much as possible output voltage (being also the charging voltage of A-battery) in the situation that meeting load need for electricity, is conducive to save energy consumption, and output voltage can with A-battery matched well.Preferably, can carry out regulation output voltage with state-of-charge-output voltage relation curve embodiment illustrated in fig. 4, after in connection with Fig. 4, be elaborated.
When step S343 is judged as "Yes", enter step S353, set the rated voltage that described output voltage is greater than described A-battery.Therefore, can provide charging voltage, accelerate the charging to A-battery, and increase caloric value.In this embodiment, output voltage is preferably selected in 116% to 125% scope of the rated voltage of A-battery, and for example, the rated voltage of A-battery is 12 volts conventionally, can set output voltage and be approximately 14 to 15 volts A-battery is charged.In this process, also cannot select too high output voltage, in order to avoid A-battery is caused and overcharged.
So far, output voltage control method process finishes, above procedure can loop, thereby can, according to the dynamic monitoring to the correlated condition situation of A-battery and direct current height electric pressure converter, dynamically control the output voltage of direct current height electric pressure converter.
It should be noted that, in above mode decision process, mainly to realize by HCU, HCU receives some detection signals, this detection signal mainly comprises: the output current signal of direct current height electric pressure converter, the output voltage signal of direct current height electric pressure converter, the temperature signal of direct current height electric pressure converter, the current signal of A-battery, the water temperature signal of engine, ambient temperature signal, the mixed moving status signal of car load, electric motor starting auxiliary signal, high voltage power battery charge state signal, high voltage power battery can discharge power signal, the power signal of direct current height electric pressure converter, vehicle power on signal, vehicle launch settling signal etc.Those skilled in the art can formulate mode decision rule implementation pattern judgement according to above detection signal.
By above output voltage control method process, can obviously find out, A-battery can be avoided overcharging, the relative reduction of probability of damage of A-battery and direct current height electric pressure converter, and energy consumption also can reduce greatly.
Figure 4 shows that the curve synoptic diagram of state-of-charge and output voltage when normal temperature pattern.In this embodiment, according to curve described in figure, carry out output voltage control.Wherein, abscissa represents the state-of-charge of A-battery, and ordinate represents the output voltage of direct current high-low pressure electric pressure converter, output voltage take volt be unit.In this embodiment, curve 50 represents the schematic diagram that is related to of output voltage and charged shape, as shown in Figure 4, the variation of the state-of-charge based on A-battery, when state-of-charge is less than or equal to first threshold point, along with the rising of state-of-charge, the output voltage of high-low pressure transducer is constantly raised (as shown in curve 50a); When state-of-charge is more than or equal to Second Threshold point, along with the rising of state-of-charge, the output voltage of high-low pressure transducer constantly reduces (as shown in curve 50c); When state-of-charge is greater than first threshold and puts and be less than Second Threshold point, along with the variation of state-of-charge, the output voltage of high-low pressure transducer is substantially constant at a certain value (as shown in curve 50b).In this embodiment, when state-of-charge is less than or equal to first threshold point, represent that state-of-charge is relatively low, for strengthening the protection to A-battery, therefore constantly raise output voltage, particularly, first threshold point can be selected in the scope of 30%-40%.When state-of-charge is more than or equal to Second Threshold point, represent that state-of-charge is relatively high, for preventing that overcharging phenomenon occurs, therefore constantly reduce output voltage, particularly, Second Threshold point can be selected in the scope of 60%-70%.In the control procedure of output voltage, particularly, the 12 volts of A-batteries of take are example, shown in Fig. 1, relevant information (the electric current of 12 volts of A-batteries, voltage, state-of-charge etc.) can collectedly be passed to HCU, HCU is according to transmitted state-of-charge signal, curved line relation based on shown in Fig. 4 is calculated the output voltage of direct current high-low pressure transducer, this output voltage signal passes through CAN bus transfer to direct current high-low pressure transducer, thereby before first threshold point, the output voltage of (or reduction) direct current high-low pressure transducer is raised in realization along with the continuous rising (or reduction) of the state-of-charge of A-battery, after Second Threshold point, realization reduces the output voltage of (or raising) direct current high-low pressure transducer along with the continuous rising (or reduction) of the state-of-charge of A-battery.
It should be noted that, embodiment illustrated in fig. 4 in, curve 50a and 50c only show variation relation with parabola or approximate parabolical form, but the concrete form of curve 50a and 50c this be not restrictive.For example, 30a and 30b can realize curve 50a and the represented variation relation of 50c for form of straight lines, stepped-style etc. respectively.At this, will not enumerate, those skilled in the art can require specifically to arrange curvilinear motion form according to the physical relationship of output voltage and state-of-charge.
What above example had mainly illustrated direct current high-low pressure transducer enables control method and output voltage control method, although only some of them embodiments of the present invention are described, but those of ordinary skills should understand, the present invention can be within not departing from its purport and scope implements with many other forms.Therefore, the example of showing and execution mode are regarded as illustrative and not restrictive, and in the situation that not departing from spirit of the present invention as defined in appended each claim and scope, the present invention may be contained various modifications and replacement.
Claims (5)
- Direct current high-low pressure transducer enable a control method, it is characterized in that,(1) judge whether to meet first condition, if met, make described direct current height electric pressure converter be placed in enabled state, if do not met, described direct current height electric pressure converter is placed in and enables illegal state; And(2) in the situation that described direct current height electric pressure converter is placed in enabled state, continue to judge whether to meet second condition, the 3rd condition and the 4th condition, if any one in second condition, the 3rd condition and the 4th condition do not meet, described direct current height electric pressure converter is placed in and enables illegal state, if all conditions in second condition, the 3rd condition and the 4th condition can meet, make described direct current height electric pressure converter continue to be placed in enabled state;Wherein, described first condition is the set of vehicle power on signal, the set of vehicle launch settling signal, and the set of hybrid dynamic system enable signal, the mixed moving status signal set of car load are connected home position signal with high voltage power battery;Described second condition be the actual discharge power of described high voltage power battery be less than or equal to it can discharge power;Described the 3rd condition is that described high voltage power battery is that absence of discharge state or its state-of-charge are greater than lowest threshold;Described the 4th condition be described high voltage power battery can discharge power and state-of-charge be greater than respectively its first threshold.
- 2. the control method that enables as claimed in claim 1, is characterized in that, the scope of described lowest threshold is 1% substantially.
- 3. the control method that enables as claimed in claim 1, is characterized in that, described high voltage power battery can discharge power first threshold be 2% to 4% substantially, the first threshold of the state-of-charge of described high voltage power battery is 2% to 4% substantially.
- 4. the control method that enables as claimed in claim 1, is characterized in that, described first condition is received by entire car controller.
- 5. the control method that enables as claimed in claim 1, is characterized in that, by vehicle control unit controls, so that described direct current height electric pressure converter is placed in enabled state or enables illegal state.
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| CN201410285058.5A CN104092365B (en) | 2010-12-29 | 2010-12-29 | The enable control method and output voltage control method of direct current converter |
| CN201010620605.2A CN102545573B (en) | 2010-12-29 | 2010-12-29 | Enabling control method and output voltage control method of direct current-direct current converter (DC-DC converter) |
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| CN107499137A (en) * | 2017-06-12 | 2017-12-22 | 宝沃汽车（中国）有限公司 | The electrification control method and device of vehicle |
| CN108216086A (en) * | 2017-12-15 | 2018-06-29 | 广州汽车集团股份有限公司 | A kind of DC-DC converter and its control method of the micro- mixing systems of 48V |
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