CN105667498A - Allocating method and device for electricity generating power of hybrid electric vehicle in series connection mode - Google Patents
Allocating method and device for electricity generating power of hybrid electric vehicle in series connection mode Download PDFInfo
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Abstract
The invention relates to an allocating method and device for electricity generating power of a hybrid electric vehicle in a series connection mode. The allocating method comprises the following steps of when the power source of the hybrid electric vehicle is in the series connection mode, allocating ISG electricity generating power for driving the vehicle and charging a power battery according to the order of priority of power requirements for driving the vehicle and power requirements for charging the power battery; and when braking energy is recycled, prior allocating TM electricity generating power for charging the power battery. According to the technical scheme of the allocating method and device disclosed by the invention, when the allocation of the electricity generating power to the power requirements for driving the vehicle and the power requirements for charging the power battery is considered in the series connection mode, the ISG electricity generating power is allocated to preferentially meet the requirements for driving the vehicle, so that certain vehicle power performance is guaranteed; when the braking energy is recycled, the TM electricity generating power is preferentially allocated to charge the power battery, so that better economical efficiency can also be achieved.
Description
Technical field
The present invention relates to technical field of automobile control, in particular to apportioning method and the device of generated output under a kind of hybrid vehicle series model.
Background technology
Along with the attention of energy security and environmental protection problem is constantly promoted by the world, automotive emissions are required more and more stricter by various countries. Reduce the dependence to the energy, it is achieved energy-saving and emission-reduction, have become the problem that world economy sustainable development is in the urgent need to address. Hybrid vehicle, pure electric automobile have become the trend of current car industry development. Together with motor is combined in by oil-electric vehicle with engine; rational energy saving and emission reduction effects, idle stop, electric motor starting, intelligent charge, regenerative braking, motor power-assisted, the electronic mixed dynamic function such as creep is achieved for each operating mode; have reduction oil consumption, increase continual mileage, technology maturity compares advantages of higher, is the first-selected trend of current Ge great motor corporation development.
The power system of hybrid vehicle is generally by engine, traction electric machine (TM, TractionMotor), integrated starting-generating machine (ISG, IntegratedStarterGenerator) forming, three propulsion sources can be combined in wheel end output torque to drive vehicle according to operating mode difference. The control to C1 and C2 two clutch couplinges that is combined through of propulsion source realizes, and clutch coupling C1 is for often to leave clutch coupling, and clutch coupling C2 is normal-close clutch device. If only needing TM motor output torque to wheel end to drive vehicle, then hybrid controller (HCU, HybridControlUnit) controls what clutch coupling C1 opened always, and clutch coupling C2 closes always. If also exportable moment of torsion is to wheel end to drive vehicle to need engine and ISG motor, then the closed clutch coupling C1 of HCU control realizes three propulsion source combinations and drives vehicle.
HCU can be operated in pure electronic, series, parallel Three models according to different operating conditions propulsion sources. When the state-of-charge (SOC, StateOfCharge) of power cell is higher, if time vehicle traction power demand is less, HCU control is operated in electric-only mode, now only has TM machine operation.When driving power demand is bigger do not have other to limit simultaneously time, if meeting paralleling model entry condition (speed of a motor vehicle condition etc.), HCU control power system enter paralleling model, at this moment three propulsion sources can provide power simultaneously.
Usually, series model can be entered when lower or power cell discharge capability is not enough at power cell SOC, for power battery charging or discharge power is provided to TM motor for driving vehicle by driven by engine ISG electric power generation, at this moment the generated output of ISG motor is based on parameters such as power cell SOC, and in conjunction with various restricted condition as the power generation capacity of ISG motor, the available charge power of power cell and whole car noise, vibration and sound vibration roughness (NVH, Noise, Vibration, Harshness) requirement etc. are calculated. Then speed set point and the engine torque request of ISG motor is calculated according to generated output, finally rate control instruction and speed set(ting)value are passed through CAN bus (CANBus, ControllerAreaNetworkBus) electric machine control device (MCU it is sent to, MotorControlUnit), and engine torque request is sent to engine controller (ECU, EngineControlUnit) by CAN.
But, under prior art is not in series model with regard to the propulsion source of hybrid vehicle, existing vehicle traction power demand has again the demand to power cell forced charge (SOC is very low) and when vehicle braking energy reclaims, makes for the generated output under series model and comparatively reasonably distributing.
Summary of the invention
The problem to be solved in the present invention is that prior art fails, when existing vehicle traction power demand has again the demand to power cell forced charge and reclaims at vehicle braking energy, the generated output under hybrid vehicle series model is made rational distribution.
For solving the problem, technical solution of the present invention provides the apportioning method of generated output under a kind of hybrid vehicle series model, comprise: under the propulsion source of hybrid vehicle is in series model, ISG generated output is distributed, and priority allocation TM generated output is for power battery charging when carrying out Brake energy recovery according to the priority of vehicle traction power demand and power battery charging power demand.
Optionally, the described priority distribution ISG generated output according to driving power demand and power battery charging power demand comprises: if when there is described vehicle traction power demand and power battery charging power demand simultaneously, then preferential being allocated in by described ISG generated output meets described vehicle traction power demand, then takes into account described power battery charging power demand.
Optionally, described preferential being allocated in by described ISG generated output meets described vehicle traction power demand, then takes into account described power battery charging power demand and comprises:
When ISG generated output is not enough to meet consumed power demand three's sum of vehicle traction power demand, power battery charging power demand and car accessories, after meeting the consumed power demand of described car accessories, first meet described vehicle traction power demand, then the ISG generated output of remainder is allocated in meets described power battery charging power demand;
If the power of vehicle traction power demand increases, then the charge power reducing power cell is to meet vehicle traction power demand.
Optionally, the described priority distribution ISG generated output according to vehicle traction power demand and power battery charging power demand also comprises:
If there is not described vehicle traction power demand and power battery charging power demand, but when there is the consumed power demand of car accessories, then described ISG generated output is allocated in the consumed power demand meeting described car accessories;
If there is not described vehicle traction power demand, and when there is described power battery charging power demand, then described ISG generated output is allocated in and meets described power battery charging power demand;
If there is described vehicle traction power demand, and there is not described power battery charging power demand, but when there is the consumed power demand of car accessories, then the discharge power of described ISG generated output and power cell is allocated in jointly the consumed power demand meeting described vehicle traction power demand and car accessories;
If there is described vehicle traction power demand, and there is not described power battery charging power demand, but when the discharge capability of power cell is not enough to the power meeting vehicle traction power demand, then distributes described ISG generated output and compensate.
Optionally, described when carrying out Brake energy recovery priority allocation TM generated output comprise for power battery charging: when carrying out Brake energy recovery, when the available charge power of power cell be less than TM generated output and ISG motor can by generated output sum time, then reduce described ISG generated output, TM generated output described in priority allocation is used for power battery charging, makes described ISG generated output and TM generated output and equals the available charge power of described power cell.
For solving the problem, technical solution of the present invention also provides the distribution device of generated output under a kind of hybrid vehicle series model, comprising:
First allocation units, are suitable under the propulsion source of hybrid vehicle is in series model, according to the priority distribution ISG generated output of vehicle traction power demand and power battery charging demand;
2nd allocation units, are suitable under the propulsion source of hybrid vehicle is in series model, and when carrying out Brake energy recovery, priority allocation TM generated output is for power battery charging.
Compared with prior art, the technical scheme of the present invention at least has the following advantages:
By by the calculating when distribution of generated output between power battery charging demand and these two kinds of demands of vehicle traction power demand and Brake energy recovery, the control method of the propulsion source optimizing hybrid vehicle under series model, namely under considering the operating mode of vehicle traction power demand and power battery charging power demand under series model, preferentially meet vehicle power demand to distribute generated output, thus ensure certain power performance, and priority allocation TM generated output then can obtain better economy for power battery charging when carrying out Brake energy recovery.
Accompanying drawing explanation
Fig. 1 be the embodiment of the present invention hybrid vehicle series model under the schematic flow sheet of apportioning method of generated output;
Fig. 2 be the embodiment of the present invention existing vehicle traction power demand again dynamic battery forced charge power demand time series model under ISG generated output distribution schematic diagram;
Fig. 3 is the schematic diagram of ISG and the TM generated output distribution under series model when Brake energy recovery of the embodiment of the present invention.
Embodiment
Under prior art is not in series model with regard to the propulsion source of hybrid vehicle, when existing vehicle traction power demand has again the demand to power cell forced charge (SOC is very low) and reclaims at vehicle braking energy, the generated output of hybrid vehicle is made and comparatively reasonably distributes, therefore easily cause vehicle under some operating mode be short of power or cannot the SOC balance of conservative control power cell, and better economy can not be obtained when carrying out Brake energy recovery under series model.
For solving the problem, technical solution of the present invention provides the series connection power allocation scheme preferentially meeting vehicle traction power demand and preferential energy recovery when a kind of plug-in hybrid-power automobile generates electricity under series model. Under series model, by considering the priority of vehicle traction power demand and power battery charging power demand, properly distributed generated output, preferentially meet vehicle power demand, thus under avoiding some operating mode vehicle be short of power or cannot conservative control power cell SOC balance, and priority allocation TM generated output is for power battery charging when carrying out Brake energy recovery, better economy thus can be obtained.
Therefore, under the hybrid vehicle series model that technical solution of the present invention provides, the apportioning method of generated output comprises: under the propulsion source of hybrid vehicle is in series model, according to the priority distribution ISG generated output of vehicle traction power demand and power battery charging power demand, and priority allocation TM generated output is for power battery charging when carrying out Brake energy recovery.
For enabling above-mentioned purpose, the feature and advantage of the present invention more become apparent, below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.
As stated in the Background Art, usually when lower at power cell SOC or power cell discharge capability is not enough, the propulsion source of hybrid vehicle can enter series model, for power battery charging or provides discharge power to TM motor for driving vehicle by driven by engine ISG electric power generation. In the present embodiment, the power that ISG electric power generation exports is called ISG generated output, the charge power that the power charged by power cell is called power cell, is called TM generated output by the generated output of offer when carrying out energy recovery by TM motor during braking. In the present embodiment, under described series model, the distribution of generated output comprises vehicle and is under driving pattern ISG generated output and divides to be used in and drive vehicle and for power battery charging, when being also included in Brake energy recovery, distribute described ISG generated output and TM generated output for power battery charging.
In the present embodiment, it is by the consumed power demand sum of vehicle traction power demand (resolving by the degree of depth of gas pedal and the speed of a motor vehicle), power battery charging power demand (according to battery electricity how many and ambient conditions calculate) and car accessories for the calculating of described ISG generated output, and limits by conditions such as the power generation capacity of ISG motor, the available charge powers of power cell and obtain. Such as, when the power generation capacity of ISG motor is not enough to meet consumed power demand three's sum of vehicle traction power demand, power battery charging power demand and car accessories, then described ISG generated output is determined by the power generation capacity of ISG motor, now cannot all meet above-mentioned each demand.
Consider when reality is implemented, for car accessories consumed power demand be generally do not exist need distribution problem, therefore, in the present embodiment, under described hybrid vehicle series model, the distribution of generated output is the situation that cannot simultaneously meet vehicle traction power demand and power battery charging power demand based on ISG generated output. In addition, present inventor also considers and as a part for generated output under series model, thus originally can also be realized for meeting the ISG generated output of power battery charging power demand by adjusting by the generated output of TM motor when Brake energy recovery.
In addition, under some Special Circumstances, even if the SOC of power cell is very high, charge power is restricted, but because some annex on hybrid vehicle exists bigger power demand, such as, when receiving air-conditioning heat request, the propulsion source control of hybrid vehicle also can be made to enter series model.
In the present embodiment, under the propulsion source of hybrid vehicle is in series model, first performs step S1, judge currently be in which kind of series model. Owing to there is the operating mode of number of different types when the propulsion source of hybrid vehicle is in series model, different series models should take corresponding strategy to go the distribution of generated output under series model.
Composition graphs 1, the following is the specific strategy that various series model issues electrical power distribution:
If there is not vehicle traction power demand and power battery charging power demand, but when there is the consumed power demand of car accessories, then perform step S21, ISG generated output is allocated in the consumed power demand meeting car accessories. Specifically, if there is no vehicle traction power demand, such as gearbox gear-shift shelves position is in park position (P shelves) or neutral gear (N shelves), and without the charging demand to power cell, such as SOC is very high, charging restricted, but enter series model because of air-conditioning heat request condition, now ISG generated output is only for meeting the consumed power demand of car accessories.
If when there is not vehicle traction power demand and there is power battery charging power demand, then perform step S22, ISG generated output is allocated in and meets described power battery charging power demand. Specifically, if not having vehicle traction power demand, such as gearbox shifting shelves position is in P shelves or N shelves, and has the charge power demand to power cell, such as SOC is lower or available discharge power is lower, and now ISG generated output is for meeting the charge power of power cell. It should be noted that, if now also there is the consumed power demand of car accessories, then also should consider to meet ISG generated output the consumed power demand of car accessories simultaneously.
If there is vehicle traction power demand and there is not power battery charging power demand, but when there is the consumed power demand of car accessories, then perform step S23, the discharge power of ISG generated output and power cell is allocated in jointly the consumed power demand meeting vehicle traction power demand and car accessories. Specifically, if when having vehicle traction power demand, such as gearbox shifting shelves position is in advance shelves (D shelves) or reverse drive gear (R shelves), and without the charging demand to power cell, such as SOC is very high, charge power is restricted, but enters series model because of air-conditioning heat request condition, then the discharge power of ISG generated output and power cell meets the consumed power demand of vehicle traction power demand and car accessories jointly. It should be noted that, under this kind of series model, assume to use merely ISG generated output can meet the consumed power demand of vehicle traction power demand and car accessories, if but the electricity of power cell is sufficient, then when reality is implemented except utilizing ISG generated output, also need to utilize the discharge power of power cell, otherwise automobile dynamic system inefficiency will be made.
If there is vehicle traction power demand and there is not power battery charging power demand, but when the discharge capability of power cell is not enough to the power meeting vehicle traction power demand, then performing step S24, distribution ISG generated output compensates.Specifically, if there being vehicle traction power demand, without the charging demand to power cell, such as SOC is higher, and the scarce capacity of power cell to meet the power of vehicle traction power demand time, the power then generated electricity by ISG to compensate power cell scarce capacity to meet vehicle traction power demand, thus be unlikely to cause car to be short of power when power cell discharge capability deficiency.
If when there is described vehicle traction power demand and power battery charging power demand simultaneously, then perform step S25, preferentially ISG generated output is allocated in and meets vehicle traction power demand, then take into account the charge power of power cell. Specifically, if there being vehicle traction power demand, power cell has the demand of forced charge, such as SOC is very low, so ISG generated output should meet power battery charging power demand, meets vehicle traction power demand again, if when ISG generated output is not enough to the consumed power meeting vehicle traction power demand, power battery charging power demand and car accessories simultaneously, then preferentially meet vehicle traction power demand such that it is able to ensure certain power performance.
If when carrying out Brake energy recovery, then performing step S26, priority allocation TM generated output is used for power battery charging. Specifically, if vehicle slows down and carries out Brake energy recovery, when power cell can with charge power be less than TM generated output and ISG motor can by generated output sum time, then reduce the generated output of ISG motor, TM generated output described in priority allocation is used for power battery charging, make the generated output of ISG motor and TM generated output sum equal the available charge power of described power cell, thus obtain better economy. In the present embodiment, described power cell can refer to the maximum charge power that power cell is currently allowed with charge power; Described ISG motor can refer to, with generated output, the maximum generation power that ISG motor can provide.
It should be noted that, in the series model of above-mentioned six types, under when dynamic battery forced charge demand " existing vehicle traction power demand again " and " when Brake energy recovery " these two kinds of operating modes, apportioning method for generated output is distinguished to some extent with prior art, therefore the concrete enforcement of the generated output apportioning method under these two kinds of operating modes is further described below in conjunction with specific experiment data.
Fig. 2 be the embodiment of the present invention existing vehicle traction power demand again dynamic battery forced charge power demand time generated output distribution schematic diagram. Fig. 3 is the schematic diagram of the distribution of the generated output when Brake energy recovery of the embodiment of the present invention. The experimental data that Fig. 2 and Fig. 3 draws for the apportioning method of generated output under the hybrid vehicle series model that provides based on the embodiment of the present invention, reflects under series model various types of power (charge power of the power of vehicle traction power demand, ISG generated output and power cell) situation over time. Wherein, to be power coordinate, line 205 the be time coordinate of the line 201 in Fig. 2, line 203 to be the charge power of power cell, line 202 be ISG generated output, line 204 are the power of TM electrical consumption, are also exactly the power meeting vehicle traction power demand; In Fig. 3 301 to be power coordinate, line 305 be time coordinate, line 302 are the charge power of power cell, line 303 is ISG generated output, line 304 is TM generated output.
As shown in Figure 2, under series model when ISG electric power generation, if there being vehicle traction power demand, and ISG generated output is when being not enough to meet consumed power demand three's sum of vehicle traction power demand, power battery charging power demand and car accessories, ISG generated output should meet the charge power demand of power cell, meet vehicle traction power demand again, then preferentially meet vehicle traction power demand such that it is able to ensure certain power performance.As can see from Figure 2, ISG generated output cannot increase (such as Fig. 2 line 202) by some conditions restriction ISG power generation capacity, when the power (power of vehicle traction power demand) of TM consumption increases (as shown in Fig. 2 line 204), the charge power of power cell reduces (as shown in Fig. 2 center line 203). That is, when the power of vehicle traction power demand increases time, reduce the power charged by power cell to meet vehicle traction power demand, thus ensure certain vehicle traction.
Therefore, in the present embodiment, described preferential being allocated in by described ISG generated output meets described vehicle traction power demand, then take into account described power battery charging power demand specifically can comprise: when ISG generated output is not enough to meet consumed power demand three's sum of vehicle traction power demand, power battery charging power demand and car accessories, after meeting the consumed power demand of described car accessories, first meet described vehicle traction power demand, then the ISG generated output of remainder is allocated in meets described power battery charging power demand; If the power of vehicle traction power demand increases, then the charge power reducing power cell is to meet vehicle traction power demand.
As shown in Figure 3, if vehicle slows down carries out Brake energy recovery, now priority allocation TM generated output is used for power battery charging, so can carry out energy recovery more thus obtain better economy. Under this operating mode, carrying out Brake energy recovery by TM motor, now the charge power (as shown in Fig. 3 center line 302) of power cell equals ISG generated output (as shown in Fig. 3 center line 303) and TM generated output (as shown in Fig. 3 center line 304) sum. As can be seen from Figure 3, when carrying out Brake energy recovery, priority allocation TM generated output is carried out for power battery charging by reducing ISG generated output.
Therefore, in the present embodiment, described when carrying out Brake energy recovery priority allocation TM generated output specifically can comprise for power battery charging: when carrying out Brake energy recovery, when power cell can with charge power be less than TM generated output and ISG motor can by generated output sum time, reduce described ISG generated output, TM generated output described in priority allocation is used for power battery charging, makes described ISG generated output and TM generated output sum equal the available charge power of described power cell.
In sum, the apportioning method of generated output under the hybrid vehicle series model that the embodiment of the present invention provides, optimize generated output distribution algorithm when distribution between power battery charging and these two kinds of demands of vehicle traction power demand of generated output under series model and Brake energy recovery: under considering the operating mode of vehicle traction power demand and power battery charging power demand under series model, preferentially meet vehicle power demand to distribute ISG generated output, thus ensure certain power performance, and carry out Brake energy recovery distribute TM generated output and then can obtain better economy for power battery charging.
Corresponding to the apportioning method of generated output under above-mentioned hybrid vehicle series model, the present embodiment also provides the distribution device of generated output under a kind of hybrid vehicle series model. Under described hybrid vehicle series model, the distribution device of generated output comprises: the first allocation units, be suitable under the propulsion source of hybrid vehicle is in series model, according to the priority distribution ISG generated output of vehicle traction power demand and power battery charging power demand;2nd allocation units, are suitable under the propulsion source of hybrid vehicle is in series model, are carrying out Brake energy recovery distribute TM generated output for power battery charging.
In the specific implementation, described first allocation units can comprise: the first distribution subelement, be suitable for when there is described vehicle traction power demand and power battery charging power demand simultaneously, preferential being allocated in by described ISG generated output meets described vehicle traction power demand, then takes into account described power battery charging power demand. In actual implementation process, described first distribution subelement is when ISG generated output is not enough to meet consumed power demand three's sum of vehicle traction power demand, power battery charging power demand and car accessories, after meeting the consumed power demand of described car accessories, first meet described vehicle traction power demand, again the ISG generated output of remainder is allocated in and meets described power battery charging power demand, if the power of vehicle traction power demand increases, then the charge power reducing power cell is to meet vehicle traction power demand.
In addition, described first allocation units can also comprise: the 2nd distribution subelement, be suitable for there is described vehicle traction power demand and power battery charging power demand, but when there is the consumed power demand of car accessories, described ISG generated output is allocated in the consumed power demand meeting car accessories; 3rd distribution subelement, is suitable for there is described vehicle traction power demand, and when there is described power battery charging power demand, is allocated in by described ISG generated output and meets described power battery charging power demand; 4th distribution subelement, be suitable for when there is described vehicle traction power demand, and there is not described power battery charging power demand, but when there is the consumed power demand of car accessories, the discharge power of described ISG generated output and power cell is allocated in jointly the consumed power demand meeting described vehicle traction power demand and car accessories; 5th distribution subelement, be suitable for when there is described vehicle traction power demand, and there is not described power battery charging power demand, but when the discharge capability of power cell is not enough to the power meeting vehicle traction power demand, distributes described ISG generated output and compensate.
In the present embodiment, described 2nd allocation units distribution T M generated output is used for power battery charging and specifically can realize in the following way: when carrying out Brake energy recovery, when the available charge power of power cell be less than TM generated output and ISG motor can by generated output sum time, reduce described ISG generated output, TM generated output described in priority allocation is used for power battery charging, makes described ISG generated output and TM generated output sum equal the available charge power of described power cell.
Under described hybrid vehicle series model, the concrete enforcement of the distribution device of generated output with reference to the enforcement of the apportioning method of generated output under the hybrid vehicle series model described in the present embodiment, can repeat no more herein.
It will be appreciated by those skilled in the art that, the all or part of of distribution device realizing generated output under hybrid vehicle series model in above-described embodiment can be completed by the hardware that program carrys out instruction relevant, described program can be stored in computer-readable recording medium, and described storage media can be ROM, RAM, magnetic disc, CD etc.
Although present disclosure is as above, but the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (10)
1. the apportioning method of generated output under a hybrid vehicle series model, it is characterised in that, comprising:
Under the propulsion source of hybrid vehicle is in series model, according to the priority distribution ISG generated output of vehicle traction power demand and power battery charging power demand, and priority allocation TM generated output is for power battery charging when carrying out Brake energy recovery.
2. the apportioning method of generated output under hybrid vehicle series model according to claim 1, it is characterised in that, the described priority distribution ISG generated output according to vehicle traction power demand and power battery charging power demand comprises:
If when there is described vehicle traction power demand and power battery charging power demand simultaneously, then preferential being allocated in by described ISG generated output meets described vehicle traction power demand, then takes into account described power battery charging power demand.
3. the apportioning method of generated output under hybrid vehicle series model according to claim 2, it is characterized in that, described preferential being allocated in by described ISG generated output meets described vehicle traction power demand, then takes into account described power battery charging power demand and comprises:
When ISG generated output is not enough to meet consumed power demand three's sum of vehicle traction power demand, power battery charging power demand and car accessories, after meeting the consumed power demand of described car accessories, first meet described vehicle traction power demand, then the ISG generated output of remainder is allocated in meets described power battery charging power demand;
If the power of vehicle traction power demand increases, then the charge power reducing power cell is to meet vehicle traction power demand.
4. the apportioning method of generated output under hybrid vehicle series model according to claim 2, it is characterised in that, the described priority distribution ISG generated output according to vehicle traction power demand and power battery charging power demand also comprises:
If there is not described vehicle traction power demand and power battery charging power demand, but when there is the consumed power demand of car accessories, then described ISG generated output is allocated in the consumed power demand meeting described car accessories;
If there is not described vehicle traction power demand, and when there is described power battery charging power demand, then described ISG generated output is allocated in and meets described power battery charging power demand;
If there is described vehicle traction power demand, and there is not described power battery charging power demand, but when there is the consumed power demand of car accessories, then the discharge power of described ISG generated output and power cell is allocated in jointly the consumed power demand meeting described vehicle traction power demand and car accessories;
If there is described vehicle traction power demand, and there is not described power battery charging power demand, but when the discharge capability of power cell is not enough to the power meeting vehicle traction power demand, then distributes described ISG generated output and compensate.
5. the apportioning method of generated output under hybrid vehicle series model according to claim 1, it is characterized in that, described when carrying out Brake energy recovery priority allocation TM generated output comprise for power battery charging: when carrying out Brake energy recovery, if the available charge power of power cell is less than TM generated output and ISG motor can use generated output sum, then reduce described ISG generated output, TM generated output described in priority allocation is used for power battery charging, described ISG generated output and TM generated output sum is made to equal the available charge power of described power cell.
6. the distribution device of generated output under a hybrid vehicle series model, it is characterised in that, comprising:
First allocation units, are suitable under the propulsion source of hybrid vehicle is in series model, according to the priority distribution ISG generated output of vehicle traction power demand and power battery charging power demand;
2nd allocation units, are suitable under the propulsion source of hybrid vehicle is in series model, and when carrying out Brake energy recovery, priority allocation TM generated output is for power battery charging.
7. the distribution device of generated output under hybrid vehicle series model according to claim 6, it is characterized in that, described first allocation units comprise: the first distribution subelement, be suitable for when there is described vehicle traction power demand and power battery charging power demand simultaneously, preferential being allocated in by described ISG generated output meets described vehicle traction power demand, then takes into account described power battery charging power demand.
8. the distribution device of generated output under hybrid vehicle series model according to claim 7, it is characterized in that, described first distribution subelement is when ISG generated output is not enough to meet consumed power demand three's sum of vehicle traction power demand, power battery charging power demand and car accessories, after meeting the consumed power demand of described car accessories, first meet described vehicle traction power demand, then the ISG generated output of remainder is allocated in meets described power battery charging power demand; If the power of vehicle traction power demand increases, then the charge power reducing described power cell is to meet vehicle traction power demand.
9. the distribution device of generated output under hybrid vehicle series model according to claim 7, it is characterised in that, described first allocation units also comprise:
2nd distribution subelement, is suitable for there is described vehicle traction power demand and power battery charging power demand, but when there is the consumed power demand of car accessories, described ISG generated output is allocated in the consumed power demand meeting described car accessories;
3rd distribution subelement, is suitable for there is described vehicle traction power demand, and when there is described power battery charging power demand, is allocated in by described ISG generated output and meets described power battery charging power demand;
4th distribution subelement, be suitable for when there is described vehicle traction power demand, and there is not described power battery charging power demand, but when there is the consumed power demand of car accessories, the discharge power of described ISG generated output and power cell is allocated in jointly the consumed power demand meeting described vehicle traction power demand and car accessories;
5th distribution subelement, be suitable for when there is described vehicle traction power demand, and there is not described power battery charging power demand, but when the discharge capability of power cell is not enough to the power meeting vehicle traction power demand, distributes described ISG generated output and compensate.
10. the distribution device of generated output under hybrid vehicle series model according to claim 6, it is characterized in that, described 2nd allocation units are when carrying out Brake energy recovery, when the available charge power of power cell be less than TM generated output and ISG motor can by generated output sum time, reduce described ISG generated output, TM generated output described in priority allocation is used for power battery charging, makes described ISG generated output and TM generated output sum equal the available charge power of described power cell.
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Cited By (7)
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| CN109572675A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Hybrid vehicle and its electricity-generating control method and device |
| CN110182052A (en) * | 2019-04-15 | 2019-08-30 | 汉腾汽车有限公司 | A kind of control strategy of automobile power cell operating status |
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