CN107433856B - Energy management method and system for pure electric vehicle - Google Patents
Energy management method and system for pure electric vehicle Download PDFInfo
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- CN107433856B CN107433856B CN201610350150.4A CN201610350150A CN107433856B CN 107433856 B CN107433856 B CN 107433856B CN 201610350150 A CN201610350150 A CN 201610350150A CN 107433856 B CN107433856 B CN 107433856B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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Abstract
The invention provides a pure electric vehicle energy management method and a system, wherein the method comprises the following steps: judging an energy supply mode of a whole vehicle system; if the energy required by the whole vehicle system is provided by the power battery, energy distribution is carried out on the whole vehicle energy consumption components according to the first energy consumption priority sequence; if the energy required by the whole vehicle system is provided by the power battery and the motor together, energy distribution is carried out on the whole vehicle energy consumption components according to the second energy consumption priority sequence; if the energy required by the whole vehicle system is provided by the motor, energy distribution is carried out on the whole vehicle energy consumption components according to the third energy consumption priority sequence; if the vehicle is in the slow charging mode, controlling the maximum charging power of a charger to be first preset power, and controlling the consumed power of an air conditioner to be second preset power; and if the vehicle is in the quick charging mode, controlling the maximum charging power of the charger to be third preset power. The invention can save energy, improve the driving range of the vehicle and improve the comfort of the whole vehicle.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a pure electric vehicle energy management method and system.
Background
The pure electric vehicle takes the power battery as a whole power source, and better dynamic property and longer endurance mileage are main indexes for measuring the performance of the electric vehicle, but are limited by the development conditions of the current power battery technology, including the problems of cost, weight, capacity and the like, so that reasonable utilization of energy becomes a key research direction of the pure electric vehicle technology, and the maximum requirements of customers are met by using limited energy. The pure electric automobile drives the power system assembly to work by taking the power battery as an energy source, so that the pure electric automobile is driven to move forward, meanwhile, the power battery and the low-voltage storage battery are jointly supplied to other electrical components on the pure electric automobile to work, and the safety of the whole pure electric automobile and the comfort of customers are met. The energy supply device on the pure electric vehicle is a power battery, and the energy consumption device comprises a driving motor, an air conditioner, various controllers and other comfortable accessories.
However, at present, energy distribution is performed on energy consumption components of the whole vehicle through a simple energy management strategy, namely, when the supply capacity is insufficient, some high-voltage accessories are directly closed.
Disclosure of Invention
In view of this, the present invention is directed to a method for energy management of a pure electric vehicle, which can save energy, improve a driving range of the vehicle, and improve a comfort of the entire vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a pure electric vehicle energy management method comprises the following steps: judging an energy supply mode of a whole vehicle system; if the energy required by the whole vehicle system is only provided by a power battery, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a first energy consumption priority sequence from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the first energy consumption priority sequence, wherein the first energy consumption priority sequence is as follows: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the motor drives and consumes energy, the air conditioner consumes energy and the comfortable accessory consumes energy; if the energy required by the whole vehicle system is provided by the power battery and the motor together, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a second energy consumption priority sequence from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the second energy consumption priority sequence, wherein the second energy consumption priority sequence is as follows: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the air conditioner consumes energy and the comfortable accessory consumes energy; if the energy required by the whole vehicle system is only provided by the motor, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a third energy consumption priority order from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the third energy consumption priority order, wherein the third energy consumption priority order is as follows: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the air conditioner consumes energy, the comfortable accessory consumes energy and the power battery charges and consumes energy; if the vehicle is in a slow charging mode, controlling the maximum charging power of a charger to be first preset power, controlling the consumed power of an air conditioner to be second preset power, and limiting the cooling consumed power of the power battery; and if the vehicle is in a quick charging mode, controlling the maximum charging power of the charger to be third preset power, and limiting the power consumption of all energy consumption components of the whole vehicle.
Further, the energy distribution of the entire vehicle energy consumption components according to the first energy consumption priority order includes: the power consumption of the controller, the power consumption of the defrosting/defogging device, and the battery cooling power consumption are not limited;
the limit value of the motor driving power is as follows:
Pmc＝min{(Pbat-Pcontrol-Pfog),(PL/ηmc)}，
the limit value of the consumed power of the air conditioner is as follows:
PAC＝min{PACReq,Pbat-(Pfog+Pcontrol+Pcool)}，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC,Pfog}，
the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，Pbat-(Pmc+Pcontrol+Pcool)-PAC}
Wherein, PLPower required to be output for the motor, ηmcFor efficiency of energy conversion, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesA requested power for the comfort accessory.
Further, the energy distribution of the entire vehicle energy consumption components according to the second energy consumption priority order includes: the power consumption of the controller, the power consumption of the defrosting/defogging device and the battery cooling power consumption are not limited;
the limit value of the consumed power of the air conditioner is as follows:
PAC＝min{PACReq,(Pbat+P′mc-(Pcool+Pfog+Pcontrol)}，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC,Pfog}，
the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，(Pbat+P′mc-(Pcool+Pfog+Pcontrol+PAC))}，
Wherein, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesIs requested Power, P 'of the comfort Accessories'mcAnd recovering power for the motor energy.
Further, the energy distribution of the entire vehicle energy consumption components according to the third energy consumption priority order includes: the power consumption of the controller and the power consumption of the defrosting/defogging device are not limited;
the maximum charging power of the power battery is as follows:
P′bat＝(Ibat*Vbat)/η′bat，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC_feedback,Pfog}，
the maximum energy recovery power of the motor is as follows:
P′mc＝P′bat+PAC+Paccessories+Pcontrol，
Wherein, IbatCharging the power battery with the maximum allowable current; vbatη 'is the battery voltage'bat: for charging energy conversion efficiency, PAC_feedbackActual consumed power, P 'for air conditioner feedback'mcIs the maximum energy recovery power, P 'of the electric machine'batIs the maximum charging power, P, of the power batteryfogFor power consumption of defrosting/demisting arrangements, PACFor air-conditioning power consumption limit, PAccessoriesIs the power consumption of the comfort accessory, PcontrolConsuming power for the controller.
Further, the first preset power is 3.3 kilowatts, and the third preset power is 30 kilowatts.
Compared with the prior art, the energy management method of the pure electric vehicle has the following advantages:
according to the energy management method for the pure electric vehicle, the energy supply mode of the vehicle at present is analyzed, and corresponding control strategies and control flows are formulated according to different energy supply modes to distribute energy to energy consumption components of the whole vehicle, so that overcurrent faults of a motor and a power battery can be prevented, the safety of the whole vehicle is improved, energy can be saved, the driving range of the vehicle is improved, the comfort performance of the whole vehicle is considered, and the comfort of the whole vehicle is improved.
Another object of the present invention is to provide an energy management system for a pure electric vehicle, which can save energy, increase the driving range of the vehicle, and improve the comfort of the entire vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a pure electric vehicle energy management system, comprising: the judging module is used for judging the functional mode of the whole vehicle system; the control module is used for sequentially arranging the energy consumption of the whole vehicle energy consumption components into a first energy consumption priority sequence from high to low according to the priority when the energy required by the whole vehicle system is only provided by a power battery, and performing energy distribution on the whole vehicle energy consumption components according to the first energy consumption priority sequence, wherein the first energy consumption priority sequence is as follows: controller power consumption, power battery cooling power consumption, defrosting/defogging device power consumption, motor drive power consumption, air conditioner power consumption and comfortable annex power consumption and be in the required energy of whole car system by when power battery and motor provided jointly, arrange the energy consumption of whole car power consumption components and parts into second energy consumption priority order by high to low according to the priority, and according to second energy consumption priority order is right whole car power consumption components and parts carry out energy distribution, wherein, second energy consumption priority order is: the controller consumes energy, power battery cooling consumes energy, defrosting/defogging device consumes energy, air conditioner consumes energy and comfortable annex power consumption and be in the energy that whole car system needs only by when the motor provided, arrange the energy consumption of whole car power consumption components and parts in proper order into third energy consumption priority order by high to low according to the priority, and according to the third energy consumption priority order is right whole car power consumption components and parts carry out energy distribution, wherein, the third energy consumption priority order is: the energy consumption of the controller, the cooling energy consumption of the power battery, the energy consumption of the defrosting/defogging device, the energy consumption of the air conditioner, the energy consumption of the comfortable accessories and the charging energy consumption of the power battery are controlled, when the vehicle is in a slow charging mode, the maximum charging power of the charger is controlled to be first preset power, the consumed power of the air conditioner is controlled to be second preset power, the cooling consumed power of the power battery is not limited, when the vehicle is in a fast charging mode, the maximum charging power of the charger is controlled to be third preset power, and the consumed power of all energy consumption components of the whole vehicle is not limited.
Further, the control module performs energy distribution on the entire vehicle energy consumption components according to the first energy consumption priority order, and the energy distribution method includes: the power consumption of the controller, the power consumption of the defrosting/defogging device, and the battery cooling power consumption are not limited;
the limit value of the motor driving power is as follows:
Pmc＝min{(Pbat-Pcontrol-Pfog),(PL/ηmc)}，
the limit value of the consumed power of the air conditioner is as follows:
PAC＝min{PACReq,Pbat-(Pfog+Pcontrol+Pcool)}，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC,Pfog}，
the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，Pbat-(Pmc+Pcontrol+Pcool)-PAC}
Wherein, PLPower required to be output for the motor, ηmcFor efficiency of energy conversion, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesA requested power for the comfort accessory.
Further, the control module performs energy distribution on the entire vehicle energy consumption components according to the second energy consumption priority order, and the energy distribution method includes: the power consumption of the controller, the power consumption of the defrosting/defogging device and the battery cooling power consumption are not limited;
the limit value of the consumed power of the air conditioner is as follows:
PAC＝min{PACReq,(Pbat+P′mc-(Pcool+Pfog+Pcontrol)}，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC,Pfog}，
the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，(Pbat+P′mc-(Pcool+Pfog+Pcontrol+PAC))}，
Wherein, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesIs requested Power, P 'of the comfort Accessories'mcAnd recovering power for the motor energy.
Further, the control module performs energy distribution on the entire vehicle energy consumption components according to the third energy consumption priority order, and the energy distribution method includes: the power consumption of the controller and the power consumption of the defrosting/defogging device are not limited;
the maximum charging power of the power battery is as follows:
P′bat＝(Ibat*Vbat)/η′bat，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC_feedback,Pfog}，
the maximum energy recovery power of the motor is as follows:
P′mc＝P′bat+PAC+Paccessories+Pcontrol，
Wherein, IbatCharging the power battery with the maximum allowable current; vbatη 'is the battery voltage'bat: for charging energy conversion efficiency, PAC_feedbackActual consumed power, P 'for air conditioner feedback'mcIs the maximum energy recovery power, P 'of the electric machine'batIs the maximum charging power, P, of the power batteryfogFor power consumption of defrosting/demisting arrangements, PACFor air-conditioning power consumption limit, PAccessoriesIs the power consumption of the comfort accessory, PcontrolConsuming power for the controller.
Further, the first preset power is 3.3 kilowatts, and the third preset power is 30 kilowatts.
Compared with the prior art, the pure electric vehicle energy management system and the pure electric vehicle energy management method have the same advantages, and are not described herein again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flowchart of a pure electric vehicle energy management method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first energy consumption priority sequence according to an embodiment of the invention;
FIG. 3 is a schematic power distribution diagram of one embodiment of the present invention when powered solely by power cells;
FIG. 4 is a second energy consumption priority sequence of one embodiment of the present invention;
FIG. 5 is a schematic diagram of the power distribution when powered by both a power battery and an electric motor according to one embodiment of the present invention;
FIG. 6 is a third energy consumption priority scheme according to an embodiment of the present invention;
FIG. 7 is a schematic power distribution diagram of one embodiment of the present invention when powered by only the motor; and
fig. 8 is a block diagram of a structure of a pure electric vehicle energy management system according to an embodiment of the present invention.
Description of reference numerals:
100-pure electric vehicle energy management system, 110-judgment module and 120-control module.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
FIG. 1 is a flowchart of a method for energy management of a pure electric vehicle according to an embodiment of the present invention.
As shown in fig. 1, the energy management method for the pure electric vehicle according to the embodiment of the present invention includes the following steps:
step S1: and judging the energy supply mode of the whole vehicle system.
Step S2: if the energy required by the whole vehicle system is only provided by the power battery, namely the power battery independently supplies the energy consumption of the whole vehicle system, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a first energy consumption priority order from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the first energy consumption priority order, wherein the first energy consumption priority order is as follows: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the motor drives and consumes energy, the air conditioner consumes energy and the comfortable accessory consumes energy. In other words, when the power battery alone supplies the energy consumption of the entire vehicle system, the energy consuming components of the entire vehicle related to the energy consumption include a motor, an air conditioner, various controllers, comfort accessories, and the like. In the energy distribution process, the energy consumption priorities of the energy consumption components of the whole vehicle are distributed, as shown in fig. 2, that is, the energy consumption priorities are in the first order. The energy flow in this mode is shown by the black arrows in fig. 3. At the moment, the power battery drives the vehicle to move, and supplies energy to other energy consumption components.
In an embodiment of the present invention, the allocating energy to the entire vehicle energy consuming components according to the first energy consumption priority order includes: first, according to the allocation of a first priority order of energy consumption, Pcontrol、Pfog、PcoolIs highest, and thus the required power is not limited, i.e., the power consumption of the controller, the power consumption of the defrosting/defogging device, and the battery cooling power consumption are not limitedAnd (5) preparing. To be specific, PfogOnly active when the defogging/defrost switch is on.
Motor drive power limit (P)mc) The power (P) required to be output for the current battery residual power and the motorL) Divided by energy conversion efficiency ηmcWherein η, whereinmcThe motor drive power limit is calculated as follows:
Pmc＝min{(Pbat-Pcontrol-Pfog),(PL/ηmc)}，
the limiting power of the air conditioner is the total power output by the battery minus the power consumption (P) of the three energy consumption componentscontrol、Pfog、Pcool) And the residual power and the required power of the air conditioner are the minimum value to determine the power limit value of the air conditioner, and the specific calculation formula is as follows:
PAC＝min{PACReq,Pbat-(Pfog+Pcontrol+Pcool)}，
when the defrost/defog device is activated, i.e., when the defrost/defog switch is active, the power requirement for defrost defogging is maximized to meet the defrost/defog function. Specifically, the power consumption of the defrosting/defogging device is:
Pfog＝max{PAC,Pfog}，
wherein the required power P of the air conditionerACReqAt this time, the SOC electric quantity of the power battery, the current gear and the desire degree of the customer for the air conditioner are obtained by looking up a table, wherein the looked-up table is a calibration value and can be calibrated through subsequent needs, and details are not repeated here.
The power consumption of comfort accessories for comfort in vehicles such as seat heating is:
Paccessories＝min{P′Accessories，Pbat-(Pmc+Pcontrol+Pcool)-PAC}，
Wherein, the above PLPower required to be output for the motor, ηmcIn order to achieve an efficiency of energy conversion,Pbatfor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesA requested power for the comfort accessory.
Step S3: if the energy required by the whole vehicle system is provided by the power battery and the motor together, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a second energy consumption priority order from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the second energy consumption priority order, wherein the second energy consumption priority order is as follows: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the air conditioner consumes energy and the comfortable accessory consumes energy. Specifically, under the mode that the power battery and the motor provide energy together, the related energy consumption components of the whole vehicle comprise an air conditioner, various controllers, comfortable accessories and the like, and the energy supply components are the power battery and the motor. In the energy distribution process, the priorities of the energy consuming components are distributed, as shown in fig. 4, that is, the energy trend at this time is shown by black arrows in fig. 5, which is the second energy consumption priority order.
In one embodiment of the invention, energy distribution among the energy consuming components of the entire vehicle is performed according to the second energy consumption priority order, which includes that firstly, in a mode that the power battery and the motor provide energy together, the vehicle is in an energy recovery state, the motor performs energy feedback, but the feedback energy is not enough to supply the current energy consumption of the vehicle, the battery pack is also discharged to supply the energy consumption of the vehicle, at the moment, the power battery is not charged, so the energy conversion efficiency η is realizedmc＝1。
According to a second priority of energy consumption, Pcontrol、Pcool、PfogThe power consumption priority of the controller is highest, and the required power is not limited, i.e. the power consumption of the controller, the power consumption of the defrosting/defogging device, and the battery cooling power consumption are not affectedAnd (4) limiting.
At this time, the motor is in an energy feedback state, the power recovered by the energy is not enough to supply comfortable accessories, and the influence on the power battery is avoided, so that the power is not limited, and the energy recovery power is calculated to be P 'through the energy recovery torque'mc。
The limit value of the consumed power of the air conditioner is the minimum value of the power which can be output by the power battery, the energy recovery power and the power consumed by the controller and the power required by the air conditioner. The specific calculation formula is as follows:
PAC＝min{PACReq,(Pbat+P′mc-(Pcool+Pfog+Pcontrol)}，
when the defrost/defog device is activated, i.e., the defrost/defog switch is active, the power requirement for defrost defogging is maximized to meet the defrost/defog function. Specifically, the power consumption of the defrosting/defogging device is:
Pfog＝max{PAC,Pfog}，
further, the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，(Pbat+P′mc-(Pcool+Pfog+Pcontrol+PAC))}，
Wherein, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesConsumption Power for comfort Accessories, P'AccessoriesRequested Power, P 'for comfort Accessories'mcAnd recovering power for the motor energy.
Step S4: if the energy required by the whole vehicle system is only provided by the motor, namely the energy recovered by the motor can be independently supplied to the vehicle for energy consumption, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a third energy consumption priority order from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the third energy consumption priority order, wherein the third energy consumption priority order is as follows: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the air conditioner consumes energy, the comfortable accessory consumes energy and the power battery charges and consumes energy.
Specifically, for example, when the vehicle decelerates or runs downhill, the motor operates in a regenerative braking state, the energy consumption components of the whole vehicle in this operating mode include an air conditioner, various controllers, comfort accessories, and the like, and the energy supply component is the motor. In the energy distribution process, the priorities of the energy consuming components are distributed, as shown in fig. 6, that is, the energy trend at this time is shown by black arrows in fig. 7, which is a third energy consumption priority order.
In an embodiment of the present invention, the energy distribution of the entire vehicle energy consumption components according to the third energy consumption priority order includes: firstly, a power battery, a comfortable accessory, a controller and an air conditioner belong to energy consumption components, and the consumed power P of the controllercontrolAnd power consumption P of the defrosting/demisting devicefogThe power is not limited. The maximum charging power of the power battery is calculated by the power battery according to the battery electric quantity state at the moment:
P′bat＝(Ibat*Vbat)/η′bat，
wherein, (η'bat＝P′bat/(P′mc-PAC_feedback-Pcontrol–PAccessories-PAC))，
When the defrost/defog device is activated, i.e., the defrost/defog switch is active, the power requirement for defrost defogging is maximized to meet the defrost/defog function. Specifically, the power consumption of the defrosting/defogging device is:
Pfog＝max{PAC_feedback,Pfog}，
further, according to the power required by all the energy consumption components of the whole vehicle, the maximum energy recovery power of the motor is calculated as follows:
P′mc＝P′bat+PAC+Paccessories+Pcontrol，
Wherein, IbatCharging the power battery with the maximum allowable current; vbatη 'is the battery voltage'bat: for charging energy conversion efficiency, PAC_feedbackActual consumed power, P 'for air conditioner feedback'mcIs the maximum energy recovery power, P 'of the electric machine'batIs the maximum charging power, P, of the power batteryfogFor power consumption of defrosting/demisting arrangements, PACFor air-conditioning power consumption limit, PAccessoriesConsumption of power for comfort accessories, PcontrolConsuming power for the controller.
Step S5: and if the vehicle is in a slow charging mode, controlling the maximum charging power of the charger to be first preset power, controlling the consumed power of the air conditioner to be second preset power, and limiting the cooling consumed power of the power battery. Wherein, in one embodiment of the present invention, for example, the first preset power is 3.3 kw. In other words, when the vehicle is slowly charged, the maximum power of the charger is set to be 3.3kw, and considering that the output power of the charger is limited and the battery can be charged when the air conditioner is turned on, therefore, the power requirement of the air conditioner is limited, the limited degree is set as a standard quantity (second preset power), and the energy used by the power battery for cooling and consuming power is not limited.
Step S6: and if the vehicle is in the fast charging mode, controlling the maximum charging power of the charger to be third preset power, and limiting the consumed power of all energy consumption components of the whole vehicle. Wherein, in one embodiment of the present invention, for example, the first preset power is 3.3 kw. In other words, when the vehicle is charged quickly, the maximum charging power of the charger is set to 30kw, and since the charging power is relatively high at this time, all energy consumption is not limited at this time, that is, the power consumption of all energy consumption components of the whole vehicle is not limited.
In summary, according to the energy management method for the pure electric vehicle provided by the embodiment of the invention, the energy supply mode of the vehicle at present is analyzed, and corresponding control strategies and control flows are formulated according to different energy supply modes to distribute energy to energy consumption components of the whole vehicle, so that overcurrent faults of a motor and a power battery can be prevented, the safety of the whole vehicle is improved, energy can be saved, the driving range of the vehicle is improved, the comfort performance of the whole vehicle is considered, and the comfort of the whole vehicle is improved.
Further, as shown in fig. 8, an embodiment of the present invention discloses a pure electric vehicle energy management system 100, including: a decision block 110 and a control block 120.
The judging module 110 is configured to judge a functional mode of the vehicle system.
The control module 120 is configured to, when energy required by the vehicle system is provided only by the power battery, sequentially arrange energy consumption of the vehicle energy consumption components into a first energy consumption priority order from high to low according to the priority, and perform energy distribution on the vehicle energy consumption components according to the first energy consumption priority order, where the first energy consumption priority order is: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the motor drives and consumes energy, the air conditioner consumes energy and the comfortable accessory consumes energy. In other words, when the power battery alone supplies the energy consumption of the entire vehicle system, the energy consuming components of the entire vehicle related to the energy consumption include a motor, an air conditioner, various controllers, comfort accessories, and the like. And in the energy distribution process, distributing the energy consumption priorities of the energy consumption components of the whole vehicle, namely a first energy consumption priority sequence. At the moment, the power battery drives the vehicle to move, and supplies energy to other energy consumption components.
In an embodiment of the present invention, the control module 120 performs energy distribution on the entire vehicle energy consuming components according to the first energy consumption priority order, including: first, according to the allocation of a first priority order of energy consumption, Pcontrol、Pfog、PcoolIs highest, the required power is not limited, i.e. the power consumption of the controller, the power consumption of the defrost/defog unit and the battery cooling power consumption are not limited. To be specific, PfogOnly active when the defogging/defrost switch is on.
Motor drive power limit (P)mc) The power (P) required to be output for the current battery residual power and the motorL) Divided by energyConversion efficiency ηmcWherein η, whereinmcThe motor drive power limit is calculated as follows:
Pmc＝min{(Pbat-Pcontrol-Pfog),(PL/ηmc)}，
the limiting power of the air conditioner is the total power output by the battery minus the power consumption (P) of the three energy consumption componentscontrol、Pfog、Pcool) And the residual power and the required power of the air conditioner are the minimum value to determine the power limit value of the air conditioner, and the specific calculation formula is as follows:
PAC＝min{PACReq,Pbat-(Pfog+Pcontrol+Pcool)}，
when the defrost/defog device is activated, i.e., when the defrost/defog switch is active, the power requirement for defrost defogging is maximized to meet the defrost/defog function. Specifically, the power consumption of the defrosting/defogging device is:
Pfog＝max{PAC,Pfog}，
wherein the required power P of the air conditionerACReqAt this time, the SOC electric quantity of the power battery, the current gear and the desire degree of the customer for the air conditioner are obtained by looking up a table, wherein the looked-up table is a calibration value and can be calibrated through subsequent needs, and details are not repeated here.
The power consumption of comfort accessories for comfort in vehicles such as seat heating is:
Paccessories＝min{P′Accessories，Pbat-(Pmc+Pcontrol+Pcool)-PAC}，
Wherein, the above PLPower required to be output for the motor, ηmcFor efficiency of energy conversion, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor defrosting/removingPower consumption of the mist device, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesA requested power for the comfort accessory.
On the other hand, the control module 120 is configured to, when energy required by the vehicle system is provided by the power battery and the motor together, sequentially arrange energy consumption of the vehicle energy consumption components into a second energy consumption priority order according to the priority from high to low, and perform energy distribution on the vehicle energy consumption components according to the second energy consumption priority order, where the second energy consumption priority order is: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the air conditioner consumes energy and the comfortable accessory consumes energy. Specifically, under the mode that the power battery and the motor provide energy together, the related energy consumption components of the whole vehicle comprise an air conditioner, various controllers, comfortable accessories and the like, and the energy supply components are the power battery and the motor. And in the energy distribution process, distributing the priority of the energy consumption components, namely a second energy consumption priority sequence.
In one embodiment of the present invention, the control module 120 allocates energy to the energy consuming components of the entire vehicle according to the second energy consumption priority order, which includes that, first, in a mode that the power battery and the motor provide energy together, the vehicle is in an energy recovery state, the motor performs energy feedback, but the feedback energy is not enough to supply the current energy consumption of the vehicle, the battery pack is also discharged to supply the energy consumption of the vehicle, and at this time, the power battery is not charged, so the energy conversion efficiency η is obtainedmc＝1。
According to a second priority of energy consumption, Pcontrol、Pcool、PfogThe priority of energy consumption is highest and the required power is not limited, i.e. the power consumption of the controller, the power consumption of the defrost/defog unit and the power consumption of the battery cooling are not limited.
At this time, the motor is in an energy feedback state, the power recovered by the energy is not enough to supply comfortable accessories, and the influence on the power battery is avoided, so that the power is not limited, and the energy recovery power is calculated to be P 'through the energy recovery torque'mc。
The limit value of the consumed power of the air conditioner is the minimum value of the power which can be output by the power battery, the energy recovery power and the power consumed by the controller and the power required by the air conditioner. The specific calculation formula is as follows:
PAC＝min{PACReq,(Pbat+P′mc-(Pcool+Pfog+Pcontrol)}，
when the defrost/defog device is activated, i.e., the defrost/defog switch is active, the power requirement for defrost defogging is maximized to meet the defrost/defog function. Specifically, the power consumption of the defrosting/defogging device is:
Pfog＝max{PAC,Pfog}，
further, the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，(Pbat+P′mc-(Pcool+Pfog+Pcontrol+PAC))}，
Wherein, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesConsumption Power for comfort Accessories, P'AccessoriesRequested Power, P 'for comfort Accessories'mcAnd recovering power for the motor energy.
On the other hand, the control module 120 is configured to, when energy required by the vehicle system is provided only by the motor, that is, energy recovered by the motor can be supplied to the vehicle for energy consumption alone, sequentially arrange energy consumption of the vehicle energy consumption components into a third energy consumption priority order according to the priority from high to low, and perform energy distribution on the vehicle energy consumption components according to the third energy consumption priority order, where the third energy consumption priority order is: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the air conditioner consumes energy, the comfortable accessory consumes energy and the power battery charges and consumes energy.
Specifically, for example, when the vehicle decelerates or runs downhill, the motor operates in a regenerative braking state, the energy consumption components of the whole vehicle in this operating mode include an air conditioner, various controllers, comfort accessories, and the like, and the energy supply component is the motor. And in the energy distribution process, distributing the priority of the energy consumption components, namely a third energy consumption priority sequence.
In an embodiment of the present invention, the control code 120 performs energy distribution on the entire vehicle energy consuming components according to the third energy consumption priority order, including: firstly, a power battery, a comfortable accessory, a controller and an air conditioner belong to energy consumption components, and the consumed power P of the controllercontrolAnd power consumption P of the defrosting/demisting devicefogThe power is not limited. The maximum charging power of the power battery is calculated by the power battery according to the battery electric quantity state at the moment:
P′bat＝(Ibat*Vbat)/η′bat，
wherein, (η'bat＝P′bat/(P′mc-PAC_feedback-Pcontrol–PAccessories-PAC))，
When the defrost/defog device is activated, i.e., the defrost/defog switch is active, the power requirement for defrost defogging is maximized to meet the defrost/defog function. Specifically, the power consumption of the defrosting/defogging device is:
Pfog＝max{PAC_feedback,Pfog}，
further, according to the power required by all the energy consumption components of the whole vehicle, the maximum energy recovery power of the motor is calculated as follows:
P′mc＝P′bat+PAC+Paccessories+Pcontrol，
Wherein, IbatCharging the power battery with the maximum allowable current; vbatη 'is the battery voltage'bat: for charging energy conversion efficiency, PAC_feedbackActual consumed power, P 'for air conditioner feedback'mcIs the most important of the motorHigh energy recovery Power, P'batIs the maximum charging power, P, of the power batteryfogFor power consumption of defrosting/demisting arrangements, PACFor air-conditioning power consumption limit, PAccessoriesConsumption of power for comfort accessories, PcontrolConsuming power for the controller.
On the other hand, the control module 120 is configured to control the maximum charging power of the charger to be a first preset power and control the power consumption of the air conditioner to be a second preset power when the vehicle is in the slow charging mode, and the power consumption for cooling the power battery is not limited. Wherein, in one embodiment of the present invention, for example, the first preset power is 3.3 kw. In other words, when the vehicle is slowly charged, the maximum power of the charger is set to be 3.3kw, and considering that the output power of the charger is limited and the battery can be charged when the air conditioner is turned on, therefore, the power requirement of the air conditioner is limited, the limited degree is set as a standard quantity (second preset power), and the energy used by the power battery for cooling and consuming power is not limited.
On the other hand, the control module 120 is configured to control the maximum charging power of the charger to be a third preset power when the vehicle is in the fast charging mode, and power consumption of all energy consumption components of the entire vehicle is not limited. Wherein, in one embodiment of the present invention, for example, the first preset power is 3.3 kw. In other words, when the vehicle is charged quickly, the maximum charging power of the charger is set to 30kw, and since the charging power is relatively high at this time, all energy consumption is not limited at this time, that is, the power consumption of all energy consumption components of the whole vehicle is not limited.
In summary, according to the energy management system of the pure electric vehicle provided by the embodiment of the invention, the energy supply mode of the vehicle at present is analyzed, and corresponding control strategies and control flows are formulated according to different energy supply modes to distribute energy to energy consumption components of the whole vehicle, so that overcurrent faults of a motor and a power battery can be prevented, the safety of the whole vehicle is improved, energy can be saved, the driving range of the vehicle is improved, the comfort performance of the whole vehicle is considered, and the comfort of the whole vehicle is improved.
It should be noted that a specific implementation manner of the energy management system of the pure electric vehicle in the embodiment of the present invention is similar to a specific implementation manner of the energy management method of the pure electric vehicle in the embodiment of the present invention, and please refer to the description of the method part specifically, and details are not described here again in order to reduce redundancy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The energy management method of the pure electric vehicle is characterized by comprising the following steps:
judging an energy supply mode of a whole vehicle system;
if the energy required by the whole vehicle system is only provided by a power battery, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a first energy consumption priority sequence from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the first energy consumption priority sequence, wherein the first energy consumption priority sequence is as follows: the controller power consumption, power battery cooling power consumption, defrosting/defogging device power consumption, motor drive power consumption, air conditioner power consumption and comfortable annex power consumption, wherein, according to first energy consumption priority order is to whole car power consumption components and parts carry out energy distribution, include:
the power consumption of the controller, the power consumption of the defrosting/defogging device, and the battery cooling power consumption are not limited;
the limit value of the motor driving power is as follows:
Pmc＝min{(Pbat-Pcontrol-Pfog),(PL/ηmc)}，
the limit value of the consumed power of the air conditioner is as follows:
PAC＝min{PACReq,Pbat-(Pfog+Pcontrol+Pcool)}，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC,Pfog}，
the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，Pbat-(Pmc+Pcontrol+Pcool)-PAC}，
Wherein, PLPower required to be output for the motor, ηmcFor efficiency of energy conversion, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesA requested power for the comfort accessory;
if the energy required by the whole vehicle system is provided by the power battery and the motor together, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a second energy consumption priority sequence from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the second energy consumption priority sequence, wherein the second energy consumption priority sequence is as follows: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the air conditioner consumes energy and the comfortable accessory consumes energy;
if the energy required by the whole vehicle system is only provided by the motor, the energy consumption of the whole vehicle energy consumption components is sequentially arranged into a third energy consumption priority order from high to low according to the priority, and the energy distribution is carried out on the whole vehicle energy consumption components according to the third energy consumption priority order, wherein the third energy consumption priority order is as follows: the controller consumes energy, the power battery cools and consumes energy, the defrosting/defogging device consumes energy, the air conditioner consumes energy, the comfortable accessory consumes energy and the power battery charges and consumes energy;
if the vehicle is in a slow charging mode, controlling the maximum charging power of a charger to be first preset power, controlling the consumed power of an air conditioner to be second preset power, and limiting the cooling consumed power of the power battery; and
and if the vehicle is in a quick charging mode, controlling the maximum charging power of the charger to be third preset power, and limiting the consumed power of all energy consumption components of the whole vehicle.
2. The energy management method for the pure electric vehicle according to claim 1, wherein the energy distribution of the entire vehicle energy consumption components according to the second energy consumption priority order comprises:
the power consumption of the controller, the power consumption of the defrosting/defogging device and the battery cooling power consumption are not limited;
the limit value of the consumed power of the air conditioner is as follows:
PAC＝min{PACReq,(Pbat+P′mc-(Pcool+Pfog+Pcontrol)}，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC,Pfog}，
the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，(Pbat+P′mc-(Pcool+Pfog+Pcontrol+PAC))}，
Wherein, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesIs requested Power, P 'of the comfort Accessories'mcAnd recovering power for the motor energy.
3. The energy management method for the pure electric vehicle according to claim 1, wherein the energy distribution of the entire vehicle energy consumption components according to the third energy consumption priority order comprises:
the power consumption of the controller and the power consumption of the defrosting/defogging device are not limited;
the maximum charging power of the power battery is as follows:
P′bat＝(Ibat*Vbat)/η′bat，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC_feedback,Pfog}，
the maximum energy recovery power of the motor is as follows:
P′mc＝P′bat+PAC+Paccessories+Pcontrol，
Wherein, IbatCharging the power battery with the maximum allowable current; vbatη 'is the battery voltage'bat: for charging energy conversion efficiency, PAC_feedbackActual consumed power, P 'for air conditioner feedback'mcIs the maximum energy recovery power, P 'of the electric machine'batIs the maximum charging power, P, of the power batteryfogFor power consumption of defrosting/demisting arrangements, PACFor air-conditioning power consumption limit, PAccessoriesIs the power consumption of the comfort accessory, PcontrolConsuming power for the controller.
4. The energy management method for the pure electric vehicle according to claim 1, wherein the first preset power is 3.3 kilowatts, and the third preset power is 30 kilowatts.
5. A pure electric vehicle energy management system, comprising:
the judging module is used for judging the functional mode of the whole vehicle system;
the control module is used for sequentially arranging the energy consumption of the whole vehicle energy consumption components into a first energy consumption priority sequence from high to low according to the priority when the energy required by the whole vehicle system is only provided by a power battery, and performing energy distribution on the whole vehicle energy consumption components according to the first energy consumption priority sequence, wherein the first energy consumption priority sequence is as follows: controller power consumption, power battery cooling power consumption, defrosting/defogging device power consumption, motor drive power consumption, air conditioner power consumption and comfortable annex power consumption and be in the required energy of whole car system by when power battery and motor provided jointly, arrange the energy consumption of whole car power consumption components and parts into second energy consumption priority order by high to low according to the priority, and according to second energy consumption priority order is right whole car power consumption components and parts carry out energy distribution, wherein, second energy consumption priority order is: the controller consumes energy, power battery cooling consumes energy, defrosting/defogging device consumes energy, air conditioner consumes energy and comfortable annex power consumption and be in the energy that whole car system needs only by when the motor provided, arrange the energy consumption of whole car power consumption components and parts in proper order into third energy consumption priority order by high to low according to the priority, and according to the third energy consumption priority order is right whole car power consumption components and parts carry out energy distribution, wherein, the third energy consumption priority order is: controller power consumption, power battery cooling power consumption, defrosting/defogging device power consumption, air conditioner power consumption, comfortable annex power consumption and power battery power consumption of charging, and when the vehicle was in the mode of filling slowly, the maximum charging power of control machine of charging was first default power, and the power consumption of control air conditioner was the second default power, and power battery cooling power consumption is unrestricted, and when the vehicle was in the mode of filling soon, control the maximum charging power of machine of charging was the third default power, and all whole car power consumption components and parts's power consumption all unrestricted, wherein, according to first energy consumption priority order is right whole car power consumption components and parts carry out energy distribution, include:
the power consumption of the controller, the power consumption of the defrosting/defogging device, and the battery cooling power consumption are not limited;
the limit value of the motor driving power is as follows:
Pmc＝min{(Pbat-Pcontrol-Pfog),(PL/ηmc)}，
the limit value of the consumed power of the air conditioner is as follows:
PAC＝min{PACReq,Pbat-(Pfog+Pcontrol+Pcool)}，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC,Pfog}，
the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，Pbat-(Pmc+Pcontrol+Pcool)-PAC}，
Wherein, PLPower required to be output for the motor, ηmcFor efficiency of energy conversion, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesA requested power for the comfort accessory.
6. The energy management system of the pure electric vehicle according to claim 5, wherein the control module performs energy distribution on the entire vehicle energy consumption components according to the second energy consumption priority order, and the energy distribution system comprises:
the power consumption of the controller, the power consumption of the defrosting/defogging device and the battery cooling power consumption are not limited;
the limit value of the consumed power of the air conditioner is as follows:
PAC＝min{PACReq,(Pbat+P′mc-(Pcool+Pfog+Pcontrol)}，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC,Pfog}，
the power consumed by the comfort accessory is:
Paccessories＝min{P′Accessories，(Pbat+P′mc-(Pcool+Pfog+Pcontrol+PAC))}，
Wherein, PbatFor power cell output, PmcIs the motor drive power limit, PACReqPower demand for air-conditioning, PACFor air-conditioning power consumption limit, PcontrolConsuming power for the controller, PfogFor power consumption of defrosting/demisting arrangements, PcoolPower required for cooling the power cell, PAccessoriesIs the consumed power of the comfort accessory, P'AccessoriesIs requested Power, P 'of the comfort Accessories'mcAnd recovering power for the motor energy.
7. The energy management system of the pure electric vehicle according to claim 5, wherein the control module performs energy distribution on the entire vehicle energy consumption components according to the third energy consumption priority order, and the energy distribution system comprises:
the power consumption of the controller and the power consumption of the defrosting/defogging device are not limited;
the maximum charging power of the power battery is as follows:
P′bat＝(Ibat*Vbat)/η′bat，
when the defrosting/defogging device is started, the power consumption of the defrosting/defogging device is as follows:
Pfog＝max{PAC_feedback,Pfog}，
the maximum energy recovery power of the motor is as follows:
P′mc＝P′bat+PAC+Paccessories+Pcontrol，
Wherein, IbatCharging the power battery with the maximum allowable current; vbatIs the voltage of the battery；η′bat: for charging energy conversion efficiency, PAC_feedbackActual consumed power, P 'for air conditioner feedback'mcIs the maximum energy recovery power, P 'of the electric machine'batIs the maximum charging power, P, of the power batteryfogFor power consumption of defrosting/demisting arrangements, PACFor air-conditioning power consumption limit, PAccessoriesIs the power consumption of the comfort accessory, PcontrolConsuming power for the controller.
8. The energy management system of the pure electric vehicle of claim 5, wherein the first predetermined power is 3.3 kilowatts and the third predetermined power is 30 kilowatts.
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| CN109017375B (en) * | 2018-07-27 | 2021-04-27 | 重庆长安新能源汽车科技有限公司 | Whole vehicle energy distribution method and system and electric vehicle |
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| CN111497655B (en) * | 2020-04-01 | 2022-11-11 | 浙江吉利控股集团有限公司 | Power determination method and device under charging working condition of electric automobile and automobile |
| CN111688544B (en) * | 2020-05-29 | 2022-04-12 | 爱驰汽车有限公司 | Thermal management control method for power battery |
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| CN112277618B (en) * | 2020-10-30 | 2022-02-18 | 东风商用车有限公司 | Method and device for controlling electric balance of 48V electric system of automobile |
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