CN109969038B - Energy management method, system, equipment and storage medium for vehicle-mounted dual-source battery pack - Google Patents

Energy management method, system, equipment and storage medium for vehicle-mounted dual-source battery pack Download PDF

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CN109969038B
CN109969038B CN201910302393.4A CN201910302393A CN109969038B CN 109969038 B CN109969038 B CN 109969038B CN 201910302393 A CN201910302393 A CN 201910302393A CN 109969038 B CN109969038 B CN 109969038B
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battery pack
vehicle
electric quantity
high voltage
source
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CN109969038A (en
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李小庆
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Aiways Automobile Co Ltd
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Aiways Automobile Co Ltd
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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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
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  • Electric Propulsion And Braking For Vehicles (AREA)
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Abstract

The invention provides an energy management method, a system, equipment and a storage medium for a vehicle-mounted dual-source battery pack, wherein the energy management method for the vehicle-mounted dual-source battery pack comprises the following steps: and selecting one of the first battery pack and the second battery pack according to the battery states to electrify the motor controller and drive the motor to rotate, wherein the battery states comprise a fault state, a high voltage state and an electric quantity of which the residual electric quantity exceeds a preset electric quantity threshold value. The invention can expand the application range of the double-source battery pack, improve the convenience of the double-source battery pack, improve the endurance mileage on the premise of ensuring the dynamic property, the economical efficiency and the driving property, and greatly reduce the cost of the battery pack and the cost of the whole vehicle.

Description

Energy management method, system, equipment and storage medium for vehicle-mounted dual-source battery pack
Technical Field
The invention relates to the field of new energy automobile battery management, in particular to an energy management method, system, equipment and storage medium of a vehicle-mounted dual-source battery pack.
Background
At present, electric vehicles generally adopt two modes to meet the requirements of a high-power battery pack:
(1) and (4) increasing the capacity of a single battery cell, such as a 96Ah ternary lithium ion battery released by samsung. Although the capacity of monomer electricity core has been increased, the increase of its capacity will bring the increase of space occupancy certainly, so also can restrict the utilization ratio in whole car battery space greatly to, when designing the battery package, the free combination of being not convenient for of monomer electricity core of large capacity, this makes the expansibility variation of battery package, can't adapt to the different mileage demands of continuing to go.
(2) A large number of small capacity cell bodies are used: for example, the battery pack scheme of tesla is based on the small-capacity cells 18650, and tens of thousands of the small-capacity cells are combined to meet the requirement of the large-capacity battery pack. Although the random combination of tens of thousands of single battery cells solves the problems of large capacity and convenient combination, the adoption of a large number of single battery cells inevitably causes the reduction of the overall safety and reliability of the battery pack.
In addition, no matter which of the above two schemes is adopted, in order to ensure the service life of the whole vehicle, the requirement on the reliability of the single battery cell is extremely high, and thus the cost of the whole battery pack of the electric vehicle is difficult to control. In the whole cost of the electric vehicle EV, the cost of the power battery pack system accounts for 40-70%. Calculated according to the current battery cell price, the cost of the power battery pack mostly exceeds 50% of the whole cost of the electric vehicle EV. Compared with the traditional fuel-based automobile, the EV has no cost advantage, thereby greatly restricting the market acceptance of the EV.
Therefore, the invention provides an energy management method, a system, equipment and a storage medium for a vehicle-mounted dual-source battery pack.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide an energy management method, a system, equipment and a storage medium for a vehicle-mounted double-source battery pack, which overcome the difficulties in the prior art, can improve the endurance mileage on the premise of ensuring the dynamic property, the economical efficiency and the drivability, and greatly reduce the cost of the battery pack and the cost of the whole vehicle.
The embodiment of the invention also provides an energy management method of the vehicle-mounted double-source battery pack, which comprises the following steps:
s200, selecting one of the first battery pack and the second battery pack according to the battery states of the first battery pack and the second battery pack to electrify the motor controller to drive the motor to rotate, wherein the battery states comprise a fault state, a high voltage state and an electric quantity of which the residual electric quantity exceeds a preset electric quantity threshold value.
Preferably, the step S200 includes the steps of:
s201, carrying out low-voltage electrification;
s202, judging whether a first condition set is met at the same time, wherein the first condition set comprises that the first battery pack is free of faults and the residual electric quantity of the first battery pack is larger than a preset electric quantity threshold value, if yes, executing a step S203, and if not, executing a step 204;
s203, electrifying the first battery pack, and executing the step S222;
s204, judging whether a second condition combination is met or not, wherein the second condition combination comprises one state of configuring a second battery pack by a vehicle, having no fault in the second battery pack, having the residual capacity of the second battery pack larger than a preset capacity threshold value and not meeting the first condition set, if yes, executing a step S205, and if not, executing a step 206;
s205, electrifying the second battery pack, and executing the step S222;
s206, reporting the fault of the whole vehicle, and executing the step S222 when the high voltage is not applied;
and S222, ending.
Preferably, after step S203, step S222 further includes:
s207, judging whether the first battery pack is successfully electrified, if so, executing a step S208, and if not, executing a step S200;
s200, lowering the high voltage of the first battery pack, and returning to the step S204;
s208, independently powering on the motor controller by the first battery pack;
s209, judging whether a third condition combination is simultaneously met, wherein the third condition combination comprises a fourth condition, a second battery pack is configured for the vehicle, the second battery pack is free of fault, the residual electric quantity of the second battery pack is greater than a preset electric quantity threshold value, and whether the rotating speed of the motor is less than or equal to the preset rotating speed threshold value; the fourth condition is that the remaining power of the first battery pack is less than a preset power threshold, the first battery pack has a fault or the selector switch enables one of the states, if yes, step S210 is executed, and if not, step S209 is returned;
s210, after the first battery pack is subjected to high voltage, the second battery pack is subjected to high voltage;
and S211, independently powering on the motor controller through the second battery pack.
Preferably, after the step S208, before the step S222, the method further includes the following steps:
s212, judging whether the current gear of the key is located in a full-vehicle electrified gear, if so, executing a step S213, and if not, returning to the step 212;
s213, the first battery pack is charged with high voltage, and step S222 is executed.
Preferably, after step S205, step S222 further includes:
s214, judging whether the high voltage on the second battery succeeds or not, if so, executing a step S216, and if not, executing a step S215;
s215, putting the second battery pack under high voltage, and executing the step S222;
s216, independently powering on the motor controller by the second battery pack;
s217, judging whether a fifth condition combination is met simultaneously, wherein the fifth condition combination comprises a sixth condition, no fault exists in the first battery pack, the residual electric quantity of the first battery pack is greater than a preset electric quantity threshold value, and whether the rotating speed of the motor is less than or equal to the preset rotating speed threshold value; the sixth condition is that the remaining power of the second battery pack is less than a preset power threshold, the second battery pack has a fault or the selector switch enables one of the states, if yes, step S218 is executed, and if not, step S217 is returned;
s218, after the second battery pack is subjected to high voltage, the first battery pack is subjected to high voltage;
and S219, independently powering on the motor controller through the first battery pack.
Preferably, after the step S216, before the step S222, the method further includes the following steps:
s220, judging whether the current gear of the key is located in a full-vehicle electrified gear, if so, executing a step S221, and if not, returning to the step 220;
s221, the second battery pack is charged with high voltage, and step S222 is executed.
Preferably, the first battery pack is a built-in rechargeable battery pack arranged in the vehicle, and the second battery pack is a detachable battery replacement pack.
Preferably, step S100, setting a navigation path, is further included before step S200;
the step S200 is followed by the steps of:
s300, judging whether the electric quantity of the first battery pack and the second battery pack can reach the destination of the navigation path or not, if so, returning to the step S300, and if not, returning to the step 400;
s400, searching nearby charging stations, the current position and the destination along a navigation path to serve as network nodes, establishing paths among the network nodes, and forming a network node map according to the network nodes and the paths;
s500, traversing all network nodes by taking the network node at the current position as a starting point, and acquiring the passing time of paths between the network nodes, the charging time for fully charging the first battery after reaching each node, and the battery replacement time for replacing the second battery; and
s600, screening the path combination of the network node map which is shortest in time when the network node map reaches the destination from the current position, and serving as a recommended driving path to push to the user.
Preferably, in S500, a network node closest to the destination is searched as a next node in a range in which a farthest distance that the electric quantities of the current first battery pack and the current second battery pack can reach is a radius from the previous node as a center of the circle.
Preferably, in S500, the time required for reaching each node is the sum of the passage time, the charging time, and the battery replacement time.
The embodiment of the invention provides an energy management system of a vehicle-mounted dual-source battery pack, which is used for realizing the energy management method of the vehicle-mounted dual-source battery pack, and the energy management system of the vehicle-mounted dual-source battery pack comprises the following steps:
and the battery pack control module is used for selecting one of the battery states of the first battery pack and the second battery pack to electrify the motor controller to drive the motor to rotate, wherein the battery state comprises a fault state, a high-voltage state and an electric quantity of which the residual electric quantity exceeds a preset electric quantity threshold value.
Preferably, the first battery pack is a built-in rechargeable battery pack arranged in the vehicle, and the second battery pack is a detachable battery replacement pack.
Preferably, the method further comprises the following steps:
the navigation path module is used for setting a navigation path;
the route judging module is used for judging whether the electric quantity of the first battery pack and the second battery pack can reach the destination of the navigation route or not, if so, the network node module is executed, and if not, the network node module returns to the route judging module;
the network node module is used for searching nearby charging stations, the current position and the destination along a navigation path to serve as network nodes, establishing paths among the network nodes and forming a network node map according to the network nodes and the paths;
the path prediction module traverses all network nodes by taking the network node at the current position as a starting point, acquires the passing time of paths between the network nodes, the charging time for fully charging the first battery after reaching each node, the battery replacement time for replacing the second battery, and
and the path screening module is used for screening the path combination of the shortest network node map when the network node map reaches the destination from the current position as a recommended driving path and pushing the recommended driving path to the user.
Preferably, in the path prediction module, a network node closest to the destination is searched as a next node within a range in which a farthest distance that electric quantities of the current first battery pack and the current second battery pack can reach is a radius from a previous node as a center of a circle.
An embodiment of the present invention further provides an energy management device for a vehicle-mounted dual-source battery pack, including:
a processor;
a memory having stored therein executable instructions of the processor;
wherein the processor is configured to execute the steps of the above-mentioned energy management method of the on-vehicle dual-source battery pack via execution of the executable instructions.
Embodiments of the present invention also provide a computer-readable storage medium for storing a program that, when executed, implements the steps of the above-described method for energy management of a vehicle-mounted dual-source battery pack.
The energy management method, the system, the equipment and the storage medium of the vehicle-mounted double-source battery pack can expand the application range of the double-source battery pack, improve the convenience of the double-source battery pack, improve the endurance mileage on the premise of ensuring the dynamic property, the economical efficiency and the driving property, and greatly reduce the cost of the battery pack and the cost of the whole vehicle.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a power supply module of an electric vehicle using an on-board dual-source battery pack in an embodiment of the invention;
fig. 2 is a flowchart of an energy management method of the on-vehicle dual-source battery pack of the present invention;
fig. 3 is a flowchart of step S200 in the energy management method of the on-vehicle dual-source battery pack of the present invention;
fig. 4 to 7 are process diagrams for implementing the energy management method of the vehicle-mounted dual-source battery pack according to the present invention;
FIG. 8 is a schematic circuit diagram of the energy management system of the on-board dual-source battery pack of the present invention;
fig. 9 is a schematic structural view of an energy management device of the on-vehicle dual-source battery pack of the invention; and
fig. 10 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 1 is a schematic diagram of a power supply module of an electric vehicle using an on-vehicle dual-source battery pack according to an embodiment of the present invention. Fig. 2 is a flowchart of an energy management method of the vehicle-mounted dual-source battery pack according to the present invention. Fig. 3 is a flowchart of step S200 in the energy management method for the vehicle-mounted dual-source battery pack according to the present invention. As shown in fig. 1 to 2, the energy management method of the vehicle-mounted dual-source battery pack of the present invention includes:
and S100, setting a navigation path.
S200, selecting one of the first battery pack 1 and the second battery pack 2 according to the battery states to electrify the motor controller 4 and drive the motor 3 to rotate, wherein the battery states include a fault state, a high voltage state and an electric quantity of which the residual electric quantity exceeds a preset electric quantity threshold value. The first battery pack 1 is a built-in rechargeable battery pack arranged in the vehicle, and the second battery pack 2 is a detachable battery replacement pack.
S300, judging whether the electric quantity of the first battery pack 1 and the second battery pack 2 can reach the destination of the navigation path or not, if yes, returning to the step S300, and if not, returning to the step 400.
S400, searching nearby charging stations, the current position and the destination along the navigation path to serve as network nodes, establishing paths among the network nodes, and forming a network node map according to the network nodes and the paths.
S500, traversing all network nodes by taking the network node at the current position as a starting point, and acquiring the passing time of paths between the network nodes, the charging time for fully charging the first battery after reaching each node, and the battery replacement time for replacing the second battery. And
s600, screening the path combination of the network node map which is shortest in time when the network node map reaches the destination from the current position, and pushing the path combination as a recommended driving path to the user.
In a preferred embodiment, in S500, a network node closest to the destination is searched as a next node within a range in which the farthest distance that the current electric quantities of the first battery pack 1 and the second battery pack 2 can reach is a radius from the previous node.
In a preferred embodiment, in S500, the time required to reach each node is the sum of the pass time, the charge time, and the swap time.
The energy management method, the system, the equipment and the storage medium of the vehicle-mounted double-source battery pack can expand the application range of the double-source battery pack, improve the convenience of the double-source battery pack, improve the endurance mileage on the premise of ensuring the dynamic property, the economical efficiency and the driving property, and greatly reduce the cost of the battery pack and the cost of the whole vehicle.
Referring to fig. 1 to 2, based on the above dual-source battery pack scheme, the present invention also designs a software control flow of the scheme, and the part of control is generally performed by a Vehicle Control Unit (VCU).
(1) And (3) completing low-voltage electrification, wherein the A packet has no fault and the SOC (state of charge) & A packet is TBD (state of charge) & A packet, at the moment, if the high-voltage condition is met, the VCU controls the high voltage on the A packet, if the high voltage on the A packet succeeds, the power supply mode of the A packet is entered, and if the high voltage on the A packet does not succeed, the high voltage on the A packet is entered, the step (2) is entered.
(2) The VCU checks whether the vehicle is configured with B package & & B package no fault & & B package SOC > & & & (A package SOC < TBD | | | A package has a fault), if the above conditions are met, the high voltage on the B package is controlled, if the high voltage on the B package is successful, the power supply mode of the B package is entered, and if the high voltage on the B package is not successful, the high voltage under the B package is not configured.
(3) Currently in the power supply mode of the packet A, if KL15 is OFF, the VCU controls the high voltage of the packet A; if (the A packet SOC < TBD | | A packet has a fault | | | switch enabling) & & B packet has & & B packet SOC > & & B packet no fault & & motor speed < & TBD rpm, the VCU controls the high voltage of the A packet, and after the high voltage of the A packet is finished, the VCU controls the high voltage of the B packet and enters a B packet power supply mode.
(4) Currently in a B packet power supply mode, if KL15 is OFF, the VCU controls the high voltage of the B packet; if (B package SOC < TBD | | B package has fault | | switch enable) & & A package exists & & A package SOC > & & A package is not fault & & motor speed < & TBD rpm, then the VCU controls the high voltage under the B package, and after the high voltage under the B package is finished, the VCU controls the high voltage on the A package and enters an A package power supply mode. In the steps (1) to (4), the pack a is used as a first battery pack, the pack B is used as a second battery pack, the SOC is the remaining power, and the TBD is a preset standard value.
In this embodiment, the present invention is applied to an electric vehicle, wherein the first battery pack 1 is a main battery pack, has a large battery capacity, is a main energy source of a vehicle, is self-provided when leaving a factory, is a necessary pack, and is generally installed on a vehicle chassis. The second battery pack 2 is an auxiliary pack, has small battery capacity, generally has the capacity of about 20kwh, is an optional pack, can be installed before leaving the factory and also can be installed automatically after leaving the factory, is mainly used for increasing the endurance mileage for a long distance, is generally installed in a vehicle trunk, is convenient to disassemble, can be disassembled when not needed, and is flexible and convenient to use. The double-source battery pack scheme provided by the invention only has two power supply modes of the single first battery pack and the single second battery pack, and the two power supply modes can be switched automatically or manually through a switch, and can be carried out when a vehicle runs no matter whether the two power supply modes are switched automatically or manually. In the embodiment, the motor mainly provides power for the running of the vehicle. The Motor Controller (MCU) mainly converts the direct current of the battery pack into alternating current required by the motor, controls the motor drive, diagnoses the motor fault, and reports the motor fault and the state to a VCU (vehicle control system). It should be noted that the drawings provided in the present application are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of each component in actual implementation may be changed freely, and the layout of the components may be more complicated.
As shown in fig. 3, in the present embodiment, the step S200 includes the following steps:
and S201, carrying out low-voltage electrification.
S202, determining whether a first condition set is simultaneously satisfied, where the first condition set includes that the first battery pack 1 has no fault and the remaining power of the first battery pack 1 is greater than a preset power threshold, if yes, performing step S203, and if not, performing step 204.
S203, the first battery pack 1 is powered on, and step S207 is executed.
And S204, judging whether a second condition combination is simultaneously met, wherein the second condition combination comprises that the vehicle is configured with one of the states that the second battery pack 2 is not in fault, the residual capacity of the second battery pack 2 is greater than a preset capacity threshold value and the first condition set is not met, if yes, executing the step S205, and if not, executing the step 206.
S205, the second battery pack 2 is powered on, and step S214 is executed.
And S206, reporting the fault of the whole vehicle, and executing the step S222 when the high voltage is not applied.
S207, determining whether the first battery pack 1 is successfully powered on, if so, performing step S208, and if not, performing step S200.
S200, the first battery pack 1 is pressed down to high voltage, and the process returns to the step S204.
S208, the first battery pack 1 alone powers on the motor controller 4, and step S212 is executed.
S209, whether a third condition combination is simultaneously met is judged, wherein the third condition combination comprises a fourth condition, the second battery pack 2 is configured on the vehicle, the second battery pack 2 has no fault, the residual capacity of the second battery pack 2 is greater than a preset capacity threshold, and whether the rotating speed of the motor 3 is less than or equal to the preset rotating speed threshold. The fourth condition is that the remaining power of the first battery pack 1 is less than the preset power threshold, the first battery pack 1 has a fault, or the switch enables one of the states, if yes, step S210 is executed, and if no, step S209 is returned.
And S210, after the first battery pack 1 is subjected to high voltage reduction, the second battery pack 2 is subjected to high voltage reduction.
S211, the motor controller 4 is separately powered up through the second battery pack 2.
S212, judging whether the current gear of the key is located in an all-vehicle electrified gear (ACC gear), if so, executing a step S213, otherwise, returning to the step 212. (in the automobile, ACC means that before the automobile is not started, if a key is used for an ACC gear, if the key is used for dialing the position, some devices with small power consumption, such as a radio, a cigarette lighter and the like, are electrified, when the automobile is ignited, a strong current is needed, the ACC stops supplying power, and the power supply is started after the ignition of the automobile is finished.)
S213, the first battery pack 1 is charged with high voltage, and step S222 is executed.
S214, determining whether the high voltage on the second battery is successful, if yes, performing step S216, and if no, performing step S215.
S215, the second battery pack 2 is charged with high voltage, and step S222 is executed.
S216, the second battery pack 2 powers on the motor controller 4 alone, and step S220 is executed.
And S217, judging whether a fifth condition combination is simultaneously met, wherein the fifth condition combination comprises a sixth condition, no fault exists in the first battery pack 1, the residual electric quantity of the first battery pack 1 is greater than a preset electric quantity threshold value, and whether the rotating speed of the motor 3 is less than or equal to the preset rotating speed threshold value. The sixth condition is that the remaining power of the second battery pack 2 is less than the preset power threshold, the second battery pack 2 has a fault, or the switch enables one of the states, if yes, step S218 is executed, and if no, step S217 is returned.
And S218, after the second battery pack 2 is subjected to high voltage reduction, the first battery pack 1 is subjected to high voltage increase.
S219, the process is switched to power up the motor controller 4 alone through the first battery pack 1.
And S220, judging whether the current gear of the key is positioned in a full-vehicle electrified gear, if so, executing a step S221, and if not, returning to the step 220.
S221, the second battery pack 2 is charged to a high voltage, and step S222 is executed.
And S222, ending.
The vehicle using the invention can be freely switched between two power supply modes of the first battery pack and the second battery pack, can be automatically switched, and can also be manually switched through the selector switch. Meanwhile, the two switching modes can be carried out when the vehicle runs. Under each mode, the working state of the vehicle is stable, and the dynamic property, the economical efficiency, the driveability and the like meet the requirements of company specifications. The second battery pack is an optional pack, can be installed before leaving a factory or automatically installed after leaving the factory, is mainly used for increasing the endurance mileage for a long distance, is generally installed in a vehicle trunk, is convenient to disassemble, can be disassembled when not needed, is flexible and convenient to use, can be rented when needed, and greatly reduces the vehicle cost and the selling price. Meanwhile, the first battery pack and the second battery pack both support energy recovery, and the energy efficiency can be improved by more than 20%.
Fig. 4 to 7 are process diagrams illustrating an energy management method of a vehicle-mounted dual-source battery pack according to the present invention. Referring to fig. 4 to 7, first, a navigation path is set by the in-vehicle navigation system to set a start point 10 and a destination 30 of this navigation of the vehicle. And then, selecting one of the first battery pack 1 and the second battery pack 2 according to the battery states to electrify the motor controller 4, so as to drive the motor 3 to rotate, wherein the battery states comprise a fault state, a high voltage state and an electric quantity of which the residual electric quantity exceeds a preset electric quantity threshold value. The first battery pack 1 is a built-in rechargeable battery pack arranged in the vehicle, and the second battery pack 2 is a detachable battery replacement pack. The destination 30 of the current navigation is far away from the starting point 10, and the electric quantity of the first battery pack 1 and the second battery pack 2 cannot reach the destination of the navigation route at present, if so, the step S300 is returned, and if not, the step 400 is returned.
As shown in fig. 4, the navigation path is searched for nearby charging stations, and a charging station 21, a charging station 22, a charging station 23, a charging station 24, a charging station 25, a charging station 26, a charging station 27, a charging station 28, a charging station 29, and a start point 10 and a destination 30 of the current location are found as network nodes, a path between the network nodes is established, and a network node map is formed according to the network nodes and the path.
In a preferred embodiment, all network nodes are traversed by taking the network node at the current position as a starting point, the passing time of paths between the network nodes is obtained, and the charging time for fully charging the first battery and the battery replacement time for replacing the second battery after the first battery reaches each node are obtained.
In a preferred embodiment, from the previous node as the center of a circle, the network node closest to the destination is searched as the next node within a range of a radius which is the farthest distance that the electric quantity of the first battery pack 1 and the second battery pack 2 can reach. The time required for reaching each node is the sum of the passing time, the charging time and the battery replacement time.
In the present embodiment, a variety of different navigation paths are generated through the path planning of the nodes, and the specific process of the present embodiment is shown below only by showing the comparison of three paths S1, S2, and S3.
As shown in fig. 5, the route S1 includes the process of passing through the charging station 21, the charging station 24, the charging station 25, and the destination 30 in this order from the starting point 10, wherein the time from the starting point 10 to the charging station 21 includes the travel time T1 between the starting point 10 and the charging station 21, and the charging time T2 expected to fully charge the first battery and the battery replacement time T3 expected to replace the second battery in the recharging station 21 after reaching the charging station 21. The charging time T2 refers to the expected time required to fully charge the first battery from the current charge, and the swapping time T3 refers to the time required to replace a fully charged second battery. The time from the charging station 21 to the charging station 24 includes a travel time T4 between the charging station 21 and the charging station 24, and a charging time T5 and a charging time T6 for charging the first battery and charging the second battery, which are expected in the recharging station 24 after the charging station 24 arrives. The time from the charging station 24 to the charging station 25 includes a travel time T7 between the charging station 24 and the charging station 25, and a charging time T8 expected to fully charge the first battery and a charging time T9 expected to charge the second battery in the charging station 25 after the charging station 25 arrives. The time from the charging station 25 to the destination 30 includes only the travel time T10 between the charging station 25 and the destination 30. Therefore, the total time to proceed to path S1 is: TS1 ═ T1+ T2+ T3+ T4+
T5+T6+T7+T8+T9+T10。
As shown in fig. 6, the route S2 includes a process of passing through the charging station 22, the charging station 24, the charging station 26, the charging station 28, and the destination 30 in this order from the origin 10, and the total time of the route S2 is TS 2. For the calculation of TS2, reference is made to the foregoing description and no further explanation is given here.
As shown in fig. 7, the route S3 includes a process of passing through the charging station 22, the charging station 24, the charging station 25, the charging station 29, and the destination 30 in this order from the origin 10, and the total time of the route S3 is TS 3. For the calculation of TS3, reference is made to the foregoing description and no further explanation is given here.
And screening the path combination of the network node map which is shortest in time when the current position reaches the destination according to the network node map, and taking the path combination as a recommended driving path to push to the user. Comparing TS1, TS2, and TS3, it is found that the total time TS1 for the travel route S1 is shortest, and the combination of the travel routes in the travel route S1 is pushed to the user as the recommended travel route.
The energy management system of the vehicle-mounted double-source battery pack can expand the application range of the double-source battery pack, improves the convenience of the double-source battery pack, improves the endurance mileage on the premise of ensuring the dynamic property, the economical property and the driving property, and greatly reduces the cost of the battery pack and the cost of the whole vehicle.
Fig. 8 is a circuit schematic diagram of the energy management system of the vehicle-mounted dual-source battery pack of the invention. As shown in fig. 8, the energy management system for a vehicle-mounted dual-source battery pack according to the present invention is configured to implement the energy management method for a vehicle-mounted dual-source battery pack, and the energy management system 5 for a vehicle-mounted dual-source battery pack includes the following modules: the navigation path module 51, the battery pack control module 52, the trip judgment module 53, the network node module 54, the path prediction module 55, and the path screening module 56. The navigation path module 51 is used for setting a navigation path. The battery pack control module 52 is configured to select one of the battery states of the first battery pack and the second battery pack to power on the motor controller to drive the motor to rotate, where the battery state includes a fault state, a high voltage state, and an electric quantity indicating whether a remaining electric quantity exceeds a preset electric quantity threshold. The first battery pack is a built-in rechargeable battery pack arranged in the vehicle, and the second battery pack is a detachable battery replacement pack. The route determining module 53 is configured to determine whether the current electric quantities of the first battery pack and the second battery pack can reach the destination of the navigation path, if yes, execute the network node module 54, and if not, return to the route determining module 53. The network node module 54 is configured to search for a nearby charging station along the navigation path, a current location, and the destination as network nodes, establish a path between the network nodes, and form a network node map according to the network nodes and the path. The path prediction module 55 is configured to traverse all network nodes with the network node at the current position as a starting point, and acquire a transit time of a path between the network nodes, the charging time for fully charging the first battery after reaching each node, and the battery swapping time for swapping the second battery. The path screening module 56 is configured to screen a path combination of the network node map that is the shortest when the current position of the network node map reaches the destination, and push the path combination as a recommended travel path to the user.
In a preferred embodiment, in the path prediction module, a network node closest to the destination is searched as a next node within a range in which a farthest distance that the electric quantities of the current first battery pack and the current second battery pack can reach is a radius from a last node.
The energy management method of the vehicle-mounted double-source battery pack can expand the application range of the double-source battery pack, improves the convenience of the double-source battery pack, improves the endurance mileage on the premise of ensuring the dynamic property, the economical efficiency and the driving property, and greatly reduces the cost of the battery pack and the cost of the whole vehicle.
The embodiment of the invention also provides energy management equipment of the vehicle-mounted double-source battery pack, which comprises a processor. A memory having stored therein executable instructions of the processor. Wherein the processor is configured to perform the steps of the energy management method of the on-board dual-source battery pack via execution of executable instructions.
As shown above, the embodiment can expand the application range of the dual-source battery pack, improve the convenience of the dual-source battery pack, improve the endurance mileage on the premise of ensuring the dynamic property, the economical efficiency and the drivability, and greatly reduce the cost of the battery pack and the cost of the whole vehicle.
As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or program product. Thus, various aspects of the invention may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" platform.
Fig. 9 is a schematic configuration diagram of an energy management device of an on-vehicle dual-source battery pack of the present invention. An electronic device 600 according to this embodiment of the invention is described below with reference to fig. 9. The electronic device 600 shown in fig. 9 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.
As shown in fig. 9, the electronic device 600 is embodied in the form of a general purpose computing device. The components of the electronic device 600 may include, but are not limited to: at least one processing unit 610, at least one memory unit 620, a bus 630 connecting the different platform components (including the memory unit 620 and the processing unit 610), a display unit 640, etc.
Wherein the storage unit stores program code executable by the processing unit 610 to cause the processing unit 610 to perform steps according to various exemplary embodiments of the present invention described in the above-mentioned electronic prescription flow processing method section of the present specification. For example, processing unit 610 may perform the steps as shown in fig. 3.
The storage unit 620 may include readable media in the form of volatile memory units, such as a random access memory unit (RAM)6201 and/or a cache memory unit 6202, and may further include a read-only memory unit (ROM) 6203.
The memory unit 620 may also include a program/utility 6204 having a set (at least one) of program modules 6205, such program modules 6205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Bus 630 may be one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 600 may also communicate with one or more external devices 700 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 600, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 600 to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 650. Also, the electronic device 600 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via the network adapter 660. The network adapter 660 may communicate with other modules of the electronic device 600 via the bus 630. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 600, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage platforms, to name a few.
The embodiment of the invention also provides a computer readable storage medium for storing a program, and the program realizes the steps of the energy management method of the vehicle-mounted dual-source battery pack when being executed. In some possible embodiments, the aspects of the present invention may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps according to various exemplary embodiments of the present invention described in the above-mentioned electronic prescription flow processing method section of this specification, when the program product is run on the terminal device.
As shown above, the embodiment can expand the application range of the dual-source battery pack, improve the convenience of the dual-source battery pack, improve the endurance mileage on the premise of ensuring the dynamic property, the economical efficiency and the drivability, and greatly reduce the cost of the battery pack and the cost of the whole vehicle.
Fig. 10 is a schematic structural diagram of a computer-readable storage medium of the present invention. Referring to fig. 10, a program product 800 for implementing the above method according to an embodiment of the present invention is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable storage medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable storage medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
In summary, the present invention is directed to provide a method, a system, a device, and a storage medium for energy management of a vehicle-mounted dual-source battery pack, which can expand the application range of the dual-source battery pack, improve the convenience of the dual-source battery pack, improve the driving range on the premise of ensuring the dynamic property, the economic property, and the drivability, and greatly reduce the cost of the battery pack and the cost of the entire vehicle.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (11)

1. The energy management method of the vehicle-mounted double-source battery pack is characterized by comprising the following steps of:
s100, setting a navigation path;
s200, selecting one of the first battery pack and the second battery pack according to battery states of the first battery pack and the second battery pack to electrify the motor controller to drive the motor to rotate, wherein the battery states comprise a fault state, a high voltage state and an electric quantity of which the residual electric quantity exceeds a preset electric quantity threshold value;
s300, judging whether the electric quantity of the first battery pack and the second battery pack can reach the destination of the navigation path or not, if so, returning to the step S300, and if not, returning to the step S400;
s400, searching nearby charging stations, the current position and the destination along a navigation path to serve as network nodes, establishing paths among the network nodes, and forming a network node map according to the network nodes and the paths;
and S500, searching a network node closest to the destination as a next node within a range of taking the farthest distance which can be reached by the electric quantity of the current first battery pack and the current second battery pack as a radius from the previous node as a circle center, wherein the time required for reaching each node is the sum of passing time, charging time and battery replacement time.
2. The method for managing energy of a vehicle-mounted dual-source battery pack according to claim 1, wherein the step S200 comprises the steps of:
s201, carrying out low-voltage electrification;
s202, judging whether a first condition set is met at the same time, wherein the first condition set comprises that the first battery pack is free of faults and the residual electric quantity of the first battery pack is larger than a preset electric quantity threshold value, if yes, executing a step S203, and if not, executing a step S204;
s203, electrifying the first battery pack, and executing the step S222;
s204, judging whether a second condition combination is met or not, wherein the second condition combination comprises one state of configuring a second battery pack by a vehicle, having no fault in the second battery pack, having the residual capacity of the second battery pack larger than a preset capacity threshold value and not meeting the first condition set, if yes, executing a step S205, and if not, executing a step S206;
s205, electrifying the second battery pack, and executing the step S222;
s206, reporting the fault of the whole vehicle, and executing the step S222 when the high voltage is not applied;
and S222, ending.
3. The method for managing energy of a vehicle-mounted dual-source battery pack according to claim 2, wherein after step S203, step S222 further comprises:
s207, judging whether the first battery pack is successfully electrified, if so, executing a step S208, otherwise, lowering the high voltage of the first battery pack, and returning to the step S204;
s208, independently powering on the motor controller by the first battery pack;
s209, judging whether a third condition combination is simultaneously met, wherein the third condition combination comprises a fourth condition, a second battery pack is configured for the vehicle, the second battery pack is free of fault, the residual electric quantity of the second battery pack is greater than a preset electric quantity threshold value, and whether the rotating speed of the motor is less than or equal to the preset rotating speed threshold value; the fourth condition is that the remaining power of the first battery pack is smaller than a preset power threshold, the first battery pack has a fault or the selector switch enables one of the states, if yes, step S210 is executed, and if not, step S209 is returned;
s210, after the first battery pack is subjected to high voltage, the second battery pack is subjected to high voltage;
and S211, independently powering on the motor controller through the second battery pack.
4. The method for managing energy of a vehicle-mounted dual-source battery pack according to claim 3, wherein after step S208, step S222 further comprises the following steps:
s212, judging whether the current gear of the key is located in a full-vehicle electrified gear, if so, executing a step S213, and if not, returning to the step S212;
s213, the first battery pack is charged with high voltage, and step S222 is executed.
5. The method for managing energy of a vehicle-mounted dual-source battery pack according to claim 2, wherein after step S205, step S222 is preceded by:
s214, judging whether the high voltage on the second battery pack is successful, if so, executing a step S216, otherwise, executing a step S215;
s215, putting the second battery pack under high voltage, and executing the step S222;
s216, independently powering on the motor controller by the second battery pack;
s217, judging whether a fifth condition combination is met simultaneously, wherein the fifth condition combination comprises a sixth condition, no fault exists in the first battery pack, the residual electric quantity of the first battery pack is greater than a preset electric quantity threshold value, and whether the rotating speed of the motor is less than or equal to the preset rotating speed threshold value; the sixth condition is that the remaining power of the second battery pack is less than a preset power threshold, the second battery pack has a fault or the selector switch enables one of the states, if yes, step S218 is executed, and if not, step S217 is returned;
s218, after the second battery pack is subjected to high voltage, the first battery pack is subjected to high voltage;
and S219, independently powering on the motor controller through the first battery pack.
6. The method for managing energy of a vehicle-mounted dual-source battery pack according to claim 5, wherein after step S216, step S222 is preceded by the steps of:
s220, judging whether the current gear of the key is located in a full-vehicle electrified gear, if so, executing a step S221, and if not, returning to the step S220;
s221, the second battery pack is charged with high voltage, and step S222 is executed.
7. The method for energy management of a vehicle-mounted dual-source battery pack according to claim 1, wherein the first battery pack is a built-in rechargeable battery pack disposed in a vehicle, and the second battery pack is a detachable replaceable battery pack.
8. An energy management system of a vehicle-mounted dual-source battery pack for implementing the energy management method of the vehicle-mounted dual-source battery pack according to claim 1, comprising:
the battery pack control module is used for selecting one of the battery states of the first battery pack and the second battery pack to electrify the motor controller to drive the motor to rotate, wherein the battery state comprises a fault state, a high-voltage state and an electric quantity of which the residual electric quantity exceeds a preset electric quantity threshold value;
the navigation path module is used for setting a navigation path;
the route judging module is used for judging whether the electric quantity of the first battery pack and the second battery pack can reach the destination of the navigation route or not, if so, the network node module is executed, and if not, the network node module returns to the route judging module;
the network node module is used for searching nearby charging stations, the current position and the destination along a navigation path to serve as network nodes, establishing paths among the network nodes and forming a network node map according to the network nodes and the paths;
and the path prediction module searches a network node closest to the destination as a next node within a range of taking the farthest distance which can be reached by the electric quantity of the current first battery pack and the current second battery pack as a radius from the previous node as a circle center, and the time required for reaching each node is the sum of the passing time, the charging time and the battery replacement time.
9. The energy management system of the on-vehicle dual-source battery pack according to claim 8, wherein the first battery pack is a built-in rechargeable battery pack installed in a vehicle, and the second battery pack is a detachable replaceable battery pack.
10. An energy management device of a vehicle-mounted dual-source battery pack, comprising:
a processor;
a memory having stored therein executable instructions of the processor;
wherein the processor is configured to execute the steps of the energy management method of the on-vehicle dual-source battery pack according to any one of claims 1 to 7 via execution of the executable instructions.
11. A computer-readable storage medium storing a program, wherein the program is executed to implement the steps of the energy management method for the in-vehicle dual source battery pack according to any one of claims 1 to 7.
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