CN114655073A - Electric balance control method and device and electric automobile - Google Patents
Electric balance control method and device and electric automobile Download PDFInfo
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- CN114655073A CN114655073A CN202110093537.7A CN202110093537A CN114655073A CN 114655073 A CN114655073 A CN 114655073A CN 202110093537 A CN202110093537 A CN 202110093537A CN 114655073 A CN114655073 A CN 114655073A
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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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Life Sciences & Earth Sciences (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides an electric balance control method, an electric balance control device and an electric automobile, and relates to the technical field of electric automobiles, wherein the electric balance control method comprises the following steps: when the electric automobile is in a started state or a driving state, acquiring the output power of a direct-current power supply inverter, the available power of a storage battery, the basic load power and the controllable load power in real time; judging the relation between the sum of the output power of the direct-current power supply inverter and the available power of the storage battery and the sum of the basic load power and the controllable load power; when the relation meets a first preset relation, acquiring the state of charge of the storage battery; and controlling the working states of the storage battery and at least one controllable load according to the charge state of the storage battery, so that the electric automobile is in an electric balance state. The scheme of the invention actively controls the electric balance according to the real-time monitored electric power of the whole vehicle, thereby achieving the full utilization of the resources of the whole vehicle.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to an electric balance control method and device and an electric automobile.
Background
The conventional method for calculating the electric vehicle electric balance is a passive electric vehicle electric balance, namely, the output power of a direct current power supply inverter (DCDC) is calculated according to the electric load of the electric vehicle, so that the DCDC output power is ensured to meet the requirement of the maximum electric load of the electric vehicle. However, the electric balance calculation method has the problem of excessive DCDC matching capability, cannot reasonably utilize the energy resources of the whole vehicle, and causes the waste of the energy resources of the whole vehicle.
Disclosure of Invention
The embodiment of the invention aims to provide an electric balance control method and device and an electric automobile, so that the problem that the DCDC output power is excessive when the DCDC output power is determined according to the maximum electric load of the whole automobile in the prior art is solved.
In order to achieve the above object, an embodiment of the present invention provides an electric balance control method applied to an electric vehicle, including:
when the electric automobile is in a started state or a driving state, acquiring the output power of a direct-current power supply inverter, the available power of a storage battery, the basic load power and the controllable load power in real time;
judging the relation between the sum of the DCDC output power and the available power of the storage battery and the sum of the basic load power and the controllable load power;
when the relation meets a first preset relation, acquiring the state of charge of the storage battery;
and controlling the working states of the storage battery and at least one controllable load according to the charge state of the storage battery, so that the electric automobile is in an electric balance state.
Optionally, before obtaining the DCDC output power, the available power of the storage battery, the base load power, and the controllable load power in real time when the electric vehicle is in a started state or a driving state, the method further includes:
and communicating with the whole vehicle controller through a controller area network to acquire the vehicle state of the electric vehicle.
Optionally, when the electric vehicle is in a started state or a driving state, the DCDC output power, the available power of the storage battery, the base load power, and the controllable load power are obtained in real time, including:
the method comprises the steps that communication with a DCDC, a basic load and at least one controllable load is achieved through a controller area network, and DCDC output power, basic load power and controllable load power are obtained in real time;
and the system is communicated with the intelligent storage battery sensor through a serial communication network to obtain the available power of the storage battery in real time.
Optionally, when the relationship satisfies a first preset relationship, acquiring a state of charge of the storage battery includes:
and when the relation meets a first preset relation, communicating with the intelligent storage battery sensor through a serial communication network to acquire the charge state of the storage battery.
Optionally, the first preset relationship is that the sum of the DCDC output power and the battery available power is smaller than the sum of the base load power and the controllable load power.
Optionally, when the sum of the DCDC output power and the available power of the storage battery obtained in real time and the sum of the base load power and the controllable load power satisfy a second preset relationship, the electric vehicle is in an electric balance state;
wherein the second preset relationship is that the sum of the DCDC output power and the available power of the storage battery is greater than or equal to the sum of the base load power and the controllable load power.
Optionally, controlling the working states of the battery and the at least one controllable load to satisfy that the electric vehicle is in an electrical balance state according to the state of charge of the battery, including:
when the charge state of the storage battery is greater than or equal to the preset charge state, controlling the storage battery to start discharging;
and when the charge state of the storage battery is smaller than the preset charge state, controlling the storage battery to stop discharging, and closing at least one controllable load.
Optionally, the method includes controlling operating states of a battery and at least one controllable load according to the state of charge of the battery, so that the electric vehicle is in an electrical balance state, and further including:
when the state of charge of the storage battery is smaller than a preset state of charge, controlling the storage battery to stop discharging, and sending a command of closing the controllable load to the integrated cabin controller;
and after receiving the command of confirming to close the controllable loads, closing at least one controllable load.
Optionally, switching off at least one controllable load, comprising:
sequentially closing at least one controllable load according to a closing time sequence until the relation meets the second preset relation, and stopping closing the rest controllable loads;
wherein the turn-off sequence is a turn-off sequence of the at least one controllable load.
An embodiment of the present invention further provides an electrical balance control apparatus, including:
the first acquisition module is used for acquiring DCDC output power, available power of a storage battery, basic load power and controllable load power in real time when the electric automobile is in a started state or a driving state;
the judging module is used for judging the relation between the sum of the DCDC output power and the available power of the storage battery and the sum of the basic load power and the controllable load power;
the second acquisition module is used for acquiring the charge state of the storage battery when the relation meets a first preset relation;
and the control module is used for controlling the working states of the storage battery and the at least one controllable load according to the charge state of the storage battery, so that the electric automobile is in an electric balance state.
An embodiment of the invention further provides an electric automobile, which comprises the electric balance control device.
The technical scheme of the invention at least has the following beneficial effects:
in the scheme, when the electric automobile is in a started state or a driving state, the electric balance control method calculates and judges the relationship between the sum of the DCDC output power and the storage battery available power and the sum of the basic load power and the controllable load power by acquiring the DCDC output power, the storage battery available power, the basic load power and the controllable load power in real time; and when the relation meets a first preset relation, controlling the working states of the storage battery and the at least one controllable load according to the charge state of the storage battery, so that the electric automobile is in an electric balance state, reasonably utilizing the energy resources of the whole automobile and controlling the electric balance of the whole automobile.
Drawings
FIG. 1 is a flow chart of an electrical balance control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of an electrical balance control method according to the present invention;
FIG. 3 is a second flowchart of an electrical balance control method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an electrical balance control apparatus according to an embodiment of the present invention.
Detailed Description
To make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides an electric balance control method, an electric balance control device and an electric automobile, aiming at the problem that in the prior art, the DCDC output power is excessive due to the fact that the DCDC output power is determined according to the maximum electric load of the whole automobile.
As shown in fig. 1, an embodiment of the present invention provides an electric balance control method applied to an electric vehicle, including:
step S11, when the electric automobile is in a started state or a driving state, acquiring DCDC output power, available power of a storage battery, basic load power and controllable load power in real time;
in this step, the electric balance control method may be applied to a power supply control module (EEM) of an electric vehicle, where the power supply control module acquires DCDC output power, available power of a storage battery, basic load power, and controllable load power in real time to monitor a power supply network of the entire vehicle.
Step S12, judging the relation between the sum of the DCDC output power and the available power of the storage battery and the sum of the basic load power and the controllable load power;
in this step, the sum of the DCDC output power and the available power of the storage battery, and the sum of the base load power and the controllable load power are calculated in real time. The sum of the DCDC output power and the available power of the storage battery can be understood as the total available power of the whole vehicle, and the sum of the basic load power and the controllable load power can be understood as the total power consumption of the whole vehicle. And meanwhile, the magnitude relation between the total available power and the total power consumption is required to be judged while the real-time calculation is carried out, and whether the electric automobile is in an electric balance state or not is determined.
Step S13, when the relation meets a first preset relation, acquiring the state of charge of the storage battery;
in this step, the battery state of charge represents the ratio of the remaining capacity of the battery to the capacity in a fully charged state. And when the relation meets a first preset relation, sending an active electric balance instruction to the storage battery and the controllable load, and preparing the electric automobile to enter a power limiting mode.
And step S14, controlling the working states of the storage battery and at least one controllable load according to the state of charge of the storage battery, and enabling the electric automobile to be in an electric balance state.
In the step, the phenomenon of over-discharge of the storage battery is prevented and the service life of the storage battery is prevented from being influenced according to the charge state of the storage battery and the working state of the storage battery.
In this embodiment of the present invention, the electric balance control method controls the working states of the storage battery and the at least one controllable load by monitoring, calculating and judging the relationship between the sum of the DCDC output power and the available power of the storage battery and the sum of the base load power and the controllable load power in real time, so as to keep the electric vehicle in an electric balance state. Through dynamic real-time monitoring and management, the phenomena of over-discharge of the storage battery and excessive DCDC output power are prevented, and reasonable distribution and utilization of the energy resources of the whole vehicle are achieved.
It should be noted that, as shown in fig. 2, a specific embodiment of the electrical balance control method according to the embodiment of the present invention is described:
the electric balance control method can be applied to a power supply control module, wherein a basic load, a controllable load, the power supply control module and a vehicle control unit are communicated through a vehicle control unit local area network; the power control module is used as a gateway between the intelligent storage battery sensor and the vehicle controller local area network, can route the serial communication network message of the intelligent storage battery sensor to the vehicle controller local area network, and can route the vehicle controller local area network message on the vehicle controller local area network to the serial communication network and then send the message to the intelligent storage battery sensor.
The DCDC converts high voltage of a power battery of the electric automobile into low voltage and then supplies power to the basic load and the storage battery respectively.
When the electric automobile is in a started state or a driving state, before the DCDC output power, the available power of the storage battery, the basic load power and the controllable load power are obtained in real time, the method further comprises the following steps:
and communicating with the whole vehicle controller through a controller area network to acquire the vehicle state of the electric vehicle.
Step S11: when the electric automobile is in a started state or a driving state, acquiring DCDC output power, available power of a storage battery, basic load power and controllable load power in real time, wherein the DCDC output power, the available power of the storage battery, the basic load power and the controllable load power comprise:
the method comprises the steps that communication with a DCDC, a basic load and at least one controllable load is achieved through a controller area network, and DCDC output power, basic load power and controllable load power are obtained in real time;
and the system is communicated with the intelligent storage battery sensor through a serial communication network to obtain the available power of the storage battery in real time.
And when the relationship satisfies a first preset relationship, acquiring the state of charge of the storage battery, including:
and when the relation meets a first preset relation, communicating with the intelligent storage battery sensor through a serial communication network to acquire the charge state of the storage battery.
In an optional embodiment of the present invention, the first preset relationship is that a sum of the DCDC output power and the available power of the storage battery is smaller than a sum of the base load power and the controllable load power.
It should be noted that, when the relationship satisfies the first preset relationship, the electric vehicle is in an unbalanced power consumption state, and the power supply control module needs to send an active electrical balance instruction to the storage battery and the controllable load to control the working states of the storage battery and the controllable load.
In an optional embodiment of the present invention, when the sum of the DCDC output power and the available power of the storage battery obtained in real time and the sum of the base load power and the controllable load power satisfy a second preset relationship, the electric vehicle is in an electrical balance state;
wherein the second preset relationship is that the sum of the DCDC output power and the available power of the storage battery is greater than or equal to the sum of the base load power and the controllable load power.
It should be noted that, when the relationship satisfies the second preset relationship, the electric vehicle is currently in an electric balance state, the power supply control module does not need to send an active electric balance instruction, and the power supply control module continues to execute step 11 and step 12 for performing real-time monitoring.
Specifically, step S14: controlling the working states of the storage battery and the at least one controllable load according to the charge state of the storage battery to enable the electric automobile to be in an electric balance state, and the method comprises the following steps:
when the charge state of the storage battery is greater than or equal to the preset charge state, controlling the storage battery to start discharging;
and when the state of charge of the storage battery is smaller than the preset state of charge, controlling the storage battery to stop discharging, and closing at least one controllable load.
Here, the preset state of charge is between 60% and 80%, and preferably, the preset state of charge is 70%.
When the relationship meets the first preset relationship, an active electric balance control instruction is sent to the storage battery to obtain the state of charge of the storage battery;
when the state of charge of the storage battery is larger than or equal to 70%, controlling a DCDC to stop supplying power to the storage battery, starting discharging the storage battery, and enabling the sum of the DCDC output power and the available power of the storage battery to be larger than or equal to the sum of the basic load power and the controllable load power, wherein the electric automobile is ready to enter a power limiting mode;
when the state of charge of the storage battery is less than 70%, or when the storage battery is discharged to the state of charge of the storage battery is less than 70% by the state of charge of the storage battery which is more than or equal to 70%, the storage battery is controlled to stop discharging, the over-discharge of the storage battery is prevented, the power shortage condition is generated, meanwhile, the electric automobile enters a power limiting mode, at least one controllable load is closed, and the electric balance of the electric automobile is achieved.
Further, according to the state of charge of the storage battery, the working states of the storage battery and at least one controllable load are controlled, so that the electric automobile is in an electric balance state, and the method further comprises the following steps:
when the state of charge of the storage battery is smaller than the preset state of charge, controlling the storage battery to stop discharging, and sending a command of closing the controllable load to the integrated cabin controller;
and after receiving the command of confirming to close the controllable loads, closing at least one controllable load.
It should be noted that when at least one controllable load is turned off, a command to turn off the controllable load may be sent to the integrated cabin controller, which may display it to the user; at least one controllable load may be turned off upon receiving a command from a user to turn off the controllable load upon confirmation input from the integrated cabin controller.
After the electric vehicle exits the power limited mode, at least one of the controllable loads exits the off mode.
And when the DCDC charges the storage battery to be greater than or equal to 70%, the electric automobile exits the power limiting mode.
Further, shutting down the at least one controllable load comprises:
sequentially closing at least one controllable load according to a closing time sequence until the relation meets the second preset relation, and stopping closing the rest controllable loads;
wherein the turn-off sequence is a turn-off sequence of the at least one controllable load.
It should be noted that at least one controllable load does not need to be turned off completely, and may be turned off sequentially according to a turn-off timing sequence, and when the sum of the DCDC output power and the available power of the storage battery is greater than or equal to the sum of the base load power and the controllable load power, the remaining controllable loads may be stopped to be turned off.
As shown in fig. 3, another flowchart of the electrical balance control method according to the embodiment of the present invention is described:
step S31: acquiring that the electric automobile is in a started state or a driving state;
step S32: the power supply management module judges whether the sum of the DCDC output power and the available power of the storage battery is smaller than the sum of the basic load power and the controllable load power;
step S33: if not, the power supply management module does not send an active electric balance control instruction to the controllable load;
step S34: if yes, the power management module acquires the charge state of the storage battery;
step S35: judging whether the charge state of the storage battery is greater than or equal to 70%;
step S36: if so, the storage battery starts to discharge to meet the power consumption requirement of the electric automobile, so that the electric automobile is in an electric balance state;
step S37: if not, the storage battery stops discharging, the electric automobile enters a power limiting mode, and the controllable loads are sequentially closed according to a closing time sequence, so that the electric automobile is in an electric balance state;
step S38: after the electric vehicle exits the limited power mode, the controlled load that was shut down exits the shut down mode.
In the embodiment of the invention, the electric balance control method can dynamically monitor and manage the DCDC output power, the available power of the storage battery, the basic load power and the controllable load power in real time, fully utilize the energy management of the whole vehicle, enable the whole vehicle to be in an electric balance state, prevent the over-discharge of the storage battery and achieve the reasonable distribution and utilization of the energy resources of the whole vehicle.
As shown in fig. 4, another embodiment of the present invention further provides an electric balance control apparatus, including:
the first obtaining module 41 is configured to obtain DCDC output power, available power of the storage battery, basic load power, and controllable load power in real time when the electric vehicle is in a started state or a driving state;
a determining module 42, configured to determine a relationship between a sum of the DCDC output power and the available power of the storage battery and a sum of the base load power and the controllable load power;
the second obtaining module 43 is configured to obtain the state of charge of the storage battery when the relationship satisfies a first preset relationship;
and the control module 44 is configured to control the working states of the storage battery and the at least one controllable load according to the state of charge of the storage battery, so that the electric vehicle is in an electrical balance state.
In this embodiment of the present invention, the electric balance control apparatus is an apparatus capable of executing the above-mentioned electric balance control method, and all embodiments of the above-mentioned electric balance control method are applicable to the apparatus and can achieve the same or similar beneficial effects.
Specifically, the apparatus is further configured to:
and communicating with the whole vehicle controller through a controller area network to acquire the vehicle state of the electric vehicle.
Further, the first obtaining module 41 is specifically configured to:
respectively communicating with the direct-current power supply inverter, the basic load and at least one controllable load through a controller local area network, and acquiring the output power of the direct-current power supply inverter, the basic load power and the controllable load power in real time;
and the system is communicated with the intelligent storage battery sensor through a serial communication network to obtain the available power of the storage battery in real time.
Further, the second obtaining module 43 is specifically configured to:
and when the relation meets a first preset relation, communicating with the intelligent storage battery sensor through a serial communication network to acquire the charge state of the storage battery.
Specifically, the first preset relationship is that the sum of the output power of the direct-current power supply inverter and the available power of the storage battery is smaller than the sum of the basic load power and the controllable load power.
Specifically, when the sum of the output power of the direct-current power supply inverter and the available power of the storage battery obtained in real time and the sum of the basic load power and the controllable load power meet a second preset relationship, the electric vehicle is in an electric balance state;
the second preset relation is that the sum of the output power of the direct-current power supply inverter and the available power of the storage battery is greater than or equal to the sum of the basic load power and the controllable load power.
Specifically, the control module 44 is specifically configured to:
when the charge state of the storage battery is greater than or equal to the preset charge state, controlling the storage battery to start discharging;
and when the state of charge of the storage battery is smaller than the preset state of charge, controlling the storage battery to stop discharging, and closing at least one controllable load.
Further, the control module 44 is further configured to:
when the state of charge of the storage battery is smaller than the preset state of charge, controlling the storage battery to stop discharging, and sending a command of closing the controllable load to the integrated cabin controller;
and after receiving the command of confirming to close the controllable loads, closing at least one controllable load.
Specifically, shutting down at least one controllable load comprises:
sequentially closing at least one controllable load according to a closing time sequence until the relation meets the second preset relation, and stopping closing the rest controllable loads;
wherein the turn-off sequence is a turn-off sequence of the at least one controllable load.
Another embodiment of the present invention further provides an electric vehicle, including the electric balance control device as described above.
In the embodiment of the present invention, the electric vehicle adopts the electric balance control device, and all embodiments of the electric balance control device are applicable to the electric vehicle, and can achieve the same or similar beneficial effects, and are not described herein again.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. An electric balance control method is applied to an electric automobile and is characterized by comprising the following steps:
when the electric automobile is in a started state or a driving state, acquiring the output power of a direct-current power supply inverter, the available power of a storage battery, the basic load power and the controllable load power in real time;
judging the relation between the sum of the output power of the direct-current power supply inverter and the available power of the storage battery and the sum of the basic load power and the controllable load power;
when the relation meets a first preset relation, acquiring the state of charge of the storage battery;
and controlling the working states of the storage battery and at least one controllable load according to the charge state of the storage battery, so that the electric automobile is in an electric balance state.
2. The electrical balance control method according to claim 1, wherein before acquiring the dc power supply inverter output power, the battery available power, the base load power and the controllable load power in real time when the electric vehicle is in a started state or a driving state, the method further comprises:
and communicating with the whole vehicle controller through a controller area network to acquire the vehicle state of the electric vehicle.
3. The electrical balance control method according to claim 1, wherein the real-time obtaining of the dc power inverter output power, the battery available power, the base load power and the controllable load power when the electric vehicle is in a started state or a driving state comprises:
respectively communicating with the direct-current power supply inverter, the basic load and at least one controllable load through a controller local area network, and acquiring the output power of the direct-current power supply inverter, the basic load power and the controllable load power in real time;
and the system is communicated with the intelligent storage battery sensor through a serial communication network to obtain the available power of the storage battery in real time.
4. The electrical balance control method of claim 1, wherein obtaining the state of charge of the battery when the relationship satisfies a first predetermined relationship comprises:
and when the relation meets a first preset relation, communicating with the intelligent storage battery sensor through a serial communication network to acquire the charge state of the storage battery.
5. The method of claim 1, wherein the first predetermined relationship is that the sum of the dc power inverter output power and the battery available power is less than the sum of the base load power and the controllable load power.
6. The electrical balance control method according to claim 1, wherein the electric vehicle is in an electrical balance state when the sum of the real-time acquired dc power inverter output power and the available power of the storage battery and the sum of the base load power and the controllable load power satisfy a second preset relationship;
the second preset relation is that the sum of the output power of the direct-current power supply inverter and the available power of the storage battery is larger than or equal to the sum of the basic load power and the controllable load power.
7. The method of claim 6, wherein controlling the operating states of the battery and the at least one controllable load according to the battery state of charge to electrically balance the electric vehicle comprises:
when the charge state of the storage battery is greater than or equal to the preset charge state, controlling the storage battery to start discharging;
and when the charge state of the storage battery is smaller than the preset charge state, controlling the storage battery to stop discharging, and closing at least one controllable load.
8. The method of claim 6, wherein the operating states of the battery and the at least one controllable load are controlled according to the battery state of charge to electrically balance the electric vehicle, further comprising:
when the state of charge of the storage battery is smaller than the preset state of charge, controlling the storage battery to stop discharging, and sending a command of closing the controllable load to the integrated cabin controller;
and after receiving the command of confirming to close the controllable loads, closing at least one controllable load.
9. The method of claim 7 or 8, wherein switching off at least one controllable load comprises:
sequentially closing at least one controllable load according to a closing time sequence until the relation meets the second preset relation, and stopping closing the rest controllable loads;
wherein the turn-off sequence is a turn-off sequence of the at least one controllable load.
10. An electrical balance control apparatus, comprising:
the first acquisition module is used for acquiring the output power of the direct-current power supply inverter, the available power of the storage battery, the basic load power and the controllable load power in real time when the electric automobile is in a started state or a driving state;
the judging module is used for judging the relation between the sum of the output power of the direct-current power supply inverter and the available power of the storage battery and the sum of the basic load power and the controllable load power;
the second acquisition module is used for acquiring the charge state of the storage battery when the relation meets a first preset relation;
and the control module is used for controlling the working states of the storage battery and the at least one controllable load according to the charge state of the storage battery, so that the electric automobile is in an electric balance state.
11. An electric vehicle comprising the electric balance control apparatus as claimed in claim 10.
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| CN114655073B (en) | 2024-04-09 |
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