CN109823229B - Power control method, device and system for power battery and vehicle - Google Patents
Power control method, device and system for power battery and vehicle Download PDFInfo
- Publication number
- CN109823229B CN109823229B CN201910099110.0A CN201910099110A CN109823229B CN 109823229 B CN109823229 B CN 109823229B CN 201910099110 A CN201910099110 A CN 201910099110A CN 109823229 B CN109823229 B CN 109823229B
- Authority
- CN
- China
- Prior art keywords
- power
- discharge
- battery
- value
- power battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The invention belongs to the technical field of vehicles, and particularly provides a power battery power control method, a device, a system and a vehicle, aiming at solving the problem that the actual power of the whole vehicle exceeds the rated power of a battery, so that the power of a battery pack is over discharged for a long time and the service life of the battery pack is influenced in the prior art. For the purpose, the power battery power control method provided by the invention comprises the steps of obtaining a first discharge power value of the power battery according to the voltage and the discharge current of the power battery; obtaining a second discharge power value of the power battery according to the adjustment result of the long-term correction power of the power battery, and selecting the smaller value of the two as the discharge power; and adjusting the discharging power according to the power deviation between the discharging power and the whole vehicle power demand value of the vehicle where the power battery is located. Based on the steps, the method provided by the invention has the beneficial effects of realizing power over-discharge protection of the power battery and prolonging the service life of the battery.
Description
Technical Field
The invention belongs to the technical field of vehicles, and particularly relates to a power battery power control method, device and system and a vehicle.
Background
In a pure electric vehicle or a hybrid electric vehicle, under the working condition of motor driving or power generation, a battery is used as a power source, and electric energy output or recovery is required. The battery management system collects battery parameters, monitors the battery state and controls the charge and discharge power of the battery so as to achieve the purpose of protecting and limiting the working state of the battery.
The power battery is formed by combining a series of single batteries in a series connection mode, a parallel connection mode and the like, but the available energy of the battery pack is reduced due to the fact that the battery pack has different parameters such as capacity and internal resistance caused by assembly errors and production dispersion errors in batch production and assembly, and continuous fatigue and aging of the battery pack in the using process. Meanwhile, the complexity of the driving working condition often causes the actual power of the whole vehicle to exceed the rated power of the battery, and the battery pack works under the working condition, so that the power of the battery pack is over discharged for a long time, and the service life of the battery pack is influenced.
In summary, differences of battery packs, aging of the battery packs and complexity of driving conditions all need a power control strategy made by a vehicle controller to reasonably utilize battery energy, and the service life of the battery is prolonged.
Therefore, how to provide a solution for reasonably utilizing the energy of the battery and prolonging the service life of the battery is a problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the actual power of the entire vehicle exceeds the rated power of the battery, which causes the power of the battery pack to be over discharged for a long time and affects the service life of the battery pack, a first aspect of the present invention provides a power battery power control method, including:
acquiring a first discharge power value of the power battery according to the voltage and the discharge current of the power battery;
judging whether the power battery is in an over-discharge state or not and selectively adjusting the long-term correction power of the power battery according to the judgment result;
acquiring a second discharge power value of the power battery according to the adjustment result of the long-term correction power, and selecting the smaller value of the first discharge power value and the second discharge power value as the discharge power of the power battery;
and adjusting the discharge power according to the power deviation between the discharge power and the finished vehicle power demand value of the vehicle where the power battery is located, and controlling the discharge power of the power battery according to the adjusted discharge power.
Optionally, in the power battery power control method, the step of "obtaining the first discharge power value of the power battery according to the voltage and the discharge current of the power battery" specifically includes:
acquiring a discharge coefficient of the power battery according to the discharge current;
obtaining a discharge current offset value of the power battery according to the product of the discharge coefficient and a preset discharge current limit value, and selecting the smaller value of the discharge current offset value and a preset maximum discharge current offset value as a final discharge current offset value of the power battery;
acquiring a discharging current value of the power battery according to the difference between the preset discharging current limit value and the final discharging current offset value;
and acquiring the first discharge power value according to the product of the discharge current value and the voltage of the power battery.
Optionally, in the power battery power control method, the step of "selectively adjusting the long-term correction power of the power battery according to the determination result" specifically includes:
if the power battery is in an over-discharge state, adjusting the long-term correction power;
and if the power battery is not in an over-discharge state, not adjusting the long-term correction power.
Optionally, in the power control method for a power battery, the method further includes determining whether the power battery is in an over-discharge state, and the method specifically includes:
acquiring the continuous discharge power of the power battery within a preset time range;
judging whether the continuous discharging power is larger than the whole vehicle power demand value or not,
if so, determining that the power battery is in an over-discharge state;
if not, determining that the power battery is not in an over-discharge state.
Optionally, in the power battery power control method, the step of "adjusting the long-term correction power" specifically includes:
comparing the overrun power of the power battery with a preset power threshold value;
and adjusting the long-term correction power according to the comparison result.
Optionally, in the power battery power control method, the step of "comparing the overrun power of the power battery with a preset power threshold" specifically includes:
acquiring a negative difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle;
integrating the negative difference value according to a preset integration duration and comparing an integration result with the power threshold;
wherein the preset integration time period depends on the battery capacity of the power battery.
Optionally, in the power battery power control method, the step of "adjusting the long-term correction power according to the comparison result" specifically includes:
obtaining long-term correction power adjusted according to the last comparison result and obtaining first long-term correction power of the power battery according to the long-term correction power;
if the overrun power of the power battery is larger than or equal to the power threshold, acquiring the current long-term correction power of the power battery based on the sum of the first long-term correction power and a preset regulation power value;
if the overrun power of the power battery is smaller than the power threshold, acquiring the current long-term correction power of the power battery based on the difference between the first long-term correction power and the preset regulation power value;
wherein the preset regulation power value depends on the power threshold.
Optionally, in the power control method for the power battery, the step of "obtaining the second discharge power value of the power battery according to the adjustment result of the long-term correction power" specifically includes:
acquiring a power deviation value of the power battery according to the continuous discharge power and the battery temperature of the power battery;
acquiring a third discharge power value of the power battery according to the difference between the continuous discharge power and the power offset value;
and acquiring a second discharge power value of the power battery according to the sum of the third discharge power value and the adjustment result of the long-term correction power.
Optionally, in the power battery power control method, the step of "adjusting the discharge power and controlling the discharge power of the power battery according to the adjusted discharge power" specifically includes:
performing PI regulation on the discharge power according to the power deviation;
acquiring the adjusted discharge power according to the sum of the PI regulation result and the discharge power;
and controlling the discharge power of the power battery according to the adjusted discharge power.
Optionally, in the power battery power control method, before the step of "PI-adjusting the discharge power according to the power deviation", the method further includes:
determining whether the power deviation is less than 0,
if yes, executing the step of carrying out PI regulation on the discharge power according to the power deviation;
if not, not performing PI regulation.
Optionally, in the power battery power control method, the step of "performing PI adjustment on the discharge power according to the power deviation" specifically includes:
obtaining proportional adjustment power according to the power deviation and a proportional adjustment coefficient corresponding to the power deviation;
acquiring integral adjusting power according to the power deviation and an integral adjusting coefficient corresponding to the power deviation;
and adding the proportional regulation power and the integral regulation power to obtain a PI regulation result.
The second aspect of the present invention also provides a power battery power control system, including:
the first acquisition module is configured to acquire a first discharge power value of the power battery according to the voltage and the discharge current of the power battery;
the first adjusting module is configured to judge whether the power battery is in an over-discharge state or not and selectively adjust the long-term correction power of the power battery according to the judgment result;
the second obtaining module is configured to obtain a second discharge power value of the power battery according to the adjustment result of the long-term correction power, and select the smaller value of the first discharge power value and the second discharge power value as the discharge power of the power battery;
and the second adjusting module is configured to adjust the discharging power according to the power deviation between the discharging power and the finished vehicle power demand value of the vehicle where the power battery is located, and control the discharging power of the power battery according to the adjusted discharging power.
Optionally, in the power battery power control system, the first obtaining module is further configured to:
acquiring a discharge coefficient of the power battery according to the discharge current;
obtaining a discharge current offset value of the power battery according to the product of the discharge coefficient and a preset discharge current limit value, and selecting the smaller value of the discharge current offset value and a preset maximum discharge current offset value as a final discharge current offset value of the power battery;
acquiring a discharging current value of the power battery according to the difference between the preset discharging current limit value and the final discharging current offset value;
and acquiring the first discharge power value according to the product of the discharge current value and the voltage of the power battery.
Optionally, in the power battery power control system, the first adjusting module is further configured to perform the following operations:
if the power battery is in an over-discharge state, adjusting the long-term correction power;
and if the power battery is not in an over-discharge state, not adjusting the long-term correction power.
Optionally, in the power battery power control system, the first adjusting module is further configured to perform the following operations:
acquiring the continuous discharge power of the power battery within a preset time range;
judging whether the continuous discharging power is larger than the whole vehicle power demand value or not,
if so, determining that the power battery is in an over-discharge state;
if not, determining that the power battery is not in an over-discharge state.
Optionally, in the power battery power control system, the first adjusting module is further configured to perform the following operations:
comparing the overrun power of the power battery with a preset power threshold value;
and adjusting the long-term correction power according to the comparison result.
Optionally, in the power battery power control system, the first adjusting module is further configured to perform the following operations:
acquiring a negative difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle;
integrating the negative difference value according to a preset integration duration and comparing an integration result with the power threshold;
wherein the preset integration time period depends on the battery capacity of the power battery.
Optionally, in the power battery power control system, the first adjusting module is further configured to perform the following operations:
obtaining long-term correction power adjusted according to the last comparison result and obtaining first long-term correction power of the power battery according to the long-term correction power;
if the overrun power of the power battery is larger than or equal to the power threshold, acquiring the current long-term correction power of the power battery based on the sum of the first long-term correction power and a preset regulation power value;
if the overrun power of the power battery is smaller than the power threshold, acquiring the current long-term correction power of the power battery based on the difference between the first long-term correction power and the preset regulation power value;
wherein the preset regulation power value depends on the power threshold.
Optionally, in the power battery power control system, the second obtaining module is further configured to:
acquiring a power deviation value of the power battery according to the continuous discharge power and the battery temperature of the power battery;
acquiring a third discharge power value of the power battery according to the difference between the continuous discharge power and the power offset value;
and acquiring a second discharge power value of the power battery according to the sum of the third discharge power value and the adjustment result of the long-term correction power.
Optionally, in the power battery power control system, the second adjusting module is further configured to perform the following operations:
performing PI regulation on the discharge power according to the power deviation;
acquiring the adjusted discharge power according to the sum of the PI regulation result and the discharge power;
and controlling the discharge power of the power battery according to the adjusted discharge power.
Optionally, in the power battery power control system, the second adjusting module further includes a PI regulation activation unit configured to perform the following operations:
determining whether the power deviation is less than 0,
if yes, executing the step of carrying out PI regulation on the discharge power according to the power deviation;
if not, not performing PI regulation.
Optionally, in the power battery power control system, the second adjusting module is further configured to perform the following operations:
obtaining proportional adjustment power according to the power deviation and a proportional adjustment coefficient corresponding to the power deviation;
acquiring integral adjusting power according to the power deviation and an integral adjusting coefficient corresponding to the power deviation;
and adding the proportional regulation power and the integral regulation power to obtain a PI regulation result.
The third aspect of the invention also provides an on-board control system, which comprises the power battery power control system.
The fourth aspect of the invention also provides a vehicle including the on-vehicle control system described above.
The fifth aspect of the present invention also provides a storage device, in which a plurality of programs are stored, the programs being adapted to be loaded by a processor to execute the power battery power control method described above.
The sixth aspect of the present invention also provides a control apparatus, including a processor and a storage device; the storage device is suitable for storing a plurality of programs; the program is suitable for being loaded by the processor to execute the power battery power control method.
Compared with the closest prior art, the technical scheme at least has the following beneficial effects:
1. the power control method of the power battery mainly comprises the following steps: acquiring a first discharge power value of the power battery according to the voltage and the discharge current of the power battery; obtaining a second discharge power value of the power battery according to the adjustment result of the long-term correction power of the power battery, and selecting the smaller value of the two as the discharge power; and adjusting the discharging power according to the power deviation between the discharging power and the whole vehicle power demand value of the vehicle where the power battery is located. Based on the steps, the power battery power control method can adjust the discharge power of the power battery according to the discharge power of the power battery and the condition of the power requirement value of the whole vehicle, reasonably utilize the energy of the power battery and prolong the service life of the battery.
2. The power battery power control method provided by the invention can judge whether the power battery is in an over-discharge state, if the power battery is in the over-discharge state, the long-term correction power is adjusted, the long-term correction power can adjust the discharge power of the power battery, the power battery can adapt to power values beyond the discharge power of the power battery in a gradual change manner, the open-loop control characteristic of a vehicle-mounted control system on the discharge power of the power battery is improved through closed-loop adjustment, the closed-loop adjustment time is shortened, and the time of the extreme working state of the power battery is reduced.
3. The power battery power control method provided by the invention can perform PI regulation on the discharge power according to the power deviation between the discharge power of the power battery and the power demand value of the whole vehicle where the power battery is located, wherein the battery discharge power regulation can be accelerated through proportional regulation, the error is reduced, the power battery power over-discharge is reduced in advance, and the steady-state error can be eliminated through integral regulation, so that the power battery power over-discharge protection can be effectively realized.
Scheme 1, a power battery power control method, characterized in that, the power battery power control method includes:
acquiring a first discharge power value of the power battery according to the voltage and the discharge current of the power battery;
judging whether the power battery is in an over-discharge state or not and selectively adjusting the long-term correction power of the power battery according to the judgment result;
acquiring a second discharge power value of the power battery according to the adjustment result of the long-term correction power, and selecting the smaller value of the first discharge power value and the second discharge power value as the discharge power of the power battery;
and adjusting the discharge power according to the power deviation between the discharge power and the finished vehicle power demand value of the vehicle where the power battery is located, and controlling the discharge power of the power battery according to the adjusted discharge power.
Scheme 2 and the power battery power control method according to scheme 1, wherein the step of obtaining the first discharge power value of the power battery according to the voltage and the discharge current of the power battery specifically includes:
acquiring a discharge coefficient of the power battery according to the discharge current;
obtaining a discharge current offset value of the power battery according to the product of the discharge coefficient and a preset discharge current limit value, and selecting the smaller value of the discharge current offset value and a preset maximum discharge current offset value as a final discharge current offset value of the power battery;
acquiring a discharging current value of the power battery according to the difference between the preset discharging current limit value and the final discharging current offset value;
and acquiring the first discharge power value according to the product of the discharge current value and the voltage of the power battery.
The power battery power control method according to claim 3 or 1, wherein the step of selectively adjusting the long-term correction power of the power battery according to the determination result specifically includes:
if the power battery is in an over-discharge state, adjusting the long-term correction power;
and if the power battery is not in an over-discharge state, not adjusting the long-term correction power.
acquiring the continuous discharge power of the power battery within a preset time range;
judging whether the continuous discharging power is larger than the whole vehicle power demand value or not,
if so, determining that the power battery is in an over-discharge state;
if not, determining that the power battery is not in an over-discharge state.
The power battery power control method according to claim 5 or 3, wherein the step of adjusting the long-term correction power specifically includes:
comparing the overrun power of the power battery with a preset power threshold value;
and adjusting the long-term correction power according to the comparison result.
Scheme 6 and the power battery power control method according to scheme 5, wherein the step of comparing the overrun power of the power battery with a preset power threshold specifically comprises:
acquiring a negative difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle;
integrating the negative difference value according to a preset integration duration and comparing an integration result with the power threshold;
wherein the preset integration time period depends on the battery capacity of the power battery.
The power battery power control method according to claim 7 or 5, wherein the step of "adjusting the long-term correction power according to the comparison result" specifically includes:
obtaining long-term correction power adjusted according to the last comparison result and obtaining first long-term correction power of the power battery according to the long-term correction power;
if the overrun power of the power battery is larger than or equal to the power threshold, acquiring the current long-term correction power of the power battery based on the sum of the first long-term correction power and a preset regulation power value;
if the overrun power of the power battery is smaller than the power threshold, acquiring the current long-term correction power of the power battery based on the difference between the first long-term correction power and the preset regulation power value;
wherein the preset regulation power value depends on the power threshold.
Scheme 8 and the power battery power control method according to scheme 1, wherein the step of obtaining the second discharge power value of the power battery according to the adjustment result of the long-term correction power specifically includes:
acquiring a power deviation value of the power battery according to the continuous discharge power and the battery temperature of the power battery;
acquiring a third discharge power value of the power battery according to the difference between the continuous discharge power and the power offset value;
and acquiring a second discharge power value of the power battery according to the sum of the third discharge power value and the adjustment result of the long-term correction power.
The method according to claim 9 and claim 1, wherein the step of "adjusting the discharge power and controlling the discharge power of the power battery according to the adjusted discharge power" includes:
performing PI regulation on the discharge power according to the power deviation;
acquiring the adjusted discharge power according to the sum of the PI regulation result and the discharge power;
and controlling the discharge power of the power battery according to the adjusted discharge power.
The power battery power control method according to claim 10 or 9, wherein before the step of "PI-adjusting the discharge power according to the power deviation", the method further includes:
determining whether the power deviation is less than 0,
if yes, executing the step of carrying out PI regulation on the discharge power according to the power deviation;
if not, not performing PI regulation.
The power battery power control method according to claim 11 or 9, wherein the step of performing PI regulation on the discharge power according to the power deviation specifically includes:
obtaining proportional adjustment power according to the power deviation and a proportional adjustment coefficient corresponding to the power deviation;
acquiring integral adjusting power according to the power deviation and an integral adjusting coefficient corresponding to the power deviation;
and adding the proportional regulation power and the integral regulation power to obtain a PI regulation result.
Scheme 12, a power battery power control system, characterized in that, power battery power control system includes:
the first acquisition module is configured to acquire a first discharge power value of the power battery according to the voltage and the discharge current of the power battery;
the first adjusting module is configured to judge whether the power battery is in an over-discharge state or not and selectively adjust the long-term correction power of the power battery according to the judgment result;
the second obtaining module is configured to obtain a second discharge power value of the power battery according to the adjustment result of the long-term correction power, and select the smaller value of the first discharge power value and the second discharge power value as the discharge power of the power battery;
and the second adjusting module is configured to adjust the discharging power according to the power deviation between the discharging power and the finished vehicle power demand value of the vehicle where the power battery is located, and control the discharging power of the power battery according to the adjusted discharging power.
The power battery power control system of claim 13 and claim 12, wherein the first obtaining module is further configured to:
acquiring a discharge coefficient of the power battery according to the discharge current;
obtaining a discharge current offset value of the power battery according to the product of the discharge coefficient and a preset discharge current limit value, and selecting the smaller value of the discharge current offset value and a preset maximum discharge current offset value as a final discharge current offset value of the power battery;
acquiring a discharging current value of the power battery according to the difference between the preset discharging current limit value and the final discharging current offset value;
and acquiring the first discharge power value according to the product of the discharge current value and the voltage of the power battery.
The power battery power control system of claim 14 or 12, wherein the first adjusting module is further configured to:
if the power battery is in an over-discharge state, adjusting the long-term correction power;
and if the power battery is not in an over-discharge state, not adjusting the long-term correction power.
The power battery power control system of claim 15 or 14, wherein the first adjusting module is further configured to perform the following operations:
acquiring the continuous discharge power of the power battery within a preset time range;
judging whether the continuous discharging power is larger than the whole vehicle power demand value or not,
if so, determining that the power battery is in an over-discharge state;
if not, determining that the power battery is not in an over-discharge state.
The power battery power control system of claim 16 or 14, wherein the first adjusting module is further configured to:
comparing the overrun power of the power battery with a preset power threshold value;
and adjusting the long-term correction power according to the comparison result.
The power battery power control system of claim 17, wherein the first adjusting module is further configured to perform the following operations:
acquiring a negative difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle;
integrating the negative difference value according to a preset integration duration and comparing an integration result with the power threshold;
wherein the preset integration time period depends on the battery capacity of the power battery.
The power battery power control system of claim 18, the power battery power control system of claim 16, wherein the first adjusting module is further configured to perform the following operations:
obtaining long-term correction power adjusted according to the last comparison result and obtaining first long-term correction power of the power battery according to the long-term correction power;
if the overrun power of the power battery is larger than or equal to the power threshold, acquiring the current long-term correction power of the power battery based on the sum of the first long-term correction power and a preset regulation power value;
if the overrun power of the power battery is smaller than the power threshold, acquiring the current long-term correction power of the power battery based on the difference between the first long-term correction power and the preset regulation power value;
wherein the preset regulation power value depends on the power threshold.
The power battery power control system of claim 19 and claim 12, wherein the second obtaining module is further configured to:
acquiring a power deviation value of the power battery according to the continuous discharge power and the battery temperature of the power battery;
acquiring a third discharge power value of the power battery according to the difference between the continuous discharge power and the power offset value;
and acquiring a second discharge power value of the power battery according to the sum of the third discharge power value and the adjustment result of the long-term correction power.
The power battery power control system of claim 20 and 12, wherein the second adjusting module is further configured to:
performing PI regulation on the discharge power according to the power deviation;
acquiring the adjusted discharge power according to the sum of the PI regulation result and the discharge power;
and controlling the discharge power of the power battery according to the adjusted discharge power.
Scheme 21, the power battery power control system according to scheme 20, wherein the second adjusting module further includes a PI regulation activation unit configured to perform the following operations:
determining whether the power deviation is less than 0,
if yes, executing the step of carrying out PI regulation on the discharge power according to the power deviation;
if not, not performing PI regulation.
The power battery power control system of claim 22, wherein the second adjusting module is further configured to perform the following operations:
obtaining proportional adjustment power according to the power deviation and a proportional adjustment coefficient corresponding to the power deviation;
acquiring integral adjusting power according to the power deviation and an integral adjusting coefficient corresponding to the power deviation;
and adding the proportional regulation power and the integral regulation power to obtain a PI regulation result.
Scheme 23, an on-board control system, characterized in that, the on-board control system includes the power battery power control system of any one of schemes 12 to 22.
Scheme 24, a vehicle, characterized in that, the vehicle includes the on-vehicle control system of scheme 23.
Scheme 25, a storage device in which a plurality of programs are stored, characterized in that said programs are adapted to be loaded by a processor to execute the power battery power control method according to any of the schemes 1 to 11.
Scheme 26, a control apparatus comprising a processor and a memory device; the storage device is suitable for storing a plurality of programs; characterized in that the program is adapted to be loaded by the processor to execute the power battery power control method according to any of the schemes 1 to 11.
Drawings
FIG. 1 is a schematic diagram illustrating the main steps of a power battery power control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the main steps of selectively adjusting the long-term correction power of the power battery according to the determination result according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the main steps of PI regulation of discharge power according to power deviation according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power battery power control system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1, fig. 1 schematically shows the main steps of the power battery power control method in the present embodiment. As shown in fig. 1, the power control method of the power battery in this embodiment mainly includes the following steps:
step S101: and acquiring a first discharge power value of the power battery according to the voltage and the discharge current of the power battery.
In the embodiment of the invention, the actual discharge power of the power battery is calculated according to the parameters of the voltage, the discharge current and the like of the power battery, the working state parameters of the voltage, the discharge current and the like of the power battery are protected to be normal, the battery state is protected in real time, the protection response is quicker, the adaptability is stronger, the time of the power battery in an extreme working state is reduced, the service life of the battery is protected, and the reliability of the whole vehicle power system of a vehicle in which the power battery is positioned is improved. Specifically, the step of "obtaining the first discharge power value of the power battery according to the voltage and the discharge current of the power battery" includes:
acquiring a discharge coefficient of the power battery according to the discharge current;
obtaining a discharge current offset value of the power battery according to the product of the discharge coefficient and a preset discharge current limit value, and selecting the smaller value of the discharge current offset value and a preset maximum discharge current offset value as a final discharge current offset value of the power battery;
acquiring a discharging current value of the power battery according to the difference between a preset discharging current limit value and a final discharging current offset value;
obtaining a first discharge power value according to the product of the discharge current value and the voltage of the power battery;
the discharge coefficient depends on the discharge current, and a corresponding relation exists between the discharge coefficient and the discharge current.
Step S102: and judging whether the power battery is in an over-discharge state or not and selectively adjusting the long-term correction power of the power battery according to the judgment result.
In practical application, the complexity of an actual driving condition often causes the actual power of the whole vehicle to exceed the discharge power of the power battery, and the power battery works under the condition, which causes the power of the power battery to be over-discharged for a long time and affects the service life of the power battery, so that whether the power battery is in an over-discharge state needs to be judged, and the long-term correction power of the power battery is selectively adjusted according to a judgment result. The long-term correction power is stored in a storage unit of the vehicle-mounted control system, the discharge power of the power battery can be adjusted, and the power value exceeding the capacity of the power battery can be adapted in a gradual change mode. The long-term correction power can improve the open-loop control characteristic of the vehicle-mounted control system on the power battery discharge power through closed-loop regulation, the closed-loop regulation time is shortened, and the long-term correction power is gradually obtained in the vehicle running process and is updated in real time according to the vehicle working condition.
Referring to fig. 2, fig. 2 illustrates the main steps of selectively adjusting the long-term correction power of the power battery according to the determination result in the present embodiment. Specifically, the step of "selectively adjusting the long-term correction power of the power battery according to the judgment result" mainly includes:
step S1021: judging whether the power battery is in an over-discharge state, if so, executing step S1022; if not, executing step S1025;
if the power battery is in an over-discharge state, the long-term correction power of the power battery needs to be adjusted, the extreme working state of the power battery is reduced, and the service life of the power battery is protected; if the power battery is not in the over-discharge state, the power battery works in a normal state, and the long-term correction power does not need to be adjusted.
Specifically, the step of determining whether the power battery is in an over-discharge state may include:
acquiring the continuous discharge power of the power battery within a preset time range, judging whether the continuous discharge power is greater than the power requirement value of the whole vehicle,
if so, judging that the power battery is in an over-discharge state;
if not, the power battery is judged not to be in the over-discharge state.
Step S1022: acquiring a negative difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle, and integrating the negative difference value according to a preset integration duration;
the integration time length depends on the battery capacity of the power battery, and the longer the battery capacity of the power battery is, the smaller the battery capacity is, and the shorter the integration time length is.
Step S1023: judging whether the integration result is greater than or equal to a preset power threshold value in the integration time, if so, executing a step S1024; if not, go to step S1022;
specifically, the integration duration is 500ms, the power threshold is 1kw, if the integration result is greater than or equal to 1kw within the integration time, it is indicated that the power battery is over-discharged seriously, and in order to ensure that the power battery can normally work and protect the service life of the power battery, a new long-term correction power may be calculated and the prestored first long-term correction power may be updated by using the new long-term correction power; if the integration time is up, or the integration result is greater than or equal to the preset power threshold value in the integration time, clearing the integrator and executing the step S1024, otherwise, executing the step S1022.
Step S1024: and calculating the current long-term correction power of the power battery and updating the first long-term correction power pre-stored in the vehicle-mounted control system.
The step of calculating the current long-term correction power of the power battery specifically comprises the following steps:
acquiring first long-term correction power prestored in a vehicle-mounted control system;
if the overrun power of the power battery is larger than or equal to the power threshold, acquiring the current long-term correction power of the power battery based on the sum of the first long-term correction power and a preset regulation power value;
if the overrun power of the power battery is smaller than the power threshold, acquiring the current long-term correction power of the power battery based on the difference between the first long-term correction power and the preset regulation power value;
wherein the preset regulation power value depends on the power threshold.
And replacing the acquired current long-term correction power of the power battery with the first long-term correction power pre-stored in the vehicle-mounted control system, so that the discharge power of the power battery can be recovered to the control capacity range of the vehicle-mounted control system as soon as possible. The long-term correction power is used for adjusting the discharge power of the power battery when the power battery is in an over-discharge state, and in the use process of the vehicle, if the power battery is not in the over-discharge state all the time, the long-term correction power value is 0, and when the power battery is in the over-discharge state for the first time, the difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle is used as the initial long-term correction power value.
Step S1025: the long term correction power is not adjusted.
Step S103: and acquiring a second discharge power value of the power battery according to the adjustment result of the long-term correction power, and selecting the smaller value of the first discharge power value and the second discharge power value as the discharge power of the power battery.
The step of "obtaining the second discharge power value of the power battery according to the adjustment result of the long-term correction power" includes:
acquiring a power deviation value of the power battery according to the continuous discharge power and the battery temperature of the power battery;
acquiring a third discharge power value of the power battery according to the difference between the continuous discharge power and the power offset value;
and acquiring a second discharge power value of the power battery according to the sum of the third discharge power value and the adjustment result of the long-term correction power.
The power offset value is determined according to the continuous discharge power of the power battery and the battery temperature, and the lower the continuous discharge power of the power battery is, the lower the offset value is, and the lower the temperature is, the lower the offset value is.
Step S104: and adjusting the discharge power according to the power deviation between the discharge power and the whole vehicle power demand value of the vehicle where the power battery is located, and controlling the discharge power of the power battery according to the adjusted discharge power.
And subtracting the whole vehicle power demand value of the vehicle where the power battery is positioned from the discharge power to obtain a power deviation, and performing PI (proportional integral) control when the power deviation is less than 0. The power of each part of the whole vehicle, such as the power of a motor and the like, can be reasonably distributed according to the adjusted discharge power of the power battery, so that the power over-discharge protection of the power battery can be effectively realized, and the service life of the power battery is prolonged.
The step of "adjusting the discharge power and controlling the discharge power of the power battery according to the adjusted discharge power" includes:
carrying out PI regulation on the discharge power according to the power deviation;
acquiring the adjusted discharge power according to the sum of the PI regulation result and the discharge power;
and controlling the discharge power of the power battery according to the adjusted discharge power.
Referring to fig. 3, fig. 3 exemplarily shows main steps of PI regulation of discharge power according to power deviation in the present embodiment. Specifically, the step of "PI-adjusting the discharge power according to the power deviation" includes:
obtaining proportional adjustment power according to the power deviation and a proportional adjustment coefficient corresponding to the power deviation;
acquiring integral adjusting power according to the power deviation and an integral adjusting coefficient corresponding to the power deviation;
and adding the proportional regulation power and the integral regulation power to obtain a PI regulation result.
The proportion adjustment coefficient depends on power deviation, the larger the power deviation is, the larger the proportion adjustment coefficient is, the proportion adjustment can accelerate battery discharge power adjustment, reduce errors and reduce power battery power over-discharge in advance. The integral regulating coefficient is related to the battery temperature, and the higher the battery temperature is, the smaller the integral regulating coefficient is, and the integral regulation can eliminate the steady-state error.
Based on the method embodiment, the invention also provides a power control system of the power battery. Referring to fig. 4, fig. 4 schematically shows the main structure of the power control system of the power battery in the present embodiment. The power battery power control system mainly comprises a first obtaining module 1, a first adjusting module 2, a second obtaining module 3 and a second adjusting module 4.
The first acquisition module 1 is configured to acquire a first discharge power value of the power battery according to the voltage and the discharge current of the power battery;
a first adjusting module 2 configured to determine whether the power battery is in an over-discharge state and selectively adjust the long-term correction power of the power battery according to the determination result;
the second obtaining module 3 is configured to obtain a second discharge power value of the power battery according to the adjustment result of the long-term correction power, and select the smaller value of the first discharge power value and the second discharge power value as the discharge power of the power battery;
and the second adjusting module 4 is configured to adjust the discharging power according to the power deviation between the discharging power and the whole vehicle power demand value of the vehicle where the power battery is located, and control the discharging power of the power battery according to the adjusted discharging power.
In a preferred implementation of the embodiment of the present invention, the first obtaining module 1 is further configured to perform the following operations:
acquiring a discharge coefficient of the power battery according to the discharge current;
obtaining a discharge current offset value of the power battery according to the product of the discharge coefficient and a preset discharge current limit value, and selecting the smaller value of the discharge current offset value and a preset maximum discharge current offset value as a final discharge current offset value of the power battery;
acquiring a discharging current value of the power battery according to the difference between a preset discharging current limit value and a final discharging current offset value;
and acquiring a first discharge power value according to the product of the discharge current value and the voltage of the power battery.
In a preferred implementation of the embodiment of the invention, the first adjusting module 2 is further configured to perform the following operations:
if the power battery is in an over-discharge state, adjusting the long-term correction power;
and if the power battery is not in an over-discharge state, not adjusting the long-term correction power.
In a preferred implementation of the embodiment of the invention, the first adjusting module 2 is further configured to perform the following operations:
acquiring the continuous discharge power of the power battery within a preset time range;
judging whether the continuous discharge power is larger than the power requirement value of the whole vehicle,
if so, judging that the power battery is in an over-discharge state;
if not, the power battery is judged not to be in the over-discharge state.
In a preferred implementation of the embodiment of the invention, the first adjusting module 2 is further configured to perform the following operations:
comparing the overrun power of the power battery with a preset power threshold value;
and adjusting the long-term correction power according to the comparison result.
In a preferred implementation of the embodiment of the invention, the first adjusting module 2 is further configured to perform the following operations:
acquiring a negative difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle;
integrating the negative difference value according to a preset integration duration and comparing an integration result with a power threshold;
wherein the preset integration time length depends on the battery capacity of the power battery.
In a preferred implementation of the embodiment of the invention, the first adjusting module 2 is further configured to perform the following operations:
acquiring first long-term correction power of the power battery according to the last comparison result;
if the overrun power of the power battery is larger than or equal to the power threshold, acquiring the current long-term correction power of the power battery based on the sum of the first long-term correction power and a preset regulation power value;
if the overrun power of the power battery is smaller than the power threshold, acquiring the current long-term correction power of the power battery based on the difference between the first long-term correction power and the preset regulation power value;
wherein the preset regulation power value depends on the power threshold.
In a preferred implementation of the embodiment of the present invention, the second obtaining module 3 is further configured to perform the following operations:
acquiring a power deviation value of the power battery according to the continuous discharge power and the battery temperature of the power battery;
acquiring a third discharge power value of the power battery according to the difference between the continuous discharge power and the power offset value;
and acquiring a second discharge power value of the power battery according to the sum of the third discharge power value and the adjustment result of the long-term correction power.
In a preferred implementation of the embodiment of the invention, the second adjusting module 4 is further configured to perform the following operations:
carrying out PI regulation on the discharge power according to the power deviation;
acquiring the adjusted discharge power according to the sum of the PI regulation result and the discharge power;
and controlling the discharge power of the power battery according to the adjusted discharge power.
In a preferred implementation of the embodiment of the present invention, the second adjusting module 4 further includes a PI regulation activation unit, and the PI regulation activation unit is configured to perform the following operations:
it is determined whether the power deviation is less than 0,
if yes, executing the step of carrying out PI regulation on the discharge power according to the power deviation;
if not, not performing PI regulation.
In a preferred implementation of the embodiment of the invention, the second adjusting module 4 is further configured to perform the following operations:
obtaining proportional adjustment power according to the power deviation and a proportional adjustment coefficient corresponding to the power deviation;
acquiring integral adjusting power according to the power deviation and an integral adjusting coefficient corresponding to the power deviation;
and adding the proportional regulation power and the integral regulation power to obtain a PI regulation result.
Based on the above power battery power control system embodiment, the invention also provides a vehicle-mounted control system, which may include the power battery power control system described in the above power battery power control system embodiment.
In the present embodiment, the vehicle-mounted control system may be a control system capable of implementing a specific function, and in some cases, may directly refer to a controller of the control system. It should be noted that the scope of the present invention is not limited to this specific embodiment. Without departing from the principle of the present invention, it should be clear to those skilled in the art that the vehicle-mounted control system may be a vehicle-mounted entertainment display system, a vehicle-mounted central control system, a vehicle-mounted computer system, etc., and such modifications or substitutions will fall within the scope of the present invention.
Further, based on the above embodiment of the vehicle-mounted control system, the invention further provides a vehicle, which may include the vehicle-mounted control system described in the above embodiment of the vehicle-mounted control system.
Still further, based on the above method embodiments, the present invention also provides a storage device, in which a plurality of programs are stored, and the programs may be adapted to be loaded by a processor to execute the methods described in the above method embodiments.
Still further, based on the above method embodiment, the present invention further provides a control apparatus, which may include a processor, a storage device; the storage device may be adapted to store a plurality of programs which may be adapted to be loaded by the processor to perform the methods described in the above-mentioned method embodiments.
It is clear to those skilled in the art that, for convenience and brevity of description, specific working processes and related descriptions of the apparatus, the system, and the vehicle embodiment of the present invention may refer to corresponding processes in the foregoing method embodiments, and have the same beneficial effects as the foregoing method, and will not be described herein again.
Those of skill in the art will appreciate that the method steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of electronic hardware and software. Whether such functionality is implemented as electronic hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing or implying any particular order or sequence. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (26)
1. A power battery power control method is characterized by comprising the following steps:
acquiring a first discharge power value of the power battery according to the voltage and the discharge current of the power battery;
judging whether the power battery is in an over-discharge state or not and selectively adjusting the long-term correction power of the power battery according to the judgment result;
acquiring a second discharge power value of the power battery according to the adjustment result of the long-term correction power, and selecting the smaller value of the first discharge power value and the second discharge power value as the discharge power of the power battery;
and adjusting the discharge power according to the power deviation between the discharge power and the finished vehicle power demand value of the vehicle where the power battery is located, and controlling the discharge power of the power battery according to the adjusted discharge power.
2. The power battery power control method according to claim 1, wherein the step of obtaining the first discharge power value of the power battery according to the voltage and the discharge current of the power battery specifically comprises:
acquiring a discharge coefficient of the power battery according to the discharge current;
obtaining a discharge current offset value of the power battery according to the product of the discharge coefficient and a preset discharge current limit value, and selecting the smaller value of the discharge current offset value and a preset maximum discharge current offset value as a final discharge current offset value of the power battery;
acquiring a discharging current value of the power battery according to the difference between the preset discharging current limit value and the final discharging current offset value;
and acquiring the first discharge power value according to the product of the discharge current value and the voltage of the power battery.
3. The power battery power control method according to claim 1, wherein the step of selectively adjusting the long-term correction power of the power battery according to the determination result specifically includes:
if the power battery is in an over-discharge state, adjusting the long-term correction power;
and if the power battery is not in an over-discharge state, not adjusting the long-term correction power.
4. The power battery power control method according to claim 3, further comprising determining whether the power battery is in an over-discharged state, and specifically including the steps of:
acquiring the continuous discharge power of the power battery within a preset time range;
judging whether the continuous discharging power is larger than the whole vehicle power demand value or not,
if so, determining that the power battery is in an over-discharge state;
if not, determining that the power battery is not in an over-discharge state.
5. The power battery power control method according to claim 3, wherein the step of adjusting the long-term correction power specifically comprises:
comparing the overrun power of the power battery with a preset power threshold value;
and adjusting the long-term correction power according to the comparison result.
6. The power battery power control method according to claim 5, wherein the step of comparing the overrun power of the power battery with a preset power threshold specifically comprises:
acquiring a negative difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle;
integrating the negative difference value according to a preset integration duration and comparing an integration result with the power threshold;
wherein the preset integration time period depends on the battery capacity of the power battery.
7. The power battery power control method according to claim 5, wherein the step of adjusting the long-term correction power according to the comparison result specifically includes:
obtaining long-term correction power adjusted according to the last comparison result and obtaining first long-term correction power of the power battery according to the long-term correction power;
if the overrun power of the power battery is larger than or equal to the power threshold, acquiring the current long-term correction power of the power battery based on the sum of the first long-term correction power and a preset regulation power value;
if the overrun power of the power battery is smaller than the power threshold, acquiring the current long-term correction power of the power battery based on the difference between the first long-term correction power and the preset regulation power value;
wherein the preset regulation power value depends on the power threshold.
8. The power battery power control method according to claim 1, wherein the step of obtaining the second discharge power value of the power battery according to the adjustment result of the long-term correction power includes:
acquiring a power deviation value of the power battery according to the continuous discharge power and the battery temperature of the power battery;
acquiring a third discharge power value of the power battery according to the difference between the continuous discharge power and the power offset value;
and acquiring a second discharge power value of the power battery according to the sum of the third discharge power value and the adjustment result of the long-term correction power.
9. The power battery power control method according to claim 1, wherein the step of "adjusting the discharge power and controlling the discharge power of the power battery according to the adjusted discharge power" specifically includes:
performing PI regulation on the discharge power according to the power deviation;
acquiring the adjusted discharge power according to the sum of the PI regulation result and the discharge power;
and controlling the discharge power of the power battery according to the adjusted discharge power.
10. The power battery power control method according to claim 9, wherein before the step of "PI-regulating the discharge power according to the power deviation", the method further comprises:
determining whether the power deviation is less than 0,
if yes, executing the step of carrying out PI regulation on the discharge power according to the power deviation;
if not, not performing PI regulation.
11. The power battery power control method according to claim 9, wherein the step of performing PI regulation on the discharge power according to the power deviation specifically includes:
obtaining proportional adjustment power according to the power deviation and a proportional adjustment coefficient corresponding to the power deviation;
acquiring integral adjusting power according to the power deviation and an integral adjusting coefficient corresponding to the power deviation;
and adding the proportional regulation power and the integral regulation power to obtain a PI regulation result.
12. A power cell power control system, comprising:
the first acquisition module is configured to acquire a first discharge power value of the power battery according to the voltage and the discharge current of the power battery;
the first adjusting module is configured to judge whether the power battery is in an over-discharge state or not and selectively adjust the long-term correction power of the power battery according to the judgment result;
the second obtaining module is configured to obtain a second discharge power value of the power battery according to the adjustment result of the long-term correction power, and select the smaller value of the first discharge power value and the second discharge power value as the discharge power of the power battery;
and the second adjusting module is configured to adjust the discharging power according to the power deviation between the discharging power and the finished vehicle power demand value of the vehicle where the power battery is located, and control the discharging power of the power battery according to the adjusted discharging power.
13. The power battery power control system of claim 12, wherein the first obtaining module is further configured to:
acquiring a discharge coefficient of the power battery according to the discharge current;
obtaining a discharge current offset value of the power battery according to the product of the discharge coefficient and a preset discharge current limit value, and selecting the smaller value of the discharge current offset value and a preset maximum discharge current offset value as a final discharge current offset value of the power battery;
acquiring a discharging current value of the power battery according to the difference between the preset discharging current limit value and the final discharging current offset value;
and acquiring the first discharge power value according to the product of the discharge current value and the voltage of the power battery.
14. The power cell power control system of claim 12, wherein the first adjustment module is further configured to:
if the power battery is in an over-discharge state, adjusting the long-term correction power;
and if the power battery is not in an over-discharge state, not adjusting the long-term correction power.
15. The power cell power control system of claim 14, wherein the first adjustment module is further configured to:
acquiring the continuous discharge power of the power battery within a preset time range;
judging whether the continuous discharging power is larger than the whole vehicle power demand value or not,
if so, determining that the power battery is in an over-discharge state;
if not, determining that the power battery is not in an over-discharge state.
16. The power cell power control system of claim 14, wherein the first adjustment module is further configured to:
comparing the overrun power of the power battery with a preset power threshold value;
and adjusting the long-term correction power according to the comparison result.
17. The power cell power control system of claim 16, wherein the first adjustment module is further configured to:
acquiring a negative difference value between the continuous discharge power of the power battery and the power demand value of the whole vehicle;
integrating the negative difference value according to a preset integration duration and comparing an integration result with the power threshold;
wherein the preset integration time period depends on the battery capacity of the power battery.
18. The power cell power control system of claim 16, wherein the first adjustment module is further configured to:
obtaining long-term correction power adjusted according to the last comparison result and obtaining first long-term correction power of the power battery according to the long-term correction power;
if the overrun power of the power battery is larger than or equal to the power threshold, acquiring the current long-term correction power of the power battery based on the sum of the first long-term correction power and a preset regulation power value;
if the overrun power of the power battery is smaller than the power threshold, acquiring the current long-term correction power of the power battery based on the difference between the first long-term correction power and the preset regulation power value;
wherein the preset regulation power value depends on the power threshold.
19. The power battery power control system of claim 12, wherein the second obtaining module is further configured to:
acquiring a power deviation value of the power battery according to the continuous discharge power and the battery temperature of the power battery;
acquiring a third discharge power value of the power battery according to the difference between the continuous discharge power and the power offset value;
and acquiring a second discharge power value of the power battery according to the sum of the third discharge power value and the adjustment result of the long-term correction power.
20. The power cell power control system of claim 12, wherein the second adjustment module is further configured to:
performing PI regulation on the discharge power according to the power deviation;
acquiring the adjusted discharge power according to the sum of the PI regulation result and the discharge power;
and controlling the discharge power of the power battery according to the adjusted discharge power.
21. The power battery power control system of claim 20, wherein the second adjustment module further comprises a PI regulation activation unit configured to:
determining whether the power deviation is less than 0,
if yes, executing the step of carrying out PI regulation on the discharge power according to the power deviation;
if not, not performing PI regulation.
22. The power cell power control system of claim 20, wherein the second adjustment module is further configured to:
obtaining proportional adjustment power according to the power deviation and a proportional adjustment coefficient corresponding to the power deviation;
acquiring integral adjusting power according to the power deviation and an integral adjusting coefficient corresponding to the power deviation;
and adding the proportional regulation power and the integral regulation power to obtain a PI regulation result.
23. An on-board control system, characterized in that it comprises a power battery power control system according to any one of claims 12 to 22.
24. A vehicle characterized in that it comprises an on-board control system according to claim 23.
25. A storage device having stored therein a plurality of programs, wherein the programs are adapted to be loaded by a processor to perform the power cell power control method according to any one of claims 1 to 11.
26. A control apparatus comprising a processor and a storage device; the storage device is suitable for storing a plurality of programs; characterised in that the program is adapted to be loaded by the processor to perform the power cell power control method according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099110.0A CN109823229B (en) | 2019-01-31 | 2019-01-31 | Power control method, device and system for power battery and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099110.0A CN109823229B (en) | 2019-01-31 | 2019-01-31 | Power control method, device and system for power battery and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109823229A CN109823229A (en) | 2019-05-31 |
| CN109823229B true CN109823229B (en) | 2021-07-23 |
Family
ID=66863295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910099110.0A Active CN109823229B (en) | 2019-01-31 | 2019-01-31 | Power control method, device and system for power battery and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109823229B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244228B (en) * | 2019-07-17 | 2022-04-15 | 东软睿驰汽车技术（沈阳）有限公司 | Battery control method and device |
| CN110736929B (en) * | 2019-11-06 | 2022-07-26 | 新石器慧通（北京）科技有限公司 | Battery capacity calculation method and device |
| CN110931904B (en) * | 2019-11-28 | 2021-06-25 | 湖南海博瑞德电智控制技术有限公司 | Lithium battery charging and discharging control method |
| CN111024410B (en) * | 2019-12-30 | 2021-08-03 | 华人运通(江苏)技术有限公司 | Power overrun fault detection method and device for vehicle, vehicle and storage medium |
| CN111731152B (en) * | 2020-06-28 | 2021-10-29 | 中国第一汽车股份有限公司 | Power control method, device, vehicle and storage medium |
| CN113022311B (en) * | 2021-02-26 | 2022-03-25 | 三一汽车制造有限公司 | Power control method, power control device and vehicle |
| CN113276726B (en) * | 2021-05-18 | 2022-09-02 | 江铃汽车股份有限公司 | Electric truck energy management method and system |
| CN113442792B (en) * | 2021-08-04 | 2022-07-26 | 上海洛轲智能科技有限公司 | Control method, device, electronic equipment and medium for preventing battery power from exceeding limit |
| CN113829949B (en) * | 2021-09-17 | 2023-07-25 | 中国第一汽车股份有限公司 | Power battery power correction method |
| CN113572243B (en) * | 2021-09-26 | 2022-02-18 | 蜂巢能源科技有限公司 | Battery power control method, control device and battery system |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6868318B1 (en) * | 2003-10-14 | 2005-03-15 | General Motors Corporation | Method for adjusting battery power limits in a hybrid electric vehicle to provide consistent launch characteristics |
| JP2006310217A (en) * | 2005-05-02 | 2006-11-09 | Toyota Motor Corp | Fuel cell system |
| CN101496253A (en) * | 2006-07-31 | 2009-07-29 | 丰田自动车株式会社 | Power source system and vehicle having the system, method for conrolling temperature rise of electricity accumulation device, and computer-readable recording medium including recorded program for caus |
| CN201290013Y (en) * | 2008-10-28 | 2009-08-12 | 无锡斯达四方电气有限公司 | Device for monitoring accumulator discharging current |
| CN102403767A (en) * | 2011-11-22 | 2012-04-04 | 奇瑞汽车股份有限公司 | Battery discharge control method and device |
| CN104442436A (en) * | 2014-10-09 | 2015-03-25 | 惠州市亿能电子有限公司 | Battery pack power control method suitable for railway passenger car |
| CN105676132A (en) * | 2014-11-07 | 2016-06-15 | 沃尔沃汽车公司 | Power and current estimation for batteries |
| CN105667497A (en) * | 2014-11-19 | 2016-06-15 | 上海汽车集团股份有限公司 | Method and device for controlling power of electric drive system |
| CN106347132A (en) * | 2016-09-05 | 2017-01-25 | 北京新能源汽车股份有限公司 | Electric automobile and range extender start-stop control method and device thereof |
| CN106990805A (en) * | 2017-02-20 | 2017-07-28 | 上海蔚来汽车有限公司 | Dynamic current control method and system |
| CN107054107A (en) * | 2015-10-07 | 2017-08-18 | 三菱自动车工业株式会社 | Battery controller |
| CN107139740A (en) * | 2017-04-12 | 2017-09-08 | 奇瑞汽车股份有限公司 | Power regulating method and device |
| CN107985090A (en) * | 2017-11-02 | 2018-05-04 | 国机智骏（北京）汽车科技有限公司 | Charging method, device, battery management system and the electric automobile of power battery |
| CN108312871A (en) * | 2018-02-02 | 2018-07-24 | 西安特锐德智能充电科技有限公司 | A kind of control power module group current output method and system |
| JP2018129936A (en) * | 2017-02-08 | 2018-08-16 | トヨタ自動車株式会社 | Power supply system |
| CN108839586A (en) * | 2018-09-19 | 2018-11-20 | 安徽江淮汽车集团股份有限公司 | For the battery control method and system of voltage difference failure |
| CN109143076A (en) * | 2018-08-01 | 2019-01-04 | 安徽锐能科技有限公司 | The method of discharge power for regulating cell group |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667739B (en) * | 2008-09-05 | 2013-04-24 | 深圳富泰宏精密工业有限公司 | Power supply device and discharging method thereof |
| EP3074267B1 (en) * | 2013-11-29 | 2021-01-27 | Omicron electronics GmbH | Method and apparatus for monitoring a traction battery of an electric vehicle |
| CN107768742A (en) * | 2016-08-15 | 2018-03-06 | 光宝电子(广州)有限公司 | The managing device and management method of the power output of battery |
| US10343552B2 (en) * | 2017-02-08 | 2019-07-09 | Samsung Electronics Co., Ltd. | Heterogeneous electrical energy storage system |
-
2019
- 2019-01-31 CN CN201910099110.0A patent/CN109823229B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6868318B1 (en) * | 2003-10-14 | 2005-03-15 | General Motors Corporation | Method for adjusting battery power limits in a hybrid electric vehicle to provide consistent launch characteristics |
| JP2006310217A (en) * | 2005-05-02 | 2006-11-09 | Toyota Motor Corp | Fuel cell system |
| CN101496253A (en) * | 2006-07-31 | 2009-07-29 | 丰田自动车株式会社 | Power source system and vehicle having the system, method for conrolling temperature rise of electricity accumulation device, and computer-readable recording medium including recorded program for caus |
| CN201290013Y (en) * | 2008-10-28 | 2009-08-12 | 无锡斯达四方电气有限公司 | Device for monitoring accumulator discharging current |
| CN102403767A (en) * | 2011-11-22 | 2012-04-04 | 奇瑞汽车股份有限公司 | Battery discharge control method and device |
| CN104442436A (en) * | 2014-10-09 | 2015-03-25 | 惠州市亿能电子有限公司 | Battery pack power control method suitable for railway passenger car |
| CN105676132A (en) * | 2014-11-07 | 2016-06-15 | 沃尔沃汽车公司 | Power and current estimation for batteries |
| CN105667497A (en) * | 2014-11-19 | 2016-06-15 | 上海汽车集团股份有限公司 | Method and device for controlling power of electric drive system |
| CN107054107A (en) * | 2015-10-07 | 2017-08-18 | 三菱自动车工业株式会社 | Battery controller |
| CN106347132A (en) * | 2016-09-05 | 2017-01-25 | 北京新能源汽车股份有限公司 | Electric automobile and range extender start-stop control method and device thereof |
| JP2018129936A (en) * | 2017-02-08 | 2018-08-16 | トヨタ自動車株式会社 | Power supply system |
| CN106990805A (en) * | 2017-02-20 | 2017-07-28 | 上海蔚来汽车有限公司 | Dynamic current control method and system |
| CN107139740A (en) * | 2017-04-12 | 2017-09-08 | 奇瑞汽车股份有限公司 | Power regulating method and device |
| CN107985090A (en) * | 2017-11-02 | 2018-05-04 | 国机智骏（北京）汽车科技有限公司 | Charging method, device, battery management system and the electric automobile of power battery |
| CN108312871A (en) * | 2018-02-02 | 2018-07-24 | 西安特锐德智能充电科技有限公司 | A kind of control power module group current output method and system |
| CN109143076A (en) * | 2018-08-01 | 2019-01-04 | 安徽锐能科技有限公司 | The method of discharge power for regulating cell group |
| CN108839586A (en) * | 2018-09-19 | 2018-11-20 | 安徽江淮汽车集团股份有限公司 | For the battery control method and system of voltage difference failure |
Non-Patent Citations (2)
| Title |
|---|
| 电力机车动力锂电池控制保护策略探讨;王建荣、高殿柱、马晓宁;《电力机车与城轨车辆》;20130920;第36卷(第5期);第1-4页 * |
| 电动汽车电池功率输入等效电路模型的比较研究;林成涛、仇斌、陈全世;《汽车工程》;20060430;第28卷(第3期);第1-6页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109823229A (en) | 2019-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109823229B (en) | Power control method, device and system for power battery and vehicle | |
| US9252464B2 (en) | Method for balancing states of charge of a battery having a plurality of battery cells as well as a corresponding battery management system and a battery | |
| CN109878375B (en) | Vehicle power distribution method, device and system, vehicle and vehicle-mounted controller | |
| US10074876B2 (en) | Method for balancing out states of charge of a battery having a plurality of battery cells, and a corresponding battery management system and battery | |
| EP2187499B1 (en) | Battery controller of vehicle | |
| US8294416B2 (en) | Method and device for controlling the operating point of a battery | |
| JP5386872B2 (en) | Battery monitoring and control device | |
| EP3323184B1 (en) | A method and system for balancing a battery pack | |
| US20100066379A1 (en) | Abnormality detecting device for storage element, abnormality detecting method for storage element, abnormality detecting program for storage element, and computer-readable recording medium storing abnormality detecting program | |
| EP2100765B1 (en) | Battery management control system | |
| EP1897201A1 (en) | Method and apparatus of controlling for charging/discharging voltage of battery | |
| CN105429238B (en) | Flexible charging system and charging method for hybrid electric vehicle | |
| US20120139476A1 (en) | Method and Apparatus for Charging a Battery | |
| KR101866020B1 (en) | Method for controlling start of fuel cell vehicle | |
| JP6547764B2 (en) | Fuel cell system for vehicle and control method thereof | |
| CN104347897A (en) | Methods and systems for adjusting battery voltage limits | |
| CN113937863B (en) | Battery equalization strategy for hybrid system and hybrid vehicle | |
| CN112498173A (en) | Hybrid battery pack control | |
| CN111301219A (en) | Electric vehicle battery control method, system, device and readable storage medium | |
| US20130176001A1 (en) | Method for charging a battery of a motor vehicle | |
| US10523020B2 (en) | Electric storage apparatus and electric-storage controlling method | |
| US10843647B2 (en) | Method for determining a cell current limit of a traction battery and an onboard network in a motor vehicle | |
| KR102044484B1 (en) | Auxiliary battery control system for vehicle black box | |
| US20230411708A1 (en) | Battery device | |
| US10424944B2 (en) | Dynamic regulation of an electric output |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |