CN117227576B - Battery power control method, storage medium, and electronic device - Google Patents

Battery power control method, storage medium, and electronic device Download PDF

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CN117227576B
CN117227576B CN202311515075.9A CN202311515075A CN117227576B CN 117227576 B CN117227576 B CN 117227576B CN 202311515075 A CN202311515075 A CN 202311515075A CN 117227576 B CN117227576 B CN 117227576B
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current
discharge
power
map table
charge
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CN117227576A (en
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张�雄
王清泉
曾梓华
郭浩
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GAC Aion New Energy Automobile Co Ltd
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GAC Aion New Energy Automobile Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

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Abstract

The application discloses a battery power control method, a storage medium and an electronic device, wherein the method comprises the following steps: acquiring a current charge-discharge power MAP table; determining the current available maximum power and the current allowable discharge time according to the current charge-discharge power MAP table; calculating a current accumulated discharge parameter, wherein the current accumulated discharge parameter is the integral of actual output power to time in a preset time period before the current moment, and the preset time period is longer than the current allowable discharge time; and switching the current charge-discharge power MAP table according to the current accumulated discharge parameter, the current available maximum power and the current allowable discharge time. According to the method and the device, the current accumulated discharge parameter is calculated according to the integral of the actual output power in the preset time period before the current moment and the current maximum available power and the current allowable discharge time are combined to control the switching of the current charge and discharge power MAP table, and the current charge and discharge power MAP table can be switched according to whether the accumulated discharge parameter in the preset time period exceeds the current maximum allowable discharge capacity.

Description

Battery power control method, storage medium, and electronic device
Technical Field
The present disclosure relates to the field of battery technologies, and in particular, to a battery power control method, a storage medium, and an electronic device.
Background
The source of available power for an electric vehicle comes from the vehicle's power battery pack. The sustainable charge-discharge power parameter of the whole power battery pack is obtained by calculating the standard sustainable charge-discharge power parameter of the battery cell unit through the actual whole pack serial-parallel number. The sustainable charge-discharge power parameters of the whole package are controlled according to a plurality of charge-discharge power MAP tables, and each charge-discharge power MAP table corresponds to available power with different durations (such as a 2s charge-discharge power MAP table, a 5s charge-discharge power MAP table, a 10s charge-discharge power MAP table … …, etc.). Fig. 1 shows a 2s charge-discharge power MAP table of a power battery pack showing the corresponding sustainable discharge power at different battery temperatures and SOCs (remaining amounts of electric power), for example, 30% SOC, at 10 c, with 100kw for 2s sustainable discharge power.
Because the charge-discharge power MAP table is obtained by performing multiple actual measurements on the battery, the charge-discharge power MAP table is generally discrete and discontinuous in real vehicle application, and therefore, how to switch between the charge-discharge power MAP tables becomes a key point of power control of the power battery pack.
Disclosure of Invention
The application aims to overcome the defect of difficulty in switching among a plurality of charge-discharge power MAP tables in the prior art and provide a battery power control method, a storage medium and electronic equipment for realizing switching among the plurality of charge-discharge power MAP tables.
The technical scheme of the application provides a battery power control method, which comprises the following steps:
acquiring a current charge-discharge power MAP table;
determining the current available maximum power and the current allowable discharge time according to the current charge-discharge power MAP table;
calculating a current accumulated discharge parameter, wherein the current accumulated discharge parameter is the integral of actual output power to time in a preset time period before the current moment, and the preset time period is larger than the current allowable discharge time;
and switching a current charging and discharging power MAP table according to the current accumulated discharging parameter, the current available maximum power and the current allowable discharging time.
Further, the method further comprises:
in response to vehicle start, battery output power is controlled according to an initial charge-discharge power MAP table, which is a charge-discharge power MAP table that allows discharge for 10 s.
Further, according to the current accumulated discharge parameter, the current available maximum power and the current allowable discharge time, a current charge-discharge power MAP table is switched, which specifically includes:
calculating a current allowable discharge parameter, wherein the current allowable discharge parameter is the product of the current available maximum power and the current allowable discharge time;
calculating a current discharge ratio, wherein the current discharge ratio is the current accumulated discharge parameter divided by the current allowable discharge parameter;
and switching the current charge-discharge power MAP table according to the current discharge ratio.
Further, the switching the current charge-discharge power MAP table according to the current discharge ratio specifically includes:
and if the current discharge ratio is greater than or equal to the upper limit of the current ratio, switching a charge-discharge power MAP table with the allowable discharge time greater than the current allowable discharge time as a current charge-discharge power MAP table.
Further, the switching the current charge-discharge power MAP table according to the current discharge ratio specifically includes:
and if the current discharge ratio is smaller than or equal to the lower limit of the current ratio, switching a charge-discharge power MAP table with the allowable discharge time smaller than the current allowable discharge time to serve as the current charge-discharge power MAP table.
Further, before the current charge-discharge power MAP table is switched according to the current discharge ratio, the method further includes:
and determining the upper limit of the current ratio and/or the lower limit of the current ratio according to the current charge-discharge power MAP table.
Further, after the current charge-discharge power MAP table is switched according to the current discharge ratio, the method further includes:
acquiring vehicle running parameters and current output power;
determining target output power according to a current charge-discharge power MAP table and the vehicle running parameters;
the battery output power is controlled to switch from the current output power to the target output power at a target switching rate.
Further, before the controlling the battery output power to switch from the current output power to the target output power at the target switching rate, the method further includes:
and determining a target switching rate, wherein the target switching rate is a quotient of a power difference value divided by a preset switching duration, and the power difference value is an absolute value of a difference value between the target output power and the current output power.
The technical scheme of the application also provides a storage medium, wherein the storage medium stores computer instructions, and when the computer executes the computer instructions, the storage medium is used for executing the battery power control method.
The technical scheme of the application also provides electronic equipment, which comprises at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the battery power control method as previously described.
After the technical scheme is adopted, the method has the following beneficial effects:
according to the method and the device, the current accumulated discharge parameter is calculated according to the integral of the actual output power in the preset time period before the current time, the switching of the current charge-discharge power MAP table is controlled by combining the current available maximum power and the current allowable discharge time, and the current charge-discharge power MAP table can be switched according to whether the accumulated discharge parameter in the preset time period exceeds the current maximum allowable discharge capacity.
Drawings
The disclosure of the present application will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:
fig. 1 is an example of a power battery pack charge-discharge power MAP table;
FIG. 2 is a flow chart of a method of battery power control in an embodiment of the present application;
FIG. 3 is a flow chart of a method of battery power control in a preferred embodiment of the present application;
fig. 4 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.
Detailed Description
Specific embodiments of the present application are further described below with reference to the accompanying drawings.
It is easy to understand that, according to the technical solution of the present application, those skilled in the art may replace various structural manners and implementation manners without changing the true spirit of the present application. Accordingly, the following detailed description and drawings are merely illustrative of the present application and are not intended to be exhaustive or to be limiting of the application.
Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The above-described specific meanings belonging to the present application are understood as appropriate by those of ordinary skill in the art.
The battery power control method comprises the following steps:
the battery power control method in the embodiment of the application, as shown in fig. 2, includes:
step S201: acquiring a current charge-discharge power MAP table;
step S202: determining the current available maximum power and the current allowable discharge time according to the current charge-discharge power MAP table;
step S203: calculating a current accumulated discharge parameter, wherein the current accumulated discharge parameter is the integral of actual output power to time in a preset time period before the current moment, and the preset time period is longer than the current allowable discharge time;
step S204: and switching the current charge-discharge power MAP table according to the current accumulated discharge parameter, the current available maximum power and the current allowable discharge time.
Specifically, with respect to step S201, during the running of the vehicle, the current charge-discharge power MAP table is acquired every set time (for example, the set time may be set to 0.5S-2S), thereby realizing the monitoring of the current charge-discharge power MAP table.
Step S202, determining the current allowable discharge time corresponding to the current charge-discharge power MAP table, wherein each charge-discharge power MAP table has the corresponding allowable discharge time; simultaneously acquiring the current battery pack temperature and the current battery pack electric quantity, and determining the current available maximum power by inquiring a current charge-discharge power MAP table; i.e., based on the current charge-discharge power MAP table, the battery pack is allowed to continue discharging at the current maximum power available for the current allowable discharge time.
Step S203 then obtains the actual output power of the battery in the preset time period before the current time, and calculates the integral of the actual output power over time in the preset time period as the current accumulated discharge parameter, and if the preset time period is 20S, the power battery pack outputs 10S with 50kw of power, outputs 12S with 30kw of power, and outputs 2S with 20kw of power before the current time, as an example. The current accumulated discharge parameter α is the integral of the actual output power with respect to time in the last 20s of the current time, specifically α=20x2+30x12+50 (20-12-2). The current accumulated discharge parameter represents the actual discharge capacity of the battery within a preset time period before the current moment.
It should be noted that, since the actual output power of the battery pack will not generally exceed the current available maximum power, the preset time period should be greater than the current allowable discharge time, and preferably, the preset time period is set to at least twice the current allowable discharge time.
Finally, step S204 combines the current available maximum power and the current allowable discharge time to control the switching of the current charging and discharging power MAP table. The current available maximum power and the current allowable discharge time can represent the current maximum allowable discharge capacity, the current accumulated discharge parameter represents the actual discharge capacity of the battery in a preset time period before the current moment, the switching of the current charge and discharge power MAP table can be controlled according to whether the accumulated discharge parameter in the preset time period exceeds the maximum allowable discharge capacity, and the battery pack can be prevented from running for too long time beyond the current maximum discharge capacity, so that the safety of the battery pack is protected, and the service life is prolonged.
In one embodiment, the method further comprises:
in response to vehicle start, battery output power is controlled according to an initial charge-discharge power MAP table, which is a charge-discharge power MAP table that allows discharge for 10 s.
Specifically, by examining the actual power requirements for running a large number of actual vehicles and the hundred kilometer acceleration time requirements for a large number of automobiles, it was determined that the output power provided by the 10s charge-discharge power MAP table can completely meet the acceleration requirements when the vehicle starts.
In the embodiment of the application, a 10s charge-discharge power MAP table is set as an initial charge-discharge power MAP table, when a vehicle is started, the battery output power is controlled by the initial charge-discharge power MAP table, and then the charge-discharge power MAP table is switched according to the battery power control method in the application.
In one embodiment, the present charge-discharge power MAP table is switched according to the present accumulated discharge parameter, the present available maximum power and the present allowable discharge time, and specifically includes:
calculating a current allowable discharge parameter, wherein the current allowable discharge parameter is the product of the current available maximum power and the current allowable discharge time;
calculating a current discharge ratio, wherein the current discharge ratio is a current accumulated discharge parameter divided by a current allowable discharge parameter;
and switching the current charge-discharge power MAP table according to the current discharge ratio.
In the embodiment of the application, the current available maximum power and the current allowable discharge time are multiplied to obtain the current allowable discharge parameter, which is used for reflecting the current maximum discharge capacity of the battery pack. And dividing the current accumulated discharge parameter by the current allowable discharge parameter to obtain a current discharge ratio for reflecting the proportional relation between the current actual discharge capacity and the maximum allowable discharge capacity, judging whether the current actual discharge capacity exceeds the maximum allowable discharge capacity according to the current discharge ratio, and controlling whether and how to switch the current charge and discharge power MAP table according to the current discharge ratio.
In one embodiment, the current charge-discharge power MAP table is switched according to the current discharge ratio, which specifically includes:
and if the current discharge ratio is greater than or equal to the upper limit of the current ratio, switching a charge-discharge power MAP table with the allowable discharge time greater than the current allowable discharge time as the current charge-discharge power MAP table.
In the embodiment of the application, the upper limit of the current ratio can be a preset fixed value, and can be dynamically determined according to the current charge-discharge power MAP table; it should be noted that the upper limit of the current ratio is necessarily greater than 1. As an example, the upper limit of the present ratio may be set to 1.5, and when the present discharge ratio is equal to or greater than 1.5, the present actual discharge capacity may be considered to exceed 0.5 times the maximum allowable discharge capacity.
When the current discharge ratio is greater than or equal to the upper limit of the current ratio, the current actual discharge capacity is considered to exceed the maximum allowable discharge capacity, at the moment, a charge-discharge power MAP table with the allowable discharge time greater than the current allowable discharge time is switched to serve as the current charge-discharge power MAP table, and the longer the allowable discharge time is, the smaller the corresponding sustainable discharge power is, so that the actual discharge capacity of the battery can be reduced, and the effect of protecting the battery is achieved.
Specifically, a plurality of charge-discharge power MAP tables are recorded in the whole vehicle, each charge-discharge power MAP table corresponds to different allowable discharge time, and after the current discharge ratio is judged to be greater than or equal to the upper limit of the current ratio, the charge-discharge power MAP table with the allowable discharge time greater than the current allowable discharge time and the allowable discharge time closest to the current allowable discharge time is selected as the current charge-discharge power MAP table, so that the phenomenon that the battery power drops too much in a short time and the driving experience of a user is influenced is avoided.
It should be noted that, based on the actual use, when the discharge time is allowed to reach 60s, the boundary effect is remarkable. Therefore, the allowable discharge time of the charge-discharge power MAP table is not allowed to increase infinitely, and an allowable discharge time upper limit threshold may be set, and after the allowable discharge time of the charge-discharge power MAP increases to the allowable discharge time upper limit threshold, the allowable discharge time is not allowed to continue to increase.
In one embodiment, the current charge-discharge power MAP table is switched according to the current discharge ratio, which specifically includes:
and if the current discharge ratio is smaller than or equal to the lower limit of the current ratio, switching a charge-discharge power MAP table with the allowable discharge time smaller than the current allowable discharge time as the current charge-discharge power MAP table.
In the embodiment of the application, the lower limit of the current ratio may be a preset fixed value, or may be dynamically determined according to a current charging and discharging power MAP table; it should be noted that the lower limit of the current ratio is necessarily 1 or less. As an example, the upper limit of the present ratio may be set to 0.5, and when the present discharge ratio is equal to or less than 0.5, the present actual discharge capacity may be considered to be only half of the maximum allowable discharge capacity.
When the current discharge ratio is smaller than or equal to the lower limit of the current ratio, the discharge capacity of the battery is not fully utilized, the utilization efficiency of the electric energy is low, at the moment, a charge-discharge power MAP table with the allowable discharge time smaller than the current allowable discharge time is switched to serve as the current charge-discharge power MAP table, the shorter the allowable discharge time is, the larger the corresponding sustainable discharge power is, and therefore the actual discharge capacity of the battery can be improved, and the discharge efficiency of the battery is improved.
Specifically, a plurality of charge-discharge power MAP tables are recorded in the whole vehicle, each charge-discharge power MAP table corresponds to different allowable discharge time, and after the current discharge ratio is judged to be smaller than or equal to the lower limit of the current ratio, the charge-discharge power MAP table with the allowable discharge time smaller than the current allowable discharge time and the allowable discharge time closest to the current allowable discharge time is selected as the current charge-discharge power MAP table, so that excessive rise of battery power in a short time is avoided, and driving experience of a user is influenced.
In one embodiment, before switching the current charge-discharge power MAP table according to the current discharge ratio, the method further includes:
and determining the upper limit of the current ratio and/or the lower limit of the current ratio according to the MAP table of the current charge and discharge power.
In theory, the longer the allowable discharge time corresponding to the charge-discharge power MAP table, the smaller the corresponding sustainable discharge power, the smaller the output power of the battery at this time, and the lower the over-discharge possibility, the corresponding upper limit and/or lower limit of the current ratio may be increased appropriately.
Specifically, each charge-discharge power MAP table may preset a corresponding current ratio upper limit and/or a current ratio lower limit, and before the current charge-discharge power MAP table is switched according to the current discharge ratio, the corresponding current ratio upper limit and/or the current ratio lower limit is determined by a table look-up method.
According to the embodiment of the application, each charge-discharge power MAP table corresponds to different upper limit and/or lower limit of the current ratio, so that the dynamic control of switching of the charge-discharge power MAP table is realized, the safety of the battery is ensured, and meanwhile, the power output of the battery is ensured to be more in line with the driving state.
In one embodiment, after switching the current charge-discharge power MAP table according to the current discharge ratio, the method further includes:
acquiring vehicle running parameters and current output power;
determining target output power according to the current charge-discharge power MAP table and vehicle running parameters;
the battery output power is controlled to switch from the current output power to the target output power at the target switching rate.
Specifically, the target output power of the battery pack mainly depends on the running parameters of the vehicle and the current available maximum power which is queried through the current charge and discharge power MAP table, and the target output power is required to meet the running requirement of the vehicle and cannot exceed the current available maximum power, so that the target output power which best meets the current working condition is determined.
And then controlling the output power of the battery to be switched from the current output power to the target output power, so as to realize the switching of the power, and particularly, the switching can be performed at the target switching rate. The target switching rate may be a preset fixed value, for example, 5kw of power increase/decrease per second, and implementing switching of power at a fixed rate can implement smooth variation of power, avoiding abrupt power change from affecting the riding experience of the user.
In one embodiment, before controlling the battery output power to switch from the current output power to the target output power at the target switching rate, the method further comprises:
and determining a target switching rate, wherein the target switching rate is the quotient of a power difference value divided by a preset switching time length, and the power difference value is the absolute value of the difference value between the target output power and the current output power.
In the embodiment of the application, the target switching rate is determined according to the preset switching time length and the difference value between the target output power and the current output power by setting the preset switching time length, so that the power can be smoothly switched to the target output power within the preset switching time length, overlong switching time can be avoided, and smooth switching of the power can be realized.
Fig. 3 shows a flowchart of a battery power control method according to a preferred embodiment of the present application, specifically including:
step S301: in response to vehicle start, controlling battery output power according to an initial charge-discharge power MAP table, wherein the initial charge-discharge power MAP table is a charge-discharge power MAP table with the allowable discharge time of 10 s;
step S302: acquiring a current charge-discharge power MAP table;
step S303: determining the current available maximum power and the current allowable discharge time according to the current charge-discharge power MAP table;
step S304: calculating a current accumulated discharge parameter, wherein the current accumulated discharge parameter is the integral of actual output power to time in a preset time period before the current moment, and the preset time period is longer than the current allowable discharge time;
step S305: calculating a current allowable discharge parameter, wherein the current allowable discharge parameter is the product of the current available maximum power and the current allowable discharge time;
step S306: calculating a current discharge ratio, wherein the current discharge ratio is a current accumulated discharge parameter divided by a current allowable discharge parameter;
step S307: determining the upper limit of the current ratio and/or the lower limit of the current ratio according to the MAP table of the current charge and discharge power;
step S308: if the current discharge ratio is greater than or equal to the upper limit of the current ratio, executing step S309, otherwise executing step S310;
step S309: switching a charge-discharge power MAP table with allowable discharge time longer than the current allowable discharge time as a current charge-discharge power MAP table;
step S310: if the current discharge ratio is less than or equal to the lower limit of the current ratio, executing the step S311, otherwise returning to the step S302;
step S311: switching a charge-discharge power MAP table with the allowable discharge time smaller than the current allowable discharge time as a current charge-discharge power MAP table;
step S312: acquiring vehicle running parameters and current output power;
step S313: determining target output power according to the current charge-discharge power MAP table and vehicle running parameters;
step S314: determining a target switching rate, wherein the target switching rate is the quotient of a power difference value divided by a preset switching time length, and the power difference value is the absolute value of the difference value between the target output power and the current output power;
step S315: the battery output power is controlled to switch from the current output power to the target output power at the target switching rate.
The technical solution of the present application also provides a storage medium storing computer instructions for executing the battery power control method in any of the foregoing embodiments when the computer executes the computer instructions.
Fig. 4 shows an electronic device of the present application, comprising:
at least one processor 401; the method comprises the steps of,
a memory 402 communicatively coupled to the at least one processor 401; wherein,
the memory 402 stores instructions executable by the at least one processor 401 to enable the at least one processor 401 to perform all the steps of the battery power control method in any of the method embodiments described above.
The electronic device is preferably an in-vehicle electronic control unit (Electronic Control Unit, ECU), further a micro control unit (Microcontroller Unit, MCU) in the in-vehicle electronic control unit.
In fig. 4, a processor 401 is taken as an example:
the electronic device may further include: an input device 403 and an output device 404.
The processor 401, memory 402, input device 403, and output device 404 may be connected by a bus or other means, which is illustrated as a bus connection.
The memory 402 is used as a non-volatile computer readable storage medium, and may be used to store a non-volatile software program, a non-volatile computer executable program, and modules, such as program instructions/modules corresponding to the battery power control method in the embodiments of the present application, for example, the method flows shown in fig. 2 or 3. The processor 401 executes various functional applications and data processing by running nonvolatile software programs, instructions and modules stored in the memory 402, that is, implements the battery power control method in the above-described embodiment
Memory 402 may include a storage program area that may store an operating system, at least one application program required for functionality, and a storage data area; the storage data area may store data created according to the use of the battery power control method, and the like. In addition, memory 402 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 402 may optionally include memory remotely located with respect to processor 401, which may be connected via a network to a device performing the battery power control method. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 403 may receive input user clicks and generate signal inputs related to user settings and function control of the battery power control method. The output 404 may include a display device such as a display screen.
The battery power control method of any of the method embodiments described above is performed when executed by the one or more processors 401, with the one or more modules stored in the memory 402.
What has been described above is merely illustrative of the principles and preferred embodiments of the present application. It should be noted that, for a person skilled in the art, embodiments which are obtained by appropriately combining the technical solutions respectively disclosed in the different embodiments are also included in the technical scope of the present invention, and that several other modifications are possible on the basis of the principles of the present application and should also be regarded as the protection scope of the present application.

Claims (8)

1. A battery power control method, comprising:
acquiring a current charge-discharge power MAP table;
determining the current available maximum power and the current allowable discharge time according to the current charge-discharge power MAP table;
calculating a current accumulated discharge parameter, wherein the current accumulated discharge parameter is the integral of actual output power to time in a preset time period before the current moment, and the preset time period is larger than the current allowable discharge time;
switching a current charge-discharge power MAP table according to the current accumulated discharge parameter, the current available maximum power and the current allowable discharge time;
the step of switching the current charge-discharge power MAP table according to the current accumulated discharge parameter, the current available maximum power and the current allowable discharge time specifically includes:
calculating a current allowable discharge parameter, wherein the current allowable discharge parameter is the product of the current available maximum power and the current allowable discharge time;
calculating a current discharge ratio, wherein the current discharge ratio is the current accumulated discharge parameter divided by the current allowable discharge parameter;
switching a current charge-discharge power MAP table according to the current discharge ratio;
the switching of the current charge-discharge power MAP table according to the current discharge ratio specifically includes:
and if the current discharge ratio is greater than or equal to the upper limit of the current ratio, switching a charge-discharge power MAP table with the allowable discharge time greater than the current allowable discharge time as a current charge-discharge power MAP table.
2. The battery power control method of claim 1, wherein the method further comprises:
in response to vehicle start, battery output power is controlled according to an initial charge-discharge power MAP table, which is a charge-discharge power MAP table that allows discharge for 10 s.
3. The battery power control method according to claim 1, wherein the switching the current charge-discharge power MAP table according to the current discharge ratio specifically includes:
and if the current discharge ratio is smaller than or equal to the lower limit of the current ratio, switching a charge-discharge power MAP table with the allowable discharge time smaller than the current allowable discharge time to serve as the current charge-discharge power MAP table.
4. The battery power control method according to claim 1 or 3, characterized by further comprising, before switching a current charge-discharge power MAP table according to the current discharge ratio:
and determining the upper limit of the current ratio and/or the lower limit of the current ratio according to the current charge-discharge power MAP table.
5. The battery power control method according to claim 1, further comprising, after switching a current charge-discharge power MAP table according to the current discharge ratio:
acquiring vehicle running parameters and current output power;
determining target output power according to a current charge-discharge power MAP table and the vehicle running parameters;
the battery output power is controlled to switch from the current output power to the target output power at a target switching rate.
6. The battery power control method of claim 5, wherein the controlling the battery output power before switching from the current output power to the target output power at a target switching rate further comprises:
and determining a target switching rate, wherein the target switching rate is a quotient of a power difference value divided by a preset switching duration, and the power difference value is an absolute value of a difference value between the target output power and the current output power.
7. A storage medium storing computer instructions which, when executed by a computer, are adapted to carry out the battery power control method of any one of claims 1-6.
8. An electronic device comprising at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the battery power control method of any one of claims 1-6.
CN202311515075.9A 2023-11-15 2023-11-15 Battery power control method, storage medium, and electronic device Active CN117227576B (en)

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JP2016114469A (en) * 2014-12-15 2016-06-23 川崎重工業株式会社 Secondary battery charge state estimation method and secondary battery charge state estimation device
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