CN116061755A - Correction method and device for representing residual electric quantity of power battery for vehicle and vehicle - Google Patents
Correction method and device for representing residual electric quantity of power battery for vehicle and vehicle Download PDFInfo
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- CN116061755A CN116061755A CN202111298801.7A CN202111298801A CN116061755A CN 116061755 A CN116061755 A CN 116061755A CN 202111298801 A CN202111298801 A CN 202111298801A CN 116061755 A CN116061755 A CN 116061755A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a correction method, a correction device and an automobile for representing the residual electric quantity of a power battery for an automobile, which comprise the steps of obtaining an actual current value, a maximum voltage value and a true residual electric quantity value of the power battery in real time; when the power battery is charged, respectively comparing an actual current value, a maximum voltage value and a real residual current value with corresponding preset judging thresholds in real time to obtain a voltage following strategy comparison result; judging whether the voltage meets a preset voltage pre-following condition according to a voltage following strategy comparison result, and if the voltage meets the preset voltage pre-following condition, outputting a voltage following correction residual electric quantity value; and correcting the final display residual electric quantity value according to the output voltage following correction residual electric quantity value. According to the invention, a voltage following strategy, current and time limitation entering the voltage following and real SOC limitation are introduced, the voltage following is identified when the charging enters the tail end, and the instrument SOC abnormality problem caused by the real SOC estimation error during charging is avoided.
Description
Technical Field
The invention relates to the technical field of control of power batteries of new energy automobiles, in particular to a correction method and device for representing the residual electric quantity of an automobile power battery and an automobile.
Background
In a new energy automobile, the state of charge (SOC) of a battery is a state quantity representing the residual capacity of the battery, and accurate estimation of the true SOC has important significance for preventing overcharge and overdischarge of the battery and the power performance of the whole automobile. Meanwhile, the display SOC strategy of the power battery system is also important to user experience.
The current display SOC is usually mapped from the true SOC, and the value of 0% -100% of the display SOC is mapped according to the available DOD range of the battery. However, when an estimation error occurs in the real SOC or correction occurs under a specific working condition, the display SOC directly maps the real SOC to jump, such as the phenomenon that the display SOC drops during charging, and the like, so that the experience of abnormal battery electric quantity is brought to a client; at the end of charging, the battery is already in a pre-full state, but the mapped display SOC is still small, the state of the current electric quantity cannot be represented, the situation that the display SOC does not reach 100% under the condition that the vehicle is already full can occur, and the customer experience is poor.
Disclosure of Invention
The invention aims to provide a correction method and device for representing the residual electric quantity of a power battery for a vehicle and an automobile, and solves the technical problem that the current electric quantity state cannot be represented when the actual SOC calculation error is large in the existing method.
In one aspect, a method for correcting a remaining capacity of a power battery for a vehicle is provided, including:
acquiring an actual current value, a maximum voltage value and a true residual current value of the power battery in real time;
when the power battery is charged, respectively comparing an actual current value, a maximum voltage value and a real residual current value with corresponding preset judging thresholds in real time to obtain a voltage following strategy comparison result;
judging whether the voltage meets a preset voltage pre-following condition according to a voltage following strategy comparison result, and if the voltage meets the preset voltage pre-following condition, outputting a voltage following correction residual electric quantity value; and correcting the final display residual electric quantity value according to the output voltage following correction residual electric quantity value.
Preferably, the obtaining the comparison result of the voltage following strategy specifically includes:
comparing the actual current value with a current limiting threshold in real time, and recording duration time when the actual current value is greater than or equal to the current limiting threshold; comparing the duration time of the actual current value which is larger than or equal to the current limiting threshold value with a preset time duration threshold value to obtain a first comparison result;
comparing the real residual electric quantity value with a residual electric quantity limiting threshold value in real time to obtain a second comparison result;
comparing the maximum voltage value with a maximum voltage threshold value in real time to obtain a third comparison result;
and combining the first comparison result, the second comparison result and the third comparison result to obtain a voltage following strategy comparison result.
Preferably, the determining whether the voltage meets the preset voltage pre-following condition according to the voltage following strategy comparison result specifically includes:
and when the maximum voltage value is larger than or equal to a maximum voltage threshold value, the real residual electric quantity value is larger than or equal to a residual electric quantity limiting threshold value, and the duration time of the actual electric current value larger than or equal to a current limiting threshold value reaches a time duration threshold value, judging that a preset voltage pre-following condition is met.
Preferably, the correcting the final display remaining power value according to the output voltage following correction remaining power value specifically includes:
and when the maximum voltage value has a rebound condition, the output voltage continues to increase along with the corrected residual electric quantity value with a preset integral multiplying power, so that the final display residual electric quantity value is obtained.
On the other hand, a correction device for representing the residual electric quantity of the power battery for the vehicle is also provided, so as to realize the correction method for representing the residual electric quantity of the power battery for the vehicle, which comprises the following steps:
the basic parameter acquisition module of the power battery is used for acquiring an actual current value, a maximum voltage value and a true residual current value of the power battery in real time;
the variable threshold comparison module is used for respectively comparing an actual current value, a maximum voltage value and a real residual current value with corresponding preset judgment thresholds in real time when the power battery is charged to obtain a voltage following strategy comparison result;
the voltage follow-up correction module is used for judging whether the voltage meets the preset voltage pre-follow condition according to the comparison result of the voltage follow-up strategy, and outputting a voltage follow-up correction residual electric quantity value if the voltage meets the preset voltage pre-follow condition; and correcting the final display residual electric quantity value according to the output voltage following correction residual electric quantity value.
Preferably, the variable threshold comparison module is further configured to compare the actual current value with a current limit threshold in real time, and record a duration time that the actual current value is greater than or equal to the current limit threshold; comparing the duration time of the actual current value which is larger than or equal to the current limiting threshold value with a preset time duration threshold value to obtain a first comparison result;
comparing the real residual electric quantity value with a residual electric quantity limiting threshold value in real time to obtain a second comparison result;
comparing the maximum voltage value with a maximum voltage threshold value in real time to obtain a third comparison result;
and combining the first comparison result, the second comparison result and the third comparison result to obtain a voltage following strategy comparison result.
Preferably, the voltage following correction module is further configured to determine that a preset voltage pre-following condition is satisfied when the maximum voltage value is equal to or greater than a maximum voltage threshold, the actual remaining power value is equal to or greater than a remaining power limit threshold, and the duration time of the actual current value being equal to or greater than a current limit threshold reaches a time duration threshold.
Preferably, the voltage following correction module is further configured to, when the rebound condition occurs in the maximum voltage value, continue to increase the output voltage following correction residual electric quantity value with a preset integration multiplying power, so as to obtain a final display residual electric quantity value.
On the other hand, the automobile is also provided, and the residual electric quantity value is corrected when the power battery is charged through the correction device for representing the residual electric quantity of the power battery for the automobile.
In summary, the embodiment of the invention has the following beneficial effects:
according to the correction method and device for representing the residual quantity of the power battery for the vehicle and the vehicle, provided by the invention, the voltage following strategy is introduced, the current and time limit for entering the voltage following and the real SOC limit are increased, the entering voltage following when the charging enters the terminal is identified, and the customer experience of displaying the SOC at the charging terminal is improved. By the voltage following strategy, the voltage following is identified when the charging enters the tail end, and the problem of abnormal instrument SOC caused by the real SOC estimation error during charging is avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that it is within the scope of the invention to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
Fig. 1 is a schematic flow chart of a correction method for representing the residual capacity of a power battery for a vehicle according to an embodiment of the invention.
Fig. 2 is a logic diagram of a method for correcting a remaining power of a power battery for a vehicle according to an embodiment of the invention.
Fig. 3 is a schematic diagram of a correction device for representing the residual capacity of a power battery for a vehicle according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
Referring to fig. 1 and 2, schematic diagrams of an embodiment of a method for correcting a residual capacity of a power battery for a vehicle according to the present invention are shown. In this embodiment, the method comprises the steps of:
acquiring an actual current value, a maximum voltage value and a true residual current value of the power battery in real time; that is, basic parameters of the power battery are obtained: actual current value I of battery Act Maximum voltage value U cellMax True SOC value SOC Act 。
Further, when the power battery is charged, the actual current value, the maximum voltage value and the actual residual current value are respectively compared with the corresponding preset judgment threshold in real time to obtain a voltage following strategy comparison result; the actual current value, the maximum voltage value and the actual residual electric quantity value are respectively compared with corresponding thresholds, the respective comparison results are combined into a final voltage following strategy comparison result, whether the conditions meeting the follow-up preset voltage pre-following conditions exist or not is determined by discriminating various conditions included in the final voltage following strategy comparison result, and if the conditions exist, the displayed residual electric quantity value is required to be corrected. If the correction is not performed, the correction is not required, and the display is performed according to the actual result.
In a specific embodiment, the voltage following strategy comparison result specifically includes: comparing the actual current value with a current limiting threshold in real time, and recording duration time when the actual current value is greater than or equal to the current limiting threshold; comparing the duration time of the actual current value which is larger than or equal to the current limiting threshold value with a preset time duration threshold value to obtain a first comparison result; i.e. comparison in real time I Act And a current limit threshold I Fllw And need to determine I Act Greater than or equal to the current limit threshold I Fllw For the subsequent determination of the voltage following flag bit F, corresponding to the determination of whether the voltage satisfies the preset voltage pre-following condition, wherein I Fllw Defined as the small charge rate current at the end of charge. Real time leaving the true residueComparing the electric quantity value with a residual electric quantity limiting threshold value to obtain a second comparison result; i.e. comparing SOC in real time Act And SOC limit threshold SOC Fllw Wherein SOC is Fllw Is defined as the true SOC value characterizing the end of the charge. Comparing the maximum voltage value with a maximum voltage threshold value in real time to obtain a third comparison result; i.e. comparing U in real time cellMax And maximum voltage threshold U cellFllw Wherein U is cellFllw Defined as the slope growth point of the dV/dQ curve. The physical meaning of the dV/dQ curve is that the material contains capacity in a unit voltage range, and for the positive electrode and the negative electrode materials of the lithium ion battery, there is a voltage platform, and the negative electrode capacity of the voltage platform is higher, that is, the voltage platform has very much capacity in a small voltage fluctuation range, so that the dV/dQ curve is a characteristic peak, and it is generally considered that each peak on the dV/dQ curve represents an electrochemical reaction, and the positions and the heights of the peaks in the dV/dQ curve can be different due to different reaction potentials of different materials. Specifically, the first comparison result, the second comparison result and the third comparison result are combined to obtain a voltage following strategy comparison result.
Further, judging whether the voltage meets a preset voltage pre-following condition according to a voltage following strategy comparison result, and if the voltage meets the preset voltage pre-following condition, outputting a voltage following correction residual electric quantity value; and correcting the final display residual electric quantity value according to the output voltage following correction residual electric quantity value.
In a specific embodiment, when the maximum voltage value is greater than or equal to a maximum voltage threshold, the actual residual electric quantity value is greater than or equal to a residual electric quantity limiting threshold, and the duration time of the actual electric current value being greater than or equal to a current limiting threshold reaches a time duration threshold, determining that a preset voltage pre-following condition is met; when the maximum voltage value is smaller than a maximum voltage threshold value or the actual residual electric quantity value is smaller than a residual electric quantity limiting threshold value or the duration time of the actual electric current value being larger than or equal to a current limiting threshold value is not up to a time duration threshold value, judging that a preset voltage pre-following condition is not met, not entering a voltage pre-following strategy, and not needing to enterAnd (5) line correction. That is, when U cellMax A value of greater than or equal to U cellFllw Value and SOC Act SOC greater than or equal to Fllw ，I Act Greater than or equal to I Fllw A certain time threshold T Fllw When the above conditions are met, the voltage pre-following flag bit F is set, and the setting of the voltage pre-following flag bit is equivalent to judging that the voltage meets the preset voltage pre-following conditions.
After the preset voltage pre-following condition is met, when the rebound condition occurs to the maximum voltage value, the output voltage is continuously increased along with the corrected residual electric quantity value at the preset integral multiplying power, and the final display residual electric quantity value is obtained. That is, the SOC rebound strategy is prevented from being displayed following the output of the corrected SOC value: output voltage follows correction SOC value SOC Corrd And when U cellMax SOC when rebound occurs Corrd Still can increase with certain integration multiplying power gamma (preset integration multiplying power, can set up according to actual conditions), prevent showing the SOC decline when charging.
Fig. 3 is a schematic diagram of an embodiment of a correction device for representing a residual capacity of a power battery for a vehicle according to the present invention. In this embodiment, the apparatus is configured to implement a correction method for characterizing a remaining power of a power battery for a vehicle, including:
the basic parameter acquisition module of the power battery is used for acquiring an actual current value, a maximum voltage value and a true residual current value of the power battery in real time;
the variable threshold comparison module is used for respectively comparing an actual current value, a maximum voltage value and a real residual current value with corresponding preset judgment thresholds in real time when the power battery is charged to obtain a voltage following strategy comparison result; specifically, the variable threshold comparison module is further configured to compare the actual current value with a current limit threshold in real time, and record a duration time when the actual current value is greater than or equal to the current limit threshold; comparing the duration time of the actual current value which is larger than or equal to the current limiting threshold value with a preset time duration threshold value to obtain a first comparison result; comparing the real residual electric quantity value with a residual electric quantity limiting threshold value in real time to obtain a second comparison result; comparing the maximum voltage value with a maximum voltage threshold value in real time to obtain a third comparison result; and combining the first comparison result, the second comparison result and the third comparison result to obtain a voltage following strategy comparison result.
The voltage follow-up correction module is used for judging whether the voltage meets the preset voltage pre-follow condition according to the comparison result of the voltage follow-up strategy, and outputting a voltage follow-up correction residual electric quantity value if the voltage meets the preset voltage pre-follow condition; and correcting the final display residual electric quantity value according to the output voltage following correction residual electric quantity value. Specifically, the voltage following correction module is further configured to determine that a preset voltage pre-following condition is satisfied when the maximum voltage value is equal to or greater than a maximum voltage threshold, the actual remaining power value is equal to or greater than a remaining power limit threshold, and a duration time of the actual current value being equal to or greater than a current limit threshold reaches a time duration threshold. And the voltage following correction module is also used for continuously increasing the output voltage following correction residual electric quantity value with a preset integral multiplying power when the maximum voltage value has rebound condition, so as to obtain a final display residual electric quantity value.
The invention also provides an automobile, and the residual electric quantity value is corrected when the power battery is charged by the correction device for representing the residual electric quantity of the power battery for the automobile.
Regarding the specific implementation process of the device for correcting the residual electric quantity of the vehicle power battery and the implementation process of the vehicle, reference may be made to the specific process of the method for correcting the residual electric quantity of the vehicle power battery, which is not described herein.
In summary, the embodiment of the invention has the following beneficial effects:
according to the correction method and device for representing the residual quantity of the power battery for the vehicle and the vehicle, provided by the invention, the voltage following strategy is introduced, the current and time limit for entering the voltage following and the real SOC limit are increased, the entering voltage following when the charging enters the terminal is identified, and the customer experience of displaying the SOC at the charging terminal is improved. By the voltage following strategy, the voltage following is identified when the charging enters the tail end, and the problem of abnormal instrument SOC caused by the real SOC estimation error during charging is avoided.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (9)
1. A correction method for characterizing remaining power of a power battery for a vehicle, comprising:
acquiring an actual current value, a maximum voltage value and a true residual current value of the power battery in real time;
when the power battery is charged, respectively comparing an actual current value, a maximum voltage value and a real residual current value with corresponding preset judging thresholds in real time to obtain a voltage following strategy comparison result;
judging whether the voltage meets a preset voltage pre-following condition according to a voltage following strategy comparison result, and if the voltage meets the preset voltage pre-following condition, outputting a voltage following correction residual electric quantity value; and correcting the final display residual electric quantity value according to the output voltage following correction residual electric quantity value.
2. The method of claim 1, wherein the obtaining the voltage following strategy comparison result specifically comprises:
comparing the actual current value with a current limiting threshold in real time, and recording duration time when the actual current value is greater than or equal to the current limiting threshold; comparing the duration time of the actual current value which is larger than or equal to the current limiting threshold value with a preset time duration threshold value to obtain a first comparison result;
comparing the real residual electric quantity value with a residual electric quantity limiting threshold value in real time to obtain a second comparison result;
comparing the maximum voltage value with a maximum voltage threshold value in real time to obtain a third comparison result;
and combining the first comparison result, the second comparison result and the third comparison result to obtain a voltage following strategy comparison result.
3. The method of claim 2, wherein the determining whether the voltage satisfies the preset voltage pre-follow condition according to the voltage follow strategy comparison result specifically comprises:
and when the maximum voltage value is larger than or equal to a maximum voltage threshold value, the real residual electric quantity value is larger than or equal to a residual electric quantity limiting threshold value, and the duration time of the actual electric current value larger than or equal to a current limiting threshold value reaches a time duration threshold value, judging that a preset voltage pre-following condition is met.
4. The method of claim 3, wherein correcting the final display residual capacity value based on the output voltage follow-up corrected residual capacity value specifically comprises:
and when the maximum voltage value has a rebound condition, the output voltage continues to increase along with the corrected residual electric quantity value with a preset integral multiplying power, so that the final display residual electric quantity value is obtained.
5. A correction device for characterizing the residual capacity of a power battery for vehicles, for implementing a method as defined in any one of claims 1 to 4, comprising:
the basic parameter acquisition module of the power battery is used for acquiring an actual current value, a maximum voltage value and a true residual current value of the power battery in real time;
the variable threshold comparison module is used for respectively comparing an actual current value, a maximum voltage value and a real residual current value with corresponding preset judgment thresholds in real time when the power battery is charged to obtain a voltage following strategy comparison result;
the voltage follow-up correction module is used for judging whether the voltage meets the preset voltage pre-follow condition according to the comparison result of the voltage follow-up strategy, and outputting a voltage follow-up correction residual electric quantity value if the voltage meets the preset voltage pre-follow condition; and correcting the final display residual electric quantity value according to the output voltage following correction residual electric quantity value.
6. The apparatus of claim 5, wherein the variable threshold comparison module is further configured to compare the actual current value to a current limit threshold in real time and record a duration of time that the actual current value is greater than or equal to the current limit threshold; comparing the duration time of the actual current value which is larger than or equal to the current limiting threshold value with a preset time duration threshold value to obtain a first comparison result;
comparing the real residual electric quantity value with a residual electric quantity limiting threshold value in real time to obtain a second comparison result;
comparing the maximum voltage value with a maximum voltage threshold value in real time to obtain a third comparison result;
and combining the first comparison result, the second comparison result and the third comparison result to obtain a voltage following strategy comparison result.
7. The apparatus of claim 6, wherein the voltage follow-up correction module is further configured to determine that a preset voltage pre-follow condition is met when a duration of the maximum voltage value being equal to or greater than a maximum voltage threshold and the actual remaining power value being equal to or greater than a remaining power limit threshold and the actual current value being equal to or greater than a current limit threshold reaches a time duration threshold.
8. The apparatus of claim 7, wherein the voltage follower correction module is further configured to continue to increase the output voltage follower corrected residual power value by a predetermined integration rate to obtain a final display residual power value when the rebound condition occurs in the maximum voltage value.
9. An automobile, characterized in that the correction of the residual electric power value at the time of charging the power battery is performed by the correction device for characterizing the residual electric power of the power battery for an automobile according to any one of claims 5 to 8.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117269774A (en) * | 2023-11-20 | 2023-12-22 | 羿动新能源科技有限公司 | Correction method of SOC of power battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117269774A (en) * | 2023-11-20 | 2023-12-22 | 羿动新能源科技有限公司 | Correction method of SOC of power battery |
| CN117269774B (en) * | 2023-11-20 | 2024-04-12 | 羿动新能源科技有限公司 | Correction method of SOC of power battery |
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