CN112666463A - Battery charging remaining time correction display method, correction device and storage device - Google Patents
Battery charging remaining time correction display method, correction device and storage device Download PDFInfo
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Abstract
The invention provides a battery charging remaining time correction display method, a correction device and a storage device. The method for correcting and displaying the remaining battery charging time comprises the steps of dividing a value of the capacity to be charged into a plurality of trigger intervals, matching time variables in different unit time with the plurality of trigger intervals, and when the dynamically changed value of the capacity to be charged of the battery is in different trigger intervals, adopting the time variable corresponding to the trigger interval as the unit time variation of the current value of the remaining battery charging time for display. The method for correcting and displaying the remaining time of the battery charging can reduce the situation that the displayed remaining time of the battery charging is not changed due to long-time stagnation, thereby improving the use experience of a user.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a method for correcting and displaying the charging remaining time of a battery. The invention also relates to a device for correcting the residual time of battery charging and a storage device.
Background
The electric automobile is one of new energy automobiles, has the advantages of zero emission, no pollution, low noise, economy, practicability and the like, and is the mainstream direction of future development of the automobile industry. In the use process of the electric automobile, the power battery of the electric automobile needs to be charged frequently. The length of the charging time, particularly the time remaining after full charge (i.e., the remaining time of battery charge), is a significant concern to the customer.
The remaining battery charge time refers to the time it takes for the battery to reach a full charge. The charging remaining time is affected by the temperature, the voltage, the current and the like of the battery pack, so that the remaining time is difficult to calculate accurately in real time, and the accuracy degree of the charging remaining time can improve the user experience.
Currently, the remaining charge time is estimated by subtracting the current SOC from the 100% SOC (state of charge) and dividing by the current flowing through the battery. The method has the disadvantages that the method is greatly influenced by temperature and current, the error of a calculation result is large, the charging remaining time displayed in real time can greatly fluctuate, the actual remaining time is frequently different from the actual remaining time, and the charging remaining time is often stopped on a fixed charging remaining time, so that the use feeling of a client is seriously influenced.
Disclosure of Invention
In view of this, the present invention is directed to a method for displaying a battery remaining charging time correction to reduce the situation that the displayed remaining charging time is not changed due to long-time stagnation, so as to improve the user experience.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for correcting and displaying the residual time of battery charge includes dividing the value of battery charge capacity to be charged into multiple trigger intervals, matching the multiple trigger intervals with time variables in different unit time to use the time variable corresponding to the trigger interval as the unit time variation of current value of battery charge residual time for display when the value of battery charge capacity to be dynamically changed is in different trigger intervals.
Further, the method comprises the following steps:
a setting step, namely dividing the capacity value to be charged into a plurality of trigger intervals, and matching the plurality of trigger intervals with time variables in different unit time;
the method comprises the steps of obtaining a current capacity value to be charged of a battery and corresponding charging remaining time;
a judging step, namely judging a time variable of unit time change of the current charging remaining time of the battery according to a trigger interval corresponding to the current capacity value to be charged of the battery;
and calculating, namely correcting the current charging remaining time through the time variable to be used as a charging remaining time value after unit time change.
Further, the method comprises the following steps:
and a display step of displaying the charge remaining time value obtained through the calculation and correction in the calculation step.
Further, the method comprises the following steps:
and transient correction, namely instantaneously correcting the displayed current charging remaining time at the change rate of the current when the power utilization state of the vehicle component is started in the charging process.
Further, the method comprises the following steps:
and a mode judging step, namely judging whether the battery is in a fast charging mode or a slow charging mode at present.
Further, in the setting step, the dividing the plurality of trigger intervals and the time variable matching the plurality of trigger intervals include:
a first trigger interval, wherein the value of the capacity to be charged in the first trigger interval is Ud>XmV, corresponding to the time variable being Ratem(ii) a Wherein, in the quick charging mode, X is 12 mV; in slow charging mode, X is 10 mV;
a second trigger interval, wherein the value of the capacity to be charged of the second trigger interval is XmV ≥ Ud>YmV, corresponding to the time variable being RatenTx/a; wherein Tx is the acquired charge remaining time; in the quick charging mode, Y is 8mV, A is 70; in slow charging mode, Y is 4mV, A is 35;
a third trigger interval, wherein the value of the capacity to be charged of the third trigger interval is YmV ≥ UdThe corresponding time variable is RateqTx/B; wherein Tx is the acquired charge remaining time; in the quick charging mode, B is 12; in slow charge mode, B is 5.
Further, in the setting step, in the second stepSetting a time threshold Ty in a trigger interval; if the obtained current charging remaining time Tx is less than or equal to Ty, Ratem0.5; when the charging mode is fast, Ty is 70min, and when the charging mode is slow, Ty is 35 min.
Compared with the prior art, the invention has the following advantages:
according to the method for correcting and displaying the remaining charging time of the battery, disclosed by the invention, according to the characteristic of deviation degree of the remaining charging time display in the stages with different values of the capacity to be charged, a plurality of trigger intervals are divided based on the value of the capacity to be charged, and different time variables in unit time are matched for each trigger interval so as to correct and display the obtained initial value of the current remaining charging time, so that the condition that the displayed remaining charging time is not changed due to long-time stagnation is greatly improved, the method is closer to the actual charging process, and the use experience of a user in the charging process of the battery can be improved.
In addition, based on different trigger intervals and in combination with the conditions of the capacity value to be charged and the initial value of the charging remaining time, reasonable time variable correction values are set for modes such as quick charging and full charging, so that the corrected charging remaining time is more accurate in observation experience of a user, and the use experience of the user is further improved.
Another object of the present invention is to provide a battery charge remaining time correction apparatus, including:
the setting module is used for dividing the capacity value to be charged into a plurality of trigger intervals and matching the trigger intervals with time variables in different unit time;
the acquisition module is used for acquiring the current capacity value to be charged of the battery and the corresponding charging remaining time value;
the judging module is used for judging the time variable of unit time change of the current charging remaining time of the battery according to the triggering interval corresponding to the current capacity value to be charged of the battery;
and the calculation module is used for correcting and calculating the current charging remaining time and the time variable to be used as a charging remaining time value after unit time change.
Further, the apparatus comprises:
and the display module is used for dynamically displaying the charging remaining time value obtained by the calculation of the calculation module.
Compared with the prior art, the device for correcting the remaining time of battery charging can well complete the established correction calculation steps through the arrangement of the acquisition module, the judgment module, the calculation module and the like based on the correction method, so that the corrected remaining time of battery charging value can be obtained in real time and used for displaying, and the use experience of a user in the process of battery charging is improved.
Another object of the present invention is to provide a storage device storing an execution program executed in the steps of the battery charge remaining time correction display method according to the present invention.
Compared with the prior art, the storage device can store the functional modules of acquisition, judgment, calculation and the like in the battery charging remaining time correction device in the form of programs in the storage device for the calculation module to call, and executes the correction calculation of the charging remaining time according to the steps in the battery charging remaining time correction display method, thereby realizing the correction calculation steps in a low-cost and rapid manner.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention, and the description is given by way of example only and without limitation to the terms of relative positions. In the drawings:
fig. 1 is a schematic flowchart illustrating steps of a method for correcting and displaying remaining battery charging time according to a first embodiment of the present invention;
description of reference numerals:
s1, setting; s2, an acquisition step; s3, mode judging step; s4, a judging step; s5, a calculation step; s6, transient correction; and S7, displaying.
Detailed Description
In the description of the present invention, it should be noted that the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connected" are used unless otherwise specifically limited "、"connecting element" is to be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
The embodiment relates to a method for correcting and displaying the remaining time of battery charging, which can reduce the situation that the remaining time of battery charging displayed in the process of battery charging is not changed due to long-time stagnation, thereby improving the use experience of a user.
The method for correcting and displaying the remaining battery charging time comprises the steps of dividing a value of the capacity to be charged into a plurality of trigger intervals, matching time variables in different unit times for the plurality of trigger intervals, and when the value of the capacity to be charged of the dynamically changed battery is in different trigger intervals, adopting the time variable corresponding to the trigger interval as the unit time variation of the current value of the remaining battery charging time for display.
Based on the above design concept, an exemplary flow of steps of the method for displaying the remaining battery charging time correction according to the present embodiment is shown in fig. 1.
Specifically, the method may be configured as the following steps:
step S1 is set, in which the value of the capacity to be charged is divided into a plurality of trigger intervals, and the time variables in different unit times are matched for the plurality of trigger intervals. Wherein, the setting of the trigger interval can be U according to the capacity value to be chargeddIs sized, i.e.The difference between the voltage at 100% SOC full charge of the battery and the current battery voltage. The U isdIn mV. Are simultaneously UdTwo thresholds X and Y are set. When U is turnedd>XmV is the first trigger interval, when XmV is more than or equal to Ud>YmV is the second trigger interval, when YmV is more than or equal to UdThe time is the third trigger interval.
In the first trigger interval, the corresponding time variable is Ratem(ii) a Time variable Rate corresponding to second trigger intervalnTx/a; time variable Rate corresponding to third trigger intervalqTx/B. Wherein Tx is the acquired charge remaining time (unit is min), i.e. the initial value of the charge remaining time to be corrected; A. b is a constant value according to the current value U of the charge capacity of the battery obtained in the obtaining step S2 described belowdDetermining factors such as a charging remaining time value Tx corresponding to the charging time value Tx and different charging modes; ratemAlso according to the U acquired in the acquisition step S2dTx, and different modes of charging.
An obtaining step S2 of obtaining the current capacity value U to be charged of the batterydAnd its corresponding charge remaining time value Tx.
The mode determination step S3 determines whether the battery is currently in the fast charge mode or the slow charge mode. In the first trigger interval, when the battery is in the fast charge mode, X is 12 mV; in slow charge mode, X is 10 mV. In the second trigger interval and the third trigger interval, in the fast charge mode, Y is 8mV, a is 70, and B is 12; in slow charging mode, Y is 4mV, a is 35, and B is 5.
Meanwhile, in the setting step S1, a time threshold Ty is set; in a first trigger interval, if the acquired current charging remaining time Tx is less than or equal to Ty, Rate is determinedm0.5; when the charging mode is fast, Ty is 70min, and when the charging mode is slow, Ty is 35 min.
In the decision step S4, according to the current value U of the battery capacity to be chargeddAnd judging the time variable Rate of the unit time change of the current charging remaining time of the battery in the corresponding trigger interval. By integrating the above setting rule of the Rate, the value situation list of the Rate is as follows:
rate in the above tablem、Raten、RateqThe time variable Rate of different trigger intervals.
In the calculation step S5, the difference between the current charge remaining time and the time variable is used as the charge remaining time value after the change per unit time. Specifically, the acquired charge remaining time initial value Tx is corrected based on the time variable Rate obtained in the above table, and a charge remaining time correction value for display is obtained: t Rate Tx.
The above-mentioned charge remaining time correction value is displayed for the user to observe in the form of an electronic display device or the like, i.e., the display step S7 of the method is formed.
Further, in the correction method of the present embodiment, a transient correction step S6 may be provided between the calculation step S5 and the display step S7 to perform transient correction for the case where the state of charge of the vehicle member is started or the battery is fully charged during charging. And for the condition that the electricity utilization state of the vehicle component is started in the charging process, a mode of instantaneously correcting the displayed current charging remaining time by using the change rate of the current is adopted.
When the SOC is 100%, that is, the battery is fully charged, the display time T is instantaneously corrected from the current value to 0.
When an external load component such as an air conditioner is turned on while charging is being performed, the current flowing through the battery cell is changed. For example, when the current flowing through the cell changes from I1 to I2 at the acquired charge remaining time initial value Tx, the time variable Rate at this time is I1/I2, and the charge remaining time T is displayed as Rate Tx I1T 3/I2. When an external load component such as an air conditioner is turned off, the current flowing through the battery cell is changed from I3 to I4, the time variable Rate at this time is I3/I4, and the remaining charge time T is displayed as Rate Tx I3T 3/I4.
It should be noted that the above-mentioned trigger interval division and the Rate setting are preferred embodiments, and other parameters and their values may be used for setting. For example, in defining the trigger interval in fast charge mode, the margin parameter of X ═ 12mV may be replaced by whether the true SOC reaches 90% of the full charge battery; when defining the trigger interval in the slow charge mode, the limit parameter of Y ═ 4mV may be replaced by whether the charge request current is 0.01C (C means the battery capacity, e.g., 20AH, 0.01C ═ 0.01 × 20 ═ 0.2A).
According to the method for correcting and displaying the remaining charging time of the battery, according to the characteristic of deviation degree of the remaining charging time displayed in different stages of the capacity value to be charged, a plurality of trigger intervals are divided based on the capacity value to be charged, time variables in different unit time are matched for each trigger interval, and the obtained initial value of the current remaining charging time is corrected and displayed, so that the condition that the displayed remaining charging time is not changed due to long-time stagnation is greatly improved, the method is closer to the actual charging process, and the use experience of a user in the battery charging process can be improved.
Example two
The present embodiment relates to a battery charge remaining time correction apparatus, including:
and the setting module is used for dividing the capacity value to be charged into a plurality of triggering intervals and matching the triggering intervals with time variables in different unit time.
And the acquisition module is used for acquiring the current capacity value to be charged of the battery and the corresponding charging remaining time value.
And the judging module is used for judging the time variable of unit time change of the current charging remaining time of the battery according to the triggering interval corresponding to the current capacity value to be charged of the battery.
And the calculation module is used for correcting and calculating the current charging remaining time and the time variable to be used as a charging remaining time value after unit time change.
Meanwhile, the device comprises a display module for dynamically displaying the charging remaining time value calculated and obtained by the calculation module.
Based on the method for correcting and displaying the remaining battery charging time provided by the first embodiment, the set correction calculation steps can be well completed through the arrangement of the acquisition module, the judgment module, the calculation module and the like, so that the corrected remaining battery charging time value can be obtained in real time and used for displaying, and the use experience of a user in the battery charging process is improved.
The functional modules may be program functional blocks, or integrated circuits or chips, and various operating parameters of the chips may be set by using the existing functional chips according to the method and related parameters provided in the first embodiment, so as to complete the functions of the functional modules of the apparatus.
EXAMPLE III
The present embodiment relates to a storage device that stores an execution program executed in the steps of the battery charge remaining time correction display method of the first embodiment and usable as a storage means of the battery charge remaining time correction device of the second embodiment.
In practical applications, the functional modules for obtaining, determining, calculating, and the like in the device for correcting the remaining battery charging time of the present invention may be stored in the storage device in the form of a program for the calculation module to call, and the correction calculation of the remaining battery charging time may be performed according to the steps in the method for displaying the correction of the remaining battery charging time of the present invention, so as to implement the correction calculation steps of the present invention at a lower cost and in a fast manner.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method for correcting and displaying the remaining time of battery charging is characterized in that: the method comprises the steps of dividing a capacity value to be charged into a plurality of trigger intervals, matching time variables in different unit time with the plurality of trigger intervals, and when the dynamically changed capacity value to be charged of the battery is in different trigger intervals, adopting the time variable corresponding to the trigger intervals as the unit time variable quantity of the current charging remaining time value for display.
2. The battery charging remaining time correction display method according to claim 1, characterized by comprising the steps of:
a setting step (S1) of dividing the value of the capacity to be charged into a plurality of trigger intervals and matching the trigger intervals with time variables in different unit times;
an obtaining step (S2) for obtaining the current capacity value to be charged of the battery and the charging remaining time corresponding to the capacity value;
a judging step (S4) for judging the time variable of unit time change of the current charging remaining time of the battery according to the triggering interval corresponding to the current capacity value to be charged of the battery;
and a calculation step (S5) in which the current charge remaining time is corrected by the time variable and used as a charge remaining time value after the unit time is changed.
3. The battery charging remaining time correction display method according to claim 2, characterized by further comprising the steps of:
and a display step (S7) for displaying the charge remaining time value obtained by the calculation and correction in the calculation step (S5).
4. The battery charging remaining time correction display method according to claim 2 or 3, characterized by further comprising the steps of:
and a transient correction step (S6) for instantaneously correcting the current remaining charge time displayed at the rate of change of the current when the state of charge of the vehicle member is started during charging.
5. The battery charging remaining time correction display method according to claim 2 or 3, characterized by further comprising the steps of:
and a mode judging step (S3) for judging whether the battery is in the fast charging mode or the slow charging mode currently.
6. The battery charging remaining time correction display method according to claim 5, characterized in that: in the setting step (S1), the divided trigger intervals and the time variables matching the trigger intervals include:
a first trigger interval, wherein the value of the capacity to be charged in the first trigger interval is Ud>XmV, corresponding to the time variable being Ratem(ii) a Wherein, in the quick charging mode, X is 12 mV; in slow charging mode, X is 10 mV;
a second trigger interval, wherein the value of the capacity to be charged of the second trigger interval is XmV ≥ Ud>YmV, corresponding to the time variable being RatenTx/a; wherein Tx is the acquired charge remaining time; in the quick charging mode, Y is 8mV, A is 70; in slow charging mode, Y is 4mV, A is 35;
a third trigger interval, wherein the value of the capacity to be charged of the third trigger interval is YmV ≥ UdThe corresponding time variable is RateqTx/B; wherein Tx is the acquired charge remaining time; in the quick charging mode, B is 12; in slow charge mode, B is 5.
7. The battery charging remaining time correction display method according to claim 6, characterized in that: in the setting step (S1), a time threshold Ty is set in the first trigger interval; if the obtained current charging remaining time Tx is less than or equal to Ty, Ratem0.5; when the charging mode is fast, Ty is 70min, and when the charging mode is slow, Ty is 35 min.
8. A battery charge remaining time correction apparatus, characterized in that the apparatus comprises:
the setting module is used for dividing the capacity value to be charged into a plurality of trigger intervals and matching the trigger intervals with time variables in different unit time;
the acquisition module is used for acquiring the current capacity value to be charged of the battery and the corresponding charging remaining time value;
the judging module is used for judging the time variable of unit time change of the current charging remaining time of the battery according to the triggering interval corresponding to the current capacity value to be charged of the battery;
and the calculation module is used for correcting and calculating the current charging remaining time and the time variable to be used as a charging remaining time value after unit time change.
9. The battery charging remaining time correction apparatus according to claim 8, characterized by comprising:
and the display module is used for dynamically displaying the charging remaining time value obtained by the calculation of the calculation module.
10. A storage device storing an execution program, characterized in that: the execution program is executed with the steps of the battery charge remaining time correction display method according to any one of claims 1 to 7.
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| WO2024085234A1 (en) * | 2022-10-19 | 2024-04-25 | Fdk株式会社 | Charging control device, power storage system, method for reporting remaining charging time, and program for reporting remaining charging time |
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