CN112677820B - Vehicle battery management method and device and vehicle - Google Patents
Vehicle battery management method and device and vehicle Download PDFInfo
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Abstract
The invention discloses a vehicle battery management method, a vehicle battery management device and a vehicle, wherein the method comprises the following steps: acquiring storage battery state information in real time; when the battery working value is lower than the battery early warning value and higher than the battery working threshold value, acquiring the variation trend of the battery working value; when the working value of the battery is in a descending trend, judging whether the storage battery is in a normal power-deficient state; if yes, sending out early warning information to a vehicle driver; when the battery working value is in the rising trend, acquiring the first time when the battery working value rises from the battery critical value to the battery early warning value; if the first time is greater than the first preset time, early warning information is sent to a vehicle driver; if the first time is not more than the first preset time, acquiring second time lasting after the working value of the battery reaches the early warning value of the battery; if the second time is less than the second preset time, the early warning information is sent to the vehicle driver, unnecessary interference is avoided through accurate control over the early warning strategy, and early warning accuracy is improved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle battery management method and device and a vehicle.
Background
The accumulator is an important component on the vehicle for supplying electric energy required for starting the vehicle and adjusting the state of imbalance between the output of the generator and the load; the quality of the storage battery and the sufficiency of the electric energy directly influence the running of the vehicle. Especially, when the storage battery is in a power shortage state, the storage battery power shortage will cause the vehicle to be incapable of starting, so that the storage battery voltage/electric quantity monitoring and early warning are important research subjects of many vehicle factories. At present, two main means are available, when the voltage of a storage battery is lower than a preset value, the storage battery of a vehicle is intelligently supplemented, or a user is reminded to start the vehicle to charge in time through a vehicle networking push message.
However, many car factories judge only by monitoring whether the storage battery is lower than a preset threshold (for example, 10.8V), and when the storage battery is lower than the threshold, the car is pushed for early warning, otherwise, the car is not reminded, but due to the characteristics of the storage battery, the normal use of the car by a user is not affected under some early warning conditions, and early warning information is easy to disturb the user.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a vehicle battery management method and apparatus, and a vehicle, which can improve the early warning efficiency of the vehicle in a power-down state.
In order to solve the technical problems, the specific technical scheme of the invention is as follows:
in one aspect, the present invention provides a vehicle battery management method, the method comprising the steps of:
acquiring storage battery state information in real time, wherein the storage battery state information comprises a battery working value;
when the battery working value is lower than the battery early warning value and higher than a battery working threshold value, acquiring the variation trend of the battery working value;
when the battery working value is in a descending trend, judging whether the storage battery is in a normal power-lack state;
if yes, sending early warning information to a vehicle driver;
when the battery working value is in an ascending trend, acquiring first time when the battery working value is increased from a battery critical value to the battery early warning value;
if the first time is longer than a first preset time, early warning information is sent to a vehicle driver;
if the first time is not more than a first preset time, acquiring a second time which lasts after the battery working value reaches the battery early warning value;
and if the second time is greater than a second preset time, sending early warning information to a vehicle driver.
Optionally, the battery operating value includes a battery voltage or a battery remaining capacity value.
Further, when the battery operating value is lower than the battery warning value and higher than the battery operating threshold value, acquiring a variation trend of the battery operating value includes:
when the battery working value is lower than the battery early warning value and higher than the battery working threshold value, acquiring a target battery working value, wherein the target battery working value is obtained by calculation according to a preset time interval and the battery working value;
and acquiring the variation trend of the battery working value according to the battery working value and the target battery working value.
Further, when the battery operating value is in a descending trend, the determining whether the storage battery is in a normal power-shortage state includes:
if the battery working value is in a descending trend, acquiring the time from the battery early warning value to the battery working value;
calculating the change curvature of the battery working value according to the battery early warning value, the battery working value and the time from the battery early warning value to the battery working value;
judging whether the change curvature of the battery working value is not greater than a preset change curvature or not according to the change curvature of the battery working value;
and if so, the storage battery is in an abnormal power shortage state.
Optionally, the preset variation curvature includes a curvature of a variation of the battery warning value to the battery operation threshold.
Further, when the battery operating value is in an ascending trend, acquiring a first time when the battery operating value rises from a battery critical value to the battery warning value includes:
when the battery working value is in an ascending trend, acquiring the time when the storage battery is in a battery critical value;
acquiring the time for the storage battery to reach the battery early warning value along with the rise of the battery working value;
and calculating first time for obtaining the battery working value to rise from the battery critical value to the battery early warning value according to the time for the storage battery to be in the battery critical value and the time for the storage battery to reach the battery early warning value.
Further, the obtaining of the battery state information in real time includes, after the battery state information includes a battery operating value:
and when the battery working value is lower than the battery working threshold value and lasts for a third preset time, sending early warning information to a vehicle driver.
Optionally, the warning information includes at least one of the following modes: voice prompt, short message prompt and APP prompt.
In another aspect, the present invention also provides a vehicle battery management apparatus, the apparatus including:
the storage battery state information acquisition module: the system comprises a storage battery state information acquisition unit, a storage battery state information acquisition unit and a storage battery state information acquisition unit, wherein the storage battery state information acquisition unit is used for acquiring storage battery state information in real time and comprises a battery working value;
a variation trend acquisition module: the battery early warning module is used for acquiring the change trend of the battery working value when the battery working value is lower than the battery early warning value and higher than the battery working threshold value;
an abnormal power shortage judgment module: the device is used for judging whether the storage battery is in a normal power-shortage state or not when the working value of the battery is in a descending trend;
the first early warning module: the system is used for sending early warning information to a vehicle driver when the storage battery is in a normal power shortage state;
a first time acquisition module: the battery early warning device is used for acquiring the first time when the battery working value rises from a battery critical value to the battery early warning value when the battery working value is in a rising trend;
the second early warning module is used for sending early warning information to a vehicle driver when the first time is greater than a first preset time;
a second time acquisition module: the battery early warning device is used for obtaining a first time when the battery working value reaches a preset battery early warning value;
the third early warning module: and sending early warning information to the vehicle driver when the second time is greater than a second preset time.
Optionally, the battery operating value includes a battery voltage or a battery remaining capacity value.
In a third aspect, the present invention also provides a vehicle comprising a vehicle battery management apparatus as described above.
By adopting the technical scheme, the vehicle battery management method, the vehicle battery management device and the vehicle have the following beneficial effects:
1. according to the vehicle battery management method, the vehicle battery management device and the vehicle, the characteristics of the storage battery are fully considered, the condition of misinformation in the automatic recovery process is avoided, the accuracy and the efficiency of vehicle early warning are improved, and meanwhile the disturbance to a user is reduced.
2. According to the vehicle battery management method, the vehicle battery management device and the vehicle, when the vehicle has an intelligent power supply strategy, the intelligent power supply strategy is fully utilized, unnecessary early warning information is avoided, and the early warning accuracy is further improved.
3. According to the vehicle battery management method, the vehicle battery management device and the vehicle, various parameters can be selected for management of the storage battery in a power-deficient state, and the application range of storage battery management is widened.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can also be derived from them without inventive effort.
FIG. 1 is a flow chart of steps of a method of managing a vehicle battery according to the present invention;
FIG. 2 is a schematic diagram of a battery voltage state change in one embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating an abnormal insufficient state determination of a storage battery in an embodiment of the present disclosure;
FIG. 4 is a flow chart of a method of managing a vehicle battery according to the present invention;
FIG. 5 is a schematic diagram of a power supplementing strategy when the storage battery is in power shortage;
fig. 6 is a schematic diagram of a vehicle battery management apparatus described herein.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Example 1
In-vehicle electric appliances are generally powered by a 12V storage battery, as shown in a dotted frame in fig. 5, when the voltage of the 12V storage battery or other working parameters are too low, the vehicle cannot be started, and therefore, in actual work, the state of the 12V storage battery, such as voltage, SOC (percentage of remaining battery charge), and the like, needs to be detected to perform a series of preventive or remedial measures.
The common remedial measures are to avoid the condition that the voltage of the 12V storage battery is too low, and an intelligent power supply strategy is generally adopted. For a new energy automobile, a high-voltage battery intelligent power supply strategy can be adopted, and when the 12V storage battery is lower than a preset threshold value, the high-voltage battery automatically charges the storage battery. For a traditional fuel automobile, a 12V storage battery is charged by adding a 48V storage battery.
The mode of traditional car networking propelling movement early warning, it is less than preset threshold value (V1 voltage value at T1 moment in fig. 2) mainly to judge battery voltage value, then reminds the user that the whole car probably has insufficient voltage, needs the user to charge the 12V battery, can' T start the vehicle when avoiding using the car.
However, as an intelligent power supplementing strategy is added to many vehicles, namely, at the starting moment of the vehicles, the voltage reaches the position V1 corresponding to T5 in FIG. 2, and normal use is not affected. Therefore, the traditional power shortage early warning pushing mode can cause false alarm to a great extent, and brings unnecessary trouble to users. However, the intelligent power supply is generally performed under the condition of vehicle starting, or other conditions are attached, so that the power supply result still cannot meet the vehicle starting condition.
Some vehicles without intelligent power supply also have curves similar to those in fig. 2 due to the characteristics of the storage battery. When the voltage of the storage battery is reduced to V2, all the ECU of the whole vehicle enters a power-saving state (the power consumption is very low), and the voltage of the storage battery automatically rises.
Therefore, the embodiment of the specification provides a vehicle battery management method, which can truly judge the power shortage affecting the starting, so that a user can be timely and accurately reminded.
In order to better implement the accurate determination process, a specific embodiment of the vehicle battery management method of the present invention is described below, fig. 1 is a schematic flow chart of a vehicle battery management method provided by an embodiment of the present invention, and the present specification provides the method operation steps as described in the embodiment or the flow chart, but more or less operation steps may be included based on conventional or non-inventive labor. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of sequences, and does not represent a unique order of performance. In practice, the system or server product may be implemented in a sequential or parallel manner (e.g., parallel processor or multi-threaded environment) according to the embodiments or methods shown in the figures. Specifically, as shown in fig. 1, the method may include:
s101: acquiring storage battery state information in real time, wherein the storage battery state information comprises a battery working value;
the battery refers to a 12V battery of a vehicle, and can provide power to electrical devices in the vehicle, such as meters, lamps, voice media devices, and the like, and the battery state information may include an output voltage or a battery charge remaining value (SOC) of the battery, that is, the battery operating value may be the output voltage or the battery charge remaining value (SOC), and the battery state information may be obtained through a BMS (battery management system) controller or may be detected by an ECU controller, without limitation, and the battery voltage is discussed as the battery operating value.
S103: when the battery working value is lower than the battery early warning value and higher than a battery working threshold value, acquiring the variation trend of the battery working value;
as shown in fig. 2, which is a schematic diagram of voltage variation of a storage battery in an embodiment of the present specification, wherein V1 represents a battery warning value, which indicates a warning value of the storage battery in a normal operating state, that is, when the storage battery is lower than the battery warning value, which indicates that the storage battery is in a power-deficient operating state, a warning reminding operation may be performed, and a vehicle enters an unable-to-start state at any time; v0 represents a battery working threshold value which represents the lowest value of the normal working of the storage battery, namely when the voltage of the storage battery is lower than V0, all vehicle electrical appliances and the ECU in the vehicle enter a power saving mode and cannot work normally; the V2 represents the lowest value of the battery voltage, i.e. the turning point of the battery voltage rising, for example, in the normal 12V battery operation, the V1 may be selected to be 10.8V, the V0 may be 10V, the V2 may be 6.5V, etc., and may be flexibly set according to the actual operation.
As shown in fig. 2, the trend of the change of the battery voltage has a trend of decreasing and increasing, and the determination may be made according to the magnitude of the voltage values detected before and after, and in some other embodiments, the determination may be made by the following method:
s301: when the battery working value is lower than the battery early warning value and higher than the battery working threshold value, acquiring a target battery working value, wherein the target battery working value is obtained by calculation according to a preset time interval and the battery working value;
s303: and acquiring the variation trend of the battery working value according to the battery working value and the target battery working value.
When the battery working value is lower than the battery early warning value and higher than the battery working threshold value, the vehicle storage battery is in a power shortage state, but certain energy output is still performed, in this case, the early warning is generally performed at the time, in order to improve the accuracy of early warning, for example, when the voltage of the storage battery rises, the storage battery is in the power shortage state at the time, but the storage battery is also in a normal state along with the rise of the voltage, and therefore early warning is not easily performed at the time.
The preset time interval can be set according to the signal acquisition frequency, can also be set manually, and specifically can be set as 5min, wherein the target battery working value can represent the voltage of the storage battery detected before 5min, and the voltage variation trend can be obtained by comparing the voltage values of the storage battery detected at different time points.
It should be noted that the change trend of the voltage of the storage battery at this time is judged when the voltage value is between the battery early warning value and the battery working threshold value, so that the judgment accuracy can be improved, and unnecessary judgment processes can be reduced.
S105: when the working value of the battery is in a descending trend, judging whether the storage battery is in a normal power-shortage state;
s107: if yes, sending out early warning information to a vehicle driver;
in actual work, generally, when the voltage of the storage battery reaches a voltage early warning value, the default is the detection value in the descending process, and the early warning at the moment is a normal early warning process, so that the change trend of the voltage of the storage battery is determined firstly, and the early warning condition is met when the voltage of the storage battery descends.
Further, in the embodiment of the specification, when the electric energy of the storage battery is normally consumed by the electric appliance inside the vehicle, the output power consumption is relatively fixed, the small current consumption is generally output, the storage battery consumes real electricity, and the early warning can be performed when the electricity is insufficient under the condition.
In some other embodiments, as shown in fig. 3, the step S105 may further include:
s501: if the battery working value is in a descending trend, acquiring the time from the battery early warning value to the battery working value;
s503: calculating the change curvature of the battery working value according to the battery early warning value, the battery working value and the time from the battery early warning value to the battery working value;
s505: judging whether the change curvature of the battery working value is not greater than a preset change curvature or not according to the change curvature of the battery working value;
s507: and if so, the storage battery is in a normal power-shortage state.
As shown in fig. 2, when the detected voltage value is B (T20, V20), the curvature of the change of the battery voltage value at this time is a1 ═ V1-V20)/(T20-T1, and in the embodiment of the present specification, the calculated curvature is a positive value, and at this time, the calculated curvature corresponds to the slope of the curve in which the battery voltage is located.
Wherein the preset variation curvature includes a curvature of the battery warning value to the battery operation threshold variation. Illustratively, the preset change curvature is a0 ═ V1-V0)/(T2-T1, and when the battery is in a normal power consumption state, real power is consumed, so the voltage change curve approaches the preset change curve, that is, a1 ≦ a0, it indicates that the battery is in a normal power shortage state, that is, a low current power shortage, and there is no automatic voltage ramp-up stage in time of the battery, so at this time, a warning needs to be performed to remind the driver of the power shortage state, and the driver needs to charge in time.
In some other embodiments, as shown in fig. 2, the change curve of the battery voltage is a non-linear relationship, and for accurately measuring the change curvature of the battery voltage, the change curvature can be calculated by multiple-segment averaging, for example, a point V10 is selected between V1 and V20, the curvature between V1-V10 and V10-V20 is calculated, and the curvature closer to the true value is obtained by averaging.
In some other embodiments, when the variation curve of the battery voltage is close to a linear relationship, the preset variation curvature may further select a curvature of variation between the battery warning value and a battery critical value, i.e., (V1-V2)/(T3-T1).
Although the voltage change curves are different when different storage batteries work, the voltage change curves of the same storage battery are similar, and as shown in fig. 2, the voltage change curves are nonlinear curves (which can be understood as a near linear relation), when the storage battery is in an abnormal power-down state, namely, when a1 is greater than a0, the storage battery is in an abnormal power-down state, namely, a large current is insufficient, when the large current is insufficient, the storage battery consumes a virtual power, and when the voltage of the storage battery continuously drops to be lower than a voltage threshold value, the internal electric appliances of the vehicle are switched to a power-saving mode, the power consumption of the whole vehicle is reduced, and the voltage of the storage battery slowly rises.
It should be noted that, an intelligent power supply strategy is added to some vehicles, and when the voltage of a vehicle storage battery is lower than the working threshold of the storage battery, the vehicle configured with the intelligent power supply strategy can perform the power supply strategy, so that no matter the voltage of the vehicle storage battery automatically rises or depends on the intelligent power supply strategy, when the voltage of the vehicle storage battery rises and is between the battery warning value and the working threshold of the battery, early warning cannot be simply performed, and the conventional power shortage early warning push mode may cause false alarm to a great extent, which brings unnecessary trouble to users.
Therefore, when the voltage of the storage battery is in a rising stage, the efficiency and the stability of the voltage rising cannot be considered to maintain the normal operation of the subsequent storage battery. Specifically, in some other embodiments, the method may further include:
s109: when the battery working value is in a rising trend, acquiring first time when the battery working value rises from a battery critical value to the battery early warning value;
s1011: if the first time is greater than a first preset time, early warning information is sent to a vehicle driver;
s1013: if the first time is not more than a first preset time, acquiring a second time which lasts after the battery working value reaches the battery early warning value;
s1015: and if the second time is less than the second preset time, sending early warning information to a vehicle driver.
As shown in fig. 4, when the voltage of the battery is in a rising stage, it indicates that the voltage state of the battery gradually recovers, so that the voltage value becomes normal as time goes on although the voltage value is at a warning value, and in order to ensure the efficiency of recovering the voltage of the battery, whether the battery can affect the normal starting of the vehicle is judged by acquiring the speed of the voltage rising of the battery.
The process of obtaining the first time mainly comprises the following steps:
s1101: when the battery working value is in an ascending trend, acquiring the time of the storage battery in a battery critical value;
s1103: acquiring the time for the storage battery to reach the battery early warning value along with the rise of the battery working value;
s1105: and calculating the first time for obtaining the working value of the battery to rise from the critical value of the battery to the early warning value of the battery according to the time for the storage battery to be in the critical value of the battery and the time for the storage battery to reach the early warning value of the battery.
The first preset time refers to the time when the vehicle storage battery recovers to the storage battery early warning value, the time does not affect the normal starting of the vehicle, namely T5-T3 in FIG. 2, and the second preset time is the minimum time which can guarantee the normal starting of the vehicle and is kept after the vehicle recovers to the storage battery early warning value, namely T6-T5 in FIG. 2. It should be noted that the second preset time is a time for which the voltage of the vehicle battery continuously rises after recovering to the battery warning value.
In some other embodiments, in order to reduce energy consumption for multiple data extraction and improve processing efficiency, the first preset time may be a preset time between a battery operating threshold in a descending stage and a battery warning value in an ascending stage, i.e., T5-T2 in fig. 2, where the first time is a measured time between the battery operating threshold in the descending stage and the battery warning value in the ascending stage.
When the first time is longer than the first preset time, the voltage recovery speed of the vehicle storage battery is too low, the normal starting of the vehicle or the normal work of the electric appliances in the vehicle cannot be met, and the driver needs to be warned by early warning at the moment.
When first time is less than first preset time, but the second time is less than second preset time, it is qualified to show vehicle battery recovery efficiency, but stability is not enough, hardly satisfies the continuous work of the inside electrical apparatus of vehicle, consequently also need carry out the early warning and remind this moment.
The different early warning strategies are selected according to the change trend of the storage battery, when the storage battery voltage is in the descending trend, early warning prompt can be carried out when the storage battery voltage is in the low current insufficient voltage state, when the storage battery voltage is in the ascending trend, a proper early warning strategy can be selected according to the rising speed and the stability of the storage battery voltage, the early warning accuracy under the storage battery insufficient voltage state can be improved through the judgment mode, invalid interference to users is avoided, and the user experience is improved.
In some other embodiments, the obtaining the battery status information in real time further includes, after the battery status information includes the battery operating value:
and when the battery working value is lower than the battery working threshold value and lasts for a third preset time, sending early warning information to a vehicle driver.
When the storage battery is in low current and insufficient voltage, early warning can be carried out when the storage battery is lower than a battery early warning value, therefore, when the storage battery is in high current and insufficient voltage, the storage battery can raise the voltage according to an intelligent power supply strategy or an automatic voltage raising mechanism at the moment, but if the voltage raising speed of the storage battery is very low, prompt needs to be carried out in time, namely when the battery working value is lower than the battery working threshold value, and the third preset time is continued, early warning information is sent to a vehicle driver. It should be noted that, in the early warning of pushing under such a condition, the vehicle is already lack of power and cannot play an early warning role, but the driver can know the vehicle condition in advance so as to select a remedial measure in time, such as power supply replacement or manual charging.
It should be noted that the battery operating value is calculated by using the battery voltage as a parameter, and a battery remaining capacity value (SOS) can be selected as a parameter, so that the judgment accuracy is higher.
In this specification embodiment, the early warning mode can select the mode of car networking propelling movement early warning, like APP SMS propelling movement early warning, perhaps reminds the user to maintain the battery through mutual device in the car, and specific early warning mode and content are unrestricted, just do not need to have repeated once more.
On the basis of the vehicle battery management method provided above, embodiments of the present specification further provide a vehicle battery management apparatus, as shown in fig. 6, the apparatus includes:
a storage battery state information acquisition module: the system comprises a storage battery state information acquisition unit, a storage battery state information acquisition unit and a storage battery state information acquisition unit, wherein the storage battery state information acquisition unit is used for acquiring storage battery state information in real time and comprises a battery working value;
a variation trend acquisition module: the battery early warning device is used for acquiring the change trend of the battery working value when the battery working value is lower than the battery early warning value and higher than the battery working threshold value;
an abnormal power shortage judgment module: the battery management system is used for judging whether the storage battery is in a normal power-lack state or not when the working value of the battery is in a descending trend;
the first early warning module: the system is used for sending early warning information to a vehicle driver when the storage battery is in a normal power shortage state;
a first time acquisition module: the battery early warning device is used for acquiring the first time when the battery working value rises from a battery critical value to the battery early warning value when the battery working value is in a rising trend;
the second early warning module is used for sending early warning information to a vehicle driver when the first time is greater than a first preset time;
a second time acquisition module: the battery early warning device is used for obtaining a first time when the battery working value reaches a preset battery early warning value;
the third early warning module: and the early warning information is sent to the vehicle driver when the second time is greater than a second preset time.
On the basis of the device provided above, the embodiment of the present specification further provides a vehicle, and the vehicle is configured with the device provided above.
The vehicle battery management method, the vehicle battery management device and the vehicle have the following beneficial effects that:
1) according to the vehicle battery management method, the vehicle battery management device and the vehicle, the characteristics of the storage battery are fully considered, the condition of misinformation in the automatic recovery process is avoided, the accuracy and the efficiency of vehicle early warning are improved, and meanwhile the disturbance to a user is reduced.
2) According to the vehicle battery management method and device and the vehicle, when the vehicle has an intelligent power supply strategy, the intelligent power supply strategy is fully utilized, unnecessary early warning information is avoided, and the accuracy of early warning is further improved.
3) According to the vehicle battery management method, the vehicle battery management device and the vehicle, various parameters can be selected to manage the storage battery in a power-deficient state, and the application range of storage battery management is widened.
While the invention has been described with reference to specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the invention can be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A vehicle battery management method, characterized by comprising the steps of:
acquiring storage battery state information in real time, wherein the storage battery state information comprises a battery working value;
when the battery working value is lower than the battery early warning value and higher than a battery working threshold value, acquiring the variation trend of the battery working value;
when the battery working value is in a descending trend, judging whether the storage battery is in a normal power-lack state;
if yes, sending early warning information to a vehicle driver;
when the battery working value is in an ascending trend, acquiring first time when the battery working value is increased from a battery critical value to the battery early warning value;
if the first time is greater than a first preset time, early warning information is sent to a vehicle driver;
if the first time is not more than a first preset time, acquiring a second time which lasts after the battery working value reaches the battery early warning value;
and if the second time is less than the second preset time, sending early warning information to a vehicle driver.
2. The vehicle battery management method according to claim 1, wherein the battery operation value includes a battery voltage or a battery remaining capacity value.
3. The vehicle battery management method according to claim 1, wherein the acquiring the variation tendency of the battery operating value when the battery operating value is lower than the battery pre-warning value and higher than the battery operating threshold value includes:
when the battery working value is lower than the battery early warning value and higher than the battery working threshold value, acquiring a target battery working value, wherein the target battery working value is obtained by calculation according to a preset time interval and the battery working value;
and acquiring the variation trend of the battery working value according to the battery working value and the target battery working value.
4. The vehicle battery management method according to claim 1, wherein the determining whether the battery is in a normal insufficient state when the battery operation value is in a downward trend includes:
if the battery working value is in a descending trend, acquiring the time from the battery early warning value to the battery working value;
calculating the change curvature of the battery working value according to the battery early warning value, the battery working value and the time from the battery early warning value to the battery working value;
judging whether the change curvature of the battery working value is not greater than a preset change curvature or not according to the change curvature of the battery working value;
and if so, the storage battery is in a normal power-shortage state.
5. The vehicle battery management method according to claim 4, wherein the preset variation curvature includes a curvature of a variation of the battery warning value to the battery operation threshold value.
6. The vehicle battery management method according to claim 1, wherein the obtaining the first time when the battery operating value rises from a battery critical value to the battery warning value when the battery operating value is in a rising trend comprises:
when the battery working value is in an ascending trend, acquiring the time when the storage battery is in a battery critical value;
acquiring the time for the storage battery to reach the battery early warning value along with the rise of the battery working value;
and calculating first time for obtaining the battery working value to rise from the battery critical value to the battery early warning value according to the time for the storage battery to be in the battery critical value and the time for the storage battery to reach the battery early warning value.
7. The vehicle battery management method according to claim 1, wherein the obtaining of the battery state information in real time, the battery state information including a battery operating value further includes:
and when the battery working value is lower than the battery working threshold value and lasts for a third preset time, sending early warning information to a vehicle driver.
8. The vehicle battery management method according to any one of claims 1 to 7, wherein the warning information includes at least one of: voice prompt, short message prompt and APP prompt.
9. A vehicle battery management apparatus, characterized in that the apparatus comprises:
the storage battery state information acquisition module is used for acquiring storage battery state information in real time, and the storage battery state information comprises a battery working value;
the change trend acquisition module is used for acquiring the change trend of the battery working value when the battery working value is lower than the battery early warning value and higher than the battery working threshold value;
the abnormal power shortage judging module is used for judging whether the storage battery is in a normal power shortage state or not when the working value of the battery is in a descending trend;
the first early warning module is used for sending early warning information to a vehicle driver when the storage battery is in a normal power shortage state;
the first time acquisition module is used for acquiring first time when the battery working value rises from a battery critical value to the battery early warning value when the battery working value is in a rising trend;
the second early warning module is used for sending early warning information to a vehicle driver when the first time is longer than a first preset time;
the second time acquisition module is used for acquiring second time which lasts after the battery working value reaches the battery early warning value when the first time is not more than first preset time;
and the third early warning module is used for sending early warning information to the vehicle driver when the second time is greater than the second preset time.
10. A vehicle characterized by comprising a vehicle battery management apparatus according to claim 9.
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