CN112078427B - Charging monitoring method and device, electronic equipment and storage medium - Google Patents
Charging monitoring method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The application provides a charging monitoring method, a charging monitoring device, electronic equipment and a storage medium, wherein the method comprises the following steps: determining first heat generation quantity and battery temperature values of a target vehicle-mounted battery at different target moments according to charging information of the target vehicle-mounted battery in a charging process, which is acquired in real time; aiming at a target moment, determining the temperature change condition at the target moment according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment; and carrying out safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition. According to the method and the device, the temperature change condition at the target moment is determined according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment, the temperature change condition of the target vehicle-mounted battery at the target moment can be accurately determined, and the safety of the target vehicle-mounted battery can be accurately monitored.
Description
Technical Field
The present disclosure relates to the field of computer technologies, and in particular, to a charging monitoring method and apparatus, an electronic device, and a storage medium.
Background
Electric vehicles or electric bicycles currently in use typically rely on an on-board battery to power them. The electric vehicle is fast in breaking and easy to have potential safety hazards, and particularly relates to a vehicle-mounted battery of the electric vehicle.
When an electrochemical reaction occurs inside a vehicle-mounted battery of an electric vehicle, the battery temperature is easily affected, and there is a risk that the battery temperature changes abnormally. However, since the battery temperature change condition of the electric vehicle cannot be accurately monitored at present, the battery temperature of the electric vehicle is difficult to detect when abnormal change occurs, safety accidents are easy to occur, and casualties and property loss are caused. Therefore, the monitoring of the battery temperature of the electric vehicle is of great significance.
Disclosure of Invention
In view of the above, an object of the present application is to provide a charging monitoring method, a charging monitoring apparatus, an electronic device, and a storage medium, so as to accurately monitor a temperature variation condition of a vehicle-mounted battery.
In a first aspect, an embodiment of the present application provides a charging monitoring method, including:
determining first heat generation quantity and battery temperature values of a target vehicle-mounted battery at different target moments according to charging information of the target vehicle-mounted battery in a charging process, which is acquired in real time; at a target moment, the battery temperature of the target vehicle-mounted battery is in an unstable state;
aiming at a target moment, determining the temperature change condition at the target moment according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment; the heat dissipation capacity is the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state; the target vehicle-mounted battery is a vehicle-mounted battery under a target type;
and carrying out safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition.
With reference to the first aspect, the present embodiments provide a first possible implementation manner of the first aspect, where the heat dissipation amount is determined according to a second heat generation amount of the vehicle-mounted battery in the target type when the battery temperature is in a stable state; the second heat generation amount is determined based on the charging information that the target on-vehicle battery is in a steady state at the battery temperature.
With reference to the first aspect, an embodiment of the present application provides a second possible implementation manner of the first aspect, where before determining, according to charging information of a target vehicle-mounted battery in a charging process, first heat generation amounts and temperature values of the target vehicle-mounted battery at different target times, the method further includes:
and acquiring charging information in real time from a charging pile used by the target vehicle-mounted battery in the charging process, and/or acquiring charging information in real time from an electric vehicle where the target vehicle-mounted battery is located in the charging process.
With reference to the first aspect, an embodiment of the present application provides a third possible implementation manner of the first aspect, where, for a target time, determining a temperature change condition at the target time according to a first heat generation amount at the target time and a heat dissipation amount corresponding to a battery temperature value at the target time includes:
respectively calculating heat generation power and heat dissipation power at a target moment according to a first heat generation quantity at the target moment and a heat dissipation quantity corresponding to a battery temperature value at the target moment;
and aiming at the target moment, calculating the temperature change condition of the target vehicle-mounted battery according to the heat generation power and the heat dissipation power at the target moment.
With reference to the first aspect, an embodiment of the present application provides a fourth possible implementation manner of the first aspect, where the charging information includes an open-circuit voltage, a battery operating current, a charging time, and battery temperature values at different charging times.
With reference to the first aspect, an embodiment of the present application provides a fifth possible implementation manner of the first aspect, where the performing safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature variation includes:
judging whether the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value or not; the standard temperature change value is a temperature change value of a safety target vehicle-mounted battery;
and if the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value, sending alarm information.
In a second aspect, an embodiment of the present application further provides a charge monitoring device, including:
the first determining module is used for determining first heat generation quantity and battery temperature values of the target vehicle-mounted battery at different target moments according to charging information of the target vehicle-mounted battery in a charging process, which is acquired in real time; at a target moment, the battery temperature of the target vehicle-mounted battery is in an unstable state;
the second determining module is used for determining the temperature change condition at the target moment according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment; the heat dissipation capacity is the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state; the target vehicle-mounted battery is a vehicle-mounted battery under a target type;
and the monitoring module is used for carrying out safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition.
In a third aspect, an embodiment of the present application further provides an electronic device, including: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating via the bus when the electronic device is running, the machine-readable instructions when executed by the processor performing the steps of the first aspect described above, or any possible implementation of the first aspect.
In a fourth aspect, this application further provides a storage medium, where a computer program is stored, and the computer program is executed by a processor to perform the steps in the first aspect or any one of the possible implementation manners of the first aspect.
According to the charging monitoring method provided by the embodiment of the application, first heat generation quantity and battery temperature values of a target vehicle-mounted battery at different target moments are determined according to charging information of the target vehicle-mounted battery in a charging process, wherein the charging information is acquired in real time; at the target moment, the battery temperature of the target vehicle-mounted battery is in an unstable state; then, aiming at a target moment, determining the temperature change condition at the target moment according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment; the heat dissipation capacity is the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state; the target on-board battery is an on-board battery of the target type; and finally, carrying out safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition. The temperature change condition under the target moment is determined according to the first heat generation quantity under the target moment and the heat dissipation quantity corresponding to the battery temperature value under the target moment, the temperature change condition of the target vehicle-mounted battery under the target moment can be accurately determined, and compared with a mode of monitoring the battery temperature of the electric vehicle through temperature measurement in the prior art, the method and the device can accurately monitor the safety of the target vehicle-mounted battery.
According to the charging monitoring method, the heat dissipation amount corresponding to the battery temperature value at the target moment is determined according to the second heat generation amount of the vehicle-mounted battery under the target type when the battery temperature is in the stable state, so that the temperature change condition of the target vehicle-mounted battery under the target moment can be accurately determined, and the safety of the target vehicle-mounted battery is accurately monitored.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a flowchart illustrating a charging monitoring method according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating another charging monitoring method provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram illustrating a charge monitoring device according to an embodiment of the present application;
fig. 4 shows a schematic structural diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a charging monitoring method and device, an electronic device and a storage medium, which are described below through embodiments.
For the convenience of understanding the present embodiment, a detailed description will be given to a charging monitoring method disclosed in the embodiments of the present application. As shown in fig. 1, a flowchart of a charging monitoring method includes the following steps:
s101: determining first heat generation quantity and battery temperature values of a target vehicle-mounted battery at different target moments according to charging information of the target vehicle-mounted battery in a charging process, which is acquired in real time; at the target moment, the battery temperature of the target vehicle-mounted battery is in an unstable state;
s102: aiming at a target moment, determining the temperature change condition at the target moment according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment; the heat dissipation capacity is the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state; the target on-board battery is an on-board battery of the target type;
s103: and carrying out safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition.
In step S101, the target on-board battery may be a battery, such as a lithium battery, in an electric car or an electric bicycle or other electric vehicles. The target vehicle-mounted battery is a rechargeable battery, and can provide power for the electric vehicle where the target vehicle-mounted battery is located in the case of power, and can be charged in the case of no power.
The target vehicle-mounted battery can comprise a stage that the battery temperature is in a stable state and a stage that the battery temperature is in an unstable state in the charging process. The stage that the battery temperature is in a stable state refers to a stage that the battery temperature hardly changes, namely the battery temperature is basically kept constant, and the stage mainly occurs at the later stage of charging, namely the stage that the charging is about to be completed; the unstable state of the battery temperature refers to a state in which the battery temperature changes, and the battery temperature may rise or fall, and this stage mainly occurs in the early stage of charging.
Considering that when the battery temperature is in the steady state stage, the battery temperature does not have a relatively large temperature change, and the influence on the battery is small, here, we mainly study the temperature change condition that the battery temperature of the target vehicle-mounted battery is in the non-steady state, and therefore the target time selected by us is the time when the battery temperature of the target vehicle-mounted battery is in the non-steady state, that is, the battery temperature of the target vehicle-mounted battery is in the non-steady state at the target time.
The charging information may be acquired in real time from a charging pile that charges the target vehicle-mounted battery, or may be acquired in real time from an electric vehicle in which the target vehicle-mounted battery is located, and therefore before step S101, the embodiment of the present application may further include: and acquiring charging information in real time from a charging pile used by the target vehicle-mounted battery in the charging process, and/or acquiring charging information in real time from an electric vehicle where the target vehicle-mounted battery is located in the charging process.
In a specific implementation process, a time interval of uploading the charging information by the charging pile relative to the electric vehicle where the target vehicle-mounted battery is located may be relatively long, for example, the charging pile may upload the charging information of the target vehicle-mounted battery once at a time interval of 30 seconds, and the electric vehicle where the target vehicle-mounted battery is located may upload the charging information of the target vehicle-mounted battery once at a time interval of 10 seconds. Therefore, in practical situations, the mode for acquiring the charging information of the target vehicle-mounted battery in the charging process can be selected according to the data pending amount and the data processing efficiency.
In consideration of the fact that the acquired charging information is huge and complex, and phenomena of data errors, data repetition, null values and data loss may exist, before the first heat generation amount and the temperature value of the target vehicle-mounted battery at different target moments are determined, the acquired charging information can be re-cleaned to delete repeated information and correct error information, and specifically, programming software such as Python can be used for cleaning the charging information to obtain available charging information. The charging information mentioned in the charging monitoring method provided by the embodiment of the application is the charging information after cleaning.
The charging information may include open circuit voltage, battery operating current, charging time, and battery temperature at various times.
Specifically, open circuit voltage refers to the voltage measured when not connected to a load; the battery working voltage refers to the voltage of the battery in the charging process; the battery operating current refers to the current of the battery during charging.
The first heat generation amount may be calculated according to an open-circuit voltage, a battery operating voltage, and an electric charge operating current in the charge information, and specifically, when the first heat generation amount at different target times is calculated, the first heat generation amount may be calculated according to the following formula:
wherein Q is1A first heat generation amount; e is an open circuit voltage; u is the working voltage of the battery; i is the working current of the battery; t is the battery temperature at different target moments;
is the variation of the battery voltage with the battery temperature. In the detailed description
When the current is small and large, the above formula can be simplified to Q1＝I(E-U)。
In step S102, it is considered that the battery temperature does not substantially change when the battery temperature is in a steady state, and therefore it can be considered that the heat generation amount and the heat dissipation amount of the target vehicle-mounted battery are equal in this state.
Therefore, in one possible embodiment, the heat dissipation amount may be determined according to the second heat generation amount of the vehicle-mounted battery in the target type at the state where the battery temperature is stable; the second heat generation amount may be determined based on the charging information that the target on-vehicle battery is in a steady state at the battery temperature.
It should be noted here that the target vehicle-mounted battery in the embodiment of the present application refers to a vehicle-mounted battery in a target type, that is, the types of the target vehicle-mounted batteries are all the same.
The second heat generation amount may be determined based on the charging information that the other target vehicle-mounted battery under the target type is in a stable state at the battery temperature. Therefore, the charging information of other target vehicle-mounted batteries in a stable state at the battery temperature can be historical charging information, for example, historical charging information of target vehicle-mounted batteries in the last 3 months is acquired from the charging pile.
In a specific implementation process, a second heat generation amount of the target vehicle-mounted battery in a stable state at the battery temperature can be calculated according to the acquired historical charging information. The process of calculating the second heat generation amount is the same as the process of calculating the first heat generation amount, and will not be described herein.
After the second heat production amount is calculated, the second heat production amount may be calculated according to the formula: q2＝Q3Calculating to obtain the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state, wherein Q2A second heat generation amount; q3The heat dissipation amount is.
It should be noted that, in an actual situation, there may be a plurality of stable states of the battery temperature during the entire charging process of the target on-board battery, and there may be only one stable state, and the battery temperature may be different or the same in different stable states, so that the heat dissipation amount calculated at different battery temperatures may be obtained by calculating a large amount of heat dissipation amounts of other target on-board batteries when the battery temperature is in the stable state.
Since the temperature values of the target on-vehicle battery at different target times have been determined in step S101, the heat dissipation amount at the battery temperature value can be determined for the battery temperature value at the target time.
When the first heat generation amount of the target vehicle-mounted battery at the target time and the heat dissipation amount at the target time are determined, the heat generation power and the heat dissipation power may be calculated, and the calculation may be specifically performed according to another charging monitoring method shown in fig. 2:
s1021: respectively calculating heat generation power and heat dissipation power at a target moment according to a first heat generation quantity at the target moment and a heat dissipation quantity corresponding to a battery temperature value at the target moment;
s1022: and aiming at the target moment, calculating the temperature change condition of the target vehicle-mounted battery according to the heat generation power and the heat dissipation power at the target moment.
In step S1021, when calculating the heat generating power, the formula can be used
Calculation of where W1Power for generating heat; q1A first heat generation amount; t is t1Is a first target time; t is t2Is the second target time.
When calculating the heat dissipation power, the formula can be used
Calculation of where W2For heat dissipation power; q3The heat dissipation capacity is; t is t1Is a first target time; t is t2Is the second target time.
The first target time may refer to any target time before the second target time. The first target moment should be the same and the second target moment should be the same when calculating the heat generating power and the heat dissipating power. In the embodiment of the present application, in order to implement real-time monitoring on the target vehicle battery, the second target time may be a current time, and the first target time may be a previous time.
In step S1022, the temperature change condition may refer to a battery temperature change value from the first target time to the second target time. When calculating the temperature variation value of the target on-board battery, it is possible to calculate the temperature variation value according to the formula W1-W2Calculation is made cm Δ t. Wherein, W1Power for generating heat; w2For heat dissipation power; c is the specific heat capacity of the vehicle-mounted battery; m is the vehicle-mounted battery mass; Δ t is a temperature change value。
In practical cases, for the same type of vehicle-mounted battery, both the vehicle-mounted battery specific heat capacity and the vehicle-mounted battery mass are fixed values, and therefore can be considered as constants, denoted by k, that is, the above formula for calculating the temperature change value of the target vehicle-mounted battery can be written as: w1-W2K Δ t, where k is c m. The value of k may be determined according to the type of the vehicle-mounted battery.
Therefore, according to the formula, the temperature change value delta t of the target vehicle-mounted battery can be calculated, and when the delta t is larger than zero, the target vehicle-mounted battery is in a temperature rising state in the charging process; when delta t is less than zero, the target vehicle-mounted battery is in a temperature reduction state in the charging process; when Δ t is less than zero, it is indicated that the target on-board battery is in a temperature-unchanged state during charging.
According to practical situations, during charging, when the temperature of the target vehicle-mounted battery generally rises or falls, the target vehicle-mounted battery may be in an early stage of charging, and when the temperature of the target vehicle-mounted battery rises or falls, the target vehicle-mounted battery may be in an early stage of charging; when the target on-vehicle battery temperature is constant, the target on-vehicle battery may be in a late stage of charging.
In step S103, when we monitor the safety of the target vehicle-mounted battery in the early stage of charging, it can be determined whether the difference between the temperature change condition and the standard temperature change condition exceeds the preset threshold value according to the comparison between the temperature change value calculated in step S102 and the standard temperature change value.
When the difference value between the calculated temperature change value and the standard temperature change value exceeds a preset threshold value, the calculated temperature change value can be determined to exceed the range of the standard temperature change value, the temperature change of the target vehicle-mounted battery is abnormal change, the target vehicle-mounted battery possibly has safety implication at the moment, and warning information can be sent out in advance so as to adopt early warning measures for the target vehicle-mounted battery in the charging process. The standard temperature change value may refer to a temperature change value of a safety target vehicle-mounted battery, that is, a temperature change value of a target vehicle-mounted battery without potential safety hazard.
The temperature change condition of the target vehicle-mounted battery at the target moment is calculated after the charging information obtained in real time from the charging pile used by the target vehicle-mounted battery is obtained, the root mean square error calculation is carried out on the temperature change condition of the target vehicle-mounted battery at the target moment after the charging information obtained in real time from the electric vehicle where the target vehicle-mounted battery is located is carried out, the error of the temperature change condition can be obtained to be about 1.3 ℃, and the temperature data precision of the electric vehicle and the charging pile end is about +/-1 ℃, so that the temperature change condition of the target vehicle-mounted battery at the target moment calculated by the method provided by the embodiment of the application is credible.
According to the charging monitoring method provided by the embodiment of the application, the temperature change condition at the target moment is determined according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment, the temperature change condition of the target vehicle-mounted battery at the target moment can be accurately determined, and compared with the mode that the battery temperature of the electric vehicle is monitored through temperature measurement in the prior art, the method can be used for accurately monitoring the safety of the target vehicle-mounted battery.
Based on the same technical concept, embodiments of the present application further provide a charging monitoring apparatus, an electronic device, a computer-readable storage medium, and the like, which can be seen in the following embodiments.
Fig. 3 is a block diagram illustrating a charging monitoring apparatus according to some embodiments of the present application, which implements functions corresponding to the above-described steps of performing the charging monitoring method on the terminal device. The apparatus may be understood as a component of a server including a processor, which is capable of implementing the above-mentioned charge monitoring method, as shown in fig. 3, the charge monitoring apparatus may include:
the first determining module 301 is configured to determine first heat generation amounts and battery temperature values of a target vehicle-mounted battery at different target moments according to charging information of the target vehicle-mounted battery obtained in real time in a charging process; at a target moment, the battery temperature of the target vehicle-mounted battery is in an unstable state;
a second determining module 302, configured to determine, for a target time, a temperature change condition at the target time according to a first heat generation amount at the target time and a heat dissipation amount corresponding to a battery temperature value at the target time; the heat dissipation capacity is the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state; the target vehicle-mounted battery is a vehicle-mounted battery under a target type;
and the monitoring module 303 is configured to perform safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition.
In one possible embodiment, the heat dissipation amount is determined in accordance with a second heat generation amount of the vehicle-mounted battery in the target type at a state where the battery temperature is stable; the second heat generation amount is determined based on the charging information that the target on-vehicle battery is in a steady state at the battery temperature.
In a possible embodiment, the charge monitoring device may further include: the acquisition module is used for acquiring charging information in real time from a charging pile used by the target vehicle-mounted battery in the charging process and/or acquiring charging information in real time from an electric vehicle where the target vehicle-mounted battery is located in the charging process.
In one possible implementation, the second determining module 302 includes:
the first calculation module is used for respectively calculating heat generation power and heat dissipation power at a target moment according to a first heat generation amount at the target moment and heat dissipation amount corresponding to a battery temperature value at the target moment;
and the second calculation module is used for calculating the temperature change condition of the target vehicle-mounted battery according to the heat generation power and the heat dissipation power at the target moment.
In one possible embodiment, the charging information includes an open circuit voltage, a battery operating current, a charging time, and battery temperature values at different charging times.
In a possible implementation, the monitoring module 303 includes:
the judging module is used for judging whether the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value or not; the standard temperature change value is a temperature change value of a safety target vehicle-mounted battery;
and the sending module is used for sending alarm information if the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value.
As shown in fig. 4, which is a schematic structural diagram of an electronic device 400 provided in an embodiment of the present application, the electronic device 400 includes: at least one processor 401, at least one network interface 404 and at least one user interface 403, memory 405, at least one communication bus 402. A communication bus 402 is used to enable connective communication between these components. The user interface 403 includes a display (e.g., a touch screen), a keyboard, or a pointing device (e.g., a touch pad or touch screen, etc.).
In some embodiments, memory 405 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:
an operating system 4051, which contains various system programs, for implementing various basic services and processing hardware-based tasks;
the application 4052 includes various applications for implementing various application services.
In an embodiment of the present application, processor 401, by invoking programs or instructions stored by memory 405, is configured to:
determining first heat generation quantity and battery temperature values of a target vehicle-mounted battery at different target moments according to charging information of the target vehicle-mounted battery in a charging process, which is acquired in real time; at a target moment, the battery temperature of the target vehicle-mounted battery is in an unstable state;
aiming at a target moment, determining the temperature change condition at the target moment according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment; the heat dissipation capacity is the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state; the target vehicle-mounted battery is a vehicle-mounted battery under a target type;
and carrying out safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition.
In one possible embodiment, the heat dissipation amount is determined in accordance with a second heat generation amount of the vehicle-mounted battery in the target type at a state where the battery temperature is stable; the second heat generation amount is determined based on the charging information that the target on-vehicle battery is in a steady state at the battery temperature.
In a possible implementation manner, before the processor 401 executes the step of determining the first heat generation amount and the temperature value of the target on-board battery at different target time according to the charging information of the target on-board battery during the charging process, which is acquired in real time, the processor is further configured to:
and acquiring charging information in real time from a charging pile used by the target vehicle-mounted battery in the charging process, and/or acquiring charging information in real time from an electric vehicle where the target vehicle-mounted battery is located in the charging process.
In a possible implementation manner, when the processor 401 determines, for a target time, a temperature change condition at the target time according to the first heat generation amount at the target time and the heat dissipation amount corresponding to the battery temperature value at the target time, specifically: respectively calculating heat generation power and heat dissipation power at a target moment according to a first heat generation quantity at the target moment and a heat dissipation quantity corresponding to a battery temperature value at the target moment;
and aiming at the target moment, calculating the temperature change condition of the target vehicle-mounted battery according to the heat generation power and the heat dissipation power at the target moment.
In one possible embodiment, the charging information includes an open circuit voltage, a battery operating current, a charging time, and battery temperature values at different charging times.
In a possible implementation manner, the processor 401, when executing the step of performing safety monitoring on the target on-board battery during charging according to a temperature variation condition, is specifically configured to:
judging whether the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value or not; the standard temperature change value is a temperature change value of a safety target vehicle-mounted battery;
and if the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value, sending alarm information.
The computer program product for performing the charging monitoring method provided in the embodiment of the present application includes a computer-readable storage medium storing a nonvolatile program code executable by a processor, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, which is not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (12)
1. A charge monitoring method, comprising:
determining first heat generation quantity and battery temperature values of a target vehicle-mounted battery at different target moments according to charging information of the target vehicle-mounted battery in a charging process, which is acquired in real time; at a target moment, the battery temperature of the target vehicle-mounted battery is in an unstable state; wherein the charging information comprises the battery temperature value;
aiming at a target moment, determining the temperature change condition at the target moment according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment; the heat dissipation capacity is the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state, and is determined according to a second heat generation capacity of the vehicle-mounted battery under the target type when the battery temperature is in the stable state; the second heat generation amount is determined according to charging information that the target vehicle-mounted battery is in a stable state at the battery temperature; the target vehicle-mounted battery is a vehicle-mounted battery under a target type;
and carrying out safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition.
2. The charge monitoring method according to claim 1, before determining the first heat generation amount and the battery temperature value of the target vehicle-mounted battery at different target moments according to the charge information of the target vehicle-mounted battery in the charging process, which is acquired in real time, further comprising:
and acquiring charging information in real time from a charging pile used by the target vehicle-mounted battery in the charging process, and/or acquiring charging information in real time from an electric vehicle where the target vehicle-mounted battery is located in the charging process.
3. The charging monitoring method according to claim 1, wherein the determining, for the target time, a temperature change condition at the target time according to the first heat generation amount at the target time and the heat dissipation amount corresponding to the battery temperature value at the target time includes:
respectively calculating heat generation power and heat dissipation power at a target moment according to a first heat generation quantity at the target moment and a heat dissipation quantity corresponding to a battery temperature value at the target moment;
and aiming at the target moment, calculating the temperature change condition of the target vehicle-mounted battery according to the heat generation power and the heat dissipation power at the target moment.
4. The charge monitoring method of claim 1, wherein the charging information comprises open circuit voltage, battery operating current, charging time, and battery temperature values at different charging times.
5. The charging monitoring method according to claim 1, wherein the safety monitoring of the target vehicle-mounted battery in the charging process according to the temperature change condition comprises:
judging whether the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value or not; the standard temperature change condition is a temperature change value of a safety target vehicle-mounted battery;
and if the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value, sending alarm information.
6. A charge monitoring device, comprising:
the first determining module is used for determining first heat generation quantity and battery temperature values of the target vehicle-mounted battery at different target moments according to charging information of the target vehicle-mounted battery in a charging process, which is acquired in real time; at a target moment, the battery temperature of the target vehicle-mounted battery is in an unstable state; wherein the charging information comprises the battery temperature value;
the second determining module is used for determining the temperature change condition at the target moment according to the first heat generation quantity at the target moment and the heat dissipation quantity corresponding to the battery temperature value at the target moment; the heat dissipation capacity is the heat dissipation capacity of the vehicle-mounted battery under the target type when the battery temperature is in a stable state, and is determined according to a second heat generation capacity of the vehicle-mounted battery under the target type when the battery temperature is in the stable state; the second heat generation amount is determined according to charging information that the target vehicle-mounted battery is in a stable state at the battery temperature; the target vehicle-mounted battery is a vehicle-mounted battery under a target type;
and the monitoring module is used for carrying out safety monitoring on the target vehicle-mounted battery in the charging process according to the temperature change condition.
7. The charge monitoring device of claim 6, further comprising:
the acquisition module is used for acquiring charging information in real time from a charging pile used by the target vehicle-mounted battery in the charging process and/or acquiring charging information in real time from an electric vehicle where the target vehicle-mounted battery is located in the charging process.
8. The charge monitoring device of claim 6, wherein the second determining module comprises:
the first calculation module is used for respectively calculating heat generation power and heat dissipation power at a target moment according to a first heat generation amount at the target moment and heat dissipation amount corresponding to a battery temperature value at the target moment;
and the second calculation module is used for calculating the temperature change condition of the target vehicle-mounted battery according to the heat generation power and the heat dissipation power at the target moment.
9. The charge monitoring device of claim 6, wherein the charging information comprises open circuit voltage, battery operating current, charging time, and battery temperature values at different charging times.
10. The charge monitoring device of claim 6, wherein the monitoring module comprises:
the judging module is used for judging whether the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value or not; the standard temperature change condition is a temperature change value of a safety target vehicle-mounted battery;
and the sending module is used for sending alarm information if the difference value between the temperature change condition and the standard temperature change condition exceeds a preset threshold value.
11. An electronic device, comprising: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating over the bus when the electronic device is operating, the machine-readable instructions when executed by the processor performing the steps of the charge monitoring method of any one of claims 1 to 5.
12. A storage medium, characterized in that the storage medium has stored thereon a computer program which, when being executed by a processor, performs the steps of the charge monitoring method according to any one of claims 1 to 5.
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| CN115626062B (en) * | 2022-12-21 | 2023-08-04 | 中汽研汽车检验中心（天津）有限公司 | Battery pack temperature early warning method and system based on battery pack thermal management system modeling |
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