CN113978311A - Battery temperature correction method and device and electronic equipment - Google Patents

Battery temperature correction method and device and electronic equipment Download PDF

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Publication number
CN113978311A
CN113978311A CN202111201095.XA CN202111201095A CN113978311A CN 113978311 A CN113978311 A CN 113978311A CN 202111201095 A CN202111201095 A CN 202111201095A CN 113978311 A CN113978311 A CN 113978311A
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temperature
battery
temperature value
value
temperature correction
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CN113978311B (en
Inventor
许成林
王德军
于洪峰
孙君令
毕国栋
齐华岳
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Weichai Power Co Ltd
Weifang Weichai Power Technology Co Ltd
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Weichai Power Co Ltd
Weifang Weichai Power Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The application provides a battery temperature correction method, a battery temperature correction device and electronic equipment. According to the method, the corresponding temperature correction quantity can be adjusted according to different running states of the battery, so that the temperature of the battery can be accurately corrected under different working conditions, and the current actual temperature of the battery can be accurately determined.

Description

Battery temperature correction method and device and electronic equipment
Technical Field
The present disclosure relates to the field of temperature detection technologies, and in particular, to a method and an apparatus for correcting a battery temperature, and an electronic device.
Background
At present, new energy automobiles are developed in a large scale, and compared with other types of batteries such as lead-acid batteries and the like, lithium ion batteries have the advantages of high energy density, high voltage platform, one-level higher service life and the like, and have become the preferred energy storage device of new energy automobiles. However, the safety, cost and cycle performance of the lithium ion battery always restrict the market competitiveness of new energy automobiles.
The influence of temperature on the performance and safety of lithium ion batteries has been paid attention to by people. The optimum working temperature range of the lithium ion battery is 20-50 ℃, and the cycle life of the battery is reduced by 50% compared with the nominal cycle life when the working temperature is increased by 10 ℃ compared with the nominal temperature. On the one hand, higher operating temperatures can lead to thermal runaway of lithium ion batteries, causing risks such as fire and even explosion. On the other hand, lower temperatures can reduce the usable energy and power density of the battery. Therefore, it is important to know the temperature of the power lithium ion battery in real time.
The real-time accurate collection of Battery monomer Temperature is crucial to BMS (Battery Management System), therefore it is NTC (Negative Temperature Coefficient) sensor to use to Battery monomer's Temperature collection at present, but the influence of NTC sensor self material and a great deal of inevitable resistance factor, the inefficacy condition can be produced to inevitable, along with electric automobile's requirement to the performance improves day by day, various heavy currents, quick charge-discharge service behavior increases, NTC sensor collection Battery Temperature is limited by lithium ion Battery charge-discharge state and the influence of heat dissipation condition again, the single accurate Temperature of each lithium ion Battery of reaction that often can not be accurate.
Disclosure of Invention
The application provides a temperature correction method, a temperature correction device and electronic equipment, which are used for performing accurate temperature correction compensation respectively in battery charging and battery discharging states.
In a first aspect, an embodiment of the present application provides a battery temperature correction method, where the method includes:
when the current temperature value of the battery is acquired, determining the current running state of the battery, wherein the running state is the battery charging state or the battery discharging state;
determining a temperature correction amount corresponding to the operating state;
and carrying out temperature correction on the current temperature value according to the temperature correction quantity to obtain the actual temperature of the battery.
According to the method, firstly, the temperature correction quantity is determined according to the running state of the battery, the running state is the charging state or the discharging state of the battery, the temperature correction quantity corresponding to each state is different, and finally, the collected current temperature value is corrected according to the temperature correction quantity. According to the method, the corresponding temperature correction quantity can be adjusted according to different running states of the battery, so that the temperature of the battery can be accurately corrected under different working conditions, and the current actual temperature of the battery can be accurately determined.
In one possible design, prior to determining the current operating state of the battery, the method further includes:
acquiring a first average temperature value of historical acquisition temperature of the battery in a charging state, and acquiring second average temperature values of a plurality of batteries adjacent to the battery;
obtaining a temperature correction quantity in a charging state according to the first average temperature value, the second average temperature value and a reference temperature value; and
acquiring a third average temperature value of historical acquisition temperature of the battery in a discharging state, and acquiring fourth average temperature values of a plurality of batteries adjacent to the battery;
and obtaining the temperature correction amount in the discharging state according to the third average temperature value, the fourth average temperature value and the reference temperature value.
In one possible design, obtaining the temperature correction amount of the state of charge according to the first average temperature value, the second average temperature value, and a reference temperature value includes:
taking an average value of a difference between the first average temperature value and the reference temperature value as a first charging temperature correction amount;
taking an average value of a difference between the second average temperature value and the reference temperature value as a second charging temperature correction amount;
and taking the sum of the first charging temperature correction amount and the second charging temperature correction amount as a temperature correction amount under the charging state of the battery.
In one possible design, obtaining a temperature correction amount in a discharge state according to the third average temperature value, the fourth average temperature value, and a reference temperature value includes:
taking an average value of a difference between the third average temperature value and the reference temperature value as a first discharge temperature correction amount;
taking the average value of the difference between the fourth average temperature value and the reference temperature value as a second discharge temperature correction amount;
and setting the sum of the first discharge temperature correction amount and the second discharge temperature correction amount as a temperature correction amount in a battery charging state.
In one possible design, before obtaining a first average temperature value of the historical collected temperatures of the battery in the state of charge, the method further includes:
detecting whether a temperature sensor corresponding to the battery has a fault;
if so, taking a temperature value acquired by the temperature sensor at a moment before the fault as a reference temperature value;
if not, taking the temperature value currently acquired by the temperature sensor as a reference temperature value.
In one possible design, the temperature correcting the current temperature value according to the temperature correction amount to obtain the actual temperature of the battery includes:
determining a temperature correction coefficient corresponding to the battery according to the state parameter of the battery, wherein the state parameter at least comprises the service time of the battery;
and acquiring a product result between the temperature correction amount and the temperature correction coefficient, and taking the sum of the product result and the current temperature as the actual temperature of the battery.
In one possible design, after obtaining the actual temperature of the battery, the method further comprises:
and storing the actual temperature of the battery into a historical database corresponding to the running state.
In a second aspect, an embodiment of the present application provides a battery temperature correction apparatus, including:
the device comprises a determining unit, a judging unit and a judging unit, wherein the determining unit is used for determining the current running state of a battery when the current temperature value of the battery is acquired, and the running state is the battery charging state or the battery discharging state;
a temperature correction unit for determining a temperature correction amount corresponding to the operation state; and carrying out temperature correction on the current temperature value according to the temperature correction quantity to obtain the actual temperature of the battery.
In a third aspect, an embodiment of the present application provides an electronic device, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the battery temperature correction method when executing the computer program stored in the memory.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the battery temperature correction method described above.
For each of the second to fourth aspects and possible technical effects of each aspect, please refer to the above description of the first aspect or the possible technical effects of each of the possible solutions in the first aspect, and no repeated description is given here.
Drawings
FIG. 1 is a physical block diagram of the present battery temperature acquisition provided herein;
FIG. 2 is a flow chart of a battery temperature correction method provided herein;
fig. 3 is a schematic structural diagram of a battery temperature correction apparatus provided in the present application;
fig. 4 is a schematic structural diagram of an electronic device provided in the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments. It should be noted that "a plurality" is understood as "at least two" in the description of the present application. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. A is connected with B and can represent: a and B are directly connected and A and B are connected through C. In addition, in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not intended to indicate or imply relative importance nor order to be construed.
At present, to the battery temperature measurement among the new energy automobile, mainly still directly adopt the mode that the NTC sensor gathered, the NTC sensor has good measurement accuracy, be the physical structure picture of current battery temperature collection as shown in FIG. 1, because the battery is the matrix structure that a monomer constitutes, consequently the NTC sensor also will be arranged for the matrix structure, as shown in FIG. 1, NTC 1-1 to NTC 1-N are the monomer figure that battery package module one contains, the total N module of battery package. Through the structure shown in fig. 1, temperature collection can be performed on each single body in the battery system, but due to the inherent characteristics of the NTC sensor material, failure occurs under certain high temperature conditions and certain specific use conditions, which results in reduced collection accuracy of the battery temperature and failure to ensure accurate collection of the battery temperature.
In order to solve the above problem, the present application provides a battery temperature correction method, in which a temperature correction amount is determined according to an operating state of a battery, the operating state is a battery charging state or a battery discharging state, the temperature correction amount corresponding to each state is different, and finally, a current collected temperature value is corrected according to the temperature correction amount. Therefore, the accurate correction of the battery temperature under different working conditions is ensured, and the current actual temperature of the battery can be accurately determined.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Fig. 2 shows a method for correcting a battery temperature provided in the embodiment of the present application, which can accurately determine a current actual temperature of a battery, and the specific implementation flow is as follows:
s1, when the current temperature value of the battery is collected, the current operation state of the battery is determined;
s2, determining a temperature correction amount corresponding to the operating state;
and S3, performing temperature correction on the current temperature value according to the temperature correction quantity to obtain the actual temperature of the battery.
The technical solution of the present application is described in detail by the following detailed description.
First, in the embodiment of the present application, in order to accurately determine the actual temperature value of the battery, it is necessary to determine the temperature correction amounts of the battery in various operating states, that is, the temperature correction amount in the charged state and the temperature correction amount in the discharged state, before correcting the temperature value of the battery.
It should be noted that, in the following embodiments, the temperature correction process of a single battery is described, and the temperature correction processes of other batteries are consistent with the temperature correction process of the battery.
Because the battery is generally charged by a large current in the charging process, the temperature change speed of the battery is high, and the battery is generally discharged by a small current in the discharging process, the temperature change of the battery is slow, so that corresponding temperature correction quantities need to be determined respectively under different states of the battery.
In the embodiment of the present application, the temperature correction amount in the state of charge may be determined as follows:
the temperature value of the battery in the charging state, which is acquired by the battery in each acquisition cycle, is stored in a charging history database, namely the historical acquisition temperature, and a first average temperature value of the historical acquisition temperature of the battery in the charging state is acquired. In addition, the system will also obtain the average temperature values of a plurality of batteries adjacent to the battery, namely: a second average temperature value. And obtaining the temperature correction quantity in the charging state according to the first average temperature value, the second average temperature value and the reference temperature.
Specifically, an average value of a difference between the first average temperature value and the reference temperature value is used as a first charging temperature correction amount; and taking the average value of the difference value between the second average temperature value and the reference temperature value as a second charging temperature correction quantity, and finally taking the sum of the first charging temperature correction quantity and the second charging temperature correction quantity as the temperature correction quantity of the battery in the charging state.
For example, T is obtained by averaging the historical temperature values collected during the last 1000 charges of a single batteryhNamely: a first average temperature value, a first charging temperature correction amount of
Figure BDA0003304834740000061
Tr is a reference temperature value. The second charging temperature correction quantity is obtained by taking the average value of a plurality of adjacent batteries of the battery according to the structure to obtain T according to the consistency principle of temperature distributionavNamely: second average temperature value, second charging temperature correction amount
Figure BDA0003304834740000062
Finally, the temperature correction amount Tc of the battery in the charging state is obtained, namely Ta1+ Ta 2.
In the embodiment of the present application, the temperature correction amount in the discharge state may be determined as follows:
and storing the temperature value of the battery in the discharging state, namely the historical collection temperature, collected by the battery in each collection period in a discharging history database, and acquiring a third average temperature value of the historical collection temperature of the battery in the discharging state. In addition, the system will also obtain the average temperature values of a plurality of batteries adjacent to the battery, namely: a fourth average temperature value. And obtaining the temperature correction quantity in the discharging state according to the third average temperature value, the fourth average temperature value and the reference temperature.
Specifically, an average value of a difference between the third average temperature value and the reference temperature value is used as a first discharge temperature correction amount; and taking the average value of the difference value between the fourth average temperature value and the reference temperature value as a second discharging temperature correction value, and finally taking the sum of the first discharging temperature correction value and the second discharging temperature correction value as the temperature correction value of the battery in the discharging state.
For example, T is obtained by averaging the historical temperature values collected during the last 1000 discharges of a single cellMNamely: the third average temperature value and the first discharge temperature correction amount are
Figure BDA0003304834740000071
Tr is a reference temperature value. The second charging temperature correction quantity is obtained by taking the average value of a plurality of adjacent batteries of the battery according to the structure to obtain T according to the consistency principle of temperature distributionbvNamely: second average temperature value, second charging temperature correction amount
Figure BDA0003304834740000072
Finally, the temperature correction quantity Ts of the battery in the charging state is Tb1+ Tb 2.
The temperature correction amount in the charging state and the temperature correction amount in the discharging state of the battery can be obtained respectively through the method. Therefore, after the NTC sensor collects the current temperature value, the current temperature can be corrected through the temperature correction quantity to obtain the actual temperature of the battery, so that the accurate correction of the battery temperature under different working conditions is ensured, and the current actual temperature of the battery can be accurately determined.
Further, in the embodiment of the present application, in order to accurately obtain the reference temperature of the battery, the determination manner of the reference temperature is to determine whether the temperature sensor has a fault, specifically, the system detects whether the temperature sensor has a fault, where the fault detection may be one of or a combination of the following three implementations:
the first method is as follows: when any signal of the NTC sensor is not detected within a preset time period, judging that the NTC sensor has a fault;
the second method comprises the following steps: judging whether the temperature value detected by the NTC sensor does not change within preset time, if not, acquiring the temperature values of other NTC sensors adjacent to the NTC sensor, and judging whether the temperature difference value between the NTC sensor and the adjacent NTC sensor exceeds a preset threshold value, if not, judging that the NTC sensor does not have a fault, and if so, judging that the NTC sensor has a fault.
The third method comprises the following steps: detecting whether the temperature value acquired by the NTC sensor exceeds a preset threshold value within a preset time period, and if not, judging that other fault detection modes can be continuously used for detection; if not, the NTC sensor is judged to be in fault.
By the aid of the method, whether the current NTC sensor fails or not can be accurately determined, and if the current NTC sensor fails, the temperature value acquired at a moment before the NTC sensor fails is used as a reference temperature value. And if the NTC sensor is not in fault, taking the temperature value currently acquired by the NTC sensor as a reference temperature value.
In an alternative embodiment, the NTC sensor may gradually decrease the accuracy of temperature detection as the NTC sensor is used for a longer period of time during actual use, so that a temperature correction coefficient is set in the present application, and the temperature correction coefficient may gradually increase as the NTC sensor is used for a longer period of time, and the temperature correction coefficient has a value of 0 during the first use of the NTC sensor, and is 1 when the NTC sensor fails.
Therefore, when temperature compensation is performed, the temperature correction coefficient corresponding to the battery can be determined according to the state parameter of the battery, where the battery parameter can include the service time of the battery and/or the service time of the NTC sensor. And acquiring a product result between the temperature correction amount and the temperature correction coefficient, and taking the sum of the product result and the current temperature as the time temperature of the battery. Specifically, the following correction formula can be used to obtain:
Tf＝Tr+α*(Ta1+Ta2)
wherein, TfAlpha is a temperature correction coefficient, which is the actual temperature of the battery in the charged state.
According to the method, the NTC sensor is effectively used as the reference temperature on the basis of temperature acquisition, the influence of factors such as current magnitude and service time of the battery on the battery in the charging and discharging process is fully considered, and finally the temperature correction quantity is corrected through real-time change of the temperature correction coefficient calibrated under different working conditions, so that the accuracy and reliability of the temperature correction quantity in the charging and discharging processes of the battery are guaranteed to the greatest extent.
In response to the method provided by the present application, an embodiment of the present application further provides a battery temperature correction device, and as shown in fig. 3, the device is a schematic structural diagram of a temperature correction device in the embodiment of the present application, and includes:
the determining unit 301 is configured to determine a current operating state of the battery when a current temperature value of the battery is acquired, where the operating state is a battery charging state or a battery discharging state;
a temperature correction unit 302 for determining a temperature correction amount corresponding to the operating state; and carrying out temperature correction on the current temperature value according to the temperature correction quantity to obtain the actual temperature of the battery.
In a possible design, the temperature correction unit 302 is specifically configured to obtain a first average temperature value of a historical collected temperature of the battery in a charging state, and obtain a second average temperature value of a plurality of batteries adjacent to the battery;
obtaining a temperature correction quantity in a charging state according to the first average temperature value, the second average temperature value and a reference temperature value; and
acquiring a third average temperature value of historical acquisition temperature of the battery in a discharging state, and acquiring fourth average temperature values of a plurality of batteries adjacent to the battery;
and obtaining the temperature correction amount in the discharging state according to the third average temperature value, the fourth average temperature value and the reference temperature value.
In a possible design, the temperature correction unit 302 is specifically configured to use an average value of a difference between the first average temperature value and the reference temperature value as a first charging temperature correction amount;
taking an average value of a difference between the second average temperature value and the reference temperature value as a second charging temperature correction amount;
and taking the sum of the first charging temperature correction amount and the second charging temperature correction amount as a temperature correction amount under the charging state of the battery.
In a possible design, the temperature correction unit 302 is specifically configured to use an average value of a difference between the third average temperature value and the reference temperature value as a first discharge temperature correction amount;
taking the average value of the difference between the fourth average temperature value and the reference temperature value as a second discharge temperature correction amount;
and setting the sum of the first discharge temperature correction amount and the second discharge temperature correction amount as a temperature correction amount in a battery charging state.
In a possible design, the temperature correction unit 302 is further configured to detect whether a temperature sensor corresponding to the battery has a fault;
if so, taking a temperature value acquired by the temperature sensor at a moment before the fault as a reference temperature value;
if not, taking the temperature value currently acquired by the temperature sensor as a reference temperature value.
In a possible design, the temperature correction unit 302 is specifically configured to determine a temperature correction coefficient corresponding to the battery according to a state parameter of the battery, where the state parameter at least includes a usage time of the battery;
and acquiring a product result between the temperature correction amount and the temperature correction coefficient, and taking the sum of the product result and the current temperature as the actual temperature of the battery.
The battery temperature correction device can effectively take the acquired temperature as the reference temperature on the basis of the temperature acquired by the NTC sensor, fully considers the influence of factors such as the current size, the service time and the like of the battery on the battery in the charging and discharging process, and finally corrects the temperature correction amount through real-time change of the temperature correction coefficient calibrated under different working conditions, thereby ensuring the accuracy and the reliability of the temperature correction amount in the charging and discharging processes of the battery to the maximum extent.
Based on the same inventive concept, an embodiment of the present application further provides an electronic device, where the electronic device can implement the function of the foregoing battery temperature correction apparatus, and with reference to fig. 4, the electronic device includes:
at least one processor 401 and a memory 402 connected to the at least one processor 401, in this embodiment, a specific connection medium between the processor 401 and the memory 402 is not limited in this application, and fig. 4 illustrates an example in which the processor 401 and the memory 402 are connected by a bus 400. The bus 400 is shown in fig. 4 by a thick line, and the connection manner between other components is merely illustrative and not limited thereto. The bus 400 may be divided into an address bus, a data bus, a control bus, etc., and is shown with only one thick line in fig. 4 for ease of illustration, but does not represent only one bus or type of bus. Alternatively, processor 401 may also be referred to as a controller, without limitation to name a few.
In the embodiment of the present application, the memory 402 stores instructions executable by the at least one processor 401, and the at least one processor 401 can execute the output method of the landing zone discussed above by executing the instructions stored in the memory 402. The processor 401 may implement the functions of the various modules in the apparatus shown in fig. 3.
The processor 401 is a control center of the apparatus, and may connect various parts of the entire control device by using various interfaces and lines, and perform various functions and process data of the apparatus by operating or executing instructions stored in the memory 402 and calling data stored in the memory 402, thereby performing overall monitoring of the apparatus.
In one possible design, processor 401 may include one or more processing units and processor 401 may integrate an application processor that handles primarily operating systems, user interfaces, application programs, and the like, and a modem processor that handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 401. In some embodiments, processor 401 and memory 402 may be implemented on the same chip, or in some embodiments, they may be implemented separately on separate chips.
The processor 401 may be a general-purpose processor, such as a Central Processing Unit (CPU), digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like, that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the output method of the footfall area disclosed in the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
Memory 402, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The Memory 402 may include at least one type of storage medium, and may include, for example, a flash Memory, a hard disk, a multimedia card, a card-type Memory, a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a Programmable Read Only Memory (PROM), a Read Only Memory (ROM), a charge Erasable Programmable Read Only Memory (EEPROM), a magnetic Memory, a magnetic disk, an optical disk, and so on. The memory 402 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 402 in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.
The processor 401 is programmed to solidify the codes corresponding to the battery temperature correction method described in the foregoing embodiment into the chip, so that the chip can execute the steps of the battery temperature correction method of the embodiment shown in fig. 2 when running. How to program the processor 401 is well known to those skilled in the art and will not be described in detail herein.
Based on the same inventive concept, the present application also provides a storage medium storing computer instructions, which when executed on a computer, cause the computer to perform the battery temperature correction method discussed above.
In some possible embodiments, the aspects of the battery temperature correction method provided herein may also be implemented in the form of a program product comprising program code for causing the control apparatus to perform the steps of the battery temperature correction method according to various exemplary embodiments of the present application described above in this specification when the program product is run on a device.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. A battery temperature correction method, characterized in that the method comprises:
when the current temperature value of the battery is acquired, determining the current running state of the battery, wherein the running state is the battery charging state or the battery discharging state;
determining a temperature correction amount corresponding to the operating state;
and carrying out temperature correction on the current temperature value according to the temperature correction quantity to obtain the actual temperature of the battery.
2. The method of claim 1, wherein prior to determining the current operational state of the battery, the method further comprises:
acquiring a first average temperature value of historical acquisition temperature of the battery in a charging state, and acquiring second average temperature values of a plurality of batteries adjacent to the battery;
obtaining a temperature correction quantity in a charging state according to the first average temperature value, the second average temperature value and a reference temperature value; and
acquiring a third average temperature value of historical acquisition temperature of the battery in a discharging state, and acquiring fourth average temperature values of a plurality of batteries adjacent to the battery;
and obtaining the temperature correction amount in the discharging state according to the third average temperature value, the fourth average temperature value and the reference temperature value.
3. The method of claim 2, wherein obtaining the state-of-charge temperature modifier based on the first average temperature value, the second average temperature value, and a reference temperature value comprises:
taking an average value of a difference between the first average temperature value and the reference temperature value as a first charging temperature correction amount;
taking an average value of a difference between the second average temperature value and the reference temperature value as a second charging temperature correction amount;
and taking the sum of the first charging temperature correction amount and the second charging temperature correction amount as a temperature correction amount under the charging state of the battery.
4. The method of claim 2, wherein obtaining a temperature correction amount in a discharge state based on the third average temperature value, the fourth average temperature value, and a reference temperature value comprises:
taking an average value of a difference between the third average temperature value and the reference temperature value as a first discharge temperature correction amount;
taking the average value of the difference between the fourth average temperature value and the reference temperature value as a second discharge temperature correction amount;
and setting the sum of the first discharge temperature correction amount and the second discharge temperature correction amount as a temperature correction amount in a battery charging state.
5. The method of claim 2, wherein prior to obtaining the first average temperature value for the historical collected temperature of the battery at the state of charge, the method further comprises:
detecting whether a temperature sensor corresponding to the battery has a fault;
if so, taking a temperature value acquired by the temperature sensor at a moment before the fault as a reference temperature value;
if not, taking the temperature value currently acquired by the temperature sensor as a reference temperature value.
6. The method of claim 1, wherein temperature correcting the current temperature value based on the temperature correction amount to obtain the actual temperature of the battery comprises:
determining a temperature correction coefficient corresponding to the battery according to the state parameter of the battery, wherein the state parameter at least comprises the service time of the battery;
and acquiring a product result between the temperature correction amount and the temperature correction coefficient, and taking the sum of the product result and the current temperature as the actual temperature of the battery.
7. The method of claim 1, wherein after obtaining the actual temperature of the battery, the method further comprises:
and storing the actual temperature of the battery into a historical database corresponding to the running state.
8. A battery temperature correction apparatus, characterized in that the apparatus comprises:
the device comprises a determining unit, a judging unit and a judging unit, wherein the determining unit is used for determining the current running state of a battery when the current temperature value of the battery is acquired, and the running state is the battery charging state or the battery discharging state;
a temperature correction unit for determining a temperature correction amount corresponding to the operation state; and carrying out temperature correction on the current temperature value according to the temperature correction quantity to obtain the actual temperature of the battery.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the method steps of any one of claims 1-7 when executing the computer program stored on the memory.
10. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of claims 1 to 7.
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