CN111982334A - Temperature correction method and device, computer storage medium, and processor - Google Patents

Abstract

The invention discloses a temperature correction method and device, a computer storage medium and a processor. Wherein, the method comprises the following steps: determining the temperature distribution condition of the temperature acquisition object under different working condition parameters through thermal simulation; receiving temperature data acquired by a temperature sensor, and determining a voltage value corresponding to the temperature data, wherein a plurality of temperature sensors are distributed on a temperature acquisition object; determining a fault of the temperature sensor under the condition that the voltage value meets a preset voltage threshold; and correcting the temperature data of the temperature acquisition object according to the number and the positions of the temperature sensors with faults and the temperature distribution condition. The invention solves the technical problem of potential safety hazard caused by the fact that temperature data cannot be effectively corrected under the condition of temperature sensor failure by directly acquiring the temperature through the temperature sensor in the related technology.

Description

Temperature correction method and device, computer storage medium, and processor

technical field

The present invention relates to the field of temperature monitoring, and in particular, to a temperature correction method and device, a computer storage medium, and a processor.

Background technique

With the continuous development of the automobile industry and changes in the global environment, electric vehicles have become the general direction of vehicle development in the future. For electric vehicles, the suitable working temperature range of lithium-ion power batteries is 10 ° C ~ 30 ° C, but in most areas there are changes throughout the year, or in the south or north, there are extremely cold or extremely hot requirements. The ambient temperature cannot be kept within its proper temperature range because of the proper temperature of the power battery.

In order to give full play to the electrical performance of the power battery and prolong the service life of the power battery, the spontaneous combustion of electric vehicles has become more and more frequent in recent years, which makes people pay more attention to the thermal management of the battery system. The main function of the so-called thermal management is to heat the power battery when the temperature of the power battery is lower than the set temperature; when the temperature of the power battery is higher than the set temperature, to cool the power battery. The actual working temperature of the power battery needs to be obtained by a temperature sensor installed on the surface of the power battery, and various actions of thermal management are also based on the temperature monitored by the temperature sensor. This makes it very important for the temperature sensor to collect the temperature, but once the temperature sensor fails, what to do with the collected temperature value.

In the traditional design method, when the temperature sensor (NTC) acquisition fails, the controller directly reports the power-off operation, which makes the whole system lack a certain robustness, and the experience for customers is not good, which may cause danger in extreme cases.

For the above problems, no effective solution has been proposed yet.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a temperature correction method and device, a computer storage medium, and a processor, so as to at least solve the method of directly collecting the temperature through the temperature sensor in the related art, and the temperature data cannot be effectively corrected when the temperature sensor fails. Technical issues that lead to security risks.

According to an aspect of the embodiments of the present invention, a temperature correction method is provided, which includes: determining the temperature distribution of a temperature acquisition object under different working condition parameters through thermal simulation; receiving temperature data collected by a temperature sensor, and determining the temperature data The corresponding voltage value, wherein a plurality of temperature sensors are arranged on the temperature acquisition object; when the voltage value meets the preset voltage threshold, it is determined that the temperature sensor is faulty; according to the number of faulty temperature sensors and position, and the temperature distribution, and correct the temperature data of the temperature acquisition object.

Optionally, according to the number and location of the faulty temperature sensors, and the temperature distribution, revising the temperature data of the temperature acquisition object includes: according to the number of the faulty temperature sensors, determining whether to The temperature data of the collected object is corrected; in the case where the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and a preset first ratio threshold is satisfied, according to the position of the faulty temperature sensor and the According to the temperature distribution, the temperature data of the temperature acquisition object is corrected.

Optionally, correcting the temperature data of the temperature acquisition object according to the location of the faulty temperature sensor and the temperature distribution includes: determining, according to the temperature distribution, a working condition corresponding to the current temperature data to be corrected. If the parameters are consistent, the temperature ratio of different positions of the object is collected; according to the temperature ratio and the temperature data collected by the normal temperature sensor, the corrected temperature of the location of the faulty temperature sensor is determined; The corrected temperature is used as the temperature data collected by the faulty temperature sensor, so as to correct the temperature data of the temperature collection object.

Optionally, determining the corrected temperature at the location of the faulty temperature sensor according to the temperature ratio and the temperature data collected by the normally operating temperature sensor includes: respectively determining the faulty temperature sensor and a plurality of normally operating temperature sensors. ratio; according to the product of the ratio and the temperature collected by the normal operating temperature sensor corresponding to the ratio, as the correction value of the normal operating temperature sensor corresponding to the ratio to the faulty temperature sensor; The operating temperature sensor averages the correction value of the faulty temperature sensor to determine the correction temperature.

Optionally, it also includes: in the case where the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and does not meet the preset first ratio threshold, ending the current temperature collection; The temperature sensor is repaired until it is determined that the ratio of the number of faulty temperature sensors to the total number of temperature sensors satisfies the preset first ratio threshold.

Optionally, in the case of determining the ratio of the number of faulty temperature sensors to the total number of temperature sensors and satisfying a preset first ratio threshold, according to the position of the faulty temperature sensor and the temperature distribution , after revising the temperature data of the temperature acquisition object, the method further includes: determining whether the ratio satisfies the second ratio threshold under the condition that the preset first ratio threshold is met; when the ratio satisfies the preset first ratio threshold In the case of the ratio threshold, and if the second ratio threshold is not satisfied, the power of the temperature acquisition object is limited.

Optionally, receiving temperature data collected by a temperature sensor, and determining a voltage value corresponding to the temperature data includes: obtaining a current value of the temperature data collected by the temperature sensor; Converted to voltage value.

According to another aspect of the embodiments of the present invention, a temperature correction device is also provided, including: a determination module, used for determining the temperature distribution of the temperature acquisition object under different working condition parameters through thermal simulation; a receiving module, used for receiving The temperature data collected by the temperature sensor determines the voltage value corresponding to the temperature data, wherein a plurality of temperature sensors are arranged on the temperature collection object; the detection module is used for when the voltage value meets a preset voltage threshold Next, it is determined that the temperature sensor is faulty; the correction module is configured to correct the temperature data of the temperature acquisition object according to the number and location of the faulty temperature sensors and the temperature distribution.

According to another aspect of the embodiments of the present invention, a computer storage medium is further provided, where the computer storage medium includes a stored program, wherein when the program runs, the device where the computer storage medium is located is controlled to execute any one of the above The temperature correction method described in item.

According to another aspect of the embodiments of the present invention, a processor is further provided, and the processor is configured to run a program, wherein when the program runs, any one of the above temperature correction methods is executed.

In the embodiment of the present invention, the temperature distribution of the temperature collection object under different working conditions parameters is determined by thermal simulation; the temperature data collected by the temperature sensor is received, and the voltage value corresponding to the temperature data is determined, wherein the temperature collection object is arranged with Multiple temperature sensors; when the voltage value meets the preset voltage threshold, determine the temperature sensor failure; according to the number and location of the faulty temperature sensors, as well as the temperature distribution, the temperature data of the temperature acquisition object is corrected. According to the voltage value corresponding to the temperature data of the temperature sensor, it is determined whether the temperature sensor is faulty. In the case of a fault, the temperature data corresponding to the faulty temperature sensor is corrected according to the temperature distribution, as well as the position and number of the temperature sensor. In the case of a temperature sensor failure, the temperature distribution of the temperature acquisition object and the temperature data of other normal temperature sensors can also be used to correct and complete the faulty temperature data, so as to ensure the temperature of the temperature acquisition object. The integrity of the data, monitoring the temperature collection object according to the collected temperature, effectively reduces the technical effect of the potential safety hazard of the temperature collection object that may be caused by abnormal temperature, and then solves the method of directly collecting the temperature through the temperature sensor in the related technology. In the case of temperature sensor failure, the temperature data cannot be effectively corrected, resulting in technical problems of potential safety hazards.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a flowchart of a temperature correction method according to an embodiment of the present invention;

2 is a flow chart of temperature correction according to an embodiment of the present invention;

3 is a flowchart of a specific temperature correction method according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a temperature correction device according to an embodiment of the present invention.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

According to an embodiment of the present invention, a method embodiment of a temperature correction method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be executed in a computer system such as a set of computer-executable instructions, and, Although a logical order is shown in the flowcharts, in some cases steps shown or described may be performed in an order different from that herein.

FIG. 1 is a flowchart of a temperature correction method according to an embodiment of the present invention. As shown in FIG. 1 , the method includes the following steps:

Step S102, determining the temperature distribution of the temperature acquisition object under different working condition parameters through thermal simulation;

Step S104, receiving the temperature data collected by the temperature sensor, and determining the voltage value corresponding to the temperature data, wherein a plurality of temperature sensors are arranged on the temperature collection object;

Step S106, when the voltage value meets the preset voltage threshold, determine that the temperature sensor is faulty;

Step S108, correcting the temperature data of the temperature acquisition object according to the number and location of the faulty temperature sensors and the temperature distribution.

Through the above steps, the temperature distribution of the temperature acquisition object under different working conditions parameters is determined by thermal simulation; the temperature data collected by the temperature sensor is received, and the voltage value corresponding to the temperature data is determined, wherein the temperature acquisition object is arranged with a plurality of temperature Sensor; when the voltage value meets the preset voltage threshold, determine the temperature sensor fault; according to the number and location of the faulty temperature sensors, as well as the temperature distribution, the method of correcting the temperature data of the temperature acquisition object, through the temperature sensor The temperature data corresponds to the voltage value to determine whether the temperature sensor is faulty. In the case of a fault, the temperature data corresponding to the faulty temperature sensor is corrected according to the temperature distribution, as well as the position and number of the temperature sensor. In the case of the temperature acquisition object, the temperature distribution of the temperature acquisition object and the temperature data of other normal temperature sensors can also be used to correct and complete the faulty temperature data, so as to ensure the integrity of the temperature data of the temperature acquisition object. The temperature collection object is monitored according to the collected temperature, which effectively reduces the technical effect of the potential safety hazard of the temperature collection object caused by abnormal temperature, and further solves the method of directly collecting the temperature through the temperature sensor in the related art. In the case of failure, the temperature data cannot be effectively corrected, resulting in technical problems of potential safety hazards.

The above thermal simulation can be performed by simulation software, and the above temperature acquisition object can be the battery module of the car. Input the battery cell and module parameters of the battery module and the corresponding current working conditions in the simulation software to obtain the temperature under specific working conditions. Distribution. Specifically, the current operating conditions can be changed for the same battery module to obtain temperature distributions corresponding to multiple current operating conditions.

The above temperature distribution can be described by the ratio of the temperature of different positions and parts. For example, a battery module can include 4 single cells, and the temperature ratio of the 4 single cells can be used to describe the temperature distribution of the above battery module. Happening. In addition, it can also be described by setting the temperature ratio of the position of the temperature sensor. For example, there are 10 temperature sensors on the battery module, and the ratio of the temperature at the positions of the 10 temperature sensors can also be used to describe the above temperature distribution. .

In addition, the above temperature distribution can also be displayed through a temperature cloud map to describe the temperature distribution.

After obtaining the temperature distribution under different working condition parameters, the temperature data collected by multiple temperature sensors set on the temperature collection object is received, that is, the data directly transmitted after the temperature sensor collects the temperature. In terms of data form, it can be It is voltage data, it can be current data, it can be the voltage value of voltage data, it can also be the current value of current data, and it can also be the AD value of temperature data. The voltage value can be calculated from the AD value.

Whether the temperature sensor is faulty can be determined according to the voltage value of the temperature data of the temperature sensor. Specifically, when the voltage value satisfies a preset voltage threshold, it is determined that the temperature sensor is faulty. The above-mentioned preset voltage threshold value may be the voltage threshold value of the normal voltage of the normal operation of the temperature sensor obtained by statistics.

After it is determined that the temperature sensor is faulty, the reliability of the temperature data collected by the temperature sensor is greatly reduced. Therefore, the temperature data of the temperature sensor needs to be corrected by other temperature sensors that are not faulty. Specifically, the temperature data of the temperature acquisition object is corrected according to the number and location of the faulty temperature sensors and the temperature distribution. Therefore, through the corresponding voltage value of the temperature data of the temperature sensor, it is determined whether the temperature sensor is faulty. In the case of a temperature sensor failure, the purpose of correcting and complementing the faulty temperature data can also be based on the temperature distribution of the temperature acquisition object and the temperature data pairs of other normal temperature sensors.

The technical effect of ensuring the integrity of the temperature data of the temperature collection object is realized, and the temperature collection object is monitored according to the collected temperature, which effectively reduces the technical effect of the potential safety hazard of the temperature collection object that may be caused by abnormal temperature. The temperature sensor directly collects the temperature. In the case of a temperature sensor failure, the temperature data cannot be effectively corrected, resulting in technical problems of potential safety hazards.

Optionally, modifying the temperature data of the temperature acquisition object according to the number and location of the faulty temperature sensors and the temperature distribution includes: determining whether to correct the temperature data of the temperature acquisition object according to the number of faulty temperature sensors; When the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and the preset first ratio threshold is satisfied, the temperature data of the temperature acquisition object is corrected according to the location and temperature distribution of the faulty temperature sensor .

The above-mentioned determination of whether to correct the temperature data of the temperature acquisition object according to the number of faulty temperature sensors may be that the ratio of the number of faulty temperature sensors to the total number of temperature sensors does not exceed the first ratio threshold, for example, does not exceed 50 %, because the number of faulty sensors is too large, the reliable temperature data obtained by the normal working temperature sensor will become less, and the accuracy of the temperature correction may not meet the requirements. Therefore, the fault can only be detected within the ratio threshold. The temperature data of the temperature sensor is corrected.

When the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and the preset first ratio threshold is satisfied, the temperature data of the temperature acquisition object is corrected according to the location and temperature distribution of the faulty temperature sensor . Thus, the accuracy of the correction of the temperature data of the faulty temperature sensor is ensured.

Optionally, according to the location and temperature distribution of the faulty temperature sensor, correcting the temperature data of the temperature acquisition object includes: determining, according to the temperature distribution, when the working condition parameters corresponding to the current temperature data to be corrected are consistent, The temperature ratio of different positions of the temperature acquisition object; according to the temperature ratio and the temperature data collected by the normal temperature sensor, the corrected temperature of the location of the faulty temperature sensor is determined; the corrected temperature is used as the temperature data collected by the faulty temperature sensor. The temperature data of the temperature acquisition object is corrected.

The above-mentioned temperature ratio can be used to characterize the temperature distribution of the above-mentioned temperature acquisition object. The corrected temperature at the location of the faulty temperature sensor can be determined according to the temperature ratio and the temperature data collected by the normal temperature sensor, so as to correct the temperature data of the temperature acquisition object.

Optionally, determining the corrected temperature at the location of the faulty temperature sensor according to the temperature ratio and the temperature data collected by the normally operating temperature sensor includes: respectively determining the ratio of the faulty temperature sensor to a plurality of normal operating temperature sensors; The product of the temperature collected by the normal operating temperature sensor corresponding to the ratio is used as the correction value of the normal operating temperature sensor corresponding to the ratio to the faulty temperature sensor; average to determine the correction temperature.

Taking a temperature collection object as a battery module as an example, the battery module is provided with 4 NTCs, and the 4 NTCs are respectively distributed in the center of the surface of the 4 battery cells, and the NTC numbers are set as 1, 2, and 3 respectively. , 4, the temperature ratio is a:b:c:d. T1, T2, T3, and T4 are the temperature of the No. 1 monomer, the temperature of the No. 2 monomer, the temperature of the No. 3 monomer and the temperature of the No. 4 monomer. If the number of failures is less than 40%, that is, one NTC fails, the corresponding correction strategy is:

若2失效：则

以此类推。If 1 fails: then

If 2 fails: then

And so on.

If the number of failed NTCs is greater than 40% but less than or equal to 50%, namely two failures, the following strategies are used to correct:

若2，3失效，则

以此类推。确定修正温度。If 1 and 2 fail, then

If 2 and 3 fail, then

And so on. Determine the correction temperature.

Optionally, it also includes: in the case where the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and does not meet the preset first ratio threshold, ending the current temperature collection; overhauling the temperature sensors until A ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined to satisfy a preset first ratio threshold.

That is, when the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and does not meet the preset first ratio threshold, it means that the ratio of the number of faulty temperature sensors to the total number of temperature sensors is too large. , the proportion of the faulty temperature sensor is too high, and using the temperature data of the normal temperature sensor to correct the temperature data of the faulty temperature sensor has the problems of low accuracy and poor stability. Therefore, all temperature sensors are directly powered off, and the temperature sensors are repaired and replaced until the proportion of the number of faulty temperature sensors reaches the requirement predicted by the first ratio, and the temperature data of the faulty temperature sensors can be corrected.

Optionally, when the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and the preset first ratio threshold is satisfied, according to the position and temperature distribution of the faulty temperature sensor, After the temperature data is corrected, the method further includes: determining whether the ratio satisfies the second ratio threshold when the preset first ratio threshold is met; when the ratio satisfies the preset first ratio threshold and does not satisfy the first ratio threshold In the case of two ratio thresholds, the power of the temperature acquisition object is limited.

If the first ratio threshold is satisfied, it means that temperature correction can be performed, but within the first ratio threshold, there may be different situations, including a relatively small proportion of the number of temperature sensors that fail, for example, less than the second ratio threshold , and the second ratio threshold is smaller than the first ratio threshold. Or the number of faulty temperature sensors is relatively large. For example, it is greater than or equal to the second ratio threshold and less than the first ratio threshold. Although the number of faulty temperature sensors at this time can meet the requirements for correction, the number is still relatively high. Therefore, while correcting the temperature, the power of the temperature acquisition object is limited, which can effectively prevent the safety hazards caused by the power being too high and the temperature being controlled in time, and further improve the safety of temperature monitoring.

Optionally, receiving the temperature data collected by the temperature sensor, and determining the voltage value corresponding to the temperature data includes: obtaining a current value of the temperature data collected by the temperature sensor; and converting the current value into a voltage value according to the collection circuit where the temperature sensor is located.

For example, according to the AD value collected by the temperature sensor NTC, according to the acquisition circuit, the AD value is converted into a voltage value, and according to the voltage value, it is judged whether the temperature sensor NTC fails at this time, and the position and number of the failed temperature sensor NTC are obtained.

It should be noted that the embodiment of the present application further provides an optional implementation manner, which will be described in detail below.

In this embodiment, the temperature distribution of the battery module is obtained by thermal simulation of the battery module. When the NTC fails, the number and position of the failed NTCs are determined, and the temperature distribution obtained by the simulation is used to correct the failed temperature, so as to It provides a better basis for other functions of the battery management system, so that the battery management system has good robustness.

First, the professional terms that may appear in this embodiment are explained:

NTC: temperature sensor

C: The nominal capacity of the battery, 1C means charging and discharging according to the rate of 1 capacity, if C=100AH, then 1C discharging means discharging at a current of 100A.

BMS: Battery Management System.

Robustness: refers to the stability of the system in abnormal and dangerous situations.

In this embodiment, the temperature distribution of the battery module is obtained by thermal simulation of the battery module. When the NTC fails, the number and position of the failed NTCs are determined, and the temperature distribution obtained by the simulation is used to correct the failed temperature, so as to Provide better basis for other functions of the battery management system, so that the battery management system has better user experience, better safety and better robustness.

FIG. 2 is a flow chart of temperature correction according to an embodiment of the present invention. As shown in FIG. 2 , the steps of this embodiment are as follows:

1. Obtain the temperature distribution of the module according to the thermal simulation of the battery module. Using the thermal simulation software, input the parameters of the battery cell and the module and the corresponding current conditions to obtain the temperature distribution under specific conditions. For example, set the current size as: 0.1C, 0.3C, 0.5C, 1C, 1.5C, 2C. The resulting temperature distributions are integrated.

The ratio of temperature distribution can be obtained by simplifying the temperature distribution under various currents. For example, the battery module includes 4 single cells, and the temperature distribution ratio of the 4 single cells is simplified as a:b:c:d.

2. According to the AD value collected by the NTC, according to the acquisition circuit, convert the AD value into a voltage value (V _T ), judge whether the NTC is invalid at this time according to the voltage value, and obtain the position and number of the failed NTC, and divide the NTC failure into Three types: open circuit (V _T >a), short circuit (V _T <b), over-range (b<V _T <c, d<V _T <a), where the values of a,b,c,d are determined by the NTC parameters Decide.

3. Correct the temperature according to the number and position of the failed NTCs: if the number of failed NTCs is less than 40%, the temperature correction is performed, and the BMS does not perform other operations. If the number of failed NTCs is greater than 40% but less than or equal to 50%, Perform temperature correction, and limit the discharge and charging power of the entire vehicle. If the number of failed NTCs is greater than 50%, no correction is made and the power-off operation is performed.

FIG. 3 is a flowchart of a specific temperature correction method according to an embodiment of the present invention. As shown in FIG. 3 , the specific method of performing temperature correction in the above steps is as follows:

4. Taking 4 NTCs in a module as an example, the 4 NTCs are distributed in the center of the surface of the 4 monomers, respectively, and the NTC numbers are set as 1, 2, 3, and 4, and the temperature ratio is a:b:c: d. T1, T2, T3, and T4 are the temperature of the No. 1 monomer, the temperature of the No. 2 monomer, the temperature of the No. 3 monomer and the temperature of the No. 4 monomer.

(1) If the number of failures is less than 40%, that is, one NTC fails, the corresponding correction strategy is:

If 1 fails: then

If 2 fails: then

If 3 fails: then

If 4 fails: then

After the temperature is corrected by the above strategy, the BMS can work normally, and the corrected temperature is used for calculation and related thermal management strategies.

(2) If the number of failed NTCs is greater than 40% but less than or equal to 50%, namely two failures, the following strategies are used to correct:

If 1 and 2 fail, then

If 1 and 3 fail, then

If 1 and 4 are invalid, then

If 2 and 3 fail, then

If 2 and 4 fail, then

If 3 and 4 fail, then

If the above two NTCs fail, the charging and discharging power will be limited.

(3) If more than 50% of NTCs fail, if the number of failed NTCs is greater than 50%, no correction is made, and the power-off operation is performed.

The above a, b, c, d parameters are determined by the temperature distribution obtained by the simulation.

This embodiment proposes a temperature correction strategy when the NTC fails. The number of temperature NTCs and the method for obtaining the temperature distribution are not limited, which can be obtained by simulation or by experimental method. Different NTC distribution locations may lead to changes in the modified parameters, but the principle of the method remains unchanged.

This embodiment proposes a temperature failure processing strategy. When the NTC fails, the temperature correction is performed by judging the number and position of the failed NTCs. BMS processing is different under different failure conditions. If the number of failed NTCs is less than 40%, temperature correction is performed, and BMS does not perform any operation. If the number of failed NTCs is greater than 40% but less than or equal to 50%, temperature correction is performed, and the whole The discharge and charging power of the car are limited. If the number of failed NTCs is greater than 50%, no correction is made and the power-off operation is performed. The modification strategy can provide better basis for other functions of the battery management system, so that the battery management system has better user experience, better safety and better robustness.

FIG. 4 is a schematic diagram of a temperature correction device according to an embodiment of the present invention. As shown in FIG. 4 , according to another aspect of the embodiment of the present invention, a temperature correction device is further provided, including: a determining module 42 , a receiving module 44. The detection module 46 and the correction module 48 are described in detail below.

The determination module 42 is used to determine the temperature distribution of the temperature acquisition object under different working condition parameters through thermal simulation; the reception module 44 is connected to the above-mentioned determination module 42, and is used to receive the temperature data collected by the temperature sensor, and determine the corresponding temperature data. The voltage value, wherein a plurality of temperature sensors are arranged on the temperature collection object; the detection module 46 is connected to the above-mentioned receiving module 44, and is used to determine the temperature sensor failure when the voltage value meets the preset voltage threshold; the correction module 48 , which is connected to the above-mentioned detection module 46 and used to correct the temperature data of the temperature acquisition object according to the number and location of the faulty temperature sensors and the temperature distribution.

Through the above device, the determination module 42 is used to determine the temperature distribution of the temperature acquisition object under different working condition parameters through thermal simulation; the receiving module 44 receives the temperature data collected by the temperature sensor, and determines the voltage value corresponding to the temperature data, wherein the temperature acquisition object is A plurality of temperature sensors are arranged on it; the detection module 46 determines the temperature sensor failure when the voltage value meets the preset voltage threshold; the correction module 48 collects the temperature according to the number and position of the faulty temperature sensors and the temperature distribution. The method of correcting the temperature data of the object is to determine whether the temperature sensor is faulty through the corresponding voltage value of the temperature data of the temperature sensor. In the case of temperature sensor failure, the temperature data of the temperature acquisition object can also be corrected and supplemented according to the temperature distribution of the temperature acquisition object and the temperature data of other normal temperature sensors. In this way, the integrity of the temperature data of the temperature collection object is ensured, and the temperature collection object is monitored according to the collected temperature, which effectively reduces the technical effect of the potential safety hazard of the temperature collection object that may be caused by abnormal temperature, and further solves the problem in related technologies. Through the method of directly collecting the temperature by the temperature sensor, in the case of failure of the temperature sensor, the temperature data cannot be effectively corrected, resulting in technical problems of potential safety hazards.

According to another aspect of the embodiments of the present invention, a computer storage medium is also provided, where the computer storage medium includes a stored program, wherein when the program runs, the device where the computer storage medium is located is controlled to execute any one of the above temperature correction methods.

According to another aspect of the embodiments of the present invention, a processor is further provided, and the processor is used for running a program, wherein when the program is running, any one of the above temperature correction methods is executed.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

In the above-mentioned embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are only illustrative, for example, the division of the units may be a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components may be combined or Integration into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of units or modules, and may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes .

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. a temperature correction method, is characterized in that, comprises: Determine the temperature distribution of the temperature acquisition object under different working parameters through thermal simulation; receiving temperature data collected by a temperature sensor, and determining a voltage value corresponding to the temperature data, wherein a plurality of temperature sensors are arranged on the temperature collection object; In the case that the voltage value satisfies a preset voltage threshold value, determine that the temperature sensor is faulty; The temperature data of the temperature acquisition object is corrected according to the number and location of the faulty temperature sensors and the temperature distribution. 2 . The method according to claim 1 , wherein, according to the number and position of the faulty temperature sensors and the temperature distribution, revising the temperature data of the temperature acquisition object comprises: 3 . According to the number of the faulty temperature sensors, determine whether to correct the temperature data of the temperature acquisition object; In the case where the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and the preset first ratio threshold is satisfied, the temperature is collected according to the position of the faulty temperature sensor and the temperature distribution. The temperature data of the object is corrected. 3 . The method according to claim 2 , wherein, according to the position of the faulty temperature sensor and the temperature distribution, revising the temperature data of the temperature acquisition object comprises: 3 . Determine, according to the temperature distribution, the temperature ratios at different positions of the temperature acquisition object under the condition that the working condition parameters corresponding to the current temperature data to be corrected are consistent; Determine the corrected temperature at the location of the faulty temperature sensor according to the temperature ratio and the temperature data collected by the normal operating temperature sensor; The corrected temperature is used as the temperature data collected by the faulty temperature sensor, so as to correct the temperature data of the temperature collection object. 4. The method according to claim 3, wherein, according to the temperature ratio and the temperature data collected by the temperature sensor that operates normally, determining the corrected temperature at the location of the faulty temperature sensor comprises: respectively determining the ratio of the faulty temperature sensor to a plurality of normal operating temperature sensors; According to the product of the ratio and the temperature collected by the normal operating temperature sensor corresponding to the ratio, as the correction value of the normal operating temperature sensor corresponding to the ratio to the faulty temperature sensor; The corrected temperature is determined according to an average value of the correction values of the faulty temperature sensor from a plurality of normal operating temperature sensors. 5. The method of claim 2, further comprising: In the case of determining that the ratio of the number of faulty temperature sensors to the total number of temperature sensors does not meet the preset first ratio threshold, end the current temperature collection; The temperature sensor is overhauled until it is determined that the ratio of the number of faulty temperature sensors to the total number of temperature sensors satisfies the preset first ratio threshold. 6 . The method according to claim 2 , wherein, when the ratio of the number of faulty temperature sensors to the total number of temperature sensors is determined and a preset first ratio threshold is satisfied, according to the fault The location of the temperature sensor and the temperature distribution, after correcting the temperature data of the temperature acquisition object, it also includes: determining whether the ratio satisfies a second ratio threshold under the condition that a preset first ratio threshold is satisfied; Under the condition that the ratio satisfies the preset first ratio threshold and does not satisfy the second ratio threshold, the power of the temperature acquisition object is limited. 7. The method according to any one of claims 1 to 6, wherein receiving temperature data collected by a temperature sensor, and determining a voltage value corresponding to the temperature data comprises: obtaining the current value of the temperature data collected by the temperature sensor; The current value is converted into a voltage value according to the acquisition circuit where the temperature sensor is located. 8. A temperature correction device, comprising: The determination module is used to determine the temperature distribution of the temperature acquisition object under different working condition parameters through thermal simulation; a receiving module, configured to receive temperature data collected by a temperature sensor, and determine a voltage value corresponding to the temperature data, wherein a plurality of temperature sensors are arranged on the temperature collection object; a detection module, configured to determine that the temperature sensor is faulty when the voltage value meets a preset voltage threshold; A correction module, configured to correct the temperature data of the temperature acquisition object according to the number and location of the faulty temperature sensors and the temperature distribution. 9 . A computer storage medium, characterized in that the computer storage medium comprises a stored program, wherein when the program is run, a device where the computer storage medium is located is controlled to execute the program described in any one of claims 1 to 7 temperature correction method. 10 . A processor, wherein the processor is configured to run a program, wherein the temperature correction method according to any one of claims 1 to 7 is executed when the program is run.

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