Battery temperature control method and device, readable storage medium and electronic equipment

Abstract

The present disclosure provides a battery temperature control method, device, readable storage medium and electronic equipment, the method comprises: obtaining the current information of the battery module, and the first temperature of the first position of the battery module and the second temperature of the second position of the battery module, determining the compensation value of the first temperature according to the current information, the first temperature and the second temperature, and compensating the first temperature according to the compensation value of the first temperature to obtain the compensated temperature of the first position. The scheme of the present disclosure can reduce the fluctuation influence of the positive position temperature acquisition value of the battery module caused by the instability of the current, improve the reliability of the first temperature acquisition value and the operation effect of the battery management system, and reduce the safety hazard of the battery module in time.

Description

Technical Field

[0001] This disclosure relates to the field of battery temperature control technology, and in particular to a battery temperature control method, apparatus, readable storage medium, and electronic device. Background Technology

[0002] Battery temperature is a crucial parameter for battery management systems (BMS). Timely control of battery temperature effectively ensures battery safety. Current methods of acquiring battery temperature primarily use the temperature of the positive electrode as the cell temperature. However, in applications such as electric vehicles with smaller battery capacities and complex, variable battery conditions, the pulsed nature of battery current can cause the measured temperature of the positive electrode to rise rapidly and exhibit unstable fluctuations. This results in an inaccurate reading of the actual cell temperature, impacting the operation of the BMS and increasing safety risks. Summary of the Invention

[0003] In view of this, the present disclosure provides a battery temperature control method, apparatus, readable storage medium, and electronic device to at least solve the technical problems existing in the related art.

[0004] According to a first aspect of the present disclosure, a battery temperature control method is provided, the method comprising:

[0005] Acquire the current information of the battery module, as well as the first temperature at the first position and the second temperature at the second position of the battery module, wherein the first position represents the positive electrode position of the battery module, and the relationship between the second position and the first position satisfies a preset condition;

[0006] Based on the current information, the first temperature, and the second temperature, determine the compensation value for the first temperature;

[0007] The first temperature is compensated based on the compensation value of the first temperature to obtain the compensated temperature at the first position.

[0008] In conjunction with any embodiment of this disclosure, before compensating the first temperature according to the compensation value of the first temperature, the method further includes:

[0009] Determine the integral value of the current of the battery module within a first preset time period;

[0010] In response to the current integral value being greater than or equal to a preset integral threshold, compensation is applied to the first temperature.

[0011] In conjunction with any embodiment of this disclosure, if the integral value of the current is greater than or equal to a preset integral value, the method further includes:

[0012] Determine the maximum value of the second temperature within the first preset time period;

[0013] In response to the fact that the maximum value of the second temperature is less than a preset temperature threshold, the first temperature is compensated.

[0014] In any embodiment of this disclosure, determining the compensation value for the first temperature based on the current information, the first temperature, and the second temperature includes:

[0015] Determine the integral value of the current of the battery module within a first preset time period;

[0016] Based on the integral value of the current and the preset mapping relationship, a first compensation value for the first temperature is determined;

[0017] The average temperature difference between the first and second positions of multiple battery modules in the battery module is determined as the second compensation value of the first temperature.

[0018] The compensation value for the first temperature is determined based on the comparison result between the first compensation value and the second compensation value.

[0019] In any embodiment of this disclosure, the step of compensating the first temperature based on the compensation value of the first temperature to obtain the compensated temperature at the first position includes:

[0020] According to a first preset rate, the first temperature is adjusted to the compensation temperature and maintained at the compensation temperature for a preset duration.

[0021] In conjunction with any embodiment of this disclosure, after adjusting the first temperature to the compensated temperature according to a first preset rate, the method further includes:

[0022] If the compensation time for the first temperature exceeds the preset duration, or if the maximum value of the second temperature of the battery module is greater than or equal to a preset temperature threshold, the compensation temperature is adjusted to the first temperature according to a second preset rate, wherein the first preset rate is greater than the second preset rate.

[0023] In any embodiment of this disclosure, adjusting the first temperature to the compensated temperature according to a first preset rate includes:

[0024] In response to the fact that the current integral value of the battery module is greater than or equal to a preset integral threshold within the preset time period, and the maximum value of the second temperature of the battery module is less than a preset temperature threshold, the compensation time for the first temperature is re-timed.

[0025] In conjunction with any embodiment of this disclosure, after acquiring the current information of the battery module, and the first temperature at the first location of the battery module and the second temperature at the second location of the battery module, the method further includes:

[0026] In response to the first temperature being lower than the second temperature, the first temperature is adjusted to the second temperature.

[0027] According to a second aspect of the present disclosure, a battery temperature control device is provided, the device comprising:

[0028] The information acquisition module is used to: acquire the current information of the battery module, as well as the first temperature at the first position of the battery module and the second temperature at the second position of the battery module, wherein the first position represents the positive electrode position of the battery module, and the relationship between the second position and the first position satisfies a preset condition;

[0029] The compensation value determination module is used to: determine the compensation value of the first temperature based on the current information, the first temperature, and the second temperature;

[0030] The temperature compensation module is used to: compensate the first temperature according to the compensation value of the first temperature to obtain the compensated temperature at the first position.

[0031] In any embodiment of this disclosure, before the compensation value determination module compensates the first temperature according to the compensation value of the first temperature, the device further includes an integral determination module, used for:

[0032] Determine the integral value of the current of the battery module within a first preset time period;

[0033] In response to the current integral value being greater than or equal to a preset integral threshold, compensation is applied to the first temperature.

[0034] In conjunction with any embodiment of this disclosure, when the integral value of the current is greater than or equal to a preset integral value, the device further includes a maximum temperature determination module, used for:

[0035] Determine the maximum value of the second temperature within the first preset time period;

[0036] In response to the fact that the maximum value of the second temperature is less than a preset temperature threshold, the first temperature is compensated.

[0037] In any embodiment of this disclosure, when determining the compensation value for the first temperature based on the current information, the first temperature, and the second temperature, the compensation value determination module is specifically used for:

[0038] Determine the integral value of the current of the battery module within a first preset time period;

[0039] Based on the integral value of the current and the preset mapping relationship, a first compensation value for the first temperature is determined;

[0040] The average temperature difference between the first and second positions of multiple battery modules in the battery module is determined as the second compensation value of the first temperature.

[0041] The compensation value for the first temperature is determined based on the comparison result between the first compensation value and the second compensation value.

[0042] In conjunction with any embodiment of this disclosure, when the temperature compensation module compensates for the first temperature according to the compensation value of the first temperature to obtain the compensated temperature at the first position, it is specifically used for:

[0043] According to a first preset rate, the first temperature is adjusted to the compensation temperature and maintained at the compensation temperature for a preset duration.

[0044] In conjunction with any embodiment of this disclosure, after adjusting the first temperature to the compensated temperature according to a first preset rate, the device further includes a compensation recovery module, used for:

[0045] If the compensation time for the first temperature exceeds the preset duration, or if the maximum value of the second temperature of the battery module is greater than or equal to a preset temperature threshold, the compensation temperature is adjusted to the first temperature according to a second preset rate, wherein the first preset rate is greater than the second preset rate.

[0046] In conjunction with any embodiment of this disclosure, when the temperature compensation module adjusts the first temperature to the compensation temperature according to a first preset rate, it is specifically used for:

[0047] In response to the fact that the current integral value of the battery module is greater than or equal to a preset integral threshold within the preset time period, and the maximum value of the second temperature of the battery module is less than a preset temperature threshold, the compensation time for the first temperature is re-timed.

[0048] In conjunction with any embodiment of this disclosure, after acquiring the current information of the battery module, and the first temperature at the first location of the battery module and the second temperature at the second location of the battery module, the device further includes a temperature correction module, used for:

[0049] In response to the first temperature being lower than the second temperature, the first temperature is adjusted to the second temperature.

[0050] According to a third aspect of the present disclosure, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps of the method described in any of the embodiments of the first aspect.

[0051] According to a fourth aspect of the present disclosure, an electronic device is provided, comprising:

[0052] Memory for storing processor-executable instructions;

[0053] The processor is configured to execute executable instructions in the memory to implement the steps of the method described in any of the first aspects above.

[0054] The technical solutions provided in this disclosure may have the following beneficial effects:

[0055] By using the current information of the battery module, the first temperature at the positive electrode position and the second temperature at the second position, the compensation value of the positive electrode position of the battery module is determined and compensation is performed. This reduces the fluctuation impact of current instability on the temperature acquisition value of the positive electrode position of the battery module, improves the reliability of the first temperature acquisition value and the operating effect of the battery management system, and reduces the safety hazards of the battery module in a timely manner.

[0056] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0057] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0058] Figure 1 This disclosure is a flowchart illustrating a battery temperature control method according to an exemplary embodiment;

[0059] Figure 2 This is a schematic diagram illustrating another battery temperature control method according to an exemplary embodiment of the present disclosure;

[0060] Figure 3 This is a schematic diagram illustrating another battery temperature control method according to an exemplary embodiment of the present disclosure;

[0061] Figure 4 This disclosure illustrates another battery temperature control method according to an exemplary embodiment;

[0062] Figure 5 This is a schematic diagram of a battery temperature control device according to an exemplary embodiment of the present disclosure;

[0063] Figure 6This is a schematic diagram of another battery temperature control device according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0064] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0065] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0066] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0067] In current battery temperature acquisition methods, the collected positive electrode temperature is primarily used as the battery cell temperature. However, when the solution disclosed herein is applied to vehicle battery control, in applications such as electric vehicles with small battery capacities and complex and variable battery operating conditions, if the user drives the vehicle aggressively, the positive electrode current of the vehicle battery may exhibit pulse characteristics. This causes the collected value of the positive electrode to rise rapidly, and the change pattern is unstable, failing to accurately reflect the actual temperature of the battery cell. Therefore, this application provides a battery temperature control method to solve the above problems.

[0068] The solution described in this disclosure can be applied to a battery management system. For example, when the method is used to control the temperature of a vehicle battery, the solution described in this disclosure can be set in the main board of the vehicle's battery management system. In addition, the method described in this disclosure can also be used to control the battery temperature of equipment such as ships and power stations, and this disclosure does not limit it.

[0069] Figure 1A flowchart illustrating a battery temperature control method according to an exemplary embodiment of this disclosure is shown.

[0070] In step S101, the current information of the battery module, as well as the first temperature at the first position of the battery module and the second temperature at the second position of the battery module are obtained, wherein the first position represents the positive electrode position of the battery module, and the relationship between the second position and the first position satisfies a preset condition.

[0071] The battery is composed of multiple battery modules, and the current information of each battery module represents the current value within that module. Optionally, real-time current information within the battery module can be collected using a current sensor. The first temperature at the first location of the battery module represents the temperature of the positive electrode of the battery module, and the second location of the battery module can be set according to actual needs.

[0072] For example, the preset conditions can be determined based on the temperature difference or stability difference with the first position. For instance, since the temperature at the middle position of the battery module is less affected by the current fluctuation and is more stable, and the temperature difference with the first temperature at the positive electrode position is larger, the second position can be determined as the middle position of the battery module.

[0073] Optional, such as Figure 2 As shown, the temperature of the first position 201 and the second position 202 can be collected by the temperature sensor 200 in the battery module.

[0074] Figure 3 The present disclosure illustrates a schematic diagram of a battery temperature control structure according to an exemplary embodiment, as shown below. Figure 3 As shown, the battery management system motherboard 301 obtains the first temperature and the second temperature collected by the temperature sensor 200 through the battery management system acquisition board 302, and obtains the current information of the battery module through the current sensor 303.

[0075] In step S102, a compensation value for the first temperature is determined based on the current information, the first temperature, and the second temperature.

[0076] Typically, when the current of the battery module changes drastically, the collected value of the first temperature usually rises rapidly and exhibits an unstable pattern of change. For example, when the solution described in this disclosure is applied to an electric vehicle battery, if the user engages in aggressive driving behaviors such as rapid acceleration or deceleration, the positive electrode temperature of the battery module will usually rise rapidly due to large current fluctuations. This causes the collected value of the first temperature to fail to accurately reflect the actual current battery temperature. The current information of the battery module and the second temperature at the second location can be used as the compensation parameters. For example, the compensation value of the first temperature can be determined by the real-time status of the current in the battery module within a preset time period, or by the difference between the first temperature and the second temperature.

[0077] In step S103, the first temperature is compensated according to the compensation value of the first temperature to obtain the compensated temperature of the first position.

[0078] After obtaining the compensation value of the first temperature, the first temperature can be compensated according to the compensation value of the first temperature, that is, the sampling temperature at the positive electrode position in the battery module can be adjusted so that the first temperature can reduce the impact of current fluctuation on the sampling temperature value at the positive electrode position of the battery module through temperature compensation, thereby improving the reliability of the sampling value of the first temperature.

[0079] Optionally, after obtaining the compensated temperature at the first location, the battery management system motherboard can perform temperature strategy management operations such as thermal management on the battery module based on the compensated temperature. For example, when the compensated temperature reaches a high temperature warning value, the fan or cooling water channel is controlled to cool the battery module; when the compensated temperature reaches a low temperature warning value, the heating module is controlled to heat the battery module, so that the temperature of the battery module is kept in the optimal range.

[0080] The solution described in this disclosure determines and compensates for the positive electrode position of the battery module by using the current information of the battery module, the first temperature at the positive electrode position, and the second temperature at the second position. This reduces the fluctuation impact of current instability on the temperature acquisition value of the positive electrode position of the battery module, improves the reliability of the first temperature acquisition value and the operating effect of the battery management system, and promptly reduces the safety hazards of the battery module.

[0081] In an optional embodiment, before compensating the first temperature according to the compensation value of the first temperature, the method may further include the following steps:

[0082] First, the integral value of the current of the battery module is determined within a first preset time period.

[0083] Optionally, the integral value of the current can be determined using the following formula:

[0084] Q=∫I 2 dt (1)

[0085] In formula (1), Q represents the integral value of the current, I 2 The first preset time interval, which represents the square of the current in the battery module, can be determined according to actual needs. For example, the first preset time interval can be set to 180 seconds, that is, the integral value of the current Q for the first preset time interval is determined every 180 seconds.

[0086] Subsequently, in response to the current integral value being greater than or equal to a preset integral threshold, compensation is performed on the first temperature.

[0087] Optionally, if the current integral value is greater than or equal to the preset integral value, it indicates that the current battery module is in a complex operating condition. For example, when the solution described in this disclosure is applied to an electric vehicle battery, the current integral value being greater than or equal to the preset integral value can be used to determine that the user is currently engaging in aggressive driving behavior. At this time, the first temperature at the positive electrode of the battery module rises rapidly and cannot accurately reflect the actual temperature of the current battery cell. Compensation for the first temperature can be activated in a timely manner to improve the reliability of the first temperature acquisition value.

[0088] The solution described in this disclosure initiates a compensation process for the first temperature when the integral value of the current within a first preset time period is greater than or equal to a preset integral threshold. This allows for timely compensation of the first temperature when the battery module current fluctuates significantly, thereby improving the reliability of the first temperature acquisition value.

[0089] In the above embodiments, preferably, the maximum value of the second temperature within the first preset time period can be determined when the current integral value is greater than or equal to a preset integral value, and the first temperature can be compensated in response to the maximum value of the second temperature being less than a preset temperature threshold.

[0090] The preset temperature threshold can be set according to actual needs. For example, if the second temperature represents the temperature at the middle position of the battery module, the preset temperature threshold can be set to the maximum temperature value that the current battery module can withstand. If the maximum value of the second temperature is less than the preset temperature, it indicates that the current battery module is operating normally, and the temperature compensation scheme can continue to be executed. However, if the maximum value of the second temperature is greater than or equal to the preset temperature, it indicates that the current battery module's operating temperature exceeds the normal temperature range, and the temperature compensation scheme can be paused, with priority given to detecting the operating status of the battery module.

[0091] The solution described in this disclosure initiates a compensation process for the first temperature when the maximum value of the second temperature is less than a preset temperature threshold, ensuring that the cell temperature of the battery module does not exceed the preset temperature threshold during the temperature compensation process, thereby improving the safety of the battery module.

[0092] In an optional embodiment, this disclosure provides a preferred solution for step S102, "determining a compensation value for the first temperature based on the current information, the first temperature, and the second temperature," such as... Figure 4 As shown, the specific steps include S102A to S102D.

[0093] In step S102A, the integral value of the current of the battery module within the first preset time period is determined.

[0094] Optionally, the integral value of the current can be determined using formula (1):

[0095] Q=∫I 2 dt (1)

[0096] In formula (1), Q represents the integral value of the current, I 2 The first preset time can be determined according to actual needs, representing the square value of the current in the battery module.

[0097] In step S102B, a first compensation value for the first temperature is determined based on the current integral value and a preset mapping relationship.

[0098] Optionally, the preset mapping relationship can be a correspondence between the current integral value and the first compensation value. For example, the first compensation value can be determined based on the interval in which the current integral value falls. Optionally, the first compensation value can be determined using the following table:

[0099] Current integral value Q Q < A A≤Q<A1 A1≤Q<A2 A2≤Q <![CDATA[First compensation value TΔ1]]> 0℃ 2℃ 3℃ 5℃ (1)

[0101] In Table (1), the data shown are merely exemplary reference values. A, A1, A2, and the corresponding first compensation value TΔ1 can be set according to actual needs. When the current integral value is in different preset ranges, the corresponding temperature is selected as the first compensation value. As the current integral value increases, it indicates that the current instability of the current module increases. The first temperature at the positive electrode of the battery module cannot accurately reflect the actual temperature of the current battery cell. The reliability of the compensated first temperature can be improved by increasing the first compensation value accordingly.

[0102] In step S102C, the average value of the temperature difference between the first position and the second position of the multiple battery modules in the battery module is determined as the second compensation value of the first temperature.

[0103] Optionally, since the first position, i.e. the positive electrode position of the battery module, usually produces a rapid increase in temperature and an unstable change pattern when the current of the battery module changes drastically, the second temperature of another position of the battery module, such as the temperature of the middle position of the battery module, can be used as a reference temperature to determine the second compensation value.

[0104] Optionally, the integral value of the current can be determined using the following formula:

[0105]

[0106] In formula (2), TΔ2 represents the second compensation value, T1-T2 represents the temperature difference between the first and second positions of the battery module, and "effective module quantity" represents the number of battery modules in the current battery module that are all in normal operating condition. By using a relatively stable second temperature as a reference value and taking the average temperature difference between the first and second positions of each module in the current battery module as the second compensation value, the reliability of the compensated first temperature can be improved.

[0107] In step S102D, the compensation value for the first temperature is determined based on the comparison result between the first compensation value and the second compensation value.

[0108] Optionally, the first compensation value and the second compensation value can be compared and processed according to the specific application scenario and battery operating conditions, and the compensation value for the first temperature can be determined based on the comparison result. For example, the smaller value between the first compensation value and the second compensation value can be determined as the compensation value for the first temperature, so that the difference between the compensated temperature and the first temperature is small, avoiding excessive changes in the first temperature value received by the battery management system motherboard.

[0109] The solution described in this disclosure further reduces the impact of current instability on the temperature acquisition value at the positive electrode of the battery module by determining a first compensation value and a second compensation value respectively, and determining the compensation value of the first temperature based on the comparison result. This improves the reliability of the first temperature acquisition value and the operating effect of the battery management system, and reduces the safety hazards of the battery module in a timely manner.

[0110] In an optional embodiment, the step of compensating the first temperature based on the compensation value of the first temperature to obtain the compensated temperature at the first location includes:

[0111] According to a first preset rate, the first temperature is adjusted to the compensation temperature and maintained at the compensation temperature for a preset duration.

[0112] The first preset rate and the preset duration can be set according to actual needs. In one example, the first temperature can be adjusted to the compensation temperature at a rate of 5°C / min, and the compensation time can be maintained for 30 minutes.

[0113] Optionally, the compensation temperature can be determined using the following formula:

[0114] T after =T1-T Δ (3)

[0115] In formula (3), T after The table shows the compensation temperatures, where T1 represents the first temperature, and T... Δ The compensation value is used to represent the compensation temperature, which is obtained by subtracting the compensation value from the first temperature. This can prevent the first temperature from failing to accurately reflect the actual temperature of the current battery cell due to the excessively high temperature of the positive electrode of the battery module, thus affecting the effective operation of the battery management system.

[0116] In another optional embodiment, after adjusting the first temperature to the compensated temperature according to a first preset rate, the method further includes:

[0117] If the compensation time for the first temperature exceeds the preset duration, or if the maximum value of the second temperature of the battery module is greater than or equal to a preset temperature threshold, the compensation temperature is adjusted to the first temperature according to a second preset rate, wherein the first preset rate is greater than the second preset rate.

[0118] Specifically, after compensating for the first temperature, the compensated temperature can be adjusted back to the first temperature, i.e., the compensation for the first temperature can be canceled, provided that any of the following conditions are met:

[0119] First: The duration after compensating for the first temperature exceeds the preset duration.

[0120] The preset duration can be set according to actual needs. For example, when the solution described in this disclosure is applied to an electric vehicle battery, the duration of a user’s typical aggressive driving can be determined through experiments, and the duration can be set as the preset duration. After the duration of the first temperature compensation exceeds the preset duration, it can be determined that the user has ended the aggressive driving behavior, and the compensated temperature can be restored to the first temperature.

[0121] Second: The maximum value of the second temperature of the battery module is greater than or equal to the preset temperature threshold.

[0122] The preset temperature threshold can be set according to actual needs. For example, if the second temperature represents the temperature at the middle position of the battery module, the preset temperature threshold can be set to the maximum temperature value that the current battery can withstand. If the maximum value of the second temperature is greater than or equal to the preset temperature, it indicates that the operating temperature of the current battery module exceeds the normal temperature range. In this case, the compensation temperature can be restored to the first temperature, and the operating status of the battery module can be detected first.

[0123] Furthermore, during the process of canceling the compensation for the first temperature, the compensation temperature can be adjusted to the first temperature according to the second preset rate. The first preset rate is greater than the second preset rate, that is, the speed of compensating and adjusting the first temperature is greater than the speed of restoring the compensation temperature to the first temperature, so that the positive electrode temperature of the battery module can be compensated in a timely manner.

[0124] The solution described in this disclosure adjusts the first temperature to the compensation temperature according to a first preset rate and maintains the compensation temperature for a preset duration. If the compensation time for the first temperature exceeds the preset duration, or if the maximum value of the second temperature of the battery module is greater than or equal to a preset temperature threshold, the compensation temperature is adjusted to the first temperature according to a second preset rate, so that the compensation temperature can be restored to the first temperature in a timely manner under the condition that it meets the requirements.

[0125] In an optional embodiment, adjusting the first temperature to the compensated temperature according to a first preset rate includes:

[0126] In response to the fact that the current integral value of the battery module is greater than or equal to a preset integral threshold within the preset time period, and the maximum value of the second temperature of the battery module is less than a preset temperature threshold, the compensation time for the first temperature is re-timed.

[0127] Specifically, during the process of adjusting the first temperature to the compensated temperature and maintaining the compensated temperature for a preset time, if the integral value of the current of the battery module is greater than or equal to a preset integral threshold and the maximum value of the second temperature of the battery module is less than a preset temperature threshold, it indicates that the current state of the current of the battery module is still unstable. For example, when the solution described in this disclosure is applied to an electric vehicle battery, if the user has already enabled temperature compensation and is still driving aggressively after a certain period of time, and the current maximum temperature of the battery module is still within the normal range, the compensation time for the first temperature can be extended by re-timing the first temperature.

[0128] For example, if the integral current value of the battery module within 180 seconds is greater than or equal to a preset integral threshold, a temperature compensation process lasting 30 minutes is initiated. During the temperature compensation process, if the integral current value of the battery module within the next 180 seconds is still greater than or equal to the preset integral threshold, the compensation time for the first temperature is reset, i.e., the compensation time for the first temperature is reset, so that the battery module restores the compensated temperature to the first temperature 30 minutes after the current time, and the current integral value of the battery module within the next 180-second time period is continuously detected during the compensation process.

[0129] The solution described in this disclosure re-timing the compensation time for the first temperature when the integral value of the current of the battery module is greater than or equal to a preset integral threshold and the maximum value of the second temperature of the battery module is less than a preset temperature threshold, so that the positive electrode position of the battery module can obtain sufficient temperature compensation for a timely duration while still meeting the temperature compensation conditions, thereby reducing the fluctuation impact of current instability on the temperature acquisition value of the positive electrode position of the battery module and improving the reliability of the first temperature acquisition value.

[0130] In an optional embodiment, after acquiring the current information of the battery module, and the first temperature at the first location of the battery module and the second temperature at the second location of the battery module, the method further includes:

[0131] In response to the first temperature being lower than the second temperature, the first temperature is adjusted to the second temperature.

[0132] Specifically, the first temperature represents the temperature at the positive electrode of the battery module. Under complex operating conditions, the first temperature rises rapidly, making it greater than or equal to a second temperature measured at other locations on the battery module. If the first temperature is lower than the second temperature, it indicates that the current temperature sensor may have measurement errors during temperature measurement. Therefore, the first temperature can be adjusted to the second temperature to ensure that the positive electrode temperature of the battery module is not lower than the second temperature.

[0133] The solution described in this disclosure improves the reliability of the first temperature acquisition value by adjusting the first temperature to the second temperature when the first temperature is lower than the second temperature.

[0134] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should know that this disclosure is not limited to the described order of actions, because according to this disclosure, some steps may be performed in other orders or simultaneously.

[0135] Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by this disclosure.

[0136] Corresponding to the aforementioned application function implementation method embodiments, this disclosure also provides embodiments of application function implementation apparatus and corresponding terminals.

[0137] A block diagram of a battery temperature control device shown in an exemplary embodiment of this disclosure is as follows: Figure 5 As shown, the device is applied to a terminal device and includes:

[0138] The information acquisition module 501 is used to: acquire the current information of the battery module, as well as the first temperature at the first position of the battery module and the second temperature at the second position of the battery module, wherein the first position represents the positive electrode position of the battery module, and the relationship between the second position and the first position satisfies a preset condition;

[0139] The compensation value determination module 502 is used to: determine the compensation value of the first temperature based on the current information, the first temperature and the second temperature;

[0140] The temperature compensation module 503 is used to: compensate the first temperature according to the compensation value of the first temperature to obtain the compensated temperature of the first position.

[0141] In any embodiment of this disclosure, before the compensation value determination module compensates the first temperature according to the compensation value of the first temperature, the device further includes an integral determination module, used for:

[0142] Determine the integral value of the current of the battery module within a first preset time period;

[0143] In response to the current integral value being greater than or equal to a preset integral threshold, compensation is applied to the first temperature.

[0144] In conjunction with any embodiment of this disclosure, when the integral value of the current is greater than or equal to a preset integral value, the device further includes a maximum temperature determination module, used for:

[0145] Determine the maximum value of the second temperature within the first preset time period;

[0146] In response to the fact that the maximum value of the second temperature is less than a preset temperature threshold, the first temperature is compensated.

[0147] In any embodiment of this disclosure, when determining the compensation value for the first temperature based on the current information, the first temperature, and the second temperature, the compensation value determination module is specifically used for:

[0148] Determine the integral value of the current of the battery module within a first preset time period;

[0149] Based on the integral value of the current and the preset mapping relationship, a first compensation value for the first temperature is determined;

[0150] The average temperature difference between the first and second positions of multiple battery modules in the battery module is determined as the second compensation value of the first temperature.

[0151] The compensation value for the first temperature is determined based on the comparison result between the first compensation value and the second compensation value.

[0152] In conjunction with any embodiment of this disclosure, when the temperature compensation module compensates for the first temperature according to the compensation value of the first temperature to obtain the compensated temperature at the first position, it is specifically used for:

[0153] According to a first preset rate, the first temperature is adjusted to the compensation temperature and maintained at the compensation temperature for a preset duration.

[0154] In conjunction with any embodiment of this disclosure, after adjusting the first temperature to the compensated temperature according to a first preset rate, the device further includes a compensation recovery module, used for:

[0155] If the compensation time for the first temperature exceeds the preset duration, or if the maximum value of the second temperature of the battery module is greater than or equal to a preset temperature threshold, the compensation temperature is adjusted to the first temperature according to a second preset rate, wherein the first preset rate is greater than the second preset rate.

[0156] In conjunction with any embodiment of this disclosure, when the temperature compensation module adjusts the first temperature to the compensation temperature according to a first preset rate, it is specifically used for:

[0157] In response to the fact that the current integral value of the battery module is greater than or equal to a preset integral threshold within the preset time period, and the maximum value of the second temperature of the battery module is less than a preset temperature threshold, the compensation time for the first temperature is re-timed.

[0158] In conjunction with any embodiment of this disclosure, after acquiring the current information of the battery module, and the first temperature at the first location of the battery module and the second temperature at the second location of the battery module, the device further includes a temperature correction module, used for:

[0159] In response to the first temperature being lower than the second temperature, the first temperature is adjusted to the second temperature.

[0160] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this disclosure according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0161] Corresponding to the embodiments of the foregoing methods, this specification also provides embodiments of the apparatus and the terminal to which it is applied.

[0162] The embodiments of the document processing apparatus described in this specification can be applied to computer devices, such as servers or terminal devices. The apparatus embodiments can be implemented through software, hardware, or a combination of both. Taking software implementation as an example, as a logically defined apparatus, it is formed by the processor in which it processes the file, reading the corresponding computer program instructions from non-volatile memory into memory for execution. From a hardware perspective, such as... Figure 6 The diagram shown is a hardware structure diagram of a computer device containing the file processing apparatus as described in this specification, except... Figure 6 In addition to the processor 610, memory 630, network interface 620, and non-volatile memory 640 shown, the server or electronic device in which the device is located in the embodiment may also include other hardware depending on the actual function of the computer device, which will not be described in detail here.

[0163] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0164] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A battery temperature control method, characterized in that, The method includes: The current information of the battery module is obtained, as well as the first temperature at the first position of the battery module and the second temperature at the second position of the battery module. The first position represents the positive electrode position of the battery module, and the relationship between the second position and the first position satisfies a preset condition. The preset condition is to determine the second position as the position with stable temperature or with a large temperature difference from the first position. Based on the current information, the first temperature, and the second temperature, a compensation value for the first temperature is determined, including: determining the integral current value of the battery module within a first preset time period; determining a first compensation value for the first temperature based on the integral current value and a preset mapping relationship; determining the average temperature difference between the first and second positions of multiple battery modules in the battery module as a second compensation value for the first temperature; and determining the compensation value for the first temperature based on the smaller of the first compensation value and the second compensation value. The first temperature is compensated based on the compensation value of the first temperature to obtain the compensated temperature at the first position.

2. The method according to claim 1, characterized in that, Before compensating the first temperature according to the compensation value of the first temperature, the method further includes: Determine the integral value of the current of the battery module within a first preset time period; In response to the current integral value being greater than or equal to a preset integral threshold, compensation is applied to the first temperature.

3. The method according to claim 2, characterized in that, If the integral value of the current is greater than or equal to a preset integral value, the method further includes: Determine the maximum value of the second temperature within the first preset time period; In response to the fact that the maximum value of the second temperature is less than a preset temperature threshold, the first temperature is compensated.

4. The method according to any one of claims 1 to 3, characterized in that, The step of compensating the first temperature based on the compensation value of the first temperature to obtain the compensated temperature at the first position includes: According to a first preset rate, the first temperature is adjusted to the compensation temperature and maintained at the compensation temperature for a preset duration.

5. The method according to claim 4, characterized in that, After adjusting the first temperature to the compensated temperature according to the first preset rate, the method further includes: If the compensation time for the first temperature exceeds the preset duration, or if the maximum value of the second temperature of the battery module is greater than or equal to a preset temperature threshold, the compensation temperature is adjusted to the first temperature according to a second preset rate, wherein the first preset rate is greater than the second preset rate.

6. The method according to claim 4, characterized in that, The step of adjusting the first temperature to the compensated temperature according to the first preset rate includes: In response to the fact that the current integral value of the battery module is greater than or equal to a preset integral threshold within the preset time period, and the maximum value of the second temperature of the battery module is less than a preset temperature threshold, the compensation time for the first temperature is re-timed.

7. The method according to claim 1, characterized in that, After acquiring the current information of the battery module, and the first temperature at the first location of the battery module and the second temperature at the second location of the battery module, the method further includes: In response to the first temperature being lower than the second temperature, the first temperature is adjusted to the second temperature.

8. A battery temperature control device, characterized in that, The device includes: The information acquisition module is used to: acquire the current information of the battery module, as well as the first temperature at the first position of the battery module and the second temperature at the second position of the battery module, wherein the first position represents the positive electrode position of the battery module, and the relationship between the second position and the first position satisfies the preset condition, wherein the preset condition is to determine the second position as the position with stable temperature or with a large temperature difference from the first position. The compensation value determination module is used to: determine a compensation value for the first temperature based on the current information, the first temperature, and the second temperature; including: determining the integral value of the current of the battery module within a first preset time period; determining a first compensation value for the first temperature based on the integral value of the current and a preset mapping relationship; determining the average value of the temperature difference between a first position and a second position of a plurality of battery modules in the battery module as a second compensation value for the first temperature; and determining the compensation value for the first temperature based on the smaller value between the first compensation value and the second compensation value. The temperature compensation module is used to: compensate the first temperature according to the compensation value of the first temperature to obtain the compensated temperature at the first position.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

10. An electronic device, characterized in that, The electronic device includes: Memory is used to store processor-executable instructions; A processor is configured to execute executable instructions in the memory to implement the steps of the method according to any one of claims 1 to 7.

Images