Cooling Method of Battery, Controller and Battery Cooling System

Abstract

An embodiment of the present application provides a battery cooling method, a controller, and a battery cooling system. The method is applied to a battery cooling system for cooling a battery. The battery cooling system is provided with a preset number of twisted tapes, and the twisted tapes are used to generate disturbances to the coolant. The method includes: determining a target twist rate corresponding to a target monitoring point based on the temperature information of the target monitoring point on the battery; wherein the target monitoring point is the monitoring point where the preset number of twisted tapes are located; controlling the twisted tapes at each target monitoring point to twist at the target twist rate corresponding to each target monitoring point respectively. This method is used to enhance the cooling effect on the battery.

Description

Technical Field

[0001] The present application relates to the technical field of battery thermal management, and particularly to a battery cooling method, a controller, and a battery cooling system. Background Art

[0002] With the development of the new energy field, new energy vehicles are increasingly favored by users. New energy vehicles usually use power batteries to provide power for the vehicle, and power batteries are usually in the form of battery packs as part of the vehicle device.

[0003] For new energy vehicles, the charging and discharging of battery packs undoubtedly take more time. The fast pace of modern society makes it increasingly difficult for people to tolerate the long charging time of electric vehicles. The essential requirement of users for "charging as fast as refueling" has prompted new energy vehicle enterprises to develop the fast charging ability of batteries. However, a high battery fast charging rate doubles the heat generation of the battery, resulting in a relatively high local temperature and a large temperature difference of the battery pack, which has an adverse impact on battery consistency and battery life, and even causes dangerous phenomena such as thermal runaway and thermal diffusion.

[0004] In related technologies, direct cooling with a refrigerant is used to achieve battery thermal management for the battery pack. However, in this related technology, there is a problem of poor cooling effect on the battery. Summary of the Invention

[0005] Embodiments of the present application provide a battery cooling method, a controller, and a battery cooling system to improve the cooling effect on the battery.

[0006] In a first aspect, an embodiment of the present application provides a battery cooling method, which is applied to a battery cooling system for cooling a battery. The battery cooling system is provided with a preset number of twisted tapes, and the twisted tapes are used to generate disturbances to the coolant. The method includes:

[0007] Based on the temperature information of a target monitoring point on the battery, determine the target twist rate corresponding to the target monitoring point; wherein, the target monitoring point is the monitoring point where the preset number of twisted tapes are located;

[0008] Control the twisted tapes at each target monitoring point to twist at the target twist rate corresponding to each target monitoring point respectively.

[0009] In a possible implementation manner, the method further includes:

[0010] Determine the temperature information of a plurality of original monitoring points on the battery, wherein the number of the plurality of original monitoring points is greater than the preset number;

[0011] According to the temperature information of the plurality of original monitoring points, determine a preset number of target monitoring points from the plurality of original monitoring points, and control the preset number of twisted tapes to move to the preset number of target monitoring points respectively.

[0012] In a possible implementation, the temperature information includes: a temperature value and a temperature rise rate;

[0013] Determining a preset number of target monitoring points from multiple original monitoring points according to the temperature information of the multiple original monitoring points includes:

[0014] Based on the temperature values of the multiple original monitoring points and the temperature rise rates of the multiple original monitoring points, determining the temperature monitoring data of the multiple original monitoring points;

[0015] Obtaining a numerical descending order of the temperature monitoring data of the multiple original monitoring points;

[0016] Taking the original monitoring points located before the preset number in the numerical descending order as the target monitoring points.

[0017] In a possible implementation, based on the temperature values of the multiple original monitoring points and the temperature rise rates of the multiple original monitoring points, determining the temperature monitoring data of the multiple original monitoring points includes:

[0018] Obtaining a preset temperature ratio parameter for the temperature monitoring data;

[0019] For any one of the original monitoring points, based on the temperature ratio parameter, performing a fusion process on the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point to obtain the temperature monitoring data of the original monitoring point.

[0020] In a possible implementation, based on the temperature ratio parameter, performing a fusion process on the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point to obtain the temperature monitoring data of the original monitoring point includes:

[0021] Adding the product of the temperature rise rate and the temperature ratio parameter to the temperature value to obtain the temperature monitoring data of the original monitoring point;

[0022] Wherein, the product of the temperature rise rate and the temperature ratio parameter is less than the temperature value.

[0023] In a possible implementation, determining the temperature information of multiple original monitoring points on the battery includes:

[0024] In the current adjustment cycle, obtaining the temperature information of multiple original monitoring points determined on the battery; wherein, the current adjustment cycle is a cycle for adjusting the position and / or the twist rate of the twisted tape;

[0025] After the step of controlling the twisted tapes of the respective monitoring points to be twisted at the twist rates respectively corresponding to the respective target monitoring points, when the next adjustment cycle of the current adjustment cycle is reached after a preset time, returning to the step of obtaining the temperature information of multiple original monitoring points on the battery.

[0026] In a possible implementation, the temperature information includes: a temperature value and a temperature rise rate;

[0027] The target torque is negatively correlated with the temperature value and negatively correlated with the temperature rise rate.

[0028] In a possible implementation, determining the target torque corresponding to the target monitoring point based on the temperature information of the target monitoring point on the battery includes:

[0029] Based on the temperature value of the target monitoring point and a preset temperature threshold, and the temperature rise rate of the target monitoring point and a preset temperature rise rate threshold, determining the target torque corresponding to the target monitoring point respectively.

[0030] In a possible implementation, based on the temperature value of the target monitoring point and a preset temperature threshold, and the temperature rise rate of the target monitoring point and a preset temperature rise rate threshold, determining the target torque corresponding to the target monitoring point respectively includes:

[0031] If the temperature value is greater than the temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, then determining the target torque as the first torque;

[0032] If the temperature value is greater than the temperature threshold and the temperature rise rate is less than the temperature rise rate threshold, then determining the target torque as the second torque;

[0033] If the temperature value is less than the temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, then determining the target torque as the third torque;

[0034] If the temperature value is less than the temperature threshold and the temperature rise rate is less than the temperature rise rate threshold, then determining the target torque as the fourth torque;

[0035] Wherein, the torques are in descending order: the fourth torque, the third torque, the second torque, and the first torque.

[0036] In a second aspect, an embodiment of the present application provides a controller for a battery cooling system, including: a memory and a processor;

[0037] The memory stores computer-executable instructions;

[0038] The processor executes the computer-executable instructions stored in the memory, so that the processor executes various possible implementations of the method as described above.

[0039] In a third aspect, an embodiment of the present application provides a battery cooling system, including:

[0040] A battery, with a coolant for cooling the battery disposed on the periphery;

[0041] A preset number of twisted bands for disturbing the coolant.

[0042] In a possible implementation, the system further includes:

[0043] a driving device for moving and / or twisting the twisted belt;

[0044] a controller connected to the driving device, and the controller is configured to determine a target twist rate corresponding to a target monitoring point based on the temperature information of the target monitoring point on the battery; the target twist rate is used to indicate the twisting of the twisted belt at the target monitoring point.

[0045] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement various possible implementations of the method as described above.

[0046] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements various possible implementations of the method as described above.

[0047] The battery cooling method, controller, and battery cooling system provided by the embodiments of the present application can generate perturbations to the coolant in the battery cooling system by arranging a preset number of twisted belts in the battery cooling system, so as to achieve a better cooling effect. And the present application determines the target twist rate corresponding to the target monitoring point based on the temperature information of the target monitoring point, and controls the twisted belts at each target monitoring point to be twisted to the corresponding target twist rate, so as to ensure rapid cooling of the high-temperature area, reduce the temperature difference between the monitoring points of the battery, improve the cooling effect of the battery, and also improve the service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0049] Figure 1 is a schematic structural diagram of the twisted belt provided by the present application;

[0050] Figure 2 is a schematic structural diagram of the battery cooling system 20 provided by the present application;

[0051] Figure 3 is a schematic flow chart of the battery cooling method provided by the present application Figure 1 ;

[0052] Figure 4 is a schematic flow chart of the battery cooling method provided by the present application Figure 2 ;

[0053] Figure 5Flow schematic of the battery cooling method provided by this application Figure 3 ;

[0054] Figure 6 Flow schematic of the battery cooling method provided by this application Figure 4 ;

[0055] Figure 7 Structural schematic diagram of the battery cooling device provided by this application;

[0056] Figure 8 Structural schematic diagram of the controller of the battery cooling system provided by this application for this application.

[0057] Through the above-mentioned drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Specific embodiments

[0058] In order to make the purpose, technical solutions and advantages of this application clearer and more understandable, exemplary embodiments will be described in detail here, and their examples are shown in the drawings. When the following description involves the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. On the contrary, they are only examples of devices and implementation manners consistent with some aspects of this application as detailed in the appended claims. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0059] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and above-mentioned drawings of this application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application described here, for example, can be implemented in an order other than those illustrated or described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a series of units, systems, products or devices included do not necessarily have to be limited to those clearly listed, but may include units not clearly listed or inherent to these products or devices.

[0060] With the development of the new energy field, new energy vehicles are increasingly favored by users. New energy vehicles usually use power batteries to provide power for the vehicle, and power batteries are usually in the form of battery packs as part of the vehicle device.

[0061] For new energy vehicles, the charging and discharging of the battery pack undoubtedly takes more time. The fast pace of modern society makes it increasingly difficult for people to tolerate the relatively long charging time of electric vehicles. The essential requirement of users for "fast charging like refueling" has given rise to the development of the fast charging ability of the battery by new energy vehicle enterprises. However, a relatively high battery fast charging rate doubles the heat generation of the battery, resulting in a relatively high local temperature and a large temperature difference in the battery pack, which has an adverse impact on battery consistency and battery life, and even triggers dangerous phenomena such as thermal runaway and thermal diffusion.

[0062] Therefore, it is necessary to improve the heat transfer performance inside the battery pack from the perspective of enhancing heat transfer and improve the cooling efficiency. Some battery packs are cooled by direct cooling with refrigerant. However, under the action of gravity, the refrigerant mostly exhibits a laminar flow distribution characteristic in the flow channel. The liquid phase part of the refrigerant deposits at the lower part of the flow channel and cannot fully contact the upper part of the flow channel, which limits the heat transfer coefficient inside the pipe and affects the cooling effect under the condition of high heat generation of the battery pack under fast charging conditions. In addition, the existing design lacks a targeted local cooling method for the situation where the local temperature of the battery pack becomes higher due to environmental changes, resulting in a relatively large temperature difference in the whole pack, and cannot fully contact the inner surface of the flow channel, affecting the heat exchange efficiency. In addition, when the local temperature of the battery pack changes due to the deterioration of the heat exchange environment and exceeds the optimal working temperature, there is still a lack of a specific method for targeted cooling of this part.

[0063] Based on this, in the related technologies of battery thermal management, there is at least a problem of poor cooling effect on the battery.

[0064] The battery cooling method provided by this application is provided with a preset number of twisted tapes in the battery cooling system, which can generate disturbances to the coolant in the battery cooling system through the twisted tapes, so as to achieve a better cooling effect. And this application determines the target twist rate corresponding to the target monitoring point through the temperature information of the target monitoring point, and controls the twisted tapes at each target monitoring point to be twisted to the corresponding target twist rate, so as to ensure rapid cooling of the high-temperature area and reduce the temperature difference between each monitoring point of the battery. By means of this technical means, the technical problem of how to improve the cooling effect on the battery is solved.

[0065] The technical solutions of this application and how the technical solutions of this application solve the above technical problems will be described in detail below with specific embodiments. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0066] Figure 1 It is a schematic structural diagram of the twisted tape provided by this application; as Figure 1As shown, the twisted tape can be arranged in the circulation pipeline of the coolant. By setting the twisted tape, the refrigerant can be forced to flow in a split and rotating manner within the flow channel according to the shape of the twisted tape, increasing the contact area with the inner wall of the flow channel; it can also increase the flow rate of the refrigerant by reducing the cross-sectional area within the flow channel; and it can generate eddy currents under the superposition of the axial flow velocity vector and the radial vector flowing along the twisted tape, breaking the flow boundary layer; in addition, the twisted tape can also act as a fin to increase the heat exchange area between the refrigerant and the outside. The above effects are all the reasons why the twisted tape can enhance heat transfer. By inserting the twisted tape into the flow channel, the surface heat transfer coefficient within the flow channel is increased, thereby increasing the heat transfer amount, improving the cooling effect, and further reducing the temperature of each battery cell.

[0067] Among them, please refer to Figure 1 , where H is the distance for the twisted tape to twist 180°, and D is the width of the twisted tape. The twist ratio of the twisted tape is the ratio between H and D.

[0068] Exemplarily, the smaller the twist ratio, the stronger the disturbing effect of the twisted tape on the refrigerant, and the better the heat transfer enhancement effect, but it will increase the flow resistance of the refrigerant within the flow channel to a certain extent. The present application provides a movable and telescopic twisted tape, which, in combination with the temperature monitoring device of the battery, intelligently regulates the temperature of the battery pack, reducing the temperature value and temperature difference of the battery pack.

[0069] Optionally, the twisted tape provided in the present application is made of a soft material with a small elastic modulus to facilitate the movement of the twisted tape within the flow channel or passing through the bent part of the flow channel.

[0070] Optionally, in the embodiment provided in the present application, a twisted tapes are arranged within the flow channel. The number of a can be determined through experiments according to the actual situation. It is necessary to avoid too few twisted tapes that cannot produce a good heat transfer enhancement effect, and also avoid too many twisted tapes that increase the flow resistance. For example, the number of a is 1 to 5.

[0071] Optionally, the twisted tape provided in the present application has a telescopic function itself to achieve different twist ratios b. For example, the range of the twist ratio b is 1 to 15. The smaller the twist ratio, the more intense the twisting degree of the twisted tape and the more intense the disturbing degree to the refrigerant.

[0072] In some embodiments, through the setting of the above-mentioned twisted tape, the twisted tape disturbs the coolant in the battery cooling system, thereby achieving a better cooling effect.

[0073] Figure 2 is the structural schematic diagram of the battery cooling system provided by the present application. The battery cooling system 20 includes:

[0074] The battery 201 is peripherally provided with a coolant 203 for cooling the battery 201.

[0075] Among them, the battery 201 here can be each battery in the battery pack, and a battery pack can include multiple series-connected single cells (single cells are also called battery cores).

[0076] A preset number of twist bands 202 are used to disturb the coolant 203.

[0077] For example, in the direct cooling method, the coolant 203 in the cooling pipe or cooling plate can be used to cool the battery 201, and the twist band 202 can be arranged in the pipeline of the coolant 203 to increase the disturbance to the coolant 203 and achieve a better cooling effect of the coolant 203 on the battery 201.

[0078] In practical applications, in the battery pack, the refrigerant or coolant such as ethylene glycol can be passed through by setting a cold plate or a cooling pipeline to cool the battery pack.

[0079] The purpose of the twist band provided in this application is to reduce the temperature inconsistency between the battery cores and lower the temperature in the high-temperature area. As an example, the twist band is not for a single cell. Here, the coolant is inside the battery pack and outside each battery core. The coolant cools each battery core in the battery pack in the flow channel, cold plate or other devices, and the twist band can move in the coolant.

[0080] As an example, the battery 201 cooling system further includes:

[0081] A driving device 204 for moving and / or twisting the twist band 202;

[0082] A controller 80 is connected to the driving device 204 to control the driving device 204 to move the twist band 202 or twist the twist band 202.

[0083] Figure 3 Schematic diagram of the flow of the battery cooling method provided in this application Figure 1 , as Figure 3 shown, taking this method applied to the controller 80 of the battery cooling system in Figure 2 as an example, this method includes S301 to S302, where:

[0084] S301. Based on the temperature information of the target monitoring point on the battery, determine the target twist rate corresponding to the target monitoring point; among them, the target monitoring point is the monitoring point where the preset number of twist bands are located.

[0085] Among them, the target monitoring point can be the monitoring point where the twisted tape is located. For example, the movement of the twisted tape can be pre-controlled to move to the area where the monitoring point where the twisted tape needs to be set is located, and then the monitoring point corresponding to this area can be used as the target monitoring point. The above-mentioned monitoring points can be determined based on the area where the battery needs to be cooled. It can be understood that the number of twisted tapes is a preset number, so the number of target monitoring points can also be this preset number.

[0086] The temperature information can be the temperature information determined based on the monitored temperature. For example, the temperature information can include the monitored temperature value, and can also include the temperature change rate, etc.; the temperature change rate includes the temperature rise rate, etc. The target twist rate refers to the twist rate that the twisted tape set at the target monitoring point should be set to. For example, if the target twist rate of target monitoring point 1 is twist rate a1, then the twisted tape A at target monitoring point 1 needs to be controlled to a twist rate of a1; if the target twist rate of target monitoring point 2 is twist rate a2, then the twisted tape B at target monitoring point 2 needs to be controlled to a twist rate of a2.

[0087] Exemplarily, the controller can obtain the temperature information of the original monitoring points monitored by the temperature monitoring device; and the controller can determine the target monitoring points from the original monitoring points, and can determine the target twist rate corresponding to the target monitoring points based on the temperature information of the target monitoring points.

[0088] For example, if the temperature value of the target monitoring point is greater than a certain temperature threshold, the controller can determine that the target twist rate corresponding to the target monitoring point should also be less than a certain twist rate threshold. In this way, it is possible to achieve faster cooling of the target monitoring point with a higher temperature value through a smaller twist rate.

[0089] As an example, different temperature information can correspond to different twist rates, that is to say, there is a corresponding relationship between temperature information and twist rate. After determining the temperature information of the target monitoring point, the target twist rate of the target monitoring point can be determined according to the corresponding relationship.

[0090] Through the above possible examples, the target twist rate corresponding to the target monitoring point can be effectively determined through the temperature information of the target monitoring points on the battery, which is beneficial to realizing the twist rate control of different twisted tapes, and further can reduce the temperature difference between different monitoring points while effectively and quickly cooling the battery.

[0091] S302. Control the twisted tapes of each target monitoring point to twist at the target twist rates corresponding to each target monitoring point respectively.

[0092] Exemplarily, after the controller determines the target twist rates corresponding to the respective target monitoring points, it can control the twisted bands at each target monitoring point through the driving device to twist according to the target twist rates corresponding to the respective target monitoring points, so as to achieve the cooling control of the target monitoring points, thereby effectively cooling the battery, making the battery have a better cooling effect, reducing the temperature difference in each area of the battery, and improving the battery life.

[0093] In practical applications, the present application can simultaneously monitor the temperature values and temperature rise rates of each temperature monitoring point in the battery. When the temperature of some areas in the battery is too high or abnormally rises due to excessive fast charging current, or rising ambient temperature, or deterioration of the heat exchange conditions at a certain place in the battery pack, the controller can issue an instruction to move a twisted bands to their corresponding positions respectively, and make the twist rates of the respective twisted bands match the temperature conditions and temperature rise conditions of their respective areas, thereby effectively reducing the temperature of these areas and narrowing the temperature difference of the entire pack.

[0094] It should be noted that in the related art, in the battery thermal management technology using direct cooling with refrigerant, there is still a lack of passive heat transfer enhancement methods such as inserting twisted bands in the flow channel. The technology of inserting twisted bands in the flow channel provided by the present application can effectively disturb the refrigerant, causing the flow pattern of the refrigerant in the flow channel to change from laminar flow to annular flow, thereby increasing the contact area between the refrigerant and the inner surface of the flow channel, increasing the surface heat transfer coefficient of the refrigerant on the inner side of the flow channel, and increasing the heat exchange amount, which can effectively reduce the temperature of the battery pack under fast charging conditions and high heat generation situations.

[0095] In this embodiment, the cooling method of the battery provided by the present application can set a preset number of twisted bands in the battery cooling system, and the twisted bands can disturb the coolant in the battery cooling system, thereby achieving a better cooling effect. And the present application determines the target twist rate corresponding to the target monitoring point through the temperature information of the target monitoring point, and controls the twisted bands at each target monitoring point to twist to the corresponding target twist rate, thereby ensuring rapid cooling of the high-temperature area, reducing the temperature difference between each monitoring point of the battery, improving the cooling effect of the battery, and also improving the service life of the battery.

[0096] In an exemplary embodiment, Figure 4 is a flow schematic of the cooling method of the battery provided by the present application Figure 2 As Figure 4 shown, the method further includes S401 to S402, where:

[0097] S401. Determine the temperature information of multiple original monitoring points on the battery, where the number of the multiple original monitoring points is greater than the preset number.

[0098] S402. Determine a preset number of target monitoring points from multiple original monitoring points according to the temperature information of the multiple original monitoring points, and control the preset number of twisted bands to move to the preset number of target monitoring points respectively.

[0099] Among them, the original monitoring point refers to the temperature monitoring point set on the battery.

[0100] Exemplarily, in order to avoid excessive increase in flow resistance caused by too many twisted bands, the number of twisted bands can be set according to the actual situation. And to effectively cool down the battery, as many original monitoring points as possible need to be set on the battery. That is to say, when the number of multiple original monitoring points is greater than the preset number, the temperature information of the original monitoring points can be used to determine the preset number of monitoring points with the greatest cooling demand, and the twisted bands can be moved to these target monitoring points with the greatest cooling demand respectively. In this way, it can not only ensure effective cooling of the battery, but also avoid the increase in flow resistance caused by excessive setting of twisted bands, resulting in poor cooling effect on the battery, and thus can better cool down the battery.

[0101] It can be understood that the preset number of monitoring points with the greatest cooling demand mentioned above are the target monitoring points.

[0102] In this embodiment, through the above possible examples, the preset number of target monitoring points can be determined from multiple original monitoring points according to the temperature information of the multiple original monitoring points, which is beneficial to realizing the movement control of the preset number of twisted bands, so as to better cool down the battery and ensure the cooling effect on the battery.

[0103] Optionally, in the step of S401, determining the temperature information of multiple original monitoring points on the battery includes:

[0104] In the current adjustment period, obtain the temperature information of multiple original monitoring points determined on the battery; where the current adjustment period is the period for adjusting the position and / or twist rate of the twisted band;

[0105] After the step of controlling the twisted bands of each monitoring point to be twisted at the twist rates respectively corresponding to each target monitoring point, in the case that the next adjustment period of the current adjustment period is reached after a preset time, return to the step of determining the temperature information of multiple original monitoring points on the battery.

[0106] Exemplarily, in step S401, it is to determine the temperature information of multiple original monitoring points in the current adjustment cycle. In the current adjustment cycle, the position and / or twist rate of the twisted tape can be adjusted. After the step of controlling the twisted tape at each monitoring point to be twisted at the twist rate corresponding to each target monitoring point respectively, the next adjustment cycle of the current adjustment cycle can be reached after a preset time, and the next adjustment cycle can be used as the new current adjustment cycle, and return to the step of determining the temperature information of multiple original monitoring points on the battery.

[0107] In this way, real-time periodic cooling control can be performed on multiple original monitoring points of the battery, which is beneficial to realizing dynamic cooling adjustment of multiple original monitoring points of the battery, can better cool the battery, and enhances the cooling effect on the battery.

[0108] In an exemplary embodiment, Figure 5 is the flow schematic of the battery cooling method provided by this application Figure 3 , as Figure 5 shown, based on the Figure 4 embodiment, step S402 is described in detail. Among them, the temperature information includes temperature value and temperature rise rate.

[0109] In step S402, according to the temperature information of multiple original monitoring points, a preset number of target monitoring points are determined from multiple original monitoring points, which may specifically include S501 to S503, where:

[0110] S501. Based on the temperature values of multiple original monitoring points and the temperature rise rates of multiple original monitoring points, determine the temperature monitoring data of multiple original monitoring points.

[0111] S502. Obtain the numerical descending order of the temperature monitoring data of multiple original monitoring points.

[0112] S503. Take the original monitoring points located before the preset number in the numerical descending order as the target monitoring points.

[0113] Among them, the temperature monitoring data can be used to characterize the "temperature performance" of the original monitoring point, and the "temperature performance" value can be the detection phenomenon of temperature. The temperature value can be the value monitored by the temperature monitoring device. The temperature rise rate refers to the rate of temperature increase. The temperature monitoring data can refer to the temperature index data of the monitoring point. The numerical descending order can refer to the result obtained by sorting the values of the temperature monitoring data in descending order. For example, if the temperature monitoring data A > temperature monitoring data B > temperature monitoring data C, then the numerical descending order can be A, B, C.

[0114] Exemplarily, the controller can obtain the temperature values of multiple original monitoring points through a temperature monitoring device, and can determine the temperature rise rate of the original monitoring points based on the temperature values. Further, for each original monitoring point, the controller can calculate the temperature monitoring data of the original monitoring point according to the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point.

[0115] The controller can determine the numerical descending order of the temperature monitoring data of multiple original monitoring points, and can use the original monitoring points corresponding to the temperature monitoring data ranked in the top preset number in the numerical descending order as target monitoring points.

[0116] In this way, through the above method for determining target monitoring points, the original monitoring points that most need cooling can be determined based on the temperature monitoring data, so that the preset number of target monitoring points can be effectively determined. Furthermore, the monitoring points with relatively large temperature monitoring data can be cooled down quickly, thus ensuring the cooling effect on the battery.

[0117] Optionally, assume that there are m temperature monitoring points on the battery, and the temperatures at time t are T 1 、T 2 、...T m . The controller can read the temperatures of each temperature monitoring point at times 1, 2, 3,..., i - 1, i, i + 1, etc. Taking the m points as an example, the temperature rise rate of the temperature points of each point at time t i can be obtained through the following expression (1):

[0118] (1)

[0119] Optionally, in the step of S501, to determine the temperature monitoring data of multiple original monitoring points based on the temperature values of multiple original monitoring points and the temperature rise rates of multiple original monitoring points, it may specifically include:

[0120] Obtain the temperature ratio parameter preset for the temperature monitoring data.

[0121] For any original monitoring point, based on the temperature ratio parameter, perform a fusion process on the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point to obtain the temperature monitoring data of the original monitoring point.

[0122] Among them, the temperature ratio parameter may refer to a coefficient used to control the performance of temperature data.

[0123] Exemplarily, the number of temperature ratio parameters may be multiple. For example, two temperature ratio parameters can be used to perform weighted fusion on the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point respectively to obtain the temperature monitoring data of the original monitoring point.

[0124] In this embodiment, by using the above temperature ratio parameter, it is beneficial to fuse the temperature value and the temperature rise rate, so that the temperature monitoring data can be determined better, the temperature monitoring data is more accurate, and thus it is more conducive to the movement control of the twisted tape, ensuring the cooling effect of the battery.

[0125] Optionally, based on the temperature ratio parameter, the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point are fused to obtain the temperature monitoring data of the original monitoring point, including:

[0126] Add the product of the temperature rise rate and the temperature ratio parameter to the temperature value to obtain the temperature monitoring data of the original monitoring point;

[0127] Among them, the product of the temperature rise rate and the temperature ratio parameter is less than the temperature value.

[0128] Exemplarily, multiplying the temperature rise rate by the temperature ratio parameter and adding the product of the temperature rise rate and the temperature ratio parameter to the temperature value can effectively obtain the temperature monitoring data of the original monitoring point and effectively reflect the importance degree between the temperature rise rate and the temperature value. And, making the product of the temperature rise rate and the temperature ratio parameter less than the temperature value, in this way, the movement of the twisted tape can be mainly controlled based on the currently monitored temperature value, ensuring that in the current environment, the monitoring points with high temperature values are quickly cooled down, so as to ensure the current cooling effect on the battery.

[0129] In this embodiment, through the above temperature monitoring data determination method, the temperature values and temperature rise rates of each temperature monitoring point can be comprehensively considered to avoid ignoring some temperature monitoring points that, although not very high in temperature, have a large temperature rise rate and may reach a higher temperature. At the same time, the temperature value of the temperature monitoring point itself is ensured to be the main determining factor for the temperature monitoring data.

[0130] Optionally, introduce a proportionality coefficient k (temperature ratio parameter) to make a real-time judgment on the position where the twisted tape should move. Taking the temperature monitoring point m as an example, the temperature monitoring data P of this point at time i m can be obtained through the following expression (2):

[0131] (2)

[0132] Among them, Equation (2) is intended to comprehensively consider the temperature values and temperature rise rates of each temperature monitoring point to avoid ignoring some temperature monitoring points with relatively low temperatures but large temperature rise rates that may reach relatively high temperatures. The value of k should be determined according to the actual temperature performance of the battery under fast charging conditions. It is necessary to avoid too small a value of k, which may cause the temperature monitoring data to not fully consider the influence of the temperature rise rate, and also avoid too large a value of k, which may weaken the contribution of the temperature of the temperature monitoring point itself to the temperature monitoring data value. Generally speaking, Equation (2) should mainly consider the temperature value and also take into account the value of the temperature rise rate at this point. Therefore, the value of k should be such that the value of k·dT m / dt i is smaller than T m smaller.

[0133] In an exemplary embodiment, the temperature information includes: temperature value and temperature rise rate; the target twist rate has a negative correlation with the temperature value and a negative correlation with the temperature rise rate.

[0134] For example, the higher the temperature value of the target monitoring point, the smaller the target twist rate that can be set for the target monitoring point. The greater the temperature rise rate of the target monitoring point, the smaller the target twist rate that can be set for the target monitoring point.

[0135] Generally speaking, the smaller the twist rate, the more intense the twisting degree of the twisted belt and the more intense the disturbance to the refrigerant. Therefore, when the temperature value is higher and the temperature rise rate is greater, a smaller twist rate can be set to achieve rapid cooling of the target monitoring point.

[0136] In this embodiment, through the above-mentioned correlation, it is beneficial to enable the target monitoring point to achieve rapid cooling, thereby ensuring effective cooling of the battery.

[0137] In an exemplary embodiment, based on the temperature information of the target monitoring point on the battery, determining the target twist rate corresponding to the target monitoring point includes:

[0138] Based on the temperature value of the target monitoring point and a preset temperature threshold, and the temperature rise rate of the target monitoring point and a preset temperature rise rate threshold, determine the target twist rate corresponding to the target monitoring point respectively.

[0139] Exemplarily, according to the actual application situation of the battery, it can be determined that the maximum temperature value of the battery under fast charging conditions cannot exceed the threshold x, where x is a threshold whose influence on the service life of the battery pack under fast charging conditions is within a controllable range after evaluation. Assume that the upper limit threshold of the temperature rise rate is y, where y is a threshold representing that the temperature rise rate is too fast and may cause the temperature at this point to reach a relatively high level in a short time.

[0140] In this way, the controller can determine the target twist rate corresponding to the target monitoring point based on the comparison result between the temperature value of the target monitoring point and the preset temperature threshold, and the comparison result between the temperature rise rate of the target monitoring point and the preset temperature rise rate threshold, which is conducive to the controller accurately determining the target twist rate, and further conducive to the twist control of the twisted belt, ensuring the effective cooling effect on the battery.

[0141] Optionally, determining the target twist rate corresponding to the target monitoring point based on the temperature value of the target monitoring point and the preset temperature threshold, and the temperature rise rate of the target monitoring point and the preset temperature rise rate threshold includes:

[0142] If the temperature value is greater than the temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, the target twist rate is determined as the first twist rate;

[0143] If the temperature value is greater than the temperature threshold and the temperature rise rate is less than the temperature rise rate threshold, the target twist rate is determined as the second twist rate;

[0144] If the temperature value is less than the temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, the target twist rate is determined as the third twist rate;

[0145] If the temperature value is less than the temperature threshold and the temperature rise rate is less than the temperature rise rate threshold, the target twist rate is determined as the fourth twist rate;

[0146] Among them, the twist rates are in descending order: the fourth twist rate, the third twist rate, the second twist rate, and the first twist rate.

[0147] Exemplarily, when T m >x, dT m / dt i >y, it means that the temperature at this point of the battery pack is high and the temperature rise is fast, there is a risk of temperature runaway, and the adverse impact on the battery pack life is relatively large. At this time, the control system adjusts the twist rate of the twisted belt to the enhanced control twist rate b 1 .

[0148] When T m >x, dT m / dt i <y, it means that the temperature at this point of the battery pack is high but the temperature rise is relatively stable. Although the temperature of this temperature monitoring point is relatively high, the temperature rise situation is controllable. At this time, the control system adjusts the twist rate of the twisted belt to the conventional control twist rate b 2 .

[0149] When T m <x, dT m / dt iWhen it is greater than y, it means that although the temperature at this point of the battery pack does not trigger the threshold, the temperature rise is relatively severe, and there is a risk of temperature exceeding the standard. At this time, the control system adjusts the twist rate of the twisted belt to the forward control twist rate b. 3 。

[0150] When T m <x, dT m / dt i <y, it means that the temperature at this point of the battery pack does not trigger the threshold, and the temperature rise is relatively stable. At this time, the control system adjusts the twist rate of the twisted belt to the preventive control twist rate b4.

[0151] It should be noted that the enhanced control twist rate b 1 < the conventional control twist rate b 2 < the forward control twist rate b 3 < the preventive control twist rate b 4 。 In this way, the smaller the twist rate, the more severe the twisting degree of the twisted belt, and the more severe the disturbance to the refrigerant, ensuring that when the temperature value is high and the temperature rise rate is large, rapid cooling can be achieved.

[0152] In this embodiment, through the above specific implementation method, the target monitoring point of the battery pack can be accurately cooled. When the temperature value is high and the temperature rise rate is large, rapid cooling can be achieved, thereby enhancing the cooling effect on the battery and reducing the overall temperature difference of the battery.

[0153] Optionally, after one timing cycle T has passed, the controller can calculate the temperature of each original monitoring point in the battery again, then move the preset number of twisted belts to appropriate positions, repeat the above judgment logic, and stretch and contract each twisted belt to adjust to the appropriate twist rate.

[0154] In an exemplary embodiment, Figure 6 is the flow schematic of the battery cooling method provided by this application Figure 4 , as Figure 6 shown, taking this method applied to the controller of the battery cooling system in Figure 2 as an example for description, where:

[0155] S601. According to the actual usage situation, preset the temperature threshold x, temperature rise rate threshold y, and the number of twisted belts a of the battery pack under fast charging conditions.

[0156] S602. Start the timer to time the adjustment period T of the twisted belt.

[0157] S603. Calculate the "temperature performance" value P of each temperature monitoring point of the battery pack.

[0158] S604. Move the a twisted belts to the area where the values of the "temperature performance" P are in the top a positions.

[0159] S605. Make a real - time determination of the temperature value and the temperature rise rate at the temperature monitoring point where the twisted tape is located, and compare them with the temperature threshold x and the temperature rise rate threshold y.

[0160] S606. If T m >x, execute S607.

[0161] S607. Determine whether dT m / dt i >y. If so, execute S608; if not, execute S609.

[0162] S608. Adjust the twist rate of the twisted tape at this place to the enhanced control twist rate b 1 .

[0163] S609. Adjust the twist rate of the twisted tape at this place to the enhanced control twist rate b 2 .

[0164] S610. If T m <x, execute S611.

[0165] S611. dT m / dt i >y. If so, execute S612; if not, execute S613.

[0166] S612. Adjust the twist rate of the twisted tape at this place to the forward - looking control twist rate b 3 .

[0167] S613. Adjust the twist rate of the twisted tape at this place to the forward - looking control twist rate b 4 .

[0168] S614. Keep timing.

[0169] S615. Determine whether the timer reaches the adjustment period T of the twisted tape. If so, return to S603; if not, return to S614.

[0170] Exemplarily, in the specific embodiments provided by the present application Figure 6 each step in the shown specific embodiments can be implemented by the above - mentioned respective embodiments or combinations of multiple embodiments, and will not be elaborated herein.

[0171] In this embodiment, the battery pack enhanced heat transfer solution with a freely movable and telescopic twisted tape inserted in the flow channel adopted by the present application can effectively improve the adverse phenomena of high temperature and large temperature difference of the battery pack under fast charging conditions by strengthening the cooling of areas with too high battery temperature or too fast temperature rise rate. Thus, it can reduce the influence of high heat generation during fast charging on the battery pack life attenuation, which is beneficial to ensuring the battery quality assurance life and improving the user experience.

[0172] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0173] Figure 7 FIG. is a schematic structural diagram of a battery cooling device provided by the present application. As Figure 7 shown, the battery cooling device 70 provided in this embodiment is applied to a battery cooling system for cooling a battery. The battery cooling system is provided with a preset number of twisted tapes, and the twisted tapes are used to generate disturbances to the coolant. The device includes:

[0174] A determination module 701, configured to determine a target twist rate corresponding to a target monitoring point based on the temperature information of the target monitoring point on the battery; wherein, the target monitoring point is the monitoring point where the preset number of twisted tapes are located;

[0175] A control module 702, configured to control the twisted tapes of each target monitoring point to twist at the target twist rate corresponding to each target monitoring point respectively.

[0176] In a possible implementation manner, the determination module 701 is further configured to determine the temperature information of a plurality of original monitoring points on the battery, where the number of the plurality of original monitoring points is greater than the preset number; according to the temperature information of the plurality of original monitoring points, determine a preset number of target monitoring points from the plurality of original monitoring points, and control the preset number of twisted tapes to move to the preset number of target monitoring points respectively.

[0177] In a possible implementation manner, the temperature information includes: a temperature value and a temperature rise rate; the determination module 701 is configured to determine the temperature monitoring data of the plurality of original monitoring points based on the temperature values of the plurality of original monitoring points and the temperature rise rates of the plurality of original monitoring points; obtain the numerical descending order of the temperature monitoring data of the plurality of original monitoring points; and use the original monitoring points located before the preset number in the numerical descending order as the target monitoring points.

[0178] In a possible implementation manner, the determination module 701 is configured to obtain a preset temperature ratio parameter for temperature monitoring data; for any original monitoring point, based on the temperature ratio parameter, perform fusion processing on the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point to obtain the temperature monitoring data of the original monitoring point.

[0179] In a possible implementation manner, the determination module 701 is configured to add the product of the temperature rise rate and the temperature ratio parameter to the temperature value to obtain the temperature monitoring data of the original monitoring point; wherein, the product of the temperature rise rate and the temperature ratio parameter is less than the temperature value.

[0180] In a possible implementation manner, the determination module 701 is configured to, in the current adjustment period, obtain the temperature information of multiple original monitoring points on the battery; wherein, the current adjustment period is the period for adjusting the position and / or the twist rate of the twisted band; after the step of controlling the twisted bands of each monitoring point to be twisted at the twist rate corresponding to each target monitoring point respectively, in the case of reaching the next adjustment period of the current adjustment period after a preset time, return to the step of obtaining the temperature information of multiple original monitoring points on the battery.

[0181] In a possible implementation manner, the temperature information includes: the temperature value and the temperature rise rate; the target twist rate has a negative correlation with the temperature value and a negative correlation with the temperature rise rate.

[0182] In a possible implementation manner, the determination module 701 is configured to determine the target twist rate corresponding to each target monitoring point based on the temperature value of the target monitoring point and the preset temperature threshold, and the temperature rise rate of the target monitoring point and the preset temperature rise rate threshold.

[0183] In a possible implementation manner, the determination module 701 is configured to, if the temperature value is greater than the temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, determine the target twist rate as the first twist rate; if the temperature value is greater than the temperature threshold and the temperature rise rate is less than the temperature rise rate threshold, determine the target twist rate as the second twist rate; if the temperature value is less than the temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, determine the target twist rate as the third twist rate; if the temperature value is less than the temperature threshold and the temperature rise rate is less than the temperature rise rate threshold, determine the target twist rate as the fourth twist rate; wherein, the twist rates are arranged in descending order as: the fourth twist rate, the third twist rate, the second twist rate, and the first twist rate.

[0184] The battery cooling device provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effects are similar, which will not be elaborated here in this embodiment.

[0185] Figure 8 It is a schematic structural diagram of the controller of the battery cooling system provided in this application. As Figure 8As shown in the figure, the electronic device 80 provided in this embodiment includes: at least one processor 801 and a memory 802. Optionally, the device 80 further includes a communication component 803. Among them, the processor 801, the memory 802, and the communication component 803 are connected through a bus 804.

[0186] In a specific implementation process, at least one processor 801 executes the computer-executable instructions stored in the memory 802, so that at least one processor 801 executes the above method.

[0187] For the specific implementation process of the processor 801, reference can be made to the above method embodiment, and its implementation principle and technical effects are similar, so they will not be elaborated here in this embodiment.

[0188] In the above embodiment, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, abbreviated: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, abbreviated: DSP), application specific integrated circuits (English: Application Specific Integrated Circuit, abbreviated: ASIC), etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0189] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk memory.

[0190] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0191] This application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0192] The present application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0193] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk or an optical disk. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0194] An exemplary readable storage medium is coupled to the processor so that the processor can read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0195] The division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed among each other can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0196] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0197] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0198] If a function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes 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 of the various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, etc., all kinds of media that can store program codes.

[0199] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When this program is executed, it executes the steps including the above method embodiments; and the aforementioned storage medium includes: ROMs, RAMs, magnetic disks, or optical discs, etc., all kinds of media that can store program codes.

[0200] Finally, it should be noted that: After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other implementation manners of the present invention. The present invention is intended to cover any variations, uses, or adaptations of the present invention, and these variations, uses, or adaptations follow the general principles of the present invention and include common general knowledge or conventional technical means in the technical field not disclosed in the present invention. It is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A battery cooling method, characterized in that: A battery cooling system for cooling a battery, the battery cooling system being provided with a preset number of twisted bands, the twisted bands being used to generate disturbances to a coolant, the method comprising: Based on the temperature information of the target monitoring point on the battery, determine the target torsion rate corresponding to the target monitoring point; wherein the target monitoring point is a preset number of monitoring points where the torsion bands are located; The twisting band of each target monitoring point is controlled to be twisted at a target torsion rate corresponding to each target monitoring point.

2. The method according to claim 1, characterized in that The method further comprises: Determining temperature information of a plurality of original monitoring points on the battery, wherein the number of the plurality of original monitoring points is greater than the preset number; According to the temperature information of the plurality of original monitoring points, a preset number of target monitoring points are determined from the plurality of original monitoring points, and the preset number of twisted belts are controlled to move to the preset number of target monitoring points respectively.

3. The method according to claim 2, characterized in that The temperature information includes: temperature value and temperature rise rate; The step of determining a preset number of target monitoring points from the plurality of original monitoring points according to the temperature information of the plurality of original monitoring points comprises: Determining temperature monitoring data of the plurality of original monitoring points based on the temperature values ​​of the plurality of original monitoring points and the temperature rise rates of the plurality of original monitoring points; Obtain the temperature monitoring data of the plurality of original monitoring points and sort them in descending order; A preset number of original monitoring points before the numerical values ​​are sorted in descending order are used as target monitoring points.

4. The method according to claim 3, characterized in that The determining the temperature monitoring data of the plurality of original monitoring points based on the temperature values ​​of the plurality of original monitoring points and the temperature rise rates of the plurality of original monitoring points comprises: Obtaining preset temperature ratio parameters for temperature monitoring data; For any of the original monitoring points, based on the temperature ratio parameter, the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point are fused to obtain the temperature monitoring data of the original monitoring point.

5. The method according to claim 4, characterized in that The step of fusing the temperature value of the original monitoring point and the temperature rise rate of the original monitoring point based on the temperature ratio parameter to obtain the temperature monitoring data of the original monitoring point includes: Adding the product of the temperature rise rate and the temperature ratio parameter to the temperature value to obtain the temperature monitoring data of the original monitoring point; Wherein, the product of the temperature rise rate and the temperature proportion parameter is less than the temperature value.

6. The method according to claim 2, characterized in that The determining temperature information of a plurality of original monitoring points on the battery includes: In a current adjustment cycle, determining temperature information of a plurality of original monitoring points on the battery; wherein the current adjustment cycle is a cycle for adjusting the position and / or torsion rate of the twisted band; After the step of controlling the twisting band of each of the monitoring points to twist at the torsion rate corresponding to each of the target monitoring points, when the next adjustment cycle of the current adjustment cycle is reached after a preset time, the temperature information of the multiple original monitoring points on the battery is returned.

7. The method according to any one of claims 1 to 6, characterized in that: The temperature information includes: temperature value and temperature rise rate; The target torque is negatively correlated with the temperature value and negatively correlated with the temperature rise rate.

8. The method according to any one of claims 1 to 6, characterized in that: The temperature information includes: a temperature value and a temperature rise rate; the determining of a target torque corresponding to the target monitoring point based on the temperature information of the target monitoring point on the battery includes: Based on the temperature value of the target monitoring point and the preset temperature threshold, the temperature rise rate of the target monitoring point and the preset temperature rise rate threshold, the target torques corresponding to the target monitoring points are determined.

9. The method according to claim 8, characterized in that The determining of the target torques corresponding to the target monitoring points based on the temperature value of the target monitoring point and the preset temperature threshold, the temperature rise rate of the target monitoring point and the preset temperature rise rate threshold, comprises: If the temperature value is greater than the temperature threshold, and the temperature rise rate is greater than the temperature rise rate threshold, determining the target torque as the first torque; If the temperature value is greater than the temperature threshold and the temperature rise rate is less than the temperature rise rate threshold, the target torque is determined as a second torque; If the temperature value is less than the temperature threshold and the temperature rise rate is greater than the temperature rise rate threshold, the target torque is determined as a third torque; If the temperature value is less than the temperature threshold, and the temperature rise rate is less than the temperature rise rate threshold, determining the target torque as a fourth torque; Among them, the order of the torsion from large to small is: the fourth torsion, the third torsion, the second torsion, and the first torsion.

10. A controller for a battery cooling system, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 9.

11. A battery cooling system, characterized in that: include: A battery, with a cooling liquid disposed on the periphery for cooling the battery; A preset number of twisted bands are used to generate disturbances on the coolant.

12. The system according to claim 11, characterized in that The system further comprises: A driving device for moving and / or twisting the twisted belt; A controller is connected to the driving device, and is used to determine a target torque rate corresponding to a target monitoring point on a battery based on temperature information of the target monitoring point; the target torque rate is used to instruct a twisting band of the target monitoring point to twist.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 9 when executed by a processor.

14. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method according to any one of claims 1 to 9 is implemented.

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