Battery cooling control method and device, storage medium and processor

Abstract

The invention discloses a battery cooling control method and device, a storage medium and a processor. According to the scheme, the battery temperature and the battery SOC when the vehicle is in a running state are monitored; the battery SOC is used for representing the residual state of the vehicle battery electric quantity; determining a target cooling start temperature threshold matched with the battery SOC from a plurality of cooling start temperature thresholds based on the battery SOC; the target cooling starting temperature threshold value is in negative correlation with the SOC of the battery; if the battery temperature is larger than or equal to the target cooling starting temperature threshold value, a battery cooling component is controlled to be started to cool the battery. According to the technical scheme, the optimal temperature threshold value matched with the remaining condition of the vehicle battery is obtained based on the battery SOC, the energy consumption of the vehicle battery is reduced, and the cruising ability of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery thermal management, and in particular to a battery cooling control method, device, storage medium and processor. Background Art

[0002] With the development of new energy vehicle technology, the vehicle's endurance has become one of the key indicators that users consider when purchasing new energy vehicles. Generally speaking, the lower the vehicle's energy consumption, the higher its endurance. Therefore, how to reduce the energy consumption of new energy vehicles has become an urgent problem to be solved in the new energy industry.

[0003] When the batteries of new energy vehicles (such as lithium-ion batteries) operate at high currents or encounter over-discharge conditions, a large amount of heat will be generated, causing the battery temperature to be too high. If the heat is not removed in time, it will affect the cycle life and efficiency of the battery, and may even cause thermal runaway of the battery. In order to maintain the optimal working state of the vehicle battery, it is usually necessary to design an efficient battery thermal management system to achieve effective heat dissipation of the battery.

[0004] However, in order to ensure the safety of the battery, the existing battery thermal management system often adopts a more conservative thermal management strategy, which usually sets a lower temperature threshold (such as 35°C) and adopts more frequent and active cooling measures. Even if the battery temperature has not reached the critical point, the battery cooling components (such as the liquid cooling system) will be activated to cool the battery, resulting in higher battery energy consumption, thereby shortening the vehicle's range. Summary of the invention

[0005] Based on the above problems, the present application provides a battery cooling control method, device, storage medium and processor, the purpose of which is to reduce the energy consumption of the vehicle battery and improve the vehicle's endurance.

[0006] The embodiments of the present application disclose the following technical solutions:

[0007] In a first aspect of the present application, a battery cooling control method is provided, the method comprising:

[0008] Monitor the battery temperature and battery SOC when the vehicle is in driving state; battery SOC is used to characterize the remaining state of the vehicle battery power;

[0009] Determine a target cooling start temperature threshold value matching the battery SOC from a plurality of cooling start temperature threshold values ​​based on the battery SOC; the target cooling start temperature threshold value is negatively correlated with the battery SOC;

[0010] If the battery temperature is greater than or equal to the target cooling start temperature threshold, the battery cooling component is controlled to start cooling the battery.

[0011] In an optional implementation, the multiple cooling start temperature thresholds include at least a first cooling start temperature threshold and a second cooling start temperature threshold, and the first cooling start temperature threshold is less than the second cooling start temperature threshold; and determining a target cooling start temperature threshold matching the battery SOC from the multiple cooling start temperature thresholds based on the battery SOC includes:

[0012] Determine whether the battery SOC is greater than a first preset threshold;

[0013] If the battery SOC is greater than the first preset threshold, the first cooling start temperature threshold is used as the target cooling start temperature threshold;

[0014] If the battery SOC is less than or equal to the first preset threshold, and the battery SOC is greater than the second preset threshold, the second cooling start temperature threshold is used as the target cooling start temperature threshold; the first preset threshold is greater than the second preset threshold.

[0015] In an optional implementation, the battery cooling control method further includes:

[0016] If the battery SOC is less than or equal to a second preset threshold, it is prohibited to start the battery cooling component to cool the battery.

[0017] In an optional implementation, after controlling the battery cooling component to start cooling the battery, the battery cooling control method further includes:

[0018] Monitor the target temperature and target SOC when the battery is in a cooling state;

[0019] Determining a target cooling shutdown temperature threshold value matching the target SOC from a plurality of cooling shutdown temperature threshold values ​​based on the target SOC; the target cooling shutdown temperature threshold value is negatively correlated with the target SOC;

[0020] If the target temperature is less than or equal to the target cooling off temperature threshold, control stops cooling of the battery by the battery cooling component.

[0021] In a second aspect of the present application, a battery cooling control device is provided, the device comprising:

[0022] The first monitoring module is used to monitor the battery temperature and battery SOC when the vehicle is in a driving state; the battery SOC is used to characterize the remaining state of the vehicle battery power;

[0023] A first determination module is used to determine a target cooling start temperature threshold value matching the battery SOC from a plurality of cooling start temperature threshold values ​​based on the battery SOC; the target cooling start temperature threshold value is negatively correlated with the battery SOC;

[0024] The first control module is used for controlling and starting a battery cooling component to cool the battery if the battery temperature is greater than or equal to a target cooling start temperature threshold.

[0025] Optionally, the multiple cooling start temperature thresholds include at least a first cooling start temperature threshold and a second cooling start temperature threshold, and the first cooling start temperature threshold is less than the second cooling start temperature threshold; the determining module includes:

[0026] A determination unit, used to determine whether the battery SOC is greater than a first preset threshold;

[0027] a first determining unit, configured to use a first cooling start temperature threshold as a target cooling start temperature threshold if the battery SOC is greater than a first preset threshold;

[0028] The second determination unit is used to use the second cooling start temperature threshold as the target cooling start temperature threshold if the battery SOC is less than or equal to the first preset threshold and the battery SOC is greater than the second preset threshold; the first preset threshold is greater than the second preset threshold.

[0029] Optionally, the determination module further includes: a startup prohibition unit, configured to prohibit starting a battery cooling component to cool the battery if the battery SOC is less than or equal to a second preset threshold.

[0030] Optionally, the battery cooling control device further includes:

[0031] A second monitoring module, for monitoring a target temperature and a target SOC of the battery when the battery is in a cooling state after controlling the battery cooling component to start cooling the battery;

[0032] A second determination module is used to determine a target cooling shutdown temperature threshold value matching the target SOC from a plurality of cooling shutdown temperature threshold values ​​based on the target SOC; the target cooling shutdown temperature threshold value is negatively correlated with the target SOC;

[0033] The second control module is configured to control stopping cooling of the battery by the battery cooling component if the target temperature is less than or equal to a target cooling shutdown temperature threshold.

[0034] In a third aspect of the present application, a computer-readable storage medium is provided, in which a computer program is stored. When the computer program is executed by a processor, the above-mentioned battery cooling control method is implemented.

[0035] In a fourth aspect of the present application, a processor is provided for running a computer program, and the battery cooling control method mentioned above is executed when the computer program is running.

[0036] Compared with the prior art, this application has the following beneficial effects:

[0037] In the technical solution of the present application, the battery temperature and battery SOC are first monitored when the vehicle is in a driving state; secondly, based on the battery SOC, a target cooling start temperature threshold matching the battery SOC is determined from multiple cooling start temperature thresholds, and when the battery temperature is greater than or equal to the target cooling start temperature threshold, the battery cooling component is controlled to cool the battery. In the technical solution of the present application, the battery SOC can be used to characterize the remaining state of the vehicle battery power, and the target cooling start temperature threshold is negatively correlated with the battery SOC, that is, the higher the remaining power of the vehicle battery, the lower the target cooling start temperature threshold, and the lower the remaining power of the vehicle battery, the higher the target cooling start temperature threshold. Therefore, based on the battery SOC, the optimal temperature threshold matching the remaining state of the vehicle battery power (i.e., the target cooling start temperature threshold) can be determined; thereby, the start of the battery cooling component can be controlled according to the optimal temperature threshold matching the remaining state of the vehicle battery power, avoiding the problem of high battery energy consumption due to frequent cooling measures for the vehicle battery, thereby reducing the energy consumption of the vehicle battery and improving the vehicle's endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0039] Figure 1 A flowchart of a battery cooling control method provided in an embodiment of the present application;

[0040] Figure 2 A flowchart of a process for determining a target cooling start temperature threshold provided in an embodiment of the present application;

[0041] Figure 3 A flowchart of another battery cooling control method provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of a battery cooling control simulation result provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of the structure of a battery cooling control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] As described above, in order to ensure battery safety, existing battery thermal management systems often adopt a more conservative thermal management strategy, which usually sets a lower temperature threshold (e.g. 35°C) and uses more frequent and active cooling measures. Even if the battery temperature has not reached the critical point, the battery cooling components (e.g. liquid cooling system) will be activated, resulting in additional energy consumption in battery cooling, thereby shortening the vehicle's range.

[0045] After research, the inventor proposed a battery cooling control method, which first monitors the battery temperature and battery SOC when the vehicle is in a driving state; secondly, based on the battery SOC, a target cooling start temperature threshold matching the battery SOC is determined from multiple cooling start temperature thresholds, and when the battery temperature is greater than or equal to the target cooling start temperature threshold, the battery cooling component is controlled to start to cool the battery. Since the battery SOC can be used to characterize the remaining state of the vehicle battery power, the target cooling start temperature threshold is negatively correlated with the battery SOC, that is, the higher the remaining power of the vehicle battery, the lower the target cooling start temperature threshold, and the lower the remaining power of the vehicle battery, the higher the target cooling start temperature threshold. Therefore, based on the battery SOC, the optimal temperature threshold matching the remaining state of the vehicle battery power (i.e., the target cooling start temperature threshold) can be determined; thus, the start of the battery cooling component can be controlled according to the optimal temperature threshold matching the remaining state of the vehicle battery power, avoiding the problem of high battery energy consumption due to frequent cooling measures for the vehicle battery, thereby reducing the energy consumption of the vehicle battery and improving the vehicle's endurance.

[0046] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] Keyword definitions:

[0048] SOC: The full name is State of Charge. SOC refers to the percentage of the battery's current remaining power to the total capacity. It is an important parameter for measuring the remaining energy of the battery and is widely used in electric vehicles, portable electronic devices and other battery-powered systems.

[0049] Method Embodiment

[0050] An embodiment of the present application provides an embodiment of a battery cooling control method. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0051] See also Figure 1 , which is a flow chart of a battery cooling control method provided by an embodiment of the present application, such as Figure 1 As shown, the method comprises the following steps:

[0052] Step S101, monitoring the battery temperature and battery SOC when the vehicle is in a driving state.

[0053] In an optional embodiment, a battery cooling control system may be used as the execution subject of the battery cooling control method of the embodiment of the present application. For the convenience of description, the battery cooling control system is referred to as a system below.

[0054] In step S101 , the battery SOC may be used to characterize the remaining power of the vehicle battery. For example, when the battery SOC is 80%, it may be characterized that the remaining power of the vehicle battery is 80%.

[0055] Step S102 : determining a target cooling start temperature threshold value matching the battery SOC from a plurality of cooling start temperature threshold values ​​based on the battery SOC.

[0056] In step S102, the target cooling start temperature threshold is negatively correlated with the battery SOC. In other words, the higher the battery SOC, the lower the target cooling start temperature threshold, and the lower the battery SOC, the higher the target cooling start temperature threshold. For example, when the battery SOC is 90%, the target cooling start temperature threshold may be 35%; when the battery SOC is 40%, the target cooling start temperature threshold may be 38°C.

[0057] It should be noted that by making the target cooling start temperature threshold negatively correlated with the battery SOC, it is possible to use a lower cooling start temperature threshold as the target cooling start temperature threshold when the battery power is relatively sufficient to ensure the best driving experience of the vehicle; when the battery power is low, a higher cooling start temperature threshold is used as the target cooling start temperature threshold to avoid consuming too much power on battery cooling, so that as much power as possible can be used for vehicle endurance, thereby improving the vehicle's endurance.

[0058] In this embodiment, the cooling start temperature threshold is a preset temperature value used to determine when to start the battery cooling component. The multiple cooling start temperature thresholds include at least a first cooling start temperature threshold and a second cooling start temperature threshold, and the first cooling start temperature threshold is less than the second cooling start temperature threshold. For example, the first cooling start temperature threshold is 35°C, and the second cooling start temperature threshold is 38°C.

[0059] In an achievable manner, the multiple cooling start temperature thresholds may include a third cooling start temperature threshold, a fourth cooling start temperature threshold, etc. in addition to the first cooling start temperature threshold and the second cooling start temperature threshold, which may be selected according to actual conditions, and are not limited here. Among them, the third cooling start temperature threshold is greater than the second cooling start temperature threshold, the fourth cooling start temperature threshold is greater than the third cooling start temperature threshold, ..., and so on. For example, the first cooling start temperature threshold is 35°C, the second cooling start temperature threshold is 36°C, the third cooling start temperature threshold is 37°C, and the fourth cooling start temperature threshold is 38°C.

[0060] In this embodiment, the system can determine a target cooling start temperature threshold that matches the battery SOC from multiple cooling start temperature thresholds based on the battery SOC, the first preset threshold and the second preset threshold corresponding to the battery SOC, wherein the first preset threshold and the second preset threshold are pre-set SOC thresholds, and the first preset threshold is greater than the second preset threshold.

[0061] Specifically, see Figure 2 , Figure 2 A flowchart of a process for determining a target cooling start temperature threshold provided in an embodiment of the present application, the process comprising the following steps:

[0062] Step S201, determining whether the battery SOC is greater than a first preset threshold.

[0063] In this embodiment, the system can determine whether the remaining power of the vehicle battery is sufficient by judging whether the battery SOC is greater than a first preset threshold.

[0064] Step S202: If the battery SOC is greater than a first preset threshold, the first cooling start temperature threshold is used as a target cooling start temperature threshold.

[0065] In this embodiment, when the battery SOC is greater than the first preset threshold, the system can determine that the remaining power of the vehicle battery is relatively sufficient. In order to ensure the best driving experience of the vehicle, the lower first cooling start temperature threshold can be used as the target cooling start temperature threshold.

[0066] Step S203: if the battery SOC is less than or equal to the first preset threshold and the battery SOC is greater than the second preset threshold, the second cooling start temperature threshold is used as the target cooling start temperature threshold.

[0067] In this embodiment, when the battery SOC is less than or equal to the first preset threshold and the battery SOC is greater than the second preset threshold, the system can determine that the remaining power of the vehicle battery is low. In order to avoid consuming too much power on battery cooling and make as much power as possible for vehicle endurance, a higher second cooling start temperature threshold can be used as the target cooling start temperature threshold.

[0068] Optionally, if the battery SOC is less than or equal to a second preset threshold, starting the battery cooling component to cool the battery is prohibited.

[0069] In this embodiment, when the battery SOC is less than or equal to the second preset threshold, the system can determine that the remaining power of the vehicle battery is too low. In order to use as much power as possible for vehicle endurance, the battery cooling component may not be started to cool the battery under the premise of ensuring battery safety.

[0070] Optionally, in a scenario where the first preset threshold is 50%, the second preset threshold is 20%, the first cooling start temperature threshold is 35° C., and the second cooling start temperature threshold is 38° C., the above judgment process may be as shown in Table 1.

[0071] Table 1

[0072] Battery SOC Target cooling start temperature threshold Battery SOC>50% 35℃ 20%<Battery SOC≤50% 38℃ Battery SOC<20% Do not start the liquid cooling system

[0073] When the battery SOC is greater than 50%, the system can determine that the remaining power of the vehicle battery is relatively sufficient. In order to ensure the best driving experience of the vehicle, the lower 35°C can be used as the target cooling start temperature threshold; when the battery SOC is ≤50% and the battery SOC is greater than 20%, the higher 38°C can be used as the target cooling start temperature threshold to avoid consuming too much power on battery cooling; when the battery SOC is less than 20%, the system directly prohibits starting the liquid cooling system to make as much power as possible for vehicle endurance.

[0074] Step S103: if the battery temperature is greater than or equal to the target cooling start temperature threshold, control the start of the battery cooling component to cool the battery.

[0075] In this embodiment, the battery cooling component can be any one of the components for cooling the battery, such as a liquid cooling system and an air cooling system, which can be selected according to actual needs, so it is not specifically limited here. Among them, the cooling conditions of the liquid cooling system are: water flow requirement 15 / min, water temperature requirement 20±3℃.

[0076] In this embodiment, taking the target cooling start temperature threshold as 35°C as an example, if T max (i.e. battery temperature) ≥ 35°C, the battery cooling component is controlled to start cooling the battery; if T max If the temperature is less than 35℃, it is prohibited to start the battery cooling component to cool the battery.

[0077] In order to further improve the vehicle's endurance, in this embodiment, after controlling the battery cooling component to start cooling the battery, the system can determine whether to stop cooling the battery by real-time monitoring the target temperature and target SOC of the battery when it is in a cooling state. Figure 3 , Figure 3 A flowchart of another battery cooling control method provided in an embodiment of the present application, the method comprising the following steps:

[0078] Step S301 , monitoring the target temperature and target SOC when the battery is in a cooling state.

[0079] Step S302 : determining a target cooling shutoff temperature threshold that matches the target SOC from a plurality of cooling shutoff temperature thresholds based on the target SOC.

[0080] In step S302, the target cooling shut-off temperature threshold is negatively correlated with the target SOC. In other words, the higher the target SOC, the lower the target cooling shut-off temperature threshold, and the lower the target SOC, the higher the target cooling shut-off temperature threshold.

[0081] In this embodiment, the plurality of cooling shutdown temperature thresholds include a first cooling shutdown temperature threshold and a second cooling shutdown temperature threshold, wherein the first cooling shutdown temperature threshold is less than the second cooling shutdown temperature threshold. The system can determine the target cooling shutdown temperature threshold that matches the target SOC from the plurality of cooling shutdown temperature thresholds by the relationship between the target SOC and the first preset threshold and the second preset threshold. Specifically, the system can determine whether the battery power is sufficient by judging whether the target SOC is greater than the first preset threshold; when the target SOC is greater than the first preset threshold, the system can determine that the battery power is sufficient, and the lower first cooling shutdown temperature threshold is used as the target cooling shutdown temperature threshold; when the target SOC is less than or equal to the first preset threshold, and the target SOC is greater than the second preset threshold, the system can determine that the battery power is low, and the higher second cooling shutdown temperature threshold is used as the target cooling shutdown temperature threshold.

[0082] In an optional embodiment, the plurality of cooling shutdown temperature thresholds may include a third cooling shutdown temperature threshold and a fourth cooling shutdown temperature threshold in addition to the first cooling shutdown temperature threshold and the second cooling shutdown temperature threshold, which may be selected according to actual conditions and are not limited here. The third cooling shutdown temperature threshold is greater than the second cooling shutdown temperature threshold, the fourth cooling shutdown temperature threshold is greater than the third cooling shutdown temperature threshold, ..., and so on.

[0083] Step S303 : if the target temperature is less than or equal to the target cooling off temperature threshold, the control stops the battery cooling component from cooling the battery.

[0084] For example, in a scenario where the first preset threshold is 50%, the second preset threshold is 20%, the first cooling shutdown temperature threshold is 32° C., and the second cooling shutdown temperature threshold is 35° C., the above judgment conditions may be as shown in Table 2.

[0085] Table 2

[0086]

[0087] When the battery SOC is greater than 50%, the system can use a lower target cooling shutdown temperature threshold of 32°C to ensure the best driving experience of the vehicle; when the battery SOC is greater than 20% and the battery SOC is ≤50%, the higher target cooling shutdown temperature threshold of 35°C is used to allow as much power as possible to be used for vehicle endurance, thereby improving the vehicle's endurance.

[0088] In an optional embodiment, a battery thermal management system associated with the SOC strategy (i.e., a strategy for determining the target cooling start temperature threshold and the target cooling shut-off temperature threshold according to the battery SOC) and a vehicle not associated with the SOC strategy are tested under the same discharge condition to simulate actual road driving conditions. Figure 4 The simulation results are shown in Table 3.

[0089] Table 3

[0090]

[0091] Depend on Figure 4 The simulation results shown in the figure show that the battery of the vehicle without SOC strategy consumes 0.9kWh more power due to cooling, which can be converted into 7 minutes of driving time. When the SOC of the battery of the vehicle with SOC strategy and the vehicle without SOC strategy is greater than 50%, the power consumption of the two is basically the same. However, when SOC≤50%, Figure 4In the position shown in the "Energy Saving Zone", the vehicle with the associated SOC strategy can consume 2.1% less SOC than the vehicle without the associated SOC strategy. Taking the vehicle battery SOC as 50% (21kWh) as an example, the vehicle without the associated SOC strategy travels for 21540s (359min) and the battery cooling power consumption is 1.2; the vehicle with the associated SOC strategy travels for 21960s (366min) and the battery cooling power consumption is 0.3, which improves the energy efficiency by 4.3%, thereby effectively improving the vehicle's endurance.

[0092] Through the battery cooling control method provided in the embodiment of the present application, it is achieved that the optimal temperature threshold value matching the remaining power of the vehicle battery is obtained based on the battery SOC, so that the higher the remaining power of the vehicle battery, the lower the target cooling start temperature threshold value, and the lower the remaining power of the vehicle battery, the higher the target cooling start temperature threshold value. Therefore, when the battery temperature is greater than or equal to the optimal temperature threshold value, the battery cooling component is controlled to cool the battery, thereby avoiding the problem of high energy consumption of the battery due to more frequent cooling measures for the vehicle battery, thereby reducing the energy consumption of the vehicle battery and improving the vehicle's endurance. It is achieved that by judging whether the battery SOC is greater than the first preset threshold value, it is determined whether the remaining power of the vehicle battery is sufficient. When the remaining power of the vehicle battery is relatively sufficient, the lower first cooling start temperature threshold value can be used as the target cooling start temperature threshold value to ensure the best driving experience of the vehicle. When the remaining power of the vehicle battery is low, the higher second cooling start temperature threshold value is used as the target cooling start temperature threshold value to avoid consuming too much power on battery cooling and temperature reduction, so that as much power as possible is used for vehicle endurance, thereby improving the vehicle's endurance.

[0093] Device Embodiment

[0094] The embodiment of the present application provides a battery cooling control device, wherein: Figure 5 A schematic diagram of the structure of a battery heating control device provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the device includes: a first monitoring module 11, a first determining module 12 and a first controlling module 13. Figure 5 You can see the connection relationship between several modules.

[0095] The first monitoring module 11 is used to monitor the battery temperature and battery SOC when the vehicle is in a driving state; the battery SOC is used to characterize the remaining state of the vehicle battery power;

[0096] A first determination module 12 is used to determine a target cooling start temperature threshold value matching the battery SOC from a plurality of cooling start temperature threshold values ​​based on the battery SOC; the target cooling start temperature threshold value is negatively correlated with the battery SOC;

[0097] The first control module 13 is configured to control and start a battery cooling component to cool the battery if the battery temperature is greater than or equal to a target cooling start temperature threshold.

[0098] Optionally, the multiple cooling start temperature thresholds include at least a first cooling start temperature threshold and a second cooling start temperature threshold, and the first cooling start temperature threshold is less than the second cooling start temperature threshold;

[0099] The determination module includes: a judgment unit, a first determination unit and a second determination unit.

[0100] The judging unit is used to judge whether the battery SOC is greater than a first preset threshold;

[0101] a first determining unit, configured to use a first cooling start temperature threshold as a target cooling start temperature threshold if the battery SOC is greater than a first preset threshold;

[0102] The second determination unit is used to use the second cooling start temperature threshold as the target cooling start temperature threshold if the battery SOC is less than or equal to the first preset threshold and the battery SOC is greater than the second preset threshold; the first preset threshold is greater than the second preset threshold.

[0103] Optionally, the determination module further includes: a startup prohibition unit, configured to prohibit starting a battery cooling component to cool the battery if the battery SOC is less than or equal to a second preset threshold.

[0104] Optionally, the battery cooling control device further includes: a second monitoring module, a second determining module and a second control module.

[0105] The second monitoring module is used to monitor the target temperature and target SOC of the battery when it is in a cooling state after controlling the battery cooling component to start cooling the battery;

[0106] A second determination module is used to determine a target cooling shutdown temperature threshold value matching the target SOC from a plurality of cooling shutdown temperature threshold values ​​based on the target SOC; the target cooling shutdown temperature threshold value is negatively correlated with the target SOC;

[0107] The second control module is configured to control stopping cooling of the battery by the battery cooling component if the target temperature is less than or equal to a target cooling shutdown temperature threshold.

[0108] Storage Medium Embodiments

[0109] The embodiment of the present application provides a computer-readable storage medium, on which a program is stored, wherein when the program is executed by a processor, some or all of the steps in the battery cooling control method described in the aforementioned method embodiment of the present application are implemented. The storage medium can be a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0110] Processor Embodiments

[0111] An embodiment of the present application provides a processor, which is used to run a program, wherein when the program is running, some or all of the steps in the battery cooling control method introduced in the above method embodiment are executed.

[0112] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The device embodiment described above is merely schematic, in which the unit described as a separate component may or may not be physically separated, and the component prompted as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0113] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A battery cooling control method, characterized in that: include: Monitoring the battery temperature and battery SOC when the vehicle is in a driving state; the battery SOC is used to characterize the remaining state of the battery power of the vehicle; Determining a target cooling start temperature threshold value matching the battery SOC from a plurality of cooling start temperature threshold values ​​based on the battery SOC; the target cooling start temperature threshold value is negatively correlated with the battery SOC; If the battery temperature is greater than or equal to the target cooling start temperature threshold, the battery cooling component is controlled to start cooling the battery.

2. The method according to claim 1, characterized in that The multiple cooling start temperature thresholds include at least a first cooling start temperature threshold and a second cooling start temperature threshold, and the first cooling start temperature threshold is less than the second cooling start temperature threshold; and determining a target cooling start temperature threshold matching the battery SOC from the multiple cooling start temperature thresholds based on the battery SOC includes: Determining whether the battery SOC is greater than a first preset threshold; If the battery SOC is greater than the first preset threshold, the first cooling start temperature threshold is used as the target cooling start temperature threshold; If the battery SOC is less than or equal to the first preset threshold, and the battery SOC is greater than a second preset threshold, the second cooling start temperature threshold is used as the target cooling start temperature threshold; the first preset threshold is greater than the second preset threshold.

3. The method according to claim 2, characterized in that The method further comprises: If the battery SOC is less than or equal to the second preset threshold, it is prohibited to start the battery cooling component to cool the battery.

4. The method according to claim 1, characterized in that: After controlling the battery cooling component to start cooling the battery, the method further includes: monitoring a target temperature and a target SOC when the battery is in a cooling state; determining a target cooling shutdown temperature threshold value matching the target SOC from a plurality of cooling shutdown temperature threshold values ​​based on the target SOC; the target cooling shutdown temperature threshold value being negatively correlated with the target SOC; If the target temperature is less than or equal to the target cooling off temperature threshold, control stops cooling of the battery by the battery cooling component.

5. A battery cooling control device, characterized in that: include: The first monitoring module is used to monitor the battery temperature and battery SOC when the vehicle is in a driving state; the battery SOC is used to characterize the remaining state of the battery power of the vehicle; A first determination module is used to determine a target cooling start temperature threshold value matching the battery SOC from a plurality of cooling start temperature threshold values ​​based on the battery SOC; the target cooling start temperature threshold value is negatively correlated with the battery SOC; The first control module is configured to control a battery cooling component to cool the battery if the battery temperature is greater than or equal to the target cooling start temperature threshold.

6. The device according to claim 5, characterized in that The plurality of cooling start temperature thresholds include at least a first cooling start temperature threshold and a second cooling start temperature threshold, wherein the first cooling start temperature threshold is less than the second cooling start temperature threshold; The determination module comprises: A judging unit, configured to judge whether the battery SOC is greater than a first preset threshold; a first determining unit, configured to use the first cooling start temperature threshold as the target cooling start temperature threshold if the battery SOC is greater than the first preset threshold; The second determination unit is used to use the second cooling start temperature threshold as the target cooling start temperature threshold if the battery SOC is less than or equal to the first preset threshold and the battery SOC is greater than the second preset threshold; the first preset threshold is greater than the second preset threshold.

7. The device according to claim 6, characterized in that The determination module also includes: The startup prohibition unit is used to prohibit starting the battery cooling component to cool the battery if the battery SOC is less than or equal to the second preset threshold.

8. The device according to claim 5, characterized in that The device also includes: A second monitoring module, for monitoring a target temperature and a target SOC of the battery when the battery is in a cooling state after controlling the battery cooling component to start cooling the battery; A second determination module is used to determine a target cooling shutdown temperature threshold value matching the target SOC from a plurality of cooling shutdown temperature threshold values ​​based on the target SOC; the target cooling shutdown temperature threshold value is negatively correlated with the target SOC; The second control module is configured to control stopping the battery cooling component from cooling the battery if the target temperature is less than or equal to the target cooling shutdown temperature threshold.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the battery cooling control method according to any one of claims 1 to 4 is implemented.

10. A processor, characterized in that: Used to run a computer program, which, when running, executes the battery cooling control method according to any one of claims 1 to 4.

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