Battery thermal management method, device and equipment and computer readable storage medium

Abstract

The invention discloses a battery thermal management method, a battery thermal management device, battery thermal management equipment and a computer readable storage medium, relates to the technical field of battery thermal management, is applied to a battery thermal management device comprising an information acquisition unit and a thermal management unit, and comprises the following steps: acquiring battery management information acquired by the information acquisition unit, the battery management information comprises a real-time temperature value and a real-time electric quantity value of the battery; a heat management mode is determined according to the real-time temperature value, and the heat management mode comprises a first heat management mode for dissipating heat of the battery and a second heat management mode for heating the battery; when the thermal management mode is a first thermal management mode, controlling the thermal management unit according to the real-time electric quantity value so as to realize thermal management of the battery; and when the thermal management mode is the second thermal management mode, the battery is controlled according to the real-time electric quantity value, so that thermal management of the battery is realized, and the thermal management cost of the battery is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery thermal management, and in particular to a battery thermal management method, device, equipment and computer-readable storage medium. Background Art

[0002] As batteries are used more and more frequently in different fields, users have also put forward higher requirements for battery thermal management methods.

[0003] The traditional battery thermal management method is to select high-temperature resistant batteries with different properties for different products, and then implement battery thermal management based on the properties of the battery itself. This battery thermal management method has great defects. Some products need to use high-temperature resistant batteries. That is, this battery thermal management method will cause the cost of battery thermal management to be high because some products need to use high-temperature resistant batteries.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present application is to provide a battery thermal management method, device, equipment and computer-readable storage medium, aiming to solve the technical problem of high cost of battery thermal management.

[0006] To achieve the above-mentioned purpose, the present application proposes a battery thermal management method, which is applied to a battery thermal management device, wherein the battery thermal management device includes an information acquisition unit and a thermal management unit, and the battery thermal management method includes: Acquire battery management information collected by the information collection unit, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; Determining a thermal management mode according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; When the thermal management mode is the first thermal management mode, controlling the thermal management unit according to the real-time power value to implement the battery thermal management; When the thermal management mode is the second thermal management mode, the battery is controlled according to the real-time power value to achieve the battery thermal management.

[0007] In one embodiment, the battery includes a plurality of battery blocks, the real-time temperature value includes a battery block temperature value of each of the battery blocks, and when the battery blocks are in a preset separated arrangement state, the step of determining the thermal management mode according to the real-time temperature value includes: For each of the battery blocks, determining a battery block temperature threshold corresponding to the battery block temperature value, wherein the battery block temperature threshold includes a minimum operating temperature and a maximum operating temperature of the battery block; When the battery block temperature value is greater than the maximum operating temperature, determining that the thermal management mode is a first thermal management mode; When the battery block temperature value is less than the minimum operating temperature, determining that the thermal management mode is a second thermal management mode; When the battery block is in a preset contact arrangement state, after the step of determining the thermal management mode according to the real-time temperature value, the method further includes: For each target battery block whose thermal management mode is the second thermal management mode, determining a neighboring battery block adjacent to the target battery block, and detecting whether a battery block temperature value of the neighboring battery block is greater than a theoretical temperature value of the target battery block; When the battery block temperature value of the adjacent battery block is greater than the theoretical temperature value of the target battery block, the thermal management mode is determined to be a preset normal operating mode.

[0008] In one embodiment, the thermal management unit includes a selector and a limiter, a selection input terminal of the selector is connected to an output terminal of a battery block in the battery, wherein the selection input terminal and the output terminal of the battery block are connected through the limiter, the selection output terminal of the selector serves as the output terminal of the battery, the selection control terminal of the selector is connected to a battery thermal management controller in the battery thermal management device, the control terminal of the limiter is connected to the battery thermal management controller, the real-time power value includes a single output power of each battery block in the battery and a total output power of the battery, and the step of controlling the thermal management unit according to the real-time power value includes: Determine a first battery block corresponding to the first thermal management mode, and for each of the first battery blocks, determine a first single output power corresponding to the first battery block, wherein the first single output power includes an output power of the first battery block in the single output power; When the first single output power is greater than the minimum output power of the first battery block, a first limiter corresponding to the first battery block is controlled to limit current, wherein the first limiter includes a limiter connected to the first battery block and the selection input end; When the first single output power is less than or equal to the minimum output power of the first battery block, the sum of the single output powers of each second battery block is determined as the first output power sum, and when the first output power sum is greater than the total output power, the selection input end corresponding to the first battery block is controlled to disconnect from the selection output end; when the first output power sum is less than or equal to the total output power, the thermal management unit is controlled according to the total output power of the second battery block and the battery, wherein the second battery block includes other battery blocks in the battery block except the first battery block.

[0009] In one embodiment, the thermal management unit further includes a heat transfer end of a heat transfer device, the heat transfer device is connected to the battery thermal management controller, and the step of controlling the thermal management unit according to the total output power of the second battery block and the battery includes: For each of the second battery blocks, determine the optimal output power of the second battery block, and determine the sum of the optimal output power of all the second battery blocks as the second output power sum; When the second output power sum is greater than the total output power, controlling the second limiter corresponding to the second battery block to limit current, wherein the second limiter includes a limiter connected to the second battery block and the selection input end; When the second output power is less than or equal to the total output power, the first limiter corresponding to the first battery block is controlled to limit the current to the minimum output power, and the heat transfer end of the heat conduction device is controlled to transfer heat to the first battery block.

[0010] In one embodiment, the step of controlling the battery according to the real-time power value includes: Determine a single output power in the real-time power value and a total output power of the battery, wherein the single output power includes the output power of each battery block in the battery; Determine a third battery block corresponding to the second thermal management mode, and for each of the third battery blocks, determine a second single output power corresponding to the third battery block, wherein the second single output power includes the output power of the third battery block in the single output power; When the second single output power is less than the first maximum output power of the third battery block, controlling the third battery block to output at the first maximum output power; When the second single output power is greater than or equal to the first maximum output power of the third battery block, a fourth battery block adjacent to the third battery block is determined, and the fourth battery block is controlled to output at the second maximum output power.

[0011] In one embodiment, after the step of controlling the battery according to the real-time power value, the following steps are included: Determining a third battery block corresponding to the second thermal management mode, and determining a target real-time temperature value and a target temperature threshold corresponding to the third battery block; When the target real-time temperature value is less than the target temperature threshold and there is heat conduction heat at the heat conduction end of the heat conduction device in the thermal management unit, controlling the heat conduction end of the heat conduction device to conduct heat to the third battery block; When the target real-time temperature value is less than the target temperature threshold and there is no heat conduction heat at the heat conduction end of the conduction unit in the thermal management unit, the heat conduction end of the heat conduction device is controlled to conduct heat to the fifth battery block, and the heat conduction end of the heat conduction device is controlled to conduct heat to the third battery block, wherein the fifth battery block includes a battery block in the battery having a temperature value greater than a preset temperature value.

[0012] In one embodiment, after the step of determining the thermal management mode according to the real-time temperature value, the battery thermal management method further includes: Determining a first battery block corresponding to the first thermal management mode, and determining a third battery block corresponding to the first thermal management mode; Determine a cooling temperature corresponding to the first battery block, and determine a heating temperature corresponding to the third battery block; When the first battery block and the third battery block are in an adjacent relationship and the cooling temperature matches the heating temperature, the output power of the first battery block and the output power of the third battery block are adjusted based on a preset ratio value; When the first battery block and the third battery block are not in an adjacent relationship and the cooling temperature matches the heating temperature, the output power of the first battery block and the second battery block is adjusted based on a preset proportional value, and the heat conduction device in the thermal management unit is controlled to conduct heat to the first battery block and the third battery block; When the cooling temperature does not match the heating temperature, the step of controlling the thermal management unit according to the real-time power value and the step of controlling the battery according to the real-time power value are performed.

[0013] In addition, to achieve the above-mentioned purpose, the present application also proposes a battery thermal management device, the device comprising a battery thermal management controller, an information acquisition unit and a thermal management unit, the battery thermal management controller is connected to the information acquisition unit and the thermal management unit, and the battery thermal management controller comprises: An information acquisition module, used to acquire the battery management information collected by the information acquisition unit, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; a mode determination module, configured to determine a thermal management mode according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; a first management module, configured to control the thermal management unit according to the real-time power value to implement the battery thermal management when the thermal management mode is the first thermal management mode; The second management module is used to control the battery according to the real-time power value to achieve the battery thermal management when the thermal management mode is the second thermal management mode.

[0014] In addition, to achieve the above-mentioned purpose, the present application also proposes a battery thermal management device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the battery thermal management method as described above.

[0015] In addition, to achieve the above objectives, the present application also proposes a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the battery thermal management method described above are implemented.

[0016] The embodiment of the present application provides a battery thermal management method, which is applied to a battery thermal management device, wherein the battery thermal management device includes an information acquisition unit and a thermal management unit, and obtains battery management information collected by the information acquisition unit, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; determines a thermal management mode according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; when the thermal management mode is the first thermal management mode, controls the thermal management unit according to the real-time power value to achieve the battery thermal management; when the thermal management mode is the second thermal management mode, controls the battery according to the real-time power value to achieve the battery thermal management. After determining the thermal management mode according to the real-time temperature value, the battery thermal management method controls the thermal management unit based on the real-time power value in different modes to achieve the battery thermal management, and or controls the battery based on the real-time power value to achieve the battery thermal management, thereby avoiding the problem that some products need to use high temperature resistant batteries, thereby reducing the cost of battery thermal management. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the process of the first embodiment of the battery thermal management method of the present application; Figure 2A schematic diagram of an implementation process of the battery thermal management method of the present application; Figure 3 This is a flow chart of a second embodiment of the battery thermal management method of the present application; Figure 4 This is a module schematic diagram of the battery thermal management device of this application; Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in this application.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0021] For products with different usage requirements, batteries with different temperature resistance values ​​are generally used to power the products, which results in high costs for battery thermal management. The commonly used method is to cool the batteries, but cooling generally requires the use of a relatively expensive combination of instruments for temperature control. At the same time, for smaller products, the temperature control instruments are partially arranged, which results in high costs for battery thermal management for larger products, while battery thermal management cannot be achieved for smaller products. Another point worth mentioning is that temperature control generally uses physical temperature control methods, such as ventilation, cooling pipe circulation cooling, etc. At this time, the originally sealed battery (such as for products with higher sealing) will be exposed to the external environment, which may cause water vapor and other substances in the external environment to affect the battery, thereby affecting the battery life.

[0022] Therefore, based on the shortcomings of the above battery thermal management solutions, the battery thermal management method of the present application is proposed. The solution of the embodiment of the present application is: after determining the thermal management mode by the real-time temperature value, the thermal management unit is controlled based on the real-time power value in different modes to achieve battery thermal management, and or, the battery is controlled based on the real-time power value to achieve battery thermal management, thereby avoiding the problem that some products need to use high temperature resistant batteries, thereby reducing the cost of battery thermal management.

[0023] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or a device capable of realizing the above functions, a battery thermal management device, etc. The following takes the battery thermal management device as an example to illustrate this embodiment and the following embodiments.

[0024] Based on this, the present application embodiment provides a battery thermal management method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the battery thermal management method of the present application.

[0025] Reference Figure 1 The present application provides a battery thermal management method, which is applied to a battery thermal management device. The battery thermal management device includes an information acquisition unit and a thermal management unit. In a first embodiment of the battery thermal management method, the battery thermal management method includes: Step S10, acquiring battery management information collected by the information collection unit, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; Step S20, determining a thermal management mode according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; Exemplarily, a battery thermal management method is applied to a battery thermal management device, which includes an information acquisition unit and a thermal management unit, wherein the information acquisition unit can be used to collect the temperature and power value of each battery block in the battery, and can use relevant temperature sensors, current sensors, voltage sensors, etc. The thermal management unit is used to control whether the battery block is connected to the battery output or not, or to limit the output of the battery block, as well as a heat conduction and heat transfer structure, so as to perform thermal management of the battery based on the battery-related information collected by the information acquisition unit. The battery's own output can be directly controlled, and the thermal management of the battery can also be controlled using the thermal management unit. Battery thermal management can be achieved based on the battery thermal management device and the battery thermal management method executed on the device, thereby reducing the restriction on the temperature resistance of the battery, and thus reducing the cost of battery thermal management.

[0026] In this embodiment, the battery thermal management can be realized by acquiring the battery management information collected by the information collection unit in real time or based on the interval time, and then processing the battery management information, wherein the battery management information includes the real-time temperature value and the real-time power value of the battery, the real-time temperature value refers to the real-time temperature of each battery block in the battery, and the real-time power value refers to the output power of each battery block in the battery, which can be a current, voltage or power value, and the present application is explained with the power value. At this time, the real-time temperature value will be judged, and then it is determined that the battery block in the battery at this time is the first thermal management mode of battery heat dissipation or the second thermal management mode of battery heating, that is, the thermal management mode is determined considering the actual temperature and the properties of the battery block in the battery. It is worth noting that at this time, in order to ensure the effective implementation of thermal management, battery blocks with different temperature resistance properties can be set in the battery (at this time, the temperature resistance properties of the battery block may also change due to different usage time limits) to realize battery thermal management between battery blocks with different temperature resistance properties, while ensuring the heat interaction between battery blocks with temperature resistance properties and improving the battery usage scenario, thereby greatly improving the functionality of the battery.

[0027] Step S30, when the thermal management mode is the first thermal management mode, controlling the thermal management unit according to the real-time power value to implement the battery thermal management; Step S40, when the thermal management mode is the second thermal management mode, controlling the battery according to the real-time power value to implement the battery thermal management.

[0028] In this embodiment, after the thermal management mode is determined, control will be performed based on two different thermal management modes. When the thermal management mode is the first thermal management mode, it will be determined that there is a battery block that needs to be cooled, and then the thermal management unit will be controlled based on the real-time power value to control the battery to cool and achieve thermal management. When the thermal management mode is the second thermal management mode, the battery will be controlled based on the real-time power value to control the battery to heat up to the required temperature to achieve the battery thermal management. At this time, the battery can be thermally managed based on different thermal management modes to achieve the battery thermal management function in different scenarios, thereby ensuring the accuracy of battery thermal management.

[0029] In one embodiment, referring to Figure 2 , Figure 2This is a schematic diagram of an implementation process of the battery thermal management method of the present application. By obtaining temperature (actual temperature and the operating temperature requirements of the battery block itself, etc.) related information, that is, the real-time temperature value of the battery, the management mode can be determined based on the temperature-related information, that is, it includes a first thermal management mode for battery heat dissipation and a second thermal management mode for battery heating. At this time, when the mode is the heating management mode, the battery will be thermally managed directly based on the information such as the power in the relevant information, that is, the process of controlling the battery according to the real-time power value is executed at this time; when the mode is the heat dissipation management mode, the heat conduction and other devices will be thermally managed directly based on the information such as the power in the relevant information, that is, the process of controlling the thermal management unit according to the real-time power value is executed at this time. At this time, the impact of different needs on thermal management is taken into account, and the problem of some products needing to use high-temperature resistant batteries is avoided, thereby reducing the cost of battery thermal management.

[0030] In the present embodiment, a battery thermal management method is provided, which is applied to a battery thermal management device, wherein the battery thermal management device includes an information acquisition unit and a thermal management unit, and the battery management information collected by the information acquisition unit is obtained, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; a thermal management mode is determined according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; when the thermal management mode is the first thermal management mode, the thermal management unit is controlled according to the real-time power value to achieve the battery thermal management; when the thermal management mode is the second thermal management mode, the battery is controlled according to the real-time power value to achieve the battery thermal management. After the battery thermal management method determines the thermal management mode according to the real-time temperature value, the thermal management unit is controlled based on the real-time power value in different modes to achieve the battery thermal management, and or the battery is controlled based on the real-time power value to achieve the battery thermal management, thereby avoiding the problem that some products need to use high temperature resistant batteries, thereby reducing the cost of battery thermal management.

[0031] Further, based on the first embodiment of the present application, a second embodiment of the battery thermal management method of the present application is proposed. In this embodiment, in the above step S20, the battery includes a plurality of battery blocks, the real-time temperature value includes a battery block temperature value of each of the battery blocks, and when the battery blocks are in a preset separated arrangement state, the step of determining the thermal management mode according to the real-time temperature value includes: Step S21, for each of the battery blocks, determining a battery block temperature threshold corresponding to the battery block temperature value, wherein the battery block temperature threshold includes a minimum operating temperature and a maximum operating temperature of the battery block; Step S22, when the battery block temperature value is greater than the maximum operating temperature, determining that the thermal management mode is the first thermal management mode; Step S23: when the battery block temperature value is less than the minimum operating temperature, determining that the thermal management mode is the second thermal management mode.

[0032] In this embodiment, the battery includes a plurality of battery blocks, and the real-time temperature value collected at this time includes the battery block temperature value of each of the battery blocks, and then when the battery blocks are in a preset separated arrangement state, that is, each battery block is separately arranged, the battery block temperature threshold corresponding to the battery block temperature value is determined for each battery block, which can be directly determined in the corresponding temperature table, that is, the temperature threshold of battery block A is determined to be A1-A2, and the temperature threshold of battery block B is determined to be B1-B2. The temperature table can define the temperature threshold of each battery block in the battery in advance, such as the temperature threshold of the battery block of material G is G1-G2, and can be defined to be positively correlated with the use time and a certain internal parameter (such as as the use time increases, the temperature of material G increases). The temperature threshold of the battery block of the quality is G1-mT-G2-mT, m is the defined change constant, and T is the usage time), that is, for each battery block, it includes the minimum operating temperature (the minimum operating temperature of the battery block) and the maximum operating temperature (the maximum operating temperature of the battery block), and then it can be determined that when the temperature value of the battery block is greater than the maximum operating temperature, the thermal management mode is determined to be the first thermal management mode, otherwise the thermal management mode will be determined to be the second thermal management mode, and then the thermal management mode of the battery can be determined based on the properties and actual temperature of the battery itself (between the minimum operating temperature and the maximum operating temperature, it is determined that the battery block does not need to be dissipated and heated, and this process ends) to facilitate subsequent thermal management. It is worth noting that if there are multiple battery blocks that need to be thermally managed, one of the most serious (the battery block with the most serious overtemperature that needs to be cooled, and / or the battery block with the most serious undertemperature that needs to be heated) can be selected to execute the control of the first thermal management mode or the second thermal management mode (that is, the subsequent process). When the battery block is in a preset contact arrangement state, after the step of determining the thermal management mode according to the real-time temperature value, it also includes: Step S24, for each target battery block whose thermal management mode is the second thermal management mode, determining a neighboring battery block adjacent to the target battery block, and detecting whether a battery block temperature value of the neighboring battery block is greater than a theoretical temperature value of the target battery block; Step S25 , when the battery block temperature value of the adjacent battery block is greater than the theoretical temperature value of the target battery block, determining that the thermal management mode is a preset normal operating mode.

[0033] In this embodiment, because the battery blocks inside the battery may still be in a preset contact arrangement state, that is, the battery blocks are contact arranged as batteries, the second thermal management mode will be re-controlled at this time, that is, the target battery block of the second thermal management mode is determined, and the target battery block refers to the battery block that needs to be cooled. After determining the target battery block, the adjacent batteries adjacent to the target battery block are determined, and then it is determined whether the battery block temperature of the adjacent battery block is greater than the theoretical temperature value of the target battery block. When the battery block temperature value of the adjacent battery block is greater than the theoretical temperature value of the target battery block, the thermal management mode can be directly determined to be the preset normal working mode. When the battery block temperature value of the adjacent battery block is not greater than the theoretical temperature value of the target battery block, steps S24-S25 are skipped and the subsequent steps are continued. Among them, the adjacent battery block refers to the battery block that is in contact with the target battery block, and the theoretical temperature value refers to a temperature value defined by the user, which is related to the minimum operating temperature of the target battery block. For example, the minimum operating temperature plus M is used as the theoretical temperature value, that is, the battery block temperature of the adjacent battery block can be used as a heat source to increase the temperature of the target battery block, thereby making the target battery block reach the required minimum operating temperature. The preset normal working mode refers to a mode that defines no need to dissipate heat or heat the battery block. At this time, through secondary judgment of the preset contact arrangement state, unnecessary heating control can be reduced to ensure the accuracy of thermal management and effective use of energy.

[0034] Further, based on the first embodiment and / or the second embodiment of the present application, a third embodiment of the battery thermal management method of the present application is proposed. In this embodiment, in the above step S30, the thermal management unit includes a selector and a limiter, a selection input terminal of the selector is connected to the output terminal of a battery block in the battery, wherein the selection input terminal and the output terminal of the battery block are connected through the limiter, the selection output terminal of the selector serves as the output terminal of the battery, the selection control terminal of the selector is connected to the battery thermal management controller in the battery thermal management device, and the control terminal of the limiter is connected to the battery thermal management controller, the real-time power value includes the single output power of each battery block in the battery and the total output power of the battery, and the step of controlling the thermal management unit according to the real-time power value includes: Step S31, determining a first battery block corresponding to the first thermal management mode, and determining, for each of the first battery blocks, a first single output power corresponding to the first battery block, wherein the first single output power includes an output power of the first battery block in the single output power; Step S32: when the first single output power is greater than the minimum output power of the first battery block, controlling a first limiter corresponding to the first battery block to limit current, wherein the first limiter includes a limiter connected to the first battery block and the selection input terminal; Step S33, when the first single output power is less than or equal to the minimum output power of the first battery block, the sum of the single output powers of the second battery blocks is determined as the first output power sum, and when the first output power sum is greater than the total output power, the selection input end corresponding to the first battery block is controlled to disconnect from the selection output end; when the first output power sum is less than or equal to the total output power, the thermal management unit is controlled according to the total output power of the second battery block and the battery, wherein the second battery block includes other battery blocks in the battery block except the first battery block.

[0035] In this embodiment, the thermal management unit includes a selector (a commonly used selector, taking six inputs and one output as an example, if the selection control terminal input is 000111, the first selection input terminal, the second selection input terminal and the third selection input terminal are connected to the selection output terminal, and the other selection input terminals are disconnected from the selection output terminal) and a limiter. The number of selection input terminals of the selector is greater than or equal to the number of battery blocks in the battery. At this time, the output terminal of each battery block can be connected to a selection input terminal, and a limiter is further connected between the selection input terminal and the output terminal of the battery block. On the one hand, the connection and disconnection of a certain battery block can be controlled by controlling the selector, and then the operation and standby of the battery block can be controlled. On the other hand, the output of the battery block can be limited by the limiter to reduce the output power of the battery block to reduce the heating of the battery block or increase the output power of the battery block to increase the heating of the battery block. The limiter can be a commonly used A device that limits the output power, and then controls the temperature of the battery block by limiting the output power. At this time, both the control end of the limiter and the selector are connected to the battery thermal management controller in the battery thermal management device to control the conduction of the selector and the limitation of the limiter. When performing battery thermal management control, the battery will be controlled in advance so that the output of the battery meets the output requirements. The real-time power value includes the single output power of each battery block in the battery (the output power of each battery block can be the output power of each battery block) and the total output power of the battery (the total output power of the entire battery, which can be the total output power of the entire battery), that is, the controller that controls the battery will process the required power supply demand, and then control the battery to meet the power supply demand (that is, assign a corresponding output power value to each battery block to meet the total output power of the battery), and perform thermal management on the battery during the power supply process. When the first thermal management mode is selected, the first battery block corresponding to the first thermal management mode will be determined, and then each first battery block will be processed according to the severity of the over-temperature respectively. For example, if the battery block q1 exceeds the maximum temperature 3 designed for itself, and the battery block q2 exceeds the maximum temperature 4 designed for itself, the battery block q2 will be processed first, and then the battery block q1 will be processed. For cooling, each battery needs to be thermally managed. The first single output power corresponding to the first battery block is determined. The first single output power refers to the output power of the first battery block in the single output power. At this time, it will be judged whether the first single output power is greater than its own minimum output power. Then, when it is greater than its own minimum output power, the first limiter corresponding to the first battery block will be directly controlled to limit the current. The first limiter includes a limiter connected to the first battery block and a selection input terminal. Because when the power supply is initially distributed, the properties and usage of the battery block itself will be taken into consideration. Therefore, it is possible that all battery blocks are appropriately controlled to output, rather than directly setting the output to the maximum (so appropriately reducing the output does not affect the normal output of the entire battery). In this way, the output of the first battery block with appropriately controlled output can be limited, thereby achieving a cooling effect.Among them, the minimum output power of the first battery block refers to the output power of the first battery block when the temperature is reduced as defined by the user. For example, if the 3.2V output can achieve the temperature reduction of the battery block, the first battery block can be limited based on the first limiter to achieve the temperature reduction of the first battery block at 3.2V or below 3.2V. When it is less than or equal to its own minimum output power at this time, the first battery block will not be cooled directly, but the total output power requirement will be considered to avoid the phenomenon that the total output power requirement cannot be met after the first battery block is directly controlled again. By determining the sum of the single output power of each second battery block (other battery blocks except the first battery block) as the first output power sum, and then when the first output power sum is greater than the total output power, it is determined that the entire battery can still meet the normal power supply requirement without the first battery block supplying power at this time, and then the selector can be directly controlled to disconnect the connection between the first battery block and the selected output end of the selector, so that the first battery block is in a state of stopping power supply to achieve the cooling effect. It is worth noting that the sum of the single output power of the second battery block as the first output power is actually the sum of the output power of all batteries other than the first battery block. At this time, the battery block that is not currently powered in the second battery block can also be considered. If it is greater than the total output power, it is necessary to control the power supply of the unpowered battery block, that is, connect the battery block to the selected output terminal. When it is less than or equal to the total output power, the thermal management unit will be controlled based on the total output power of the second battery block and the battery. At this time, it is determined that the first battery block cannot be controlled to be powered off, and then the thermal management unit needs to be controlled to achieve the cooling effect, thereby achieving the accuracy of battery thermal management when the battery needs to dissipate heat.

[0036] Furthermore, the thermal management unit further includes a heat transfer end of a heat conduction device, the heat conduction device is connected to the battery thermal management controller, and the step of controlling the thermal management unit according to the total output power of the second battery block and the battery includes: Step S331, determining the optimal output power of each second battery block, and determining the sum of the optimal output power of all the second battery blocks as the second output power sum; Step S332, when the second output power sum is greater than the total output power, controlling the second limiter corresponding to the second battery block to limit current, wherein the second limiter includes a limiter connected to the second battery block and the selection input terminal; Step S333, when the second output power is less than or equal to the total output power, the first limiter corresponding to the first battery block is controlled to limit the current to the minimum output power, and the heat transfer end of the heat conduction device is controlled to transfer heat to the first battery block.

[0037] In this embodiment, the thermal management unit also includes a heat transfer end of the heat conduction device, that is, a part that absorbs and transfers heat. The battery thermal management controller controls the heat transfer end to move to the corresponding battery block, and then determines the optimal output power of each second battery block, so as to take the sum of all the optimal output powers of all the second battery blocks as the second output power sum. The second output power sum refers to the sum of the optimal output powers of all the second battery blocks, and the optimal output power refers to the maximum power that can be output by the second battery block. That is, at this time, all the second battery blocks are controlled to output the maximum output power. When the second output power sum is greater than the total output power, it will be determined that the first battery block does not need to be used for power supply, and then the first battery block can stop supplying power for heat dissipation, and the first battery block will be controlled to disconnect from the selected output end, and at the same time, the second limiter corresponding to the second battery block is controlled to limit the current, wherein the second limiter includes a limiter connected to the second battery block and the selected input end, that is, the second limiter controls each second battery block to output the optimal output power corresponding to itself. At this time, the optimal output power can be directly input into the battery thermal management controller, and then the second limiter is controlled based on the power input to the battery thermal management controller. The internal control logic is not described in detail here. When the second output power is less than or equal to the total output power, it is determined that the power supplied by the second battery block cannot meet the total output power requirement of the battery, and the first limiter corresponding to the first battery block is limited to the minimum output power. At the same time, the heat transfer end of the heat conduction device is controlled to transfer heat to the first battery block, that is, the heat transfer end of the heat conduction device is turned on to transfer heat to the first battery block, or the heat transfer end of the movable heat conduction device is directly moved to the contact position of the first battery block, thereby dissipating the heat of the first battery block, so as to complete the control of the heat dissipating first battery block and realize intelligent battery thermal management.

[0038] Further, based on the first embodiment, the second embodiment and / or the third embodiment of the present application, a fourth embodiment of the battery thermal management method of the present application is proposed. In this embodiment, referring to Figure 3 , Figure 3 This is a flow chart of a second embodiment of the battery thermal management method of the present application. In the above step S40, the step of controlling the battery according to the real-time power value includes: Step S41, determining a single output power in the real-time power value and a total output power of the battery, wherein the single output power includes the output power of each battery block in the battery; Step S42, determining a third battery block corresponding to the second thermal management mode, and for each of the third battery blocks, determining a second single output power corresponding to the third battery block, wherein the second single output power includes the output power of the third battery block in the single output power; Step S43, when the second single output power is less than the first maximum output power of the third battery block, controlling the third battery block to output at the first maximum output power; Step S44: when the second single output power is greater than or equal to the first maximum output power of the third battery block, a fourth battery block adjacent to the third battery block is determined, and the fourth battery block is controlled to output at the second maximum output power.

[0039] In this embodiment, when heating is required to make the battery block reach the operating temperature, the single output power in the real-time power value and the total output power of the battery will be determined first, wherein the single output power includes the output power of each battery block in the battery, and the third battery block corresponding to the second thermal management mode is determined at the same time, so as to determine the second single output power corresponding to the third battery block for each third battery block (the battery block that needs the largest temperature rise is also preferred, and the battery block with a smaller temperature rise can be directly not controlled until the working temperature returns), wherein the second single output power includes the output power of the third battery block in the single output power. Then, when the second single output power is less than the first maximum output power of the third battery block, that is, the output power of the third battery block has not reached its own maximum output power, that is, the first maximum output power, the third battery block can be controlled to output at the first maximum output power, so as to increase the temperature of the battery block by increasing the output. It is worth noting that at this time, the output at the first maximum output power can directly control the battery block, or can be limited and controlled based on the limiter connected to the battery block, or can be other ways, which are not limited here. When the second single output power is greater than or equal to the first maximum output power of the third battery block, the fourth battery block adjacent to the third battery block will be prioritized, and then the fourth battery block will be controlled to output at the second maximum output power. The second maximum output power output refers to the maximum output power of the fourth battery block, so as to heat up the third battery block through the fourth battery block. It is worth noting that because the battery blocks in the battery will not work at the same time, the heating properties between the battery blocks will differ due to the use time (different power levels cause different temperature changes of the battery blocks), so that the adjacent batteries can be heated up, and the battery thermal management during temperature control can be achieved, without the need to select temperature-resistant batteries, and the thermal management control of the entire battery can be achieved through the thermal management control of the internal battery blocks, thereby reducing the cost of battery thermal management control.

[0040] Further, based on the first embodiment, the second embodiment, the third embodiment and / or the fourth embodiment of the present application, a fifth embodiment of the battery thermal management method of the present application is proposed. In this embodiment, after the step of controlling the battery according to the real-time power value, the method includes: Step a, determining a third battery block corresponding to the second thermal management mode, and determining a target real-time temperature value and a target temperature threshold corresponding to the third battery block; Step b, when the target real-time temperature value is less than the target temperature threshold and there is heat conduction heat at the heat conduction end of the heat conduction device in the thermal management unit, controlling the heat conduction end of the heat conduction device to conduct heat to the third battery block; Step c, when the target real-time temperature value is less than the target temperature threshold and there is no heat conduction heat at the heat conduction end of the conduction unit in the thermal management unit, control the heat conduction end of the heat conduction device to conduct heat to the fifth battery block, and control the heat conduction end of the heat conduction device to conduct heat to the third battery block, wherein the fifth battery block includes a battery block in the battery having a temperature value greater than a preset temperature value.

[0041] In this embodiment, after the temperature of the third battery block is controlled, the target real-time temperature value and the target temperature threshold corresponding to the third battery block are determined. The target real-time temperature value refers to the actual temperature of the third battery block, and the target temperature threshold refers to the required theoretical temperature of the third battery block. At this time, when the target real-time temperature value is less than the target temperature threshold (if the target real-time temperature value is greater than or equal to the target temperature threshold, no subsequent control is required), and there is heat conduction heat at the heat conduction end of the heat conduction device in the thermal management unit, the heat conduction end of the heat conduction device is controlled to conduct heat to the third battery block, that is, the heat of the battery block temperature that needs to be dissipated is transferred to the third battery block to ensure the normal operation of the third battery block. The presence of heat conduction heat can be judged based on whether the heat conduction end of the heat conduction device contacts the first battery block that needs to be dissipated, or a temperature sensor is set at the heat conduction end for judgment, which is not limited here. At this time, the heat between the battery blocks can be transferred to ensure the normal operation of each battery block inside the battery. When the target real-time temperature value is less than the target temperature threshold value and there is no heat conduction heat at the heat conduction end of the conduction unit in the thermal management unit, the heat conduction end of the heat conduction device is controlled to conduct heat to the fifth battery block, and the heat conduction end of the heat conduction device is controlled to conduct heat to the third battery block, that is, the battery block with a higher temperature value is controlled to be transferred as a heat source, and the fifth battery block includes battery blocks with temperature values ​​greater than a preset temperature value (the optimal temperature set by the fifth battery block itself, which can be directly the minimum operating temperature of the fifth battery block), that is, battery blocks with temperature values ​​greater than the average temperature value set by themselves can be the fifth battery block. For example, the maximum temperature of a battery block is 10 and the minimum temperature is 5. When the temperature of the battery block is 6, there is no need to perform heating or cooling control, but it can be used as a heat source to heat the third battery block to complete thermal management inside the battery, thereby improving the intelligence and functionality of battery thermal management.

[0042] It is worth noting that at this time, the total output power of the battery blocks except the third battery block can be detected, and when the total output power is greater than or equal to the total output power, the third battery block can be directly controlled to stop working, and vice versa, the process after the above step of controlling the battery according to the real-time power value can be continued to ensure the intelligence of battery thermal management.

[0043] In one embodiment, after the step of determining the thermal management mode according to the real-time temperature value, the battery thermal management method further includes: Step d, determining a first battery block corresponding to the first thermal management mode, and determining a third battery block corresponding to the first thermal management mode; Step e, determining a cooling temperature corresponding to the first battery block, and determining a heating temperature corresponding to the third battery block; Step f, when the first battery block and the third battery block are in an adjacent relationship and the cooling temperature matches the heating temperature, the output power of the first battery block and the output power of the third battery block are adjusted based on a preset ratio value; Step g, when the first battery block and the third battery block are not in an adjacent relationship and the cooling temperature matches the heating temperature, the output power of the first battery block and the second battery block is adjusted based on a preset proportional value, and the heat conduction device in the thermal management unit is controlled to conduct heat to the first battery block and the third battery block; Step h, when the cooling temperature does not match the heating temperature, executing the step of controlling the thermal management unit according to the real-time power value and the step of controlling the battery according to the real-time power value.

[0044] In this embodiment, after determining the thermal management mode, the first battery block corresponding to the first thermal management mode is determined, and the third battery block corresponding to the first thermal management mode is determined, and the cooling temperature corresponding to the first battery block (i.e., the difference between the current temperature of the first battery block and the maximum operating temperature of the first battery block) is determined, and the heating temperature corresponding to the third battery block (i.e., the difference between the current temperature of the third battery block and the minimum operating temperature of the third battery block) is determined, and then it is determined whether the third battery block and the first battery block are in a neighboring relationship, and whether the heating temperature matches the cooling temperature (for example, if the custom heating temperature is about 5 degrees lower than the cooling temperature, it is determined that the two temperatures match, that is, the air conduction of heat is taken into account at this time), and the temperature exchange between the two temperatures can be directly performed at this time. As long as the two temperatures do not match, steps S30 and S40 will be directly executed. When the first battery block and the third battery block are in an adjacent relationship (if there are two battery blocks in proximity, the subsequent control will be executed on those two battery blocks, and the other battery blocks that are not adjacent will continue to execute steps S30 and S40), and the cooling temperature matches the heating temperature, the output power of the first battery block and the first battery block will be adjusted based on the preset ratio value. At this time, in order to satisfy the heat transfer between the two battery blocks, control will be performed based on a certain control strategy, that is, the first total output power of the two battery blocks is determined, and then the output is controlled based on the first total output power and the preset ratio value. For example, the preset ratio value defines that the heating battery block outputs 70% of the power and the cooling battery block outputs 30% of the power, so as to control the two battery blocks to achieve the best heating and cooling effect. The preset ratio value refers to the ratio value with the best heating and cooling effect, which can be obtained based on experiments, or can be adaptively set for battery blocks with different usage times, and then the heat exchange can be directly controlled based on the output power of the battery block to achieve thermal management.When the two batteries are not adjacent but the temperature values ​​match, the output power of the first battery block and the first battery block can be adjusted directly based on the preset ratio value, and the heat conduction device in the thermal management unit is controlled to conduct heat to the first battery block and the first battery block, that is, the heat transfer end (heat absorbing material) in the heat conduction device is connected to the first battery block that needs to be cooled down to transfer the heat of the first battery block, and the heat conduction end (heat dissipation material) in the heat conduction device is connected to the third battery block that needs to be cooled down to receive the heat of the first battery block, thereby realizing heat exchange between the first battery block and the third battery block, and at the same time, the power output of the first battery block and the third battery block can be controlled at a preset ratio value. The preset ratio value can be the above-mentioned preset ratio value, and can also be adaptively changed based on the above-mentioned preset ratio value. For example, when the two battery blocks are adjacent, the preset ratio value is defined that the battery block that is heated up outputs 75% of the power, and the battery block that is cooled down outputs 25% of the power, thereby directly realizing thermal management control inside the battery, so as to improve the intelligence of battery thermal management.

[0045] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the battery thermal management method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0046] The present application also provides a battery thermal management device, which includes a battery thermal management controller, an information acquisition unit and a thermal management unit. The battery thermal management controller is connected to the information acquisition unit and the thermal management unit. Please refer to Figure 4 , the battery thermal management controller comprises: An information acquisition module 10, used to acquire the battery management information collected by the information acquisition unit, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; a mode determination module 20, configured to determine a thermal management mode according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; a first management module 30, configured to control the thermal management unit according to the real-time power value to implement the battery thermal management when the thermal management mode is the first thermal management mode; The second management module 40 is used to control the battery according to the real-time power value to achieve the battery thermal management when the thermal management mode is the second thermal management mode.

[0047] The battery thermal management device provided by the present application adopts the battery thermal management method in the above embodiment, which can solve the technical problem of high cost of battery thermal management. Compared with the prior art, the beneficial effects of the battery thermal management device provided by the present application are the same as the beneficial effects of the battery thermal management method provided by the above embodiment, and other technical features in the battery thermal management device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0048] The present application provides a battery thermal management device, which includes: at least one processor; and a memory that is communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the battery thermal management method in the above-mentioned embodiment 1.

[0049] Reference below Figure 5 , which shows a schematic diagram of the structure of a battery thermal management device suitable for implementing an embodiment of the present application. The battery thermal management device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The battery thermal management device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0050] like Figure 5As shown, the battery thermal management device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the battery thermal management device are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following devices can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the battery thermal management device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a battery thermal management device with various devices, it should be understood that it is not required to implement or have all the devices shown. More or fewer devices can be implemented or have alternatively.

[0051] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0052] The battery thermal management device provided by the present application adopts the battery thermal management method in the above embodiment, which can solve the technical problem of high cost of battery thermal management. Compared with the prior art, the beneficial effects of the battery thermal management device provided by the present application are the same as the beneficial effects of the battery thermal management method provided by the above embodiment, and the other technical features in the battery thermal management device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0053] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which 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.

[0055] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the battery thermal management method in the above-mentioned embodiment.

[0056] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor devices, devices or components, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution device, device or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0057] The computer-readable storage medium may be included in the battery thermal management device; or may exist independently without being assembled into the battery thermal management device.

[0058] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the battery thermal management device, the battery thermal management device: Acquire battery management information collected by the information collection unit, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; Determining a thermal management mode according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; When the thermal management mode is the first thermal management mode, controlling the thermal management unit according to the real-time power value to implement the battery thermal management; When the thermal management mode is the second thermal management mode, the battery is controlled according to the real-time power value to achieve the battery thermal management.

[0059] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0060] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the device, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based device that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0061] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0062] The computer-readable storage medium provided in the present application stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned battery thermal management method, which can solve the technical problem of high cost of battery thermal management. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in the present application are the same as the beneficial effects of the battery thermal management method provided in the above-mentioned embodiment, and will not be elaborated here.

[0063] The present application also provides a computer program product, including a computer program, which implements the steps of the battery thermal management method as described above when executed by a processor.

[0064] The computer program product provided in this application can solve the technical problem of high cost of battery thermal management. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as the beneficial effects of the battery thermal management method provided in the above embodiment, which will not be repeated here.

[0065] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery thermal management method, characterized in that: The battery thermal management method is applied to a battery thermal management device, the battery thermal management device includes an information acquisition unit and a thermal management unit, and the battery thermal management method includes: Acquire battery management information collected by the information collection unit, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; Determining a thermal management mode according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; When the thermal management mode is the first thermal management mode, controlling the thermal management unit according to the real-time power value to implement the battery thermal management; When the thermal management mode is the second thermal management mode, the battery is controlled according to the real-time power value to achieve the battery thermal management.

2. The battery thermal management method according to claim 1, characterized in that: The battery includes a plurality of battery blocks, the real-time temperature value includes a battery block temperature value of each of the battery blocks, and when the battery blocks are in a preset separated arrangement state, the step of determining the thermal management mode according to the real-time temperature value includes: For each of the battery blocks, determining a battery block temperature threshold corresponding to the battery block temperature value, wherein the battery block temperature threshold includes a minimum operating temperature and a maximum operating temperature of the battery block; When the battery block temperature value is greater than the maximum operating temperature, determining that the thermal management mode is a first thermal management mode; When the battery block temperature value is less than the minimum operating temperature, determining that the thermal management mode is a second thermal management mode; When the battery block is in a preset contact arrangement state, after the step of determining the thermal management mode according to the real-time temperature value, the method further includes: For each target battery block whose thermal management mode is the second thermal management mode, determining a neighboring battery block adjacent to the target battery block, and detecting whether a battery block temperature value of the neighboring battery block is greater than a theoretical temperature value of the target battery block; When the battery block temperature value of the adjacent battery block is greater than the theoretical temperature value of the target battery block, the thermal management mode is determined to be a preset normal operating mode.

3. The battery thermal management method according to claim 1, characterized in that: The thermal management unit includes a selector and a limiter, a selection input end of the selector is connected to an output end of a battery block in the battery, wherein the selection input end and the output end of the battery block are connected through the limiter, the selection output end of the selector serves as the output end of the battery, the selection control end of the selector is connected to a battery thermal management controller in the battery thermal management device, and the control end of the limiter is connected to the battery thermal management controller, the real-time power value includes a single output power of each battery block in the battery and a total output power of the battery, and the step of controlling the thermal management unit according to the real-time power value includes: Determine a first battery block corresponding to the first thermal management mode, and for each of the first battery blocks, determine a first single output power corresponding to the first battery block, wherein the first single output power includes an output power of the first battery block in the single output power; When the first single output power is greater than the minimum output power of the first battery block, a first limiter corresponding to the first battery block is controlled to limit current, wherein the first limiter includes a limiter connected to the first battery block and the selection input end; When the first single output power is less than or equal to the minimum output power of the first battery block, the sum of the single output powers of each second battery block is determined as the first output power sum, and when the first output power sum is greater than the total output power, the selection input end corresponding to the first battery block is controlled to disconnect from the selection output end; when the first output power sum is less than or equal to the total output power, the thermal management unit is controlled according to the total output power of the second battery block and the battery, wherein the second battery block includes other battery blocks in the battery block except the first battery block.

4. The battery thermal management method according to claim 3, characterized in that: The thermal management unit further includes a heat transfer end of a heat conduction device, the heat conduction device is connected to the battery thermal management controller, and the step of controlling the thermal management unit according to the total output power of the second battery block and the battery includes: For each of the second battery blocks, determine the optimal output power of the second battery block, and determine the sum of the optimal output power of all the second battery blocks as the second output power sum; When the second output power sum is greater than the total output power, controlling the second limiter corresponding to the second battery block to limit current, wherein the second limiter includes a limiter connected to the second battery block and the selection input end; When the second output power is less than or equal to the total output power, the first limiter corresponding to the first battery block is controlled to limit the current to the minimum output power, and the heat transfer end of the heat conduction device is controlled to transfer heat to the first battery block.

5. The battery thermal management method according to claim 1, characterized in that: The step of controlling the battery according to the real-time power value comprises: Determine a single output power in the real-time power value and a total output power of the battery, wherein the single output power includes the output power of each battery block in the battery; Determine a third battery block corresponding to the second thermal management mode, and for each of the third battery blocks, determine a second single output power corresponding to the third battery block, wherein the second single output power includes the output power of the third battery block in the single output power; When the second single output power is less than the first maximum output power of the third battery block, controlling the third battery block to output at the first maximum output power; When the second single output power is greater than or equal to the first maximum output power of the third battery block, a fourth battery block adjacent to the third battery block is determined, and the fourth battery block is controlled to output at the second maximum output power.

6. The battery thermal management method according to claim 1, characterized in that: After the step of controlling the battery according to the real-time power value, the method further comprises: Determining a third battery block corresponding to the second thermal management mode, and determining a target real-time temperature value and a target temperature threshold corresponding to the third battery block; When the target real-time temperature value is less than the target temperature threshold and there is heat conduction heat at the heat conduction end of the heat conduction device in the thermal management unit, controlling the heat conduction end of the heat conduction device to conduct heat to the third battery block; When the target real-time temperature value is less than the target temperature threshold and there is no heat conduction heat at the heat conduction end of the conduction unit in the thermal management unit, the heat conduction end of the heat conduction device is controlled to conduct heat to the fifth battery block, and the heat conduction end of the heat conduction device is controlled to conduct heat to the third battery block, wherein the fifth battery block includes a battery block in the battery having a temperature value greater than a preset temperature value.

7. The battery thermal management method according to any one of claims 1 to 6, characterized in that: After the step of determining the thermal management mode according to the real-time temperature value, the battery thermal management method further includes: Determining a first battery block corresponding to the first thermal management mode, and determining a third battery block corresponding to the first thermal management mode; Determine a cooling temperature corresponding to the first battery block, and determine a heating temperature corresponding to the third battery block; When the first battery block and the third battery block are in an adjacent relationship and the cooling temperature matches the heating temperature, the output power of the first battery block and the output power of the third battery block are adjusted based on a preset ratio value; When the first battery block and the third battery block are not in an adjacent relationship and the cooling temperature matches the heating temperature, the output power of the first battery block and the second battery block is adjusted based on a preset proportional value, and the heat conduction device in the thermal management unit is controlled to conduct heat to the first battery block and the third battery block; When the cooling temperature does not match the heating temperature, the step of controlling the thermal management unit according to the real-time power value and the step of controlling the battery according to the real-time power value are performed.

8. A battery thermal management device, characterized in that: The battery thermal management device comprises a battery thermal management controller, an information acquisition unit and a thermal management unit, wherein the battery thermal management controller is connected to the information acquisition unit and the thermal management unit, and the battery thermal management controller comprises: An information acquisition module, used to acquire the battery management information collected by the information acquisition unit, wherein the battery management information includes a real-time temperature value and a real-time power value of the battery; a mode determination module, configured to determine a thermal management mode according to the real-time temperature value, wherein the thermal management mode includes a first thermal management mode for dissipating heat from the battery and a second thermal management mode for heating the battery; a first management module, configured to control the thermal management unit according to the real-time power value to implement the battery thermal management when the thermal management mode is the first thermal management mode; The second management module is used to control the battery according to the real-time power value to achieve the battery thermal management when the thermal management mode is the second thermal management mode.

9. A battery thermal management device, characterized in that: The battery thermal management device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the battery thermal management method according to any one of claims 1 to 7.

10. 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 steps of the battery thermal management method according to any one of claims 1 to 7 are implemented.

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