A battery liquid cooling plate determination method, a battery module, and an electronic device

Abstract

The application discloses a battery liquid cooling plate determination method, a battery module and an electronic device, and belongs to the technical field of new energy batteries. The battery liquid cooling plate determination method comprises the following steps: determining the size parameter of the battery liquid cooling plate matched with the battery pack based on the first geometric parameter of the battery pack and the second geometric parameter of the battery cell in the battery pack under the battery pack; determining the coating type of the heat insulation layer on the battery liquid cooling plate based on the battery type of the power battery and the battery capacity of the power battery; determining the coating thickness of the heat insulation layer on the battery liquid cooling plate based on the coating type and the corresponding electrical parameter of the power battery; and determining the target type corresponding to the battery liquid cooling plate based on the size parameter of the battery liquid cooling plate, the coating type of the heat insulation layer and the coating thickness of the heat insulation layer. The embodiments provided in the application improve the heat insulation of the power battery cell.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy battery, and particularly relates to a battery liquid cooling plate determination method, a battery module and electronic equipment. BACKGROUND

[0002] At present, with the increasing number of new energy electric vehicles, the safety problem is increasingly prominent. The new energy electric vehicle generally uses a lithium ion battery as a power source. Once the thermal runaway of the power battery occurs and the protection means is insufficient, the out-of-control battery cell will instantly ignite the surrounding battery cells, leading to thermal runaway of the entire battery pack, which may seriously threaten the safety of the user. Therefore, in order to ensure the safety of the user, how to improve the heat insulation of the battery cell is a problem to be solved at present. SUMMARY

[0003] The embodiments of the present application provide a battery liquid cooling plate determination method, a battery module and electronic equipment. The embodiments provided by the present application solve the technical problem of poor heat insulation of the battery cell in the prior art, and improve the heat insulation of the power battery cell.

[0004] In a first aspect, the embodiments of the present application provide a battery liquid cooling plate determination method. The battery liquid cooling plate is fixedly installed inside a battery pack of a preset power battery, and an outer surface of the battery liquid cooling plate is sprayed with a heat insulation layer. The battery pack includes a plurality of battery groups, each battery group includes a plurality of battery cells, and the battery liquid cooling plate is electrically connected to the plurality of battery cells. The battery liquid cooling plate determination method includes the following steps.

[0005] Based on a first geometric parameter of the battery pack and a second geometric parameter of the battery cell in the battery group below the battery pack, a size parameter of a battery liquid cooling plate matched with the battery pack is determined.

[0006] Based on a battery type of the power battery and a battery capacity of the power battery, a coating type of the heat insulation layer on the battery liquid cooling plate is determined.

[0007] Based on the coating type and an electrical parameter corresponding to the power battery, a coating thickness of the heat insulation layer on the battery liquid cooling plate is determined.

[0008] Based on the size parameter of the battery liquid cooling plate, the coating type of the heat insulation layer and the coating thickness of the heat insulation layer, a target type corresponding to the battery liquid cooling plate is determined.

[0009] In an implementation, the first geometric parameter comprises a space volume parameter, the second geometric parameter comprises a cell size, and the determining the size parameter of the battery liquid cooling plate matched with the battery pack based on the first geometric parameter of the battery pack and the second geometric parameter of the cells in the battery pack under the battery pack comprises:

[0010] determining the initial size parameter of the battery liquid cooling plate matched with the battery pack based on the space volume parameter of the battery pack;

[0011] if the size deviation between the initial size parameter of the battery liquid cooling plate and the cell size of the cells in the battery pack under the battery pack does not exceed the preset deviation threshold, determining the size parameter of the battery liquid cooling plate matched with the battery pack as a first size;

[0012] if the size deviation between the initial size parameter of the battery liquid cooling plate and the cell size of the cells in the battery pack under the battery pack exceeds the preset deviation threshold, determining the size parameter of the battery liquid cooling plate matched with the battery pack as a second size.

[0013] In an implementation, the coating type comprises an alumina ceramic layer, an alumina-titanium ceramic layer, and a zirconia ceramic layer, and the determining the coating type of the thermal insulation layer on the battery liquid cooling plate based on the battery type of the power battery and the battery capacity of the power battery comprises:

[0014] if the battery type of the power battery is a high-temperature-resistant battery, determining the coating type of the thermal insulation layer on the battery liquid cooling plate as the alumina ceramic layer and the alumina-titanium ceramic layer based on the battery capacity of the high-temperature-resistant battery;

[0015] if the battery type of the power battery is a non-high-temperature-resistant battery, determining the coating type of the thermal insulation layer on the battery liquid cooling plate as the zirconia ceramic layer, the alumina ceramic layer, and the alumina-titanium ceramic layer based on the battery capacity of the non-high-temperature-resistant battery.

[0016] In an implementation, the electrical parameter comprises a voltage, and the determining the coating thickness of the thermal insulation layer on the battery liquid cooling plate based on the coating type and the corresponding electrical parameter of the power battery comprises:

[0017] determining the coating voltage difference corresponding to each coating type at different coating thicknesses based on each coating type and a preset coating thickness-voltage difference data table, wherein the coating voltage difference is used to represent the voltage difference intensity resisted by different coatings;

[0018] determining the coating thickness of the oxide ceramic layer on the battery liquid cooling plate based on each coating voltage difference and the corresponding battery pack voltage of the power battery.

[0019] In a second aspect, the embodiment of the present application provides a battery module, comprising the battery liquid cooling plate and the battery pack according to the first aspect.

[0020] In a feasible implementation, the top and the side surface of the battery liquid cooling plate in the battery module are sprayed with the oxidation ceramic layer, and the length of the battery liquid cooling plate is equal to the length of the battery cell.

[0021] In a feasible implementation, the top of the battery liquid cooling plate in the battery module is sprayed with the oxidation ceramic layer, and the length of the battery liquid cooling plate is greater than the length of the battery cell.

[0022] In a third aspect, the embodiment of the present application provides a vehicle, comprising the battery module according to the second aspect.

[0023] In a fourth aspect, the embodiment of the present application provides an electronic device, comprising a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, and the machine readable instructions are executed by the processor to perform the steps of the determination method of the battery liquid cooling plate.

[0024] In a fifth aspect, the embodiment of the present application provides a computer readable storage medium, the computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps of the determination method of the battery liquid cooling plate.

[0025] Compared with the prior art, the determination method of the battery liquid cooling plate, the battery module and the electronic device provided by the embodiment of the present application determine the size parameters of the battery liquid cooling plate matched with the battery pack based on the first geometric parameters of the battery pack and the second geometric parameters of the battery cell in the battery pack under the battery pack, determine the coating type of the heat insulation layer on the battery liquid cooling plate based on the battery type of the power battery and the battery capacity of the power battery, then determine the coating thickness of the heat insulation layer on the battery liquid cooling plate based on the coating type and the corresponding electrical parameters of the power battery, and finally determine the target type of the battery liquid cooling plate based on the size parameters of the battery liquid cooling plate, the coating type of the heat insulation layer and the coating thickness of the heat insulation layer. Through the determination of the target type of the battery liquid cooling plate, the multiple battery cells in each battery pack are connected to the battery liquid cooling plate, the heat insulation between the battery cells is improved, and the possibility of heat spread between different battery cells in the same module or different battery cells in different modules is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1A flow chart of a determination method of a battery liquid cooling plate provided by an embodiment of the present application;

[0027] Figure 2 A structural schematic diagram of a battery module provided by an embodiment of the present application;

[0028] Figure 3 A structural schematic diagram of a battery liquid cooling plate in a battery module provided by an embodiment of the present application;

[0029] Figure 4 A structural schematic diagram of a battery liquid cooling plate in a battery module provided by an embodiment of the present application;

[0030] Figure 5 A structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0031] Figure 6 A structural schematic diagram of an electronic device provided by an embodiment of the present application.

[0032] Figure 5 And Figure 6 The correspondence between the reference signs and the names of the drawings in the above embodiments is as follows:

[0033] 10 vehicle; 200 battery module; 210 battery liquid cooling plate; 220 battery pack; 230 battery cell; 301 oxidation ceramic layer; 302 first flow channel; 401 second flow channel; 500 vehicle fault determination device; 600 electronic device; 610 processor; 620 memory; 630 bus. DETAILED DESCRIPTION

[0034] In order to better understand the technical solutions provided by the embodiments of the present application, the technical solutions of the embodiments of the present application will be described in detail below with the aid of the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0035] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. The terms "two or more" and "two or more than two" include both two and more than two entities.

[0036] Firstly, the application scenarios applicable to the present application are introduced. The embodiments provided by the present application are applicable to the technical field of new energy battery.

[0037] At present, with the increasing number of new energy electric vehicles, its safety problem is increasingly prominent. New energy electric vehicles generally use lithium ion batteries as power sources. Once the thermal runaway of the power battery occurs and the protection means is insufficient, the out-of-control battery cell will instantly ignite the surrounding battery cells, leading to thermal runaway of the entire battery pack, which may seriously threaten the safety of users. Therefore, in order to ensure the safety of users, how to improve the thermal insulation of the battery cell is a problem to be solved at present.

[0038] However, the electrical insulation failure between the battery cells and the modules will cause short circuit between the battery cells in the same module or between different battery cells in different modules, which may cause a chain thermal runaway of the battery cells under the impact of a large current in an instant and continuously. The chain thermal runaway caused by the short circuit between the battery cells is essentially a thermal diffusion. Therefore, it is necessary to reduce the thermal diffusion from the source of the short circuit of the battery cells and improve the thermal insulation of the battery cells.

[0039] Based on this, the embodiments of the present application provide a battery liquid cooling plate determination method, a battery module and an electronic device. The embodiments provided by the present application solve the technical problem of poor thermal insulation of the battery cells in the prior art, and improve the thermal insulation of the power battery cells.

[0040] Figure 1 A flow chart of a battery liquid cooling plate determination method provided by an embodiment of the present application is shown in Figure 1 The battery liquid cooling plate is fixedly installed inside a battery pack of a preset power battery, and the outer surface of the battery liquid cooling plate is sprayed with a thermal insulation layer. The battery pack includes a plurality of battery groups, each battery group includes a plurality of battery cells, and the battery liquid cooling plate is electrically connected with the battery cells.

[0041] Illustratively, the outer surface of the battery liquid cooling plate in the embodiments provided by the present application is sprayed with a thermal insulation layer, which can be an oxide ceramic layer. The oxide ceramic coating has a mature application process in the preparation of the positive plate of the battery cell material, and can withstand a high temperature of hundreds to thousands, far exceeding the temperature of the thermal runaway of the preset power battery. The Mohs hardness of the oxide ceramic coating is as high as about 9, and can withstand the positive impact of high-temperature high-speed smoke generated by the thermal runaway of the battery cell. Thus, the battery liquid cooling plate can be prevented from leaking due to high-temperature melting. The oxide ceramic coating has wear resistance and can withstand the lateral impact of high-temperature high-speed smoke generated by the thermal runaway of the battery cell. Thus, the coating can be prevented from being washed away. The oxide ceramic coating has extremely high electrical insulation performance, and can be used as a conducting component of the battery liquid cooling plate when multiple battery cells in the battery pack are in thermal runaway. Thus, the risk of short circuit between the battery cells is reduced. In addition, the oxide ceramic coating can also block the path of the battery cells between the modules when the battery cells at different positions of different modules are in thermal runaway.

[0042] It should be noted that the oxide ceramic layer selected in the embodiments provided by the present application has good thermal conductivity, which does not affect the heat exchange of the battery liquid cooling plate inside the preset power battery. In addition, the thermal conductivity coefficient of the oxide ceramic layer in the embodiments provided by the present application is specifically but not limited to 20 W / (m*K) or more.

[0043] The determination method of the battery liquid cooling plate includes the following steps:

[0044] S101, based on the first geometric parameter of the battery pack and the second geometric parameter of the battery cell in the battery pack under the battery pack, the size parameter of the battery liquid cooling plate matched with the battery pack is determined.

[0045] In this step, before determining the target type of the battery liquid cooling plate in the battery pack of the preset power battery, the first geometric parameter of the preset battery pack to be detected and the second geometric parameter of the battery cell in the battery pack are first determined. The first geometric parameter and the second geometric parameter are compared to determine the comparison relationship between the two types of geometric parameters. Then, according to the comparison relationship, the size parameter of the battery liquid cooling plate matched with the battery pack is determined.

[0046] It can be understood that in the embodiments provided by the present application, the position of the oxide ceramic coating to be sprayed is different for the battery liquid cooling plates with different size parameters.

[0047] S102, based on the battery type of the power battery and the battery capacity of the power battery, the coating type of the thermal insulation layer on the battery liquid cooling plate is determined.

[0048] Exemplarily, different power batteries of different battery types have different high-temperature resistance performance and different high-temperature resistance degrees, and thus the power batteries of different battery types correspond to different coating types of the heat insulation layer, i.e., the oxide ceramic layer. In addition, different power batteries have different battery capacities, resulting in different standards and requirements of the power batteries for thermal runaway. Therefore, the power batteries of different battery capacities need different coating types, and thus the coating types need to be comprehensively considered.

[0049] It should be noted that the higher the battery capacity of the power battery in the embodiments provided in the present application, the greater the heat shock generated when the power battery fails, and thus a heat insulation layer with better heat insulation capacity is needed. Conversely, the lower the battery capacity of the power battery, the smaller the heat shock generated when the power battery fails, and thus the selection of the heat insulation layer type can be more diversified, and it is not necessary to be obsessed with the high-temperature resistance.

[0050] In the embodiments provided in the present application, the heat insulation layer, i.e., the oxide coating layer, can include but is not limited to an alumina ceramic layer with insulation and temperature resistance, an alumina-titanium ceramic layer with insulation and wear resistance, and a zirconia ceramic layer with high-temperature insulation performance, etc.

[0051] S103, determining the coating thickness of the heat insulation layer on the battery liquid cooling plate based on the coating type and the corresponding electrical parameter of the power battery.

[0052] Exemplarily, after the coating type of the heat insulation layer, i.e., the oxide coating layer, in the embodiments provided in the present application is determined, the coating thickness of each heat insulation layer on the battery liquid cooling plate needs to be determined according to the corresponding electrical parameter of the power battery.

[0053] It can be understood that the electrical parameter in the embodiments provided in the present application includes voltage. After the corresponding coating type of the power battery is determined, the maximum voltage difference that can be borne by the coating and the corresponding voltage of the power battery itself are determined to determine the corresponding coating thickness of each heat insulation layer on the liquid cooling plate of the power battery.

[0054] In the embodiments provided in the present application, the thickness of the oxide ceramic coating layer is controllable, which can be from several microns to tens of microns, and the oxide ceramic coating layer can bear extremely high voltage. A ceramic coating layer with a thickness of 10 microns can bear a high voltage of about 700 V. Therefore, the oxide ceramic coating layer avoids the problem of insulation failure caused by high-voltage breakdown of the battery cell.

[0055] S104, determining the target type corresponding to the battery liquid cooling plate based on the size parameter of the battery liquid cooling plate, the coating type of the heat insulation layer, and the coating thickness of the heat insulation layer.

[0056] In the above, based on the determined size parameter of the battery liquid cooling plate, the coating type of the thermal insulation layer on the battery liquid cooling plate, and the coating thickness of the thermal insulation layer on the battery liquid cooling plate, the actual use type of the battery liquid cooling plate is selected to determine the final target type.

[0057] For example, the first geometric parameter includes a space volume parameter, and the second geometric parameter includes a cell size. The step S101 includes the following sub-step:

[0058] In the sub-step 1011, based on the space volume parameter of the battery pack, the initial size parameter of the battery liquid cooling plate matched with the battery pack is determined.

[0059] For example, in the power battery, there are various space volume proportions of the battery pack. The embodiments provided in the present application need to determine the initial size parameter of the battery liquid cooling plate to be used according to the actual space volume parameter of the battery pack in the power battery, and compare the initial size parameter with the cell size of the cell in the battery pack to determine the specific size parameter of the battery liquid cooling plate.

[0060] In the sub-step 1012, if the size deviation between the initial size parameter of the battery liquid cooling plate and the cell size of the cell in the battery pack does not exceed the preset deviation threshold, the size parameter of the battery liquid cooling plate matched with the battery pack is determined as a first size.

[0061] For example, the preset deviation threshold in the embodiments provided in the present application can be customized and used according to different application scenarios. Assuming that the preset deviation threshold in the embodiments provided in the present application can be specifically set to 30 mm, therefore, if the size deviation between the initial size parameter of the battery liquid cooling plate and the cell size of the cell in the battery pack does not exceed 30 mm, the size parameter of the battery liquid cooling plate matched with the battery pack is determined as a first size, that is, the size deviation between the length of the battery liquid cooling plate and the cell size of the cell in the battery pack does not exceed 30 mm.

[0062] In the sub-step 1013, if the size deviation between the initial size parameter of the battery liquid cooling plate and the cell size of the cell in the battery pack exceeds the preset deviation threshold, the size parameter of the battery liquid cooling plate matched with the battery pack is determined as a second size.

[0063] For example, if the size deviation between the initial size parameter of the battery liquid cooling plate and the cell size of the cell in the battery pack exceeds 30 mm, the size parameter of the battery liquid cooling plate matched with the battery pack is determined as a second size, that is, the size deviation between the length of the battery liquid cooling plate and the cell size of the cell in the battery pack does not exceed 30 mm.

[0064] Exemplarily, the coating types include an alumina ceramic layer, an alumina titanium ceramic layer, and a zirconia ceramic layer, and the step S102 includes the following sub-steps:

[0065] In the sub-step 1021, if the battery type of the power battery is a high-temperature-resistant battery, the coating type of the thermal insulation layer on the battery liquid cooling plate is determined to be the alumina ceramic layer and the alumina titanium ceramic layer based on the battery capacity of the high-temperature-resistant battery.

[0066] It should be noted that the battery types of the power batteries commonly seen in the market include but are not limited to lithium iron phosphate batteries and ternary lithium batteries, wherein the lithium iron phosphate batteries do not need to consider the high-temperature-resistant characteristic, and the ternary lithium batteries need to consider the high-temperature-resistant characteristic. Therefore, in the embodiments provided in the present application, the high-temperature-resistant battery is the ternary lithium battery. After determining that the battery type of the power battery is the high-temperature-resistant ternary lithium battery, the degree of requirement of the ternary lithium battery on thermal runaway is determined according to the battery capacity of the ternary lithium battery in actual application, and then the coating type of the thermal insulation layer is determined to be the alumina ceramic layer and the alumina titanium ceramic layer.

[0067] In the sub-step 1022, if the battery type of the power battery is a non-high-temperature-resistant battery, the coating type of the thermal insulation layer on the battery liquid cooling plate is determined to be the zirconia ceramic layer, the alumina ceramic layer, and the alumina titanium ceramic layer based on the battery capacity of the high-temperature-resistant battery.

[0068] It should be noted that after determining that the battery type of the power battery is the non-high-temperature-resistant lithium iron phosphate battery, the degree of requirement of the lithium iron phosphate battery on thermal runaway is determined according to the battery capacity of the lithium iron phosphate battery in actual application, and then the coating type of the thermal insulation layer is determined to be the alumina ceramic layer and the alumina titanium ceramic layer.

[0069] It should be noted that the preparation of the oxide ceramic coating on the surface of the battery liquid cooling plate in the embodiments provided in the present application mainly includes the following process steps:

[0070] Step 1: The surface of the sample plate of the battery liquid cooling plate needs to be pretreated. The surface of the workpiece is made suitable for coating deposition and the bonding area is increased by chamfering and pre-coating groove.

[0071] Step 2: Then, the oil stains on the surface of the workpiece are removed by methods such as solvent cleaning and alkali cleaning to maintain cleanliness. Here, the commonly used cleaning solvents on the market are gasoline, dimethyl ketone, tetrachloromethane, and trichloroethylene.

[0072] Step 3: The surface of the substrate can be roughened by the sand blasting process to remove the oxide film on the surface of the substrate and cause lattice distortion of part of the surface metal, which is beneficial to the physical bonding of the coating.

[0073] Step 4, high-temperature heat source is used to melt the oxide ceramic powder, and the temperature varies with the melting temperature of the oxide ceramic powder used.

[0074] Step 5, the melted ceramic powder is atomized by the impact of high-speed airflow and sprayed at a certain speed onto the surface of the treated liquid cooling plate sample to form a coating with corrosion resistance, wear resistance, high temperature resistance, and insulation properties.

[0075] For example, the electrical parameter includes voltage, and step S103 includes the following substep:

[0076] Substep 1031, based on each coating type and the preset coating thickness-voltage difference data table, determine the corresponding coating voltage difference of each coating type at different coating thicknesses, wherein the coating voltage difference is used to characterize the voltage difference intensity resisted by different coatings.

[0077] For example, in the embodiments provided in the present application, the corresponding coating voltage difference of different oxide coatings at different coating thicknesses needs to be determined according to the preset coating thickness-voltage difference data table.

[0078] Substep 1032, based on each coating voltage difference and the corresponding battery pack voltage of the power battery, determine the coating thickness of the oxide ceramic layer on the battery liquid cooling plate.

[0079] For example, after determining the corresponding coating voltage difference of different oxide coatings at different coating thicknesses, the coating thickness of the oxide ceramic layer on the battery liquid cooling plate needs to be determined based on the voltage of the battery pack corresponding to the power battery in the actual application scenario.

[0080] Compared with the prior art, the determination method of the battery liquid cooling plate in the embodiments provided in the present application determines the size parameters of the battery liquid cooling plate matched with the battery pack based on the first geometric parameters of the battery pack and the second geometric parameters of the battery cells in the battery pack under the battery pack, determines the coating type of the heat insulation layer on the battery liquid cooling plate based on the battery type of the power battery and the battery capacity of the power battery, then determines the coating thickness of the heat insulation layer on the battery liquid cooling plate based on the coating type and the electrical parameter corresponding to the power battery, and finally determines the target type of the battery liquid cooling plate based on the size parameters of the battery liquid cooling plate, the coating type of the heat insulation layer, and the coating thickness of the heat insulation layer. By determining the battery liquid cooling plate of the target type, and then electrically connecting the above battery liquid cooling plate with the plurality of battery cells in the battery pack, the plurality of battery cells in each battery pack are simultaneously connected with the battery liquid cooling plate, the heat insulation between the battery cells is improved, and the possibility of heat spreading between different battery cells in the same module or different battery cells in different modules is reduced.

[0081] Please refer to Figure 2 , Figure 2This is a schematic diagram of the structure of a battery module provided in an embodiment of this application, as shown below. Figure 2 As shown, the battery module 200 includes a battery liquid cooling plate 210 and a battery pack 220. The battery pack 220 includes multiple battery groups, each battery group including multiple battery cells 230. The battery liquid cooling plate 210 is fixedly installed inside the battery pack 220 of the preset power battery, and the battery liquid cooling plate 210 is electrically connected to the multiple battery cells 230.

[0082] Here, whether the two cells 230 in the battery module 200 experience thermal runaway and then conduct through the battery liquid cooling plate 210, or the two cells 230 between the battery modules 200 experience thermal runaway and then conduct through the liquid cooling plate, the battery liquid cooling plate 210 needs to be installed inside the battery pack 220 of the preset power battery, and an insulating oxide ceramic coating needs to be sprayed on the surface of the battery liquid cooling plate 210 so that the short circuit path of the cells 230 in the battery module 200 will be blocked, in order to prevent the thermal diffusion of the cells 230 between the battery modules 200.

[0083] For example, please refer to Figure 3 , Figure 3 This is one of the structural schematic diagrams of the battery liquid cooling plate 210 in a battery module 200 provided in the embodiments of this application, as shown below. Figure 3 As shown, the top and side surfaces of the battery liquid cooling plate 210 in the battery module 200 are coated with an oxide ceramic layer 301, and the length of the battery liquid cooling plate 210 is equal to the length of the multiple battery cells 230, and a first flow channel 302 is opened inside the battery liquid cooling plate 210.

[0084] For example, please refer to Figure 4 , Figure 4 This is a second schematic diagram of the structure of the battery liquid cooling plate 210 in a battery module 200 provided in this application embodiment, as shown below. Figure 4 As shown, the top of the battery liquid cooling plate 210 in the battery module 200 is coated with an oxide ceramic layer 301, and the length of the battery liquid cooling plate 210 is greater than the length of the multiple battery cells 230, and a second flow channel 401 is opened inside the battery liquid cooling plate 210.

[0085] In the embodiments provided in this application, the length of the battery liquid cooling plate 210 is greater than or equal to the length of the multiple battery cells 230 by 30 mm.

[0086] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application, such as... Figure 5 As shown, vehicle 10 includes a battery module 200 as described above.

[0087] Please see Figure 6 ,Figure 6 A structural schematic diagram of an electronic device provided by an embodiment of the present application is shown in FIG. 6. Figure 6 As shown, the electronic device 600 includes a processor 610, a memory 620, and a bus 630.

[0088] The memory 620 stores machine readable instructions executable by the processor 610. When the electronic device 600 is running, the processor 610 and the memory 620 communicate through the bus 630. When the machine readable instructions are executed by the processor 610, the steps of the method for determining a battery liquid cooling plate in the method embodiment shown above can be performed. For details, refer to the method embodiment, which will not be described here. Figure 1 As shown, the electronic device 600 includes a processor 610, a memory 620, and a bus 630.

[0088] The memory 620 stores machine readable instructions executable by the processor 610. When the electronic device 600 is running, the processor 610 and the memory 620 communicate through the bus 630. When the machine readable instructions are executed by the processor 610, the steps of the method for determining a battery liquid cooling plate in the method embodiment shown above can be performed. For details, refer to the method embodiment, which will not be described here.

[0089] The present application also provides a computer readable storage medium, which stores a computer program. When the computer program is run by a processor, the steps of the method for determining a battery liquid cooling plate in the method embodiment shown above can be performed. For details, refer to the method embodiment, which will not be described here. Figure 1 The present application also provides a computer readable storage medium, which stores a computer program. When the computer program is run by a processor, the steps of the method for determining a battery liquid cooling plate in the method embodiment shown above can be performed. For details, refer to the method embodiment, which will not be described here.

[0090] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device, and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0091] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0092] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device, and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0093] The present application is described with reference to flowcharts and / or block diagrams according to the method, device (system), and computer program product of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks, can be implemented by computer program instructions. These computer program instructions can be provided to a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing devices to produce a machine, so that the instructions executed by the computer or other programmable data processing devices produce a device for implementing the functions described in the flowcharts and / or block diagrams.Figure 1 one or more processes and / or blocks Figure 1 an apparatus for performing the functions specified in the flowchart

[0094] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flowchart Figure 1 one or more processes and / or blocks Figure 1 an apparatus for performing the functions specified in the flowchart

[0095] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart Figure 1 one or more processes and / or blocks Figure 1 an apparatus for performing the functions specified in the flowchart

[0096] The embodiments of the present application also provide a computer program product, which includes computer software instructions, when the computer software instructions are run on a processing device, cause the processing device to execute the flowchart of the determination method of the battery liquid cooling plate.

[0097] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flowchart or function according to the embodiments of the present application is produced. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that the computer can store or be integrated into a data storage device such as a server, data center, etc. containing one or more available media sets. The available media can be magnetic media (for example, floppy disk, hard disk, magnetic tape), optical media (for example, DVD), or semiconductor media (for example, solid state disk (solid state disk, SSD)) and the like.

[0098] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0099] In several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other manners. For example, the described apparatus embodiments are merely schematic. The division of units is merely a logical function division. There can be another division manner for actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0100] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0101] In addition, each functional unit in the embodiments of the present application can be integrated in a processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware, or in the form of software functional units.

[0102] If the integrated unit is implemented in the form of software functional units and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the present application essentially or the part that makes a contribution to the prior art, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in the embodiments of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and various media that can store program codes.

[0103] The above examples are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0104] Although the preferred embodiments of the present specification have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present specification.

[0105] Obviously, those skilled in the art can make various modifications and variations to the present specification without departing from the spirit and scope of the present specification. Thus, if these modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalents, the present specification also intends to include these modifications and variations.

Claims

1. A method of determining a battery liquid cold plate, characterized by, The battery liquid cooling plate is fixedly installed in the battery pack of the preset power battery, and an outer surface of the battery liquid cooling plate is sprayed with a heat insulation layer. The battery pack includes a plurality of battery groups, each of which includes a plurality of battery cells, and the battery liquid cooling plate is electrically connected with the plurality of battery cells. A determination method of the battery liquid cooling plate includes: determining a size parameter of the battery liquid cooling plate matched with the battery pack based on a first geometric parameter of the battery pack and a second geometric parameter of the battery cells in the battery groups under the battery pack; the first geometric parameter includes a space volume parameter, and the second geometric parameter includes a battery cell size; determining a coating type of the heat insulation layer on the battery liquid cooling plate based on a battery type of the power battery and a battery capacity of the power battery; wherein, if the battery type of the power battery is a high-temperature-resistant battery, determining the coating type of the heat insulation layer on the battery liquid cooling plate as an alumina ceramic layer and an alumina-titanium ceramic layer based on the battery capacity of the high-temperature-resistant battery; determining a coating thickness of the heat insulation layer on the battery liquid cooling plate based on the coating type and an electrical parameter corresponding to the power battery; the electrical parameter includes a voltage, and the determination of the coating thickness of the heat insulation layer on the battery liquid cooling plate based on the coating type and the electrical parameter corresponding to the power battery includes: determining a coating voltage difference corresponding to each coating type at different coating thicknesses based on each coating type and a preset coating thickness-voltage difference data table, wherein the coating voltage difference is used to represent the voltage difference intensity resisted by different coatings; determining the coating thickness of the oxide ceramic layer on the battery liquid cooling plate based on each coating voltage difference and a battery group voltage corresponding to the power battery; determining a target type corresponding to the battery liquid cooling plate based on the size parameter of the battery liquid cooling plate, the coating type of the heat insulation layer, and the coating thickness of the heat insulation layer.

2. The method of determining a battery liquid cold plate according to claim 1, wherein, The determination of the size parameter of the battery liquid cooling plate matched with the battery pack based on the first geometric parameter of the battery pack and the second geometric parameter of the battery cells in the battery groups under the battery pack includes: determining an initial size parameter of the battery liquid cooling plate matched with the battery pack based on a space volume parameter of the battery pack; if a size deviation between the initial size parameter of the battery liquid cooling plate and the battery cell size of the battery cells in the battery groups under the battery pack does not exceed a preset deviation threshold, determining the size parameter of the battery liquid cooling plate matched with the battery pack as a first size; if the size deviation between the initial size parameter of the battery liquid cooling plate and the battery cell size of the battery cells in the battery groups under the battery pack exceeds the preset deviation threshold, determining the size parameter of the battery liquid cooling plate matched with the battery pack as a second size.

3. The method of determining a battery liquid cold plate according to claim 1, wherein, The determination of the coating type of the heat insulation layer on the battery liquid cooling plate based on the battery type of the power battery and the battery capacity of the power battery further includes: if the battery type of the power battery is a non-high-temperature-resistant battery, determining the coating type of the heat insulation layer on the battery liquid cooling plate as a zirconium oxide ceramic layer, an alumina ceramic layer, and an alumina-titanium ceramic layer based on the battery capacity of the non-high-temperature-resistant battery.

4. A battery module, characterized by The battery liquid cooling plate determined by the method as claimed in any one of claims 1-3.

5. The battery module of claim 4, wherein, The top and side surfaces of the battery liquid cooling plate in the battery module are sprayed with an oxidation ceramic layer, and the length of the battery liquid cooling plate is equal to the length of the battery cells.

6. The battery module of claim 4, wherein, The top of the battery liquid cooling plate in the battery module is sprayed with an oxidation ceramic layer, and the length of the battery liquid cooling plate is greater than the length of the battery cells.

7. A vehicle characterized by comprising: The battery module as claimed in any one of claims 4-6.

8. An electronic device, comprising: The battery module as claimed in claim 7. A processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, the machine readable instructions are executed by the processor to perform the steps of the determination method of the battery liquid cooling plate as claimed in any one of claims 1-3.

9. A computer readable storage medium characterized by, The computer readable storage medium stores a computer program, the computer program is executed by the processor to perform the steps of the determination method of the battery liquid cooling plate as claimed in any one of claims 1-3.

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