Battery thermal model modeling method, system, medium and electronic device

Abstract

The application provides a battery thermal model modeling method, system, medium and electronic equipment, basic parameters and working condition parameters of a battery are acquired, a three-dimensional initial battery grid model is generated according to the basic parameters of the battery, the unit volume heat generation of the battery is acquired according to the working condition parameters of the battery, the unit volume heat generation of the battery refers to the unit volume heat generation of the positive and negative electrodes, the separator and the current collector of the battery, the temperature of one or more grids in the initial battery grid model is acquired according to the unit volume heat generation of the battery, the temperature of the one or more grids is added to the initial battery grid model, and a target battery grid model is obtained. Wherein, the application improves the accuracy of the battery model, and can be applied to battery thermal management.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery thermal model, in particular to a battery thermal model modeling method, system, medium and electronic equipment. BACKGROUND

[0002] At present, batteries are widely used in the field of consumer electronics and the electric vehicle industry. For example, lithium ion batteries, nickel-hydrogen batteries, lead-acid batteries, etc. can be used as power sources for new energy vehicles. With the continuous growth of the number of batteries, users have higher requirements for the charging speed and safety of the batteries. However, the battery may have safety problems when fast charging, especially when charging at a large rate, due to uneven distribution of current density in the battery pole piece, which may cause local hot spots, and in severe cases, the separator may melt, causing internal short circuit, increasing internal heat production, causing the battery temperature to rise, further triggering the chain heat production side reaction inside the battery, and eventually leading to battery thermal runaway. Therefore, battery thermal management is needed.

[0003] Battery thermal management is based on the influence of temperature on battery performance, combined with the electrochemical characteristics and heat production mechanism of the battery, and based on the optimal charging and discharging temperature range of the specific battery, to solve the problem of heat dissipation or thermal runaway caused by working at too high or too low temperature, and to improve the overall performance of the battery. Among them, battery thermal management is based on the establishment of a battery model. Therefore, it is necessary to provide a battery thermal model modeling method for battery thermal management. SUMMARY

[0004] The battery thermal model modeling method, system, medium and electronic equipment provided by the present application are used for battery thermal management.

[0005] To achieve the above-mentioned purpose and other related purposes, the first aspect of the present application provides a battery thermal model modeling method, which comprises:

[0006] Obtaining the basic parameters and working condition parameters of the battery;

[0007] Generating a three-dimensional initial battery grid model according to the basic parameters of the battery;

[0008] According to the working condition parameters of the battery, obtaining the heat generation per unit volume of the battery, which refers to the heat generation per unit volume of the positive and negative electrodes, the separator and the current collector of the battery;

[0009] According to the heat generation per unit volume of the battery, obtaining the temperature of one or more grids in the initial battery grid model;

[0010] Add the temperature of the one or more grids to the initial battery grid model to obtain a target battery grid model.

[0011] Optionally, the unit volume heat generation of the battery according to the working condition parameters of the battery comprises:

[0012] According to the total heat of the battery, the unit volume heat generation of the battery is obtained.

[0013] According to the total heat of the battery, the unit volume heat generation of the battery is obtained.

[0014] Optionally, for any grid in the initial battery grid model, the temperature of the grid is obtained by using the following formula:

[0015] a P =a W +a E +a S +a N +a B +a T

[0016] Wherein, a P represents the center point temperature of the grid, W, E, S, N, B, T respectively represent six directions of the grid, Γ t , Γ e , Γ s , Γ n , Γ b , Γ t Respectively represent the heat conduction coefficient of the grid in the six directions, A w , A e , A s , A n , A b , A t Respectively represent the contact area of the grid with other grids in the six directions, δ xWP , δ xPE , δ ySP , δ yPN , δ zBP And δ zPT Respectively represent the discrete gradient coefficient.

[0017] Optionally, the working condition parameters of the battery include the working voltage, working current and working environment temperature of the battery.

[0018] Optionally, the basic parameters of the battery include: size, tab position and tab area of the battery, material of the positive and negative electrodes, tab, current collector and separator.

[0019] Optionally, the three-dimensional initial battery grid model is generated according to the basic parameters of the battery, including:

[0020] The three-dimensional grid model of the battery is generated by using Gmsh software according to the basic parameters of the battery.

[0021] The three-dimensional grid model is refined by using Gmsh software to generate the three-dimensional initial battery grid model.

[0022] Optionally, the battery thermal model modeling method further includes:

[0023] The temperature field of the battery is obtained according to the temperature of one or more grids in the initial battery grid model.

[0024] According to the temperature field of the battery, the health status, the remaining capacity and / or the internal short circuit state of the battery are obtained.

[0025] The health status, the remaining capacity and / or the internal short circuit state of the battery are added to the initial battery grid model to obtain a target battery grid model.

[0026] The second aspect of the present application provides a battery thermal model modeling system, including:

[0027] The parameter acquisition module is configured to acquire the basic parameters and the working condition parameters of the battery.

[0028] The first grid model construction module is configured to generate a three-dimensional initial battery grid model according to the basic parameters of the battery.

[0029] The heat acquisition module is configured to obtain the unit volume heat generation of the battery according to the working condition parameters of the battery, wherein the unit volume heat generation of the battery refers to the unit volume heat generation of the positive and negative electrodes, the separator and the current collector of the battery.

[0030] The temperature acquisition module is configured to obtain the temperature of one or more grids in the initial battery grid model according to the unit volume heat generation of the battery.

[0031] The second grid model construction module is configured to add the temperature of the one or more grids to the initial battery grid model to obtain a target battery grid model.

[0032] The third aspect of the present application provides a computer readable storage medium, and the computer program is executed by a processor to realize the heat exchange coefficient acquisition method of any one of the first aspect of the present application.

[0033] The fourth aspect of the present application provides an electronic device, comprising a memory storing a computer program; a processor connected in communication with the memory, and executing the heat transfer coefficient acquisition method according to any one of the first aspect of the present application when the computer program is invoked.

[0034] As described above, the battery thermal model modeling method, system, medium and electronic device provided by the present application have the following beneficial effects:

[0035] In the battery thermal model modeling method, system, medium and electronic device provided by the present application, the basic parameters and working condition parameters of the battery are obtained, a three-dimensional initial battery grid model is generated according to the basic parameters of the battery, the unit volume heat generation of the battery is obtained according to the working condition parameters of the battery, the unit volume heat generation of the battery refers to the unit volume heat generation of the positive and negative electrodes, the separator and the current collector of the battery, the temperature of one or more grids in the initial battery grid model is obtained according to the unit volume heat generation of the battery, and the temperature of the one or more grids is added to the initial battery grid model to obtain a target battery grid model. Thus, the present application provides a new battery thermal model modeling method, which can be applied to battery thermal management. In addition, the present application can consider the heat generation difference of different materials of the battery and the heat generation model of the current collector in the battery modeling process, and can consider the non-uniformity of the heat generation and the non-uniformity of the heat conduction coefficient in the battery, so that the battery thermal model obtained by the present application is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 A flow chart of the battery thermal model modeling method according to the embodiment of the present application is shown;

[0037] Figure 2 A detailed flow chart of step S13 in the battery thermal model modeling method according to the embodiment of the present application is shown;

[0038] Figure 3 A detailed flow chart of step S12 in the battery thermal model modeling method according to the embodiment of the present application is shown;

[0039] Figure 4 A flow chart of the key steps in the battery thermal model modeling method according to the embodiment of the present application is shown;

[0040] Figure 5 A structure diagram of the battery thermal model modeling system according to the embodiment of the present application is shown;

[0041] Figure 6 A structure diagram of the electronic device according to the embodiment of the present application is shown. DETAILED DESCRIPTION

[0042] Following, the embodiments of the present application are described through specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure. The present application can also be implemented or applied through other different embodiments, and various modifications or changes can be made to the details in the specification based on different views and applications without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0043] It should be noted that the diagrams provided in the following examples only schematically illustrate the basic concepts of the present application, and only the components related to the present application are shown in the diagrams, not the number, shape and size of the components when actually implemented. The shapes, numbers and proportions of the components when actually implemented can be arbitrarily changed, and the layout of the components can be more complex.

[0044] In an embodiment of the present application, the battery thermal model modeling method can include:

[0045] S11, obtaining basic parameters and working condition parameters of the battery.

[0046] In an embodiment of the present application, the basic parameters of the battery refer to parameters related to the heat generation condition of the battery, and the working condition parameters of the battery refer to parameters for reflecting the working condition of the battery.

[0047] S12, generating a three-dimensional initial battery grid model according to the basic parameters of the battery.

[0048] In an embodiment of the present application, the battery grid model can include a plurality of grids, and the specific number of grids can be set according to actual needs. The more the number of grids of the battery grid model, the higher the accuracy of the battery model obtained finally.

[0049] S13, obtaining the unit volume heat generation of the battery according to the working condition parameters of the battery.

[0050] In an embodiment of the present application, the unit volume heat generation of the battery refers to the unit volume heat generation of the positive and negative electrodes, the separator and the current collector of the battery.

[0051] S14, obtaining the temperature of one or more grids in the initial battery grid model according to the unit volume heat generation of the battery.

[0052] In an embodiment of the present application, for any grid in the initial battery grid model, the temperature of the grid is obtained by using the following formula:

[0053] a P = a W + a E + aS +a N +a B +a T , formula (1);

[0054] wherein, W, E, S, N, B, T respectively represent six directions of the grid, for example, left side, right side, front, back, up and down of the grid, Γ w , Γ e , Γ s , Γ n , Γ b , Γ t respectively represent the heat conduction coefficient of the grid in the six directions, A w , A e , A s , A n , A b , A t respectively represent the contact area of the grid in the six directions with other grids, δ xWP , δ xPE , δ ySP , δ yPN , δ zBP and δ zPT respectively represent the distance from the center P to the six faces of the grid. For example, δ xWP represents the distance from the center P to the contact face of the grid in the W direction with other grids, δ xPE represents the distance from the center P to the contact face of the grid in the E direction with other grids, and so on.

[0055] In one embodiment of the present application, the method for obtaining the temperature of any one or more grids in the battery grid model according to the heat generation per unit volume of the battery by using the heat conduction equation can comprise:

[0056] Specifically, for the battery, the heat conduction equation is as shown in the following formula (2).

[0057]

[0058] wherein Γ represents the heat conduction coefficient of the corresponding direction, S φ represents the internal heat source, that is, the heat generation per unit volume of the battery, which can be obtained by step S14, x, y and z respectively represent three directions, and φ represents the temperature.

[0059] Specifically, the process of divergence discretization of the heat conduction equation is as shown in the following formula (3):

[0060]

[0061] Wherein, A represents the contact area between the corresponding grids, CV represents the volume of the corresponding grid, i, j and k represent the unit vectors in x, y and z directions respectively, e, w, t, b, n and s represent the same direction and opposite direction in the three directions of i, j and k, represents the heat generation per unit volume, represents the micro area of the control volume, and n represents the unit vector perpendicular to the micro area in the control volume.

[0062] Taking the b and t directions as examples, the gradient discretization process is shown in the following formula (4) and (5):

[0063]

[0064]

[0065] It should be noted that similar to formula (4) or formula (5), the gradient discretization can be realized in the e, w, n and s directions.

[0066] Based on the above gradient discretization and divergence discretization process, the following formula (6) can be derived:

[0067] a P φ P =a E φ E +a W φ W +a N φ N +a S φ S +a T φ T +a B φ B +S φ , formula (6),

[0068] Wherein, a P =a W +a E +a S +a N +a B +a T , φ E , φ W , φ N , φ S , φ T , φ B respectively represent the surface temperature of the grid in the e, w, n, s, t and b directions.

[0069] In one embodiment of the present application, when the temperatures of the grids are obtained in a sufficient amount, the temperatures of the grids can well reflect the temperature conditions inside the battery, and thus can be used as a battery model in battery thermal management. Therefore, the temperature of each grid in the battery grid model can be obtained.

[0070] S15, adding the temperature of one or more grids to the initial battery grid model to obtain a target battery grid model.

[0071] In one embodiment of the present application, after adding the temperature of one or more grids to the initial battery grid model to obtain a target battery grid model, the target grid model can display the temperature of any one or more grids in the battery grid model in a visual manner.

[0072] According to the above description, the battery thermal modeling method provided by the embodiment includes: obtaining basic parameters and working condition parameters of a battery, generating a three-dimensional initial battery grid model according to the basic parameters of the battery, obtaining a unit volume heat generation of the battery according to the working condition parameters of the battery, the unit volume heat generation of the battery refers to the unit volume heat generation of the positive and negative electrodes, the separator and the current collector of the battery, obtaining the temperature of one or more grids in the initial battery grid model according to the unit volume heat generation of the battery, and adding the temperature of one or more grids to the initial battery grid model to obtain a target battery grid model. Thus, the present application provides a new battery thermal modeling method, which can be applied to battery thermal management. In addition, the present application can consider the heat generation difference of different materials of the battery and the heat generation model of the current collector, as well as the non-uniformity of the heat generation inside the battery and the non-uniformity of the heat conduction coefficient, so that the battery thermal model obtained by the present application is more accurate.

[0073] Referring to Figure 2 In one embodiment of the present application, the method of obtaining the unit volume heat generation of the battery according to the working condition parameters of the battery can include the following steps:

[0074] S131, obtaining the total heat of the battery according to the working condition parameters of the battery.

[0075] In one embodiment of the present application, the total heat of the battery can include the ohmic heat generated by the separator and the current collector of the battery, and the ohmic heat, polarization heat and reaction heat generated by the positive and negative electrodes of the battery.

[0076] In one embodiment of the present application, the working condition parameters of the battery can include the working voltage, working current and working environment temperature of the battery.

[0077] Specifically, in one embodiment of the present application, the following formulas (7) to (10) can be used to obtain the polarization heat Q of the positive and negative electrodes of the battery, taking the positive and negative electrodes of the battery as examples act , the reaction heat Q rea , the ohmic heat Q ohm , and the total heat Q.

[0078] Q act = a s × F × j n × (φ s - φ e - F × j n × R SEI ) = a s × F × j n × η, formula (7);

[0079]

[0080]

[0081]

[0082] wherein a s represents the effective reaction area of the material, F represents the Faraday constant, j n represents the molar flux of lithium ions, η represents the overpotential, φ s represents the solid-phase potential, φ e represents the liquid-phase potential, R SEI represents the SEI (Solid Electrolyte Interphase) film resistance, R represents the universal gas constant, T represents the current temperature, represents the material entropy change coefficient, represents the solid-phase effective conductivity of the material, represents the liquid-phase effective conductivity of the material, t + represents the number of lithium ion migrations, c e represents the liquid-phase concentration, x represents the position, L n represents the negative electrode thickness, L sep represents the separator thickness, and L p represents the positive electrode thickness.

[0083] In one embodiment of the present application, if the total heat Q calculated according to the above formula (10) is positive, it indicates that the battery releases heat, and vice versa.

[0084] Further, in one embodiment of the present application, the temperature change per unit volume can also be obtained according to the specific heat capacity, the mass, and the total heat Q.

[0085] It should be noted that the ohmic heat generated by the separator and the current collector of the battery can be obtained in the same way as formula (9), which will not be described in detail here.

[0086] S132, according to the total heat of the battery, obtaining the heat generation per unit volume of the battery.

[0087] In an embodiment of the present application, the heat generation per unit volume of the battery can be obtained according to the total heat of the battery and the volume of the separator and the current collector and the positive and negative electrodes.

[0088] Referring to Figure 3 In an embodiment of the present application, the method for generating a three-dimensional initial battery grid model according to the basic parameters of the battery can include the following steps:

[0089] S121, generating a three-dimensional grid model of the battery according to the basic parameters of the battery using Gmsh software.

[0090] In an embodiment of the present application, a three-dimensional grid model of the battery can be generated according to the actual size of the positive and negative electrodes, the separator and the current collector using Gmsh software, and the three-dimensional grid model is a coarsely divided grid model.

[0091] S122, refining the three-dimensional grid model using Gmsh software to generate a three-dimensional initial battery grid model.

[0092] Referring to Figure 4 In an embodiment of the present application, the battery thermal model modeling method can include the following steps:

[0093] S41, obtaining the temperature field of the battery according to the temperature of one or more grids in the initial battery grid model.

[0094] S42, obtaining the state of health, the remaining capacity and / or the internal short circuit state of the battery according to the temperature field of the battery;

[0095] In an embodiment of the present application, the state of health of the battery can be represented by SOH (State Of Health), and the remaining capacity of the battery can be represented by SOC (State Of Charge).

[0096] S43, adding the state of health, the remaining capacity and / or the internal short circuit state of the battery to the initial battery grid model to obtain a target battery grid model.

[0097] In an embodiment of the present application, a battery thermal model modeling system 500 is provided, and specifically, referring to Figure 5 The battery thermal model modeling system 500 includes:

[0098] The parameter acquisition module 510 is configured to acquire the basic parameters and the working condition parameters of the battery.

[0099] The first grid model construction module 520 is configured to generate a three-dimensional initial battery grid model according to the basic parameters of the battery.

[0100] The heat acquisition module 530 is configured to acquire the unit volume heat generation of the battery according to the working condition parameters of the battery, where the unit volume heat generation of the battery refers to the unit volume heat generation of the positive and negative electrodes, the separator, and the current collector of the battery.

[0101] The temperature acquisition module 540 is configured to acquire the temperature of one or more grids in the initial battery grid model according to the unit volume heat generation of the battery.

[0102] The second grid model construction module 550 is configured to add the temperature of the one or more grids to the initial battery grid model to obtain a target battery grid model.

[0103] According to the above description, the battery thermal model modeling system provided in this embodiment includes: acquiring the basic parameters and the working condition parameters of the battery, generating a three-dimensional initial battery grid model according to the basic parameters of the battery, acquiring the unit volume heat generation of the battery according to the working condition parameters of the battery, where the unit volume heat generation of the battery refers to the unit volume heat generation of the positive and negative electrodes, the separator, and the current collector of the battery, acquiring the temperature of one or more grids in the initial battery grid model according to the unit volume heat generation of the battery, and adding the temperature of the one or more grids to the initial battery grid model to obtain a target battery grid model. Thus, the battery thermal model modeling method provided in this application can be applied to battery thermal management. In addition, the battery modeling process in this application can consider the heat generation differences of different materials of the battery and can consider the heat generation model of the current collector and the non-uniformity of the internal heat generation and the non-uniformity of the heat conduction coefficient of the battery, so that the battery thermal model obtained by this application is more accurate.

[0104] Based on the above description of the battery thermal model modeling system, the application further provides a computer readable storage medium having a computer program stored thereon. The computer program is executed by a processor to implement the battery thermal model modeling method shown in the above description. Figure 1

[0105] The application further provides an electronic device. Figure 6 The structure schematic diagram of the electronic device 600 in an embodiment of the application is shown. As shown in the figure, the electronic device 600 in this embodiment includes a memory 610 and a processor 620. Figure 6

[0106] ​​The memory 610 is configured to store computer programs; preferably, the memory 610 includes ROM, RAM, a disk, a U disk, a memory card, an optical disk, and various media capable of storing program codes.

[0107] The processor 620 is connected with the memory 610, and is configured to execute the computer programs stored in the memory 610, so that the electronic device 600 executes the battery thermal model modeling method shown in the embodiment. Figure 1 The battery thermal model modeling method shown in the embodiment.

[0108] Preferably, the processor 620 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; and can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0109] Preferably, the electronic device 600 in the embodiment can further include a display 630. The display 630 is connected in communication with the memory 610 and the processor 620, and is configured to display a related GUI interface of the battery thermal model modeling method.

[0110] The protection scope of the battery thermal model modeling method of the present application is not limited to the execution order of the steps listed in the embodiment, and any scheme achieved by adding, replacing or replacing the steps of the prior art according to the principle of the present application is included in the protection scope of the present application.

[0111] The present application also provides a battery thermal model modeling system, which can implement the battery thermal model modeling method of the present application, but the implementation device of the battery thermal model modeling method of the present application includes but is not limited to the structure of the battery thermal model modeling system listed in the embodiment, and any structure deformation and replacement of the prior art according to the principle of the present application is included in the protection scope of the present application.

[0112] In summary, the battery thermal model modeling method, system, medium and electronic device of the present application are used to improve the accuracy of battery thermal model modeling. Therefore, the present application effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0113] The above embodiments are only illustrative of the principles of the present application and its effects, and are not intended to limit the present application. Any modification or change made by any person skilled in the art without departing from the spirit and scope of the present application shall be covered by the claims of the present application.

Claims

1. A battery thermal modeling method, characterized in that, The battery thermal modeling method includes: Obtain the battery's basic parameters and operating condition parameters; A three-dimensional initial battery mesh model is generated based on the basic parameters of the battery. Based on the operating parameters of the battery, the heat generated per unit volume of the battery is obtained. The heat generated per unit volume of the battery refers to the heat generated per unit volume of the positive and negative electrodes, the separator, and the current collector of the battery. Based on the heat generated per unit volume of the battery, the temperature of one or more grids in the initial battery grid model is obtained; The temperature of one or more of the grids is added to the initial battery grid model to obtain the target battery grid model; For any grid in the initial battery grid model, the temperature of the grid is obtained using the following formula: a P =a W +a E +a S +a N +a B +a T , where a P This indicates the temperature at the center point of the grid. W, E, S, N, B, and T represent the six directions of the grid, respectively, Γw, Γ e ,Γ s ,Γ n ,Γ b ,Γ t A represents the thermal conductivity coefficient of the mesh in the six directions, respectively. w A e A s A n A b A t δ represents the contact area of ​​the grid with other grids in the six directions, respectively. xWP δ xPE δ ySP δ yPN δ zBP and δ zPT These represent the distances from the center point of the grid to each of the six faces of the grid.

2. The battery thermal modeling method according to claim 1, characterized in that, The step of obtaining the heat generated per unit volume of the battery based on the battery's operating parameters includes: Based on the operating parameters of the battery, the total heat of the battery is obtained. The total heat of the battery includes the ohmic heat generated by the separator and current collector of the battery, as well as the ohmic heat, polarization heat and reaction heat generated by the positive and negative electrodes of the battery. The heat generated per unit volume of the battery is obtained based on the total heat of the battery.

3. The battery thermal modeling method according to claim 2, characterized in that, The battery's operating parameters include its operating voltage, operating current, and operating ambient temperature.

4. The battery thermal modeling method according to claim 1, characterized in that, The basic parameters of the battery include: the size of the battery, the position and area of ​​the tabs, and the materials of the positive and negative electrodes, tabs, current collectors, and separator.

5. The battery thermal modeling method according to claim 1, characterized in that, The step of generating a three-dimensional initial battery mesh model based on the basic parameters of the battery includes: A three-dimensional mesh model of the battery was generated using Gmsh software based on the battery's basic parameters. The 3D mesh model was refined using Gmsh software to generate the initial 3D battery mesh model.

6. The battery thermal modeling method according to claim 1, characterized in that, The battery thermal modeling method further includes: The temperature field of the battery is obtained based on the temperature of one or more grids in the initial battery grid model; Based on the temperature field of the battery, the health status, remaining charge, and / or internal short circuit status of the battery are obtained; The battery's health status, remaining charge, and / or internal short-circuit status are added to the initial battery mesh model to obtain the target battery mesh model.

7. A battery thermal modeling system, characterized in that, The battery thermal modeling system is used to implement the battery thermal modeling method as described in claim 1, and the system includes: The parameter acquisition module is used to acquire the battery's basic parameters and operating condition parameters; The first mesh model construction module is used to generate a three-dimensional initial battery mesh model based on the basic parameters of the battery. The heat acquisition module is used to acquire the heat generated per unit volume of the battery based on the battery's operating parameters. The heat generated per unit volume of the battery refers to the heat generated per unit volume of the positive and negative electrodes, the separator, and the current collector of the battery. The temperature acquisition module is used to acquire the temperature of one or more grids in the initial battery grid model based on the heat generated per unit volume of the battery. The second grid model construction module is used to add the temperature of one or more grids to the initial battery grid model to obtain the target battery grid model.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When executed by a processor, the computer program implements the battery thermal modeling method according to any one of claims 1-6.

9. An electronic device, characterized in that, The electronic device includes: A memory that stores a computer program; The processor, which is communicatively connected to the memory, executes the battery thermal modeling method according to any one of claims 1-6 when calling the computer program.

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