Battery integration method and system for use over a wide temperature range

Abstract

The present application relates to the technical field of integration, in particular to a storage battery integration method and system used in a wide temperature range. The present application can more accurately evaluate the heat radiation of each monomer by combining the size and temperature characteristics of the battery, optimize the arrangement spacing of the battery monomer by calculating the heat radiation and charging heat of the battery monomer, ensure that the battery can effectively dissipate heat during charging, avoid performance degradation caused by local overheating, calculate the thermal diffusivity by the thermal conductivity, density and specific heat capacity of each battery monomer, help understand the diffusion speed and distribution of heat in the battery, calculate the first real-time temperature by combining the real-time temperature gradient and charging heat data of each battery monomer and the thermal diffusivity, more accurately evaluate the temperature change of the battery during charging, calculate the temperature compensation coefficient by the limit temperature, temperature gradient and real-time temperature of the battery monomer, and ensure that the battery can maintain high efficiency and safety in a wide temperature range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of integration, in particular to a battery integration method and system for wide temperature range use. BACKGROUND

[0002] Wide temperature range refers to the ability of a device or system to operate stably within a wide range of temperatures without compromising its performance or lifespan. Specifically, a wide temperature range means that the device or system can adapt and function normally under more extreme temperature conditions than conventional devices.

[0003] In a wide temperature range environment, the performance of a battery is greatly affected by temperature, especially during charging and discharging. During the charging process of a battery, heat is generated, especially in battery cells with high internal resistance or large charging current. The design of existing battery packs may not fully consider the heat dissipation of battery cells and the spacing between battery cells, resulting in the inability to dissipate heat in a timely manner, affecting the overall efficiency and safety of the battery system. SUMMARY

[0004] The main purpose of the present application is to provide a battery integration method for wide temperature range use, which aims to solve the technical problems in the prior art.

[0005] The present application provides a battery integration method for wide temperature range use, comprising:

[0006] Obtaining the real-time internal resistance and charging current of each battery cell in the battery, and calculating the total charging heat according to a plurality of real-time internal resistances and charging currents;

[0007] Obtaining the temperature characteristics and size characteristics of each battery cell, wherein the temperature characteristics include the second real-time temperature and the surrounding environment temperature;

[0008] Obtaining the battery heat radiation according to the size characteristics, the second real-time temperature and the surrounding environment temperature, and calculating the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat;

[0009] Obtaining the thermal conductivity, density and specific heat capacity of each battery cell, and obtaining the thermal diffusivity according to the thermal conductivity, density and specific heat capacity;

[0010] Obtaining the real-time temperature gradient and real-time charging heat of each battery cell under the arrangement spacing, and obtaining the first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat;

[0011] Obtaining the limit temperature of each battery cell in the wide temperature range, and obtaining the temperature compensation coefficient according to the limit temperature and the first real-time temperature;

[0012] Compensate each battery monomer according to the temperature compensation coefficient.

[0013] As preferred, the step of obtaining the real-time internal resistance and charging current of each battery monomer in the storage battery and calculating the total charging heat according to the plurality of real-time internal resistances and charging currents comprises:

[0014] Obtain the first resistance of each battery monomer in the storage battery at a preset temperature;

[0015] Obtain the second real-time temperature and temperature change coefficient of each battery monomer in the storage battery, and obtain the corresponding resistance increment according to each preset temperature, second real-time temperature and temperature change coefficient;

[0016] Obtain the corresponding real-time internal resistance according to each resistance increment and first resistance;

[0017] Obtain the charging current of each battery monomer in the storage battery, and obtain the total charging heat according to the plurality of charging currents and real-time internal resistances, wherein the calculation formula is:

[0018]

[0019] Wherein, C(RL) represents the total charging heat, C(DL) k represents the kth charging current, S(DZ) k represents the kth real-time internal resistance, k represents the serial number of the charging current, and n represents the number of charging currents.

[0020] As preferred, the step of obtaining the battery heat radiation according to the size characteristics, second real-time temperature and ambient temperature, and calculating the arrangement distance of the battery monomer according to the battery heat radiation and the total charging heat comprises:

[0021] Obtain the length size, width size and height size of the battery monomer according to the size characteristics, and obtain the battery surface area according to the length size, width size and height size;

[0022] Obtain the emissivity, thermal conductivity, second real-time temperature and ambient temperature of each battery monomer, and the calculation formula for calculating the battery heat radiation according to each emissivity, battery surface area, second real-time temperature and ambient temperature is:

[0023] R(FS)=F(SL)*α*F(MJ)*[S(WD) 4 -H(WD) 4 ];

[0024] Wherein, R(FS) represents the battery heat radiation, F(SL) represents the emissivity, a represents the Stuert-Boltzmann constant, F(MJ) represents the battery surface area, S(WD) represents the second real-time temperature, and H(WD) represents the ambient temperature;

[0025] Obtaining a heat difference according to the total charging heat and the battery heat radiation;

[0026] Obtaining a heat flow according to the thermal conductivity, the battery surface area, the second real-time temperature and the ambient temperature, and obtaining the arrangement interval of the battery monomer according to the heat flow and the heat difference.

[0027] As preferred, the step of obtaining the real-time temperature gradient and the real-time charging heat of each battery monomer at the arrangement interval comprises:

[0028] Obtaining three-dimensional temperature distribution data of the battery monomer at the arrangement interval, and obtaining a first change rate of the battery monomer temperature on the X axis according to the three-dimensional temperature distribution data;

[0029] Obtaining a first curvature of the battery monomer temperature on the X axis according to the first change rate;

[0030] Obtaining a second change rate of the battery monomer temperature on the Y axis according to the three-dimensional temperature distribution data, and obtaining a second curvature of the battery monomer temperature on the Y axis according to the second change rate;

[0031] Obtaining a third change rate of the battery monomer temperature on the Z axis according to the three-dimensional temperature distribution data, and obtaining a third curvature of the battery monomer temperature on the Y axis according to the third change rate;

[0032] Obtaining the real-time temperature gradient according to the third curvature, the second curvature and the first curvature.

[0033] As preferred, the step of obtaining the first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat comprises:

[0034] Obtaining a first temperature of the battery monomer at a plurality of first times, and obtaining a temperature change rate according to a plurality of the first temperatures and the first times;

[0035] Obtaining the density, the specific heat capacity and the real-time charging heat of each battery monomer, and obtaining a heat source term according to the density, the specific heat capacity and the real-time charging heat;

[0036] Obtaining the first real-time temperature according to the temperature change rate, the heat source term and the real-time temperature gradient.

[0037] As preferred, the step of obtaining the temperature compensation coefficient according to the limit temperature and the first real-time temperature comprises:

[0038] obtaining a real-time open circuit voltage of the corresponding battery cell according to the first real-time temperature;

[0039] obtaining a limit open circuit voltage of the corresponding battery cell according to the limit temperature, and obtaining an open circuit voltage difference according to the limit open circuit voltage and the real-time open circuit voltage;

[0040] obtaining a voltage variation coefficient of the battery cell, and obtaining a real-time battery capacity of the corresponding battery cell according to the voltage variation coefficient and the open circuit voltage difference;

[0041] obtaining a limit battery capacity according to the limit temperature, and obtaining a battery capacity difference according to the limit battery capacity and the real-time battery capacity;

[0042] obtaining a temperature difference according to the first real-time temperature and the limit temperature, and obtaining a temperature compensation coefficient according to the temperature difference and the battery capacity difference.

[0043] The application also provides a storage battery integrated system used in a wide temperature range, comprising:

[0044] a first calculation module, configured to obtain a real-time internal resistance and a charging current of each battery cell in the storage battery, and calculate a total charging heat according to a plurality of the real-time internal resistances and the charging currents;

[0045] a first obtaining module, configured to obtain a temperature characteristic and a size characteristic of each battery cell, wherein the temperature characteristic comprises a second real-time temperature and an ambient temperature;

[0046] a second calculation module, configured to obtain a battery heat radiation amount according to the size characteristic, the second real-time temperature and the ambient temperature, and calculate a layout interval of the battery cell according to the battery heat radiation amount and the total charging heat;

[0047] a second obtaining module, configured to obtain a thermal conductivity, a density and a specific heat capacity of each battery cell, and obtain a thermal diffusivity according to the thermal conductivity, the density and the specific heat capacity;

[0048] a third obtaining module, configured to obtain a real-time temperature gradient and a real-time charging heat of each battery cell under the layout interval, and obtain a first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat;

[0049] a fourth obtaining module, configured to obtain a limit temperature of each battery cell in a wide temperature range, and obtain a temperature compensation coefficient according to the limit temperature and the first real-time temperature;

[0050] a compensation module, configured to compensate the temperature of each battery cell according to the temperature compensation coefficient.

[0051] Preferably, the third obtaining module comprises:

[0052] a first obtaining unit, configured to obtain three-dimensional temperature distribution data of the battery monomer at an arrangement interval, and obtain a first change rate of the battery monomer temperature on an X axis according to the three-dimensional temperature distribution data;

[0053] a second obtaining unit, configured to obtain a first curvature of the battery monomer temperature on the X axis according to the first change rate;

[0054] a third obtaining unit, configured to obtain a second change rate of the battery monomer temperature on a Y axis according to the three-dimensional temperature distribution data, and obtain a second curvature of the battery monomer temperature on the Y axis according to the second change rate;

[0055] a fourth obtaining unit, configured to obtain a third change rate of the battery monomer temperature on a Z axis according to the three-dimensional temperature distribution data, and obtain a third curvature of the battery monomer temperature on the Y axis according to the third change rate;

[0056] a fifth obtaining unit, configured to obtain a real-time temperature gradient according to the third curvature, the second curvature and the first curvature.

[0057] The application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the integrated method of the battery used in a wide temperature range when executing the computer program.

[0058] The application further provides a computer readable storage medium, which stores a computer program, and the computer program realizes the steps of the integrated method of the battery used in a wide temperature range when executed by a processor.

[0059] The application has the beneficial effects that: the application can effectively monitor the accumulation of heat in the battery by acquiring the internal resistance, charging current and other data of the battery monomer in real time, calculating the total heat generated during charging, and combining the size and temperature characteristics of the battery to more accurately evaluate the heat radiation of each monomer, prevent local overheating, and optimize the arrangement distance of the battery monomer by calculating the heat radiation and charging heat of the battery monomer, so that the battery can effectively dissipate heat during charging, avoid performance degradation caused by local overheating, and maintain the battery within the ideal temperature range by optimizing temperature management, thereby maintaining high charging efficiency and performance, and the heat diffusion rate can be calculated by the thermal conductivity, density and specific heat capacity of each battery monomer, which can help understand the diffusion speed and distribution of heat in the battery, which can ensure that the heat flows more evenly inside the battery and between the batteries, avoid local heat accumulation, and reduce heat loss, and the first real-time temperature can be calculated by the real-time temperature gradient of each battery monomer and the charging heat data combined with the heat diffusion rate, which can more accurately evaluate the temperature change of the battery during charging, ensure that the temperature is within a reasonable range, thereby avoiding overheating, and the limit temperature of the battery monomer is acquired, and the temperature compensation coefficient is calculated according to the temperature gradient and the real-time temperature, which can dynamically adjust the working state of the battery system, and ensure that the battery maintains high efficiency and safety within a wide temperature range. BRIEF DESCRIPTION OF DRAWINGS

[0060] Figure 1 The method flowchart of an embodiment of the application.

[0061] Figure 2 The device structure schematic diagram of an embodiment of the application.

[0062] Figure 3 The internal structure schematic diagram of a computer device of an embodiment of the application.

[0063] The implementation of the application, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0064] It should be understood that the specific embodiments described herein are only used to explain the application and not to limit the application.

[0065] As shown in the drawings, the application provides a wide temperature range used battery integration method, which comprises: Figures 1-3

[0066] S1, acquiring the real-time internal resistance and charging current of each battery monomer in the battery, and calculating the total charging heat according to a plurality of real-time internal resistances and charging currents;

[0067] S2, acquiring the temperature characteristics and size characteristics of each battery monomer, wherein the temperature characteristics include the second real-time temperature and the surrounding environment temperature;​

[0068] S3, acquiring a battery heat radiation amount according to the size feature, the second real-time temperature and the ambient temperature, and calculating a cell arrangement pitch according to the battery heat radiation amount and the total charging heat;

[0069] S4, acquiring a thermal conductivity, a density and a specific heat capacity of each cell, and acquiring a thermal diffusivity according to the thermal conductivity, the density and the specific heat capacity;

[0070] S5, acquiring a real-time temperature gradient and a real-time charging heat of each cell at the arrangement pitch, and acquiring a first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat;

[0071] S6, acquiring a limit temperature of each cell in a wide temperature range, and acquiring a temperature compensation coefficient according to the limit temperature and the first real-time temperature;

[0072] S7, temperature compensating each cell according to the temperature compensation coefficient.

[0073] As described in steps S1-S2 above, in a wide temperature range environment, the performance of the battery is greatly affected by temperature, especially during charging and discharging, as the charging process of the battery generates heat, especially for battery cells with high internal resistance or large charging current, which generates more heat. The existing design of the battery pack may not fully consider the heat dissipation of the battery cells and the arrangement spacing of the battery, resulting in the inability to dissipate heat in time, affecting the overall efficiency and safety of the battery system. The present application obtains the real-time internal resistance and charging current of each battery cell in the battery, calculates the total charging heat based on multiple real-time internal resistances and charging currents, obtains the size characteristics and second real-time temperature and ambient temperature of each battery cell, obtains the battery heat radiation based on the size characteristics, second real-time temperature and ambient temperature, and calculates the arrangement spacing of the battery cell based on the battery heat radiation and the total charging heat. The battery heat radiation refers to the heat radiation from the battery surface to the outside through electromagnetic waves (mainly infrared). The arrangement spacing refers to the distance between each battery cell in the battery pack. The thermal diffusivity is the ability of the battery to diffuse heat per unit time. By obtaining the internal resistance, charging current and other data of the battery cell in real time, the total heat generated during charging is calculated, which can effectively monitor the accumulation of heat in the battery. Combined with the size and temperature characteristics of the battery, the heat radiation of each cell can be more accurately evaluated to prevent local overheating. By calculating the heat radiation and charging heat of the battery cell, the arrangement spacing of the battery cell is optimized to ensure that the battery can dissipate heat more effectively during charging and avoid performance degradation caused by local overheating. Through reasonable temperature management and optimization of the heat dissipation mechanism, these safety risks can be avoided. After optimizing the arrangement spacing of the battery cell, the temperature unevenness problem caused by heat accumulation can be reduced, thereby improving the overall safety of the battery pack and avoiding the overall performance degradation of the battery pack caused by overheating of the battery cell. By optimizing temperature management, the battery can be kept running within the ideal temperature range, thereby maintaining high charging efficiency and performance. The present application obtains the thermal conductivity, density and specific heat capacity of each battery cell, obtains the thermal diffusivity based on the thermal conductivity, density and specific heat capacity, obtains the real-time temperature gradient and real-time charging heat of each battery cell under the arrangement spacing, obtains the first real-time temperature based on the thermal diffusivity, second real-time temperature gradient and real-time charging heat, obtains the limit temperature of each battery cell in the wide temperature range, obtains the temperature compensation coefficient based on the limit temperature and the first real-time temperature, and performs temperature compensation on each battery cell based on the temperature compensation coefficient. The real-time temperature gradient refers to the rate of change of the temperature in space at a certain time. The limit temperature refers to the maximum and minimum temperature at which the battery can safely work under extreme environmental conditions. By obtaining the thermal conductivity, density and specific heat capacity of each battery cell and calculating the thermal diffusivity based on these parameters, the diffusion speed and distribution of heat in the battery can be understood, which can ensure that the heat flows more uniformly in the battery and between the batteries.Avoiding local heat accumulation, reducing heat loss, obtaining real-time temperature gradient and charging heat data of each battery monomer, calculating the first real-time temperature by combining thermal diffusivity, can more accurately evaluate the temperature change of the battery during charging, ensure that the temperature is within a reasonable range, and avoid overheating, as the performance of the battery varies greatly at different temperatures, especially when the temperature is too high or too low, which will affect the charging and discharging efficiency and safety of the battery, by obtaining the limit temperature of the battery monomer and calculating the temperature compensation coefficient according to the temperature gradient and real-time temperature, the working state of the battery system can be dynamically adjusted to ensure that the battery maintains high efficiency and safety within a wide temperature range, the introduction of the temperature compensation coefficient can compensate for the change in battery performance caused by temperature changes, prevent performance degradation or overheating in high or low temperature environments, optimize the charging and discharging efficiency of the battery, and optimize the arrangement distance of the battery monomer by combining the temperature gradient, thermal diffusivity and charging heat, which can effectively reduce the heat interference between battery monomers, optimize the overall heat dissipation effect of the battery pack, and ensure that the heat of the battery can be diffused and dissipated in time, avoiding heat concentration on some battery monomers, leading to overheating or low efficiency, and the optimized thermal management and temperature compensation mechanism can ensure that the battery maintains relatively stable performance during charging, avoiding the increase in internal resistance and the decrease in charging efficiency caused by high temperature, ensuring that the battery can operate stably under different working conditions, and the precise thermal management, temperature compensation and heat dissipation optimization realized by this method not only effectively solves the safety problem caused by excessive heat generated by internal resistance and charging current during the charging process of the storage battery, but also significantly improves the charging efficiency and discharging performance of the battery, ensuring that the storage battery system can operate stably, efficiently and safely in a wide temperature range, thereby improving the overall efficiency, reliability and service life of the battery.

[0074] In one embodiment, the step of obtaining the real-time internal resistance and charging current of each battery monomer in the storage battery and calculating the total charging heat according to a plurality of real-time internal resistances and charging currents comprises:

[0075] Obtaining the first resistance of each battery monomer in the storage battery at a preset temperature;

[0076] Obtaining the second real-time temperature and temperature change coefficient of each battery monomer in the storage battery, and obtaining the corresponding resistance increment according to each preset temperature, second real-time temperature and temperature change coefficient;

[0077] Obtaining the corresponding real-time internal resistance according to each resistance increment and first resistance;

[0078] Obtaining the charging current of each battery monomer in the storage battery, and calculating the total charging heat according to a plurality of charging currents and real-time internal resistances, wherein the calculation formula is:

[0079]

[0080] wherein C(RL) represents the total heat of charging, C(DL) k represents the kth charging current, S(DZ) k represents the kth real-time resistance, k represents the serial number of the charging current, and n represents the number of charging currents.

[0081] In the above steps S21-S24, the calculation formula for calculating the real-time internal resistance according to the first resistance, the preset temperature, the second real-time temperature and the temperature change coefficient is: S(DZ) = D(DZ) * {1 + W(XS) * [S(WD) - Y(WD)]}; wherein S(DZ) represents the real-time internal resistance, D(DZ) represents the first resistance, W(XS) * [S(WD) - Y(WD)] represents the resistance increment, W(XS) represents the temperature change coefficient, S(WD) represents the second real-time temperature, and Y(WD) represents the preset temperature. The internal resistance of the battery changes nonlinearly with the temperature and working state (charge / discharge rate, etc.) of the battery, so the preset temperature, the second real-time temperature and the temperature change coefficient are used to obtain the corresponding resistance increment. The reason is that the generation of battery heat is not only related to the size of the current, but also closely related to the dynamic change of the internal resistance. The first resistance of each battery monomer at the preset temperature and the second real-time temperature and the temperature change coefficient of each battery monomer in the battery are obtained, and the corresponding resistance increment is obtained according to each preset temperature, the second real-time temperature and the temperature change coefficient. The corresponding real-time internal resistance is obtained according to each resistance increment and the first resistance, and the total charging heat is calculated according to the plurality of charging currents and the real-time internal resistance. By combining the first resistance, the second real-time temperature and the temperature change coefficient of each battery monomer at the preset temperature, the resistance increment and the corresponding real-time internal resistance of the battery monomer are calculated in real time, which can accurately reflect the performance change of the battery at different temperatures. The internal resistance of the battery changes with the temperature, so real-time monitoring of the change of the resistance helps to more accurately evaluate the charging heat of the battery, thereby effectively managing the temperature of the battery. The total charging heat is calculated according to the plurality of charging currents and the real-time internal resistance, which helps to evaluate the heat generated by different battery monomers during charging, which makes the generation and accumulation of heat be controlled in real time, avoids heat concentration, and ensures that the battery can work efficiently. The change of the real-time internal resistance directly affects the heat generation of the battery. The battery monomer with larger internal resistance will generate more heat during charging. By accurately monitoring the resistance change of the battery, the heat generation can be effectively evaluated, thereby optimizing the arrangement distance and heat dissipation design of the battery monomer, ensuring that the battery pack can dissipate heat in time and avoid local overheating. This method combines temperature and resistance change to calculate heat, which can dynamically adjust the working mode of the battery system under different temperature environments, ensures that the battery always maintains a suitable temperature range during charging, and effectively improves the heat dissipation performance. During charging, the battery monomer with larger internal resistance or larger charging current will generate more heat. If the heat cannot be dissipated in time, it may lead to overheating or even thermal runaway, affecting the safety of the battery. By calculating the resistance change and heat generation in real time, and adjusting the temperature management and heat dissipation design of the battery monomer according to these data, overheating and thermal runaway can be effectively prevented. By combining the real-time temperature and the temperature change coefficient of the battery, the performance fluctuation of the battery caused by temperature change can be dynamically compensated, ensuring that the battery maintains a relatively stable working state under various temperature conditions.Thus, the overall safety of the system is improved. By precisely controlling the temperature and resistance of the battery monomer, the increase in battery resistance caused by overheating can be reduced, thereby reducing energy loss and improving the efficiency of battery charging and discharging. Real-time resistance monitoring and charging heat calculation can help avoid the reduction in charging efficiency caused by excessive internal resistance when the battery temperature is too high, thereby improving the overall system efficiency. By comprehensively considering the first resistance, real-time temperature and temperature change coefficient of the battery, the battery working state can be flexibly adjusted in a wide temperature range (such as extremely cold or extremely hot environment), ensuring that the battery is always within the optimal temperature range and avoiding the negative effects of extreme temperature on battery performance.

[0082] In one embodiment, the step of obtaining the battery heat radiation amount according to the size characteristics, the second real-time temperature and the ambient temperature, and calculating the arrangement spacing of the battery monomer according to the battery heat radiation amount and the total charging heat, comprises:

[0083] According to the size characteristics, the length, width and height of the battery monomer are obtained, and the calculation formula of the battery surface area according to the length, width and height is:

[0084] F(MJ) = 2[C(DC) * K(DC) + G(DC) * K(DC) + G(DC) * C(DC)];

[0085] Wherein, F(MJ) represents the battery surface area, C(DC) represents the length, K(DC) represents the width, and G(DC) represents the height;

[0086] The emissivity, thermal conductivity, second real-time temperature and ambient temperature of each battery monomer are obtained, and the calculation formula of the battery heat radiation amount according to each said emissivity, battery surface area, second real-time temperature and ambient temperature is:

[0087] R(FS) = F(SL) * a * F(MJ) * [S(WD) 4 -H(WD) 4 ];

[0088] Wherein, R(FS) represents the battery heat radiation amount, F(SL) represents the emissivity, a represents the Stuert-Boltzmann constant, F(MJ) represents the battery surface area, S(WD) represents the second real-time temperature, and H(WD) represents the ambient temperature;

[0089] The heat difference is obtained according to the difference between the total charging heat and the battery heat radiation amount;

[0090] The heat flow is calculated according to the thermal conductivity, battery surface area, second real-time temperature and ambient temperature, and the calculation formula is:

[0091] D(RL) = R(DL) * F(MJ) * [S(WD) - H(WD)];

[0092] wherein D(RL) represents a heat flow, R(DL) represents a thermal conductivity, F(MJ) represents a battery surface area, S(WD) represents a second real-time temperature, and H(WD) represents an ambient temperature;

[0093] The arrangement pitch of the battery monomers is obtained according to the ratio of the heat flow and the heat difference.

[0094] As described in steps S41-S43 above, the application obtains the length, width and height dimensions of the battery cells by size characteristics, calculates the battery surface area based on the length, width and height dimensions, calculates the battery thermal radiation based on the emissivity of each battery cell, the battery surface area, the second real-time temperature and the ambient temperature, obtains the heat difference based on the difference between the total charging heat and the battery thermal radiation, calculates the heat flow based on the thermal conductivity, the battery surface area, the second real-time temperature and the ambient temperature, and obtains the arrangement spacing of the battery cells based on the ratio of the heat flow to the heat difference. The heat flow is the heat passing through the battery or battery system per unit time. During charging and discharging, especially for battery cells with large internal resistance or large charging current, a large amount of heat is easily generated. By accurately calculating the thermal radiation, heat flow and heat difference of each battery cell, the arrangement spacing and heat dissipation path between battery cells can be reasonably designed to ensure that heat can be effectively dissipated in time, avoiding overheating of the battery, and thus improving the heat dissipation efficiency of the battery system. By calculating the ratio of the heat flow to the heat difference, a reasonable arrangement spacing can be obtained. A larger arrangement spacing can avoid mutual influence of heat between cells, while a too small spacing may lead to heat accumulation, affecting the performance and life of the battery. Therefore, the calculated arrangement spacing can make the temperature distribution of the entire battery pack more uniform, further improving the efficiency and safety of the system. By optimizing the thermal radiation and heat dissipation design of the battery, the risk of overheating of the battery can be reduced, and the safety of the battery pack can be improved, especially during charging, reducing the potential safety hazards caused by overheating. Since temperature is one of the key factors affecting battery life, excessive temperature can accelerate the aging process of the battery, affecting the capacity and performance of the battery. By ensuring that the battery temperature remains within a reasonable range, the aging rate of the battery can be effectively slowed down, prolonging the service life of the battery. Through effective heat dissipation design, the working temperature of the battery can be maintained within the optimal range, which not only reduces energy loss caused by overheating, but also ensures that the battery is always in the best working state during charging and discharging, improving the energy conversion efficiency of the entire battery system. In different temperature environments, the performance of the battery will vary. Through this optimization method based on size characteristics, thermal radiation, heat flow and other factors, the battery system can still work stably and efficiently in a wide temperature range. Reasonable design can ensure that the temperature of the battery remains within a suitable range, avoiding performance degradation. By accurately calculating the thermal management of the battery, local overheating or uneven cooling can be avoided, allowing each battery cell to perform better, ensuring that the performance of the entire battery pack is more stable and reducing the uneven performance of the battery pack caused by individual battery overheating.

[0095] In one embodiment, the step of obtaining the real-time temperature gradient and real-time charging heat of each battery cell under the arrangement spacing comprises:

[0096] acquire three-dimensional temperature distribution data of the battery monomer under arrangement interval, and acquire first change rate of battery monomer temperature on X axis according to the three-dimensional temperature distribution data;

[0097] acquire first curvature of battery monomer temperature on X axis according to the first change rate;

[0098] acquire second change rate of battery monomer temperature on Y axis according to the three-dimensional temperature distribution data, and acquire second curvature of battery monomer temperature on Y axis according to the second change rate;

[0099] acquire third change rate of battery monomer temperature on Z axis according to the three-dimensional temperature distribution data, and acquire third curvature of battery monomer temperature on Y axis according to the third change rate;

[0100] acquire real-time temperature gradient according to the third curvature, second curvature and first curvature.

[0101] As described in steps S8-S10 above, the application obtains the first change rate of the battery cell temperature on the X-axis through the three-dimensional temperature distribution data of the battery cell at the arrangement interval, obtains the first curvature of the battery cell temperature on the X-axis according to the first change rate, obtains the second change rate of the battery cell temperature on the Y-axis through the three-dimensional temperature distribution data, and obtains the second curvature of the battery cell temperature on the Y-axis according to the second change rate, obtains the third change rate of the battery cell temperature on the Z-axis through the three-dimensional temperature distribution data, and obtains the third curvature of the battery cell temperature on the Y-axis according to the third change rate, and obtains the real-time temperature gradient according to the third curvature, the second curvature and the first curvature, wherein the three-dimensional temperature distribution data refers to the spatial distribution of temperature values at each position in the battery or battery pack, the first curvature is the curvature or acceleration of the temperature field along the X-axis, that is, the change rate of the temperature change rate in the X-axis direction, that is, the second partial derivative of the data in the X-axis in the three-dimensional temperature distribution data, by accurately obtaining the temperature change rate and curvature of the battery cell, the hotspot area of heat accumulation in the battery pack can be identified, which is crucial for the heat dissipation design of the battery cell and the battery pack, which can effectively avoid local overheating, reduce the risk of thermal runaway, and improve the thermal stability of the battery, the temperature curvature and change rate can reveal the heat change trend at different positions, helping designers optimize the air circulation, heat dissipation material layout and cooling system inside the battery pack, during the charging or discharging process, the heat accumulation in the battery may cause the internal resistance to increase, affecting the charging and discharging efficiency of the battery, and even may cause overheating or performance degradation, by accurately obtaining the temperature distribution and change rate, the working temperature of the battery can be monitored in real time, and then effective measures (such as adjusting the charging rate or enabling the cooling system) can be taken to keep the battery within the optimal working temperature range, through in-depth analysis of three-dimensional temperature data, the damage caused by local overheating of the battery can be reduced, and the cycle life of the battery cell and the efficiency of the overall battery pack can be improved, the temperature of the battery cell is not uniformly distributed, especially in the case of large current charging or discharging, which may cause some cells to overheat, thereby causing thermal runaway, short circuit, even fire and other safety problems, by real-time acquisition of the curvature and rate of temperature change in each axis (X, Y, Z axis), potential overheating risk areas can be identified in advance, so that targeted cooling measures can be taken to avoid dangerous situations in the battery pack, the first, second and third curvatures can reveal the change of temperature gradient, through these information, the arrangement and interval design of the battery cell can be further adjusted to ensure that the heat can be effectively dispersed in the entire battery pack, during the design of the battery pack, the interval and arrangement of the battery cell have important influence on the overall temperature distribution, through the analysis of the three-dimensional change rate and curvature of the temperature, designers can understand the influence of different arrangement schemes on thermal management, so as to realize more reasonable battery arrangement and optimize the overall thermal performance of the battery pack, in a wide temperature range environment, the temperature fluctuation may be large, and the working state of the battery is significantly affected by the external temperature, through accurate monitoring of the temperature gradient and change rate,These changes can be better adapted to ensure that the battery can still maintain good performance in the case of temperature extremes.

[0102] In one embodiment, the step of obtaining the first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat comprises:

[0103] Obtaining the first temperature of the battery monomer at a plurality of first times, and obtaining the temperature change rate according to a plurality of the first temperature and the first time;

[0104] Obtaining the density, the specific heat capacity and the real-time charging heat of each battery monomer, and calculating the heat source term according to the density, the specific heat capacity and the real-time charging heat, wherein the calculation formula is:

[0105]

[0106] Wherein, R(YX) represents the heat source term, S(CR) represents the real-time charging heat, D(MD) represents the density, and B(RR) represents the specific heat capacity;

[0107] According to the temperature change rate, the heat source term and the real-time temperature gradient, the first real-time temperature is calculated, and the calculation formula is:

[0108]

[0109] Wherein, D(SW) represents the first real-time temperature, W(BL) represents the temperature change rate, R(YX) represents the heat source term, and S(WT) represents the real-time temperature gradient.

[0110] As described in steps S421-S425 above, the application obtains the first temperature of the battery monomer at multiple first times, and obtains the temperature change rate according to the multiple first temperatures and the first times, calculates the heat source term through the density, specific heat capacity and real-time charging heat of each battery monomer, wherein the heat source term refers to the heat source generated inside the battery by electrochemical reaction, charging and discharging process, etc., calculates the first real-time temperature according to the temperature change rate, the heat source term and the real-time temperature gradient, and through the comprehensive analysis of the real-time temperature gradient, the temperature change rate and the heat source term, the heat change of the battery monomer in the charging process can be accurately predicted, which provides accurate data support for thermal management, can optimize the cooling system, heat dissipation design and battery arrangement, ensures that the battery can be cooled in time in the charging and discharging process, avoids overheating problem, the internal resistance and charging current of the battery monomer are directly related to the generated heat, especially when charging with high internal resistance or large current, the heat accumulation is more serious. By calculating the heat source term of the battery, the thermal load of each battery monomer can be accurately estimated, which helps to optimize the arrangement distance and heat dissipation design of the battery, avoids excessive heat accumulation, and the accurate calculation of the temperature change rate and real-time temperature can reveal the heat distribution in the battery pack, so that the heat dissipation area of the battery monomer can be reasonably planned to ensure that the heat can be effectively transferred and dissipated. In the charging and discharging process, temperature has a huge impact on the performance of the battery, and too high or too low temperature will cause the battery efficiency to decrease, the service life to shorten or even damage, through the accurate calculation of real-time temperature, the battery system can be kept in the best temperature range in the charging and discharging process, the charging efficiency is improved, and the performance degradation caused by abnormal temperature is avoided. Precise calculation of the heat generated by the battery monomer can provide more detailed temperature control scheme for the battery pack to ensure that the temperature remains within a safe range, thereby reducing the probability of accidents caused by excessive temperature. Through detailed analysis of the temperature change of the battery monomer, the battery system can still work stably under extreme temperature conditions. According to the real-time temperature gradient, the system can dynamically adjust the working strategy to ensure the stability and efficiency of the battery. Through real-time monitoring of the temperature change of the battery, the problem of heat accumulation or too large temperature difference can be prevented, the stability and reliability of the entire battery system are improved, and faults or performance fluctuations caused by uneven temperature are avoided.

[0111] In one embodiment, the step of obtaining the temperature compensation coefficient according to the limit temperature and the first real-time temperature comprises:

[0112] According to the first real-time temperature, the real-time open circuit voltage of the corresponding battery monomer is obtained;

[0113] According to the limit temperature, the limit open circuit voltage of the corresponding battery monomer is obtained, and the open circuit voltage difference is obtained according to the limit open circuit voltage and the real-time open circuit voltage;

[0114] acquire the voltage variation coefficient of the battery monomer, and acquire the real-time battery capacity of the corresponding battery monomer according to the voltage variation coefficient and the open-circuit voltage difference;

[0115] acquire the limit battery capacity according to the limit temperature, and acquire the battery capacity difference according to the limit battery capacity and the real-time battery capacity;

[0116] acquire the temperature difference according to the first real-time temperature and the limit temperature, and acquire the temperature compensation coefficient according to the temperature difference and the battery capacity difference.

[0117] As described in the above steps S101-S103, the application acquires the real-time open-circuit voltage of the corresponding battery monomer through the first real-time temperature, acquires the limit open-circuit voltage of the corresponding battery monomer according to the limit temperature, wherein the limit open-circuit voltage refers to the maximum or minimum open-circuit voltage that the battery can stably output, and acquires the open-circuit voltage difference according to the limit open-circuit voltage and the real-time open-circuit voltage, acquires the real-time battery capacity of the corresponding battery monomer through the voltage variation coefficient of the battery monomer and the open-circuit voltage difference, acquires the limit battery capacity according to the limit temperature, and acquires the battery capacity difference according to the limit battery capacity and the real-time battery capacity, acquires the temperature difference according to the first real-time temperature and the limit temperature, and acquires the temperature compensation coefficient according to the temperature difference and the battery capacity difference, by monitoring the open-circuit voltage and temperature of the battery monomer in real time, the real-time capacity and performance change of the battery can be accurately estimated, which is particularly important for the battery management system, can timely reflect the health status of the battery monomer, avoid performance decline caused by temperature change, adjust the charging / discharging strategy of the battery by considering the temperature difference and compensation, avoid inappropriate operation in the case of overheating or too low temperature, so as to ensure that the battery can still work efficiently at different temperatures, by monitoring the temperature and battery performance in real time, potential heat accumulation problems can be found in time and corresponding measures can be taken to ensure the working safety of the battery pack in different temperature environments, temperature has a direct impact on the service life of the battery, especially in extreme temperature environment, the chemical reaction of the battery will be affected, by temperature compensation and capacity compensation, the battery can be prevented from working at inappropriate temperature, thereby prolonging the service life of the battery, by dynamically acquiring temperature difference, battery capacity difference and other data, the adaptability of the battery management system to complex environmental changes is enhanced, the charging, discharging strategy and temperature control measures of the battery are adjusted according to real-time data, so as to improve the adaptability and working efficiency of the battery pack in various environments.

[0118] The application also provides a storage battery integrated system for wide temperature range use, comprising:

[0119] a first calculation module, configured to acquire the real-time internal resistance and charging current of each battery monomer in the storage battery, and calculate the total charging heat according to a plurality of the real-time internal resistances and charging currents;

[0120] The first obtaining module is configured to obtain a temperature feature and a size feature of each battery monomer, wherein the temperature feature comprises a second real-time temperature and an ambient temperature;

[0121] The second calculating module is configured to obtain a battery heat radiation amount according to the size feature, the second real-time temperature and the ambient temperature, and to calculate a layout interval of the battery monomer according to the battery heat radiation amount and a total charging heat;

[0122] The second obtaining module is configured to obtain a thermal conductivity, a density and a specific heat capacity of each battery monomer, and to obtain a thermal diffusivity according to the thermal conductivity, the density and the specific heat capacity;

[0123] The third obtaining module is configured to obtain a real-time temperature gradient and a real-time charging heat of each battery monomer under the layout interval, and to obtain a first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat;

[0124] The fourth obtaining module is configured to obtain a limit temperature of each battery monomer in a wide temperature range, and to obtain a temperature compensation coefficient according to the limit temperature and the first real-time temperature;

[0125] The compensation module is configured to compensate the temperature of each battery monomer according to the temperature compensation coefficient.

[0126] In one embodiment, the third obtaining module comprises:

[0127] The first obtaining unit is configured to obtain three-dimensional temperature distribution data of the battery monomer under the layout interval, and to obtain a first change rate of the battery monomer temperature on an X axis according to the three-dimensional temperature distribution data;

[0128] The second obtaining unit is configured to obtain a first curvature of the battery monomer temperature on the X axis according to the first change rate;

[0129] The third obtaining unit is configured to obtain a second change rate of the battery monomer temperature on a Y axis according to the three-dimensional temperature distribution data, and to obtain a second curvature of the battery monomer temperature on the Y axis according to the second change rate;

[0130] The fourth obtaining unit is configured to obtain a third change rate of the battery monomer temperature on a Z axis according to the three-dimensional temperature distribution data, and to obtain a third curvature of the battery monomer temperature on the Y axis according to the third change rate;

[0131] The fifth obtaining unit is configured to obtain a real-time temperature gradient according to the third curvature, the second curvature and the first curvature.

[0132] It should be noted that each module and unit in the wide temperature range battery integrated system corresponds to each step in the wide temperature range battery integrated method.

[0133] As Figure 3 shown, the application also provides a computer device, which can be a server, and the internal structure thereof can be as Figure 3 shown. The computer device comprises a processor, a memory, a network interface and a database connected through a system bus. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The database of the computer device is configured to store all data required by the process of the battery integration method for wide temperature range use. The network interface of the computer device is configured to communicate with an external terminal through a network connection. The computer program is executed by the processor to implement the battery integration method for wide temperature range use.

[0134] Those skilled in the art can understand that Figure 3 the structure shown in the above is only a block diagram of part of the structure related to the scheme of the application, and does not constitute a limitation on the computer device to which the scheme of the application is applied.

[0135] An embodiment of the application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement any one of the above battery integration methods for wide temperature range use.

[0136] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiment methods can be included. Any reference to memory, storage, databases, or other media in this application and in examples provided herein, unless specifically stated otherwise, can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in many forms such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0137] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, device, article, or method that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, device, article, or method. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, device, article, or method that includes the element.

[0138] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, based on the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A method for integrating batteries for use over a wide temperature range, characterized by, The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. R(FS) = F(SL) * a * F(MJ) * [S(WD) 4 - H(WD) 4 ]; The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device.

2. The wide temperature range used battery integration method of claim 1, wherein, The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. ； wherein C(RL) represents the total heat of charging, C(RL) k represents the kth charging current, S(DZ) k represents the kth real-time resistance, k represents the serial number of the charging current, and n represents the number of charging currents.

3. The wide temperature range used battery integration method of claim 1, wherein, The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation method and device. The application relates to a battery temperature compensation According to the three-dimensional temperature distribution data, a third change rate of the battery monomer temperature on the Z axis is obtained, and a third curvature of the battery monomer temperature on the Z axis is obtained according to the third change rate; According to the third curvature, the second curvature and the first curvature, a real-time temperature gradient is obtained.

4. The wide temperature range used battery integration method of claim 1, wherein, The step of obtaining the first real-time temperature according to the thermal diffusivity, the real-time temperature gradient and the real-time charging heat includes: A first temperature of the battery monomer at a plurality of first times is obtained, and a temperature change rate is obtained according to a plurality of the first temperatures and the first times; The density, the specific heat capacity and the real-time charging heat of each battery monomer are obtained, and a heat source term is obtained according to the density, the specific heat capacity and the real-time charging heat; The first real-time temperature is obtained according to the temperature change rate, the heat source term and the real-time temperature gradient.

5. The wide temperature range used battery integration method of claim 1, wherein, The step of obtaining the temperature compensation coefficient according to the limit temperature and the first real-time temperature includes: A real-time open-circuit voltage of the corresponding battery monomer is obtained according to the first real-time temperature; A limit open-circuit voltage of the corresponding battery monomer is obtained according to the limit temperature, and an open-circuit voltage difference is obtained according to the limit open-circuit voltage and the real-time open-circuit voltage; A voltage change coefficient of the battery monomer is obtained, and a real-time battery capacity of the corresponding battery monomer is obtained according to the voltage change coefficient and the open-circuit voltage difference; A limit battery capacity is obtained according to the limit temperature, and a battery capacity difference is obtained according to the limit battery capacity and the real-time battery capacity; A temperature difference is obtained according to the first real-time temperature and the limit temperature, and the temperature compensation coefficient is obtained according to the temperature difference and the battery capacity difference.

6. A battery integrated system for use over a wide temperature range, characterized by, It includes: The first calculation module is used for obtaining the real-time internal resistance and the charging current of each battery monomer in the storage battery, and calculating the total charging heat according to a plurality of the real-time internal resistance and the charging current; The first acquisition module is used for obtaining the temperature characteristics and the size characteristics of each battery monomer, wherein the temperature characteristics include a second real-time temperature and an ambient temperature; The second calculation module is used for obtaining the length size, the width size and the height size of the battery monomer according to the size characteristics, and obtaining the battery surface area according to the length size, the width size and the height size; The emissivity, the thermal conductivity, the second real-time temperature and the ambient temperature of each battery monomer are obtained, and the calculation formula of the battery heat radiation is calculated according to each of the emissivity, the battery surface area, the second real-time temperature and the ambient temperature: R(FS) = F(SL) * a * F(MJ) * [S(WD) 4 - H(WD) 4 ]; Wherein, R(FS) represents the battery heat radiation, F(SL) represents the emissivity, a represents the Stefan-Boltzmann constant, F(MJ) represents the battery surface area, S(WD) represents the second real-time temperature, and H(WD) represents the ambient temperature; The heat difference is obtained according to the total charging heat and the battery heat radiation; The heat flow is obtained according to the thermal conductivity, the battery surface area, the second real-time temperature and the ambient temperature, and the arrangement spacing of the battery monomer is obtained according to the heat flow and the heat difference; The second acquisition module is used for obtaining the thermal conductivity, the density and the specific heat capacity of each battery monomer, and obtaining the thermal diffusivity according to the thermal conductivity, the density and the specific heat capacity; The third acquisition module is configured to acquire a real-time temperature gradient and a real-time charging heat of each battery monomer under the arrangement interval, and acquire a first real-time temperature according to the thermal diffusivity, the real-time temperature gradient and the real-time charging heat; The fourth acquisition module is configured to acquire a limit temperature of each battery monomer in a wide temperature range, and acquire a temperature compensation coefficient according to the limit temperature and the first real-time temperature; The compensation module is configured to perform temperature compensation on each battery monomer according to the temperature compensation coefficient.

7. The wide-temperature-range-used battery integrated system according to claim 6, characterized in that, The third acquisition module comprises: The first acquisition unit is configured to acquire three-dimensional temperature distribution data of the battery monomer under the arrangement interval, and acquire a first change rate of the battery monomer temperature on the X axis according to the three-dimensional temperature distribution data; The second acquisition unit is configured to acquire a first curvature of the battery monomer temperature on the X axis according to the first change rate; The third acquisition unit is configured to acquire a second change rate of the battery monomer temperature on the Y axis according to the three-dimensional temperature distribution data, and acquire a second curvature of the battery monomer temperature on the Y axis according to the second change rate; The fourth acquisition unit is configured to acquire a third change rate of the battery monomer temperature on the Z axis according to the three-dimensional temperature distribution data, and acquire a third curvature of the battery monomer temperature on the Z axis according to the third change rate; The fifth acquisition unit is configured to acquire a real-time temperature gradient according to the third curvature, the second curvature and the first curvature.

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor executes the computer program to realize the steps of the method in any one of claims 1 to 5.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to realize the steps of the method in any one of claims 1 to 5.

Images