Storage battery integration method and system used in wide temperature range

Abstract

The invention relates to the technical field of integration, in particular to a storage battery integration method and system used in a wide temperature range. According to the method, the size and temperature characteristics of the battery are combined, the heat radiation quantity of each single battery can be evaluated more accurately, the arrangement distance of the single batteries is optimized by calculating the heat radiation quantity and the charging heat of the single batteries, it is ensured that the heat can be dissipated more effectively in the charging process of the battery, performance reduction caused by local overheating is avoided, and the service life of the battery is prolonged. The thermal diffusivity is calculated through the thermal conductivity, the density and the specific heat capacity of each battery monomer, so that the diffusion speed and the distribution condition of heat in the battery can be known, and the first real-time temperature is calculated through the real-time temperature gradient and the charging heat data of each battery monomer in combination with the thermal diffusivity; the temperature change of the battery in the charging process can be evaluated more accurately, the temperature compensation coefficient is calculated through the limiting temperature, the temperature gradient and the real-time temperature of the single battery, and it can be ensured that the battery keeps high efficiency and safety in a wide temperature range.

Description

Technical Field

[0001] The present invention relates to the field of integration technology, and in particular to a storage battery integration method and system for use in a wide temperature range. Background Art

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

[0003] In a wide temperature range environment, the performance of the battery is greatly affected by temperature, especially during the charging and discharging process. During the charging process of the battery, heat will be generated inside, especially battery cells with large internal resistance or large charging current will generate more heat. The design of existing battery packs may not fully consider the heat dissipation of battery cells and the battery arrangement spacing, resulting in the failure to dissipate heat in time, affecting the overall battery system efficiency and safety. Summary of the invention

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

[0005] The present invention provides a battery integration method for use in a wide temperature range, 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 the real-time internal resistance and charging current;

[0007] Acquire the temperature characteristics and size characteristics of each of the battery cells, wherein the temperature characteristics include the second real-time temperature and the ambient temperature;

[0008] Acquire the battery heat radiation according to the size feature, the second real-time temperature and the ambient temperature, and calculate the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat;

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

[0010] Acquire a real-time temperature gradient and a real-time charging heat of each battery cell at an arrangement spacing, and acquire a first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat;

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

[0012] Temperature compensation is performed on each battery cell according to the temperature compensation coefficient.

[0013] Preferably, the step of 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 the real-time internal resistances and charging currents, comprises:

[0014] Obtaining a first resistance of each battery cell in the battery at a preset temperature;

[0015] Obtaining a second real-time temperature and a temperature variation coefficient of each battery cell in the battery, and obtaining a corresponding resistance increment according to each of the preset temperatures, the second real-time temperature and the temperature variation coefficient;

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

[0017] The charging current of each battery cell in the battery is obtained, and the total charging heat is obtained according to the multiple charging currents and the real-time internal resistance, wherein the calculation formula is:

[0018]

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

[0020] Preferably, the step of obtaining the battery heat radiation according to the size feature, the second real-time temperature and the ambient temperature, and calculating the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat comprises:

[0021] Acquire the length, width and height of the battery cell according to the size characteristics, and acquire the battery surface area according to the length, width and height;

[0022] The emissivity, thermal conductivity, second real-time temperature and ambient temperature of each battery cell are obtained, and the calculation formula for calculating the thermal radiation of the battery according to each of the 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 thermal radiation of the battery, F(SL) represents the emissivity, α represents the Stewart-Boltzmann constant, F(MJ) represents the surface area of ​​the battery, 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 heat radiation of the battery;

[0026] 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 cells is obtained according to the heat flow and the heat difference.

[0027] Preferably, the step of obtaining the real-time temperature gradient and real-time charging heat of each battery cell under the arrangement spacing includes:

[0028] Acquire three-dimensional temperature distribution data of the battery cells at the arrangement spacing, and acquire a first rate of change of the temperature of the battery cells on the X-axis according to the three-dimensional temperature distribution data;

[0029] Acquire a first curvature of the battery cell temperature on the X-axis according to the first change rate;

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

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

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

[0033] Preferably, 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] Acquire a first temperature of the battery cell at a plurality of first times, and acquire a temperature change rate according to the plurality of first temperatures and the first times;

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

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

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

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

[0039] Acquire a limit open circuit voltage of a corresponding battery cell according to the limit temperature, and acquire an open circuit voltage difference according to the limit open circuit voltage and a 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 an open circuit voltage difference;

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

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

[0043] The present application also provides a battery integration system for use in a wide temperature range, comprising:

[0044] A first calculation module is used to obtain the real-time internal resistance and charging current of each battery cell in the battery, and calculate the total charging heat according to the real-time internal resistance and charging current;

[0045] A first acquisition module, configured to acquire temperature characteristics and size characteristics of each of the battery cells, wherein the temperature characteristics include a second real-time temperature and an ambient temperature;

[0046] a second calculation module, configured to obtain the battery heat radiation according to the size feature, the second real-time temperature and the ambient temperature, and calculate the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat;

[0047] A second acquisition module, used to acquire the thermal conductivity, density and specific heat capacity of each battery cell, and acquire the thermal diffusivity according to the thermal conductivity, density and specific heat capacity;

[0048] A third acquisition module is used to acquire the real-time temperature gradient and real-time charging heat of each battery cell under the arrangement spacing, and acquire the first real-time temperature according to the thermal diffusion rate, the second real-time temperature gradient and the real-time charging heat;

[0049] A fourth acquisition module, used to acquire a limit temperature of each battery cell in a wide temperature range, and acquire a temperature compensation coefficient according to the limit temperature and the first real-time temperature;

[0050] The compensation module is used to perform temperature compensation on each battery cell according to the temperature compensation coefficient.

[0051] Preferably, the third acquisition module comprises:

[0052] a first acquisition unit, configured to acquire three-dimensional temperature distribution data of the battery cells at an arrangement pitch, and acquire a first rate of change of the temperature of the battery cells on an X-axis according to the three-dimensional temperature distribution data;

[0053] A second acquisition unit, configured to acquire a first curvature of the battery cell temperature on the X-axis according to the first change rate;

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

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

[0056] A fifth acquisition unit is used to acquire a real-time temperature gradient according to the third curvature, the second curvature and the first curvature.

[0057] The present invention also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned battery integration method for use in a wide temperature range when executing the computer program.

[0058] The present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned storage battery integration method for use in a wide temperature range are implemented.

[0059] The beneficial effects of the present invention are as follows: the present invention can effectively monitor the accumulation of heat inside the battery by acquiring the internal resistance, charging current and other data of the battery cells in real time, calculating the total heat generated during the charging process, and combining the size and temperature characteristics of the battery to more accurately evaluate the thermal radiation of each cell to prevent local overheating. The arrangement spacing of the battery cells is optimized by calculating the thermal radiation and charging heat of the battery cells to ensure that the battery can dissipate heat more effectively during the charging process and avoid performance degradation caused by local overheating. By optimizing temperature management, the battery can be kept running within an ideal temperature range, thereby maintaining high charging efficiency and performance. The thermal conductivity and density of each battery cell are used to measure the thermal conductivity and density of the battery cells. Calculating thermal diffusivity with specific heat capacity can help understand the diffusion rate and distribution of heat in the battery, which can ensure that heat flows more evenly inside and between batteries, avoid local accumulation of heat, and reduce heat loss. By calculating the first real-time temperature through the real-time temperature gradient and charging heat data of each battery cell in combination with the thermal diffusivity, the temperature change of the battery during the charging process can be more accurately evaluated to ensure that the temperature is within a reasonable range to avoid overheating. By obtaining the extreme temperature of the battery cell and calculating the temperature compensation coefficient based on 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 over a wide temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 The figure is a schematic diagram of a method flow according to an embodiment of the present invention.

[0061] Figure 2 FIG. 1 is a schematic diagram of a device structure according to an embodiment of the present invention.

[0062] Figure 3 A schematic diagram of the internal structure of a computer device according to an embodiment of the present application.

[0063] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

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

[0065] like Figure 1-Figure 3 As shown, the present application provides a battery integration method for use in a wide temperature range, comprising:

[0066] S1. Obtaining the real-time internal resistance and charging current of each battery cell in the battery, and calculating the total charging heat according to the real-time internal resistance and charging current;

[0067] S2. Acquire temperature characteristics and size characteristics of each of the battery cells, wherein the temperature characteristics include a second real-time temperature and an ambient temperature;

[0068] S3, obtaining the battery heat radiation according to the size feature, the second real-time temperature and the ambient temperature, and calculating the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat;

[0069] S4, 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;

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

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

[0072] S7. Perform temperature compensation on each battery cell according to the temperature compensation coefficient.

[0073] As described in the above steps S1-S2, in a wide temperature range environment, the performance of the battery is greatly affected by the temperature, especially during the charging and discharging process. During the charging process of the battery, heat will be generated inside, especially the battery cells with large internal resistance or large charging current will generate more heat. The design of the existing battery pack may not fully consider the heat dissipation of the battery cells and the battery arrangement spacing, resulting in the failure to dissipate the heat in time, affecting the overall battery system efficiency and safety. The present invention obtains the real-time internal resistance and charging current of each battery cell in the battery, and calculates the total charging heat according to the multiple real-time internal resistances and charging currents, and obtains the size characteristics and temperature characteristics of each battery cell. The second real-time temperature and the ambient temperature, according to the size characteristics , the second real-time temperature and the ambient temperature are used to obtain the battery thermal radiation, and the arrangement spacing of the battery cells is calculated based on the battery thermal radiation and the total charging heat. Among them, the battery thermal radiation refers to the heat radiated outward by the battery surface through electromagnetic waves (mainly infrared rays), the arrangement spacing refers to the distance between each single battery in the battery pack, and 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 cells in real time and calculating the total heat generated during the charging process, the accumulation of heat inside the battery can be effectively monitored. Combined with the size and temperature characteristics of the battery, the thermal radiation of each single cell can be more accurately evaluated to prevent local overheating. The arrangement spacing of the battery cells is optimized by calculating the thermal radiation and charging heat of the battery cells to ensure Ensure that the battery can dissipate heat more effectively during the charging process to avoid performance degradation caused by local overheating. Reasonable temperature management and optimized heat dissipation mechanism can help avoid these safety risks. After the arrangement spacing of the battery cells is optimized, it helps to reduce the temperature unevenness caused by heat accumulation, thereby improving the overall safety of the battery pack and avoiding the overall performance degradation of the battery pack due to overheating of the single 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 invention obtains the thermal conductivity, density and specific heat capacity of each battery cell, and obtains the thermal diffusivity based on the thermal conductivity, density and specific heat capacity. By obtaining the real-time temperature gradient and real-time charging heat of each battery cell at the arrangement spacing , and obtain the first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat, by 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, and performing temperature compensation on each battery cell according to the temperature compensation coefficient, wherein the real-time temperature gradient refers to the rate of change of the internal or surface temperature of the battery in space at a certain moment, and the limit temperature refers to the highest and lowest temperatures at which the battery can work safely 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, it can help understand the diffusion speed and distribution of heat in the battery, which can ensure that the heat flows more evenly inside and between batteries,Avoid local accumulation of heat, reduce heat loss, obtain the real-time temperature gradient and charging heat data of each battery cell, and calculate the first real-time temperature by combining the thermal diffusivity. The temperature change of the battery during the charging process can be more accurately evaluated to ensure that the temperature is within a reasonable range, thereby avoiding overheating. Since the performance of the battery varies greatly at different temperatures, especially when the temperature is too high or too low, it will affect the charging and discharging efficiency and safety of the battery. By obtaining the limit temperature of the battery cell and calculating the temperature compensation coefficient based on the temperature gradient and the real-time temperature, the working state of the battery system can be dynamically adjusted to ensure that the battery maintains high efficiency and safety in a wide temperature range. The introduction of the temperature compensation coefficient can compensate for the changes in battery performance caused by temperature changes, prevent performance degradation or overheating in high or low temperature environments, and optimize the charging and discharging efficiency of the battery. By combining the temperature gradient, thermal diffusivity and charging heat Optimizing the arrangement spacing of battery cells can effectively reduce the heat interference between battery cells, optimize the overall heat dissipation effect of the battery pack, ensure that the heat of the battery can be diffused and dissipated in time, and avoid heat concentration on certain battery cells, resulting in overheating or inefficiency. The optimized thermal management and temperature compensation mechanism can ensure that the battery maintains relatively stable performance during the charging process, avoid the increase of internal resistance and the decrease of charging efficiency due to excessive temperature, and ensure that the battery can operate stably under different working conditions. The precise thermal management, temperature compensation and heat dissipation optimization achieved by this method can not only effectively solve the safety problem caused by excessive heat generated by the internal resistance and charging current during the charging process of the battery, but also significantly improve the charging efficiency and discharge performance of the battery, ensuring that the battery system can operate stably, efficiently and safely in a wide temperature range environment, 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 cell in the battery, and calculating the total charging heat according to a plurality of the real-time internal resistances and charging currents, comprises:

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

[0076] Obtaining a second real-time temperature and a temperature variation coefficient of each battery cell in the battery, and obtaining a corresponding resistance increment according to each of the preset temperatures, the second real-time temperature and the temperature variation coefficient;

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

[0078] The charging current of each battery cell in the battery is obtained, and the total charging heat is calculated according to the multiple charging currents and the real-time internal resistance, wherein the calculation formula is:

[0079]

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

[0081] As described 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 (charging and discharging 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 magnitude of the current, but also closely related to the dynamic change of the internal resistance. The present invention obtains the first resistance of each battery cell in the battery at a preset temperature and the second real-time temperature and temperature change coefficient of each battery cell in the battery, and obtains the corresponding resistance increment according to each preset temperature, the second real-time temperature and the temperature change coefficient, obtains the corresponding real-time internal resistance according to each resistance increment and the first resistance, and calculates the total charging heat according to multiple charging currents and real-time internal resistances. By combining the first resistance of each battery cell at the preset temperature, the second real-time temperature and the temperature change coefficient, the resistance increment and the corresponding real-time internal resistance of the battery cell are calculated in real time, which can accurately reflect the performance changes of the battery at different temperatures. The internal resistance of the battery will change with temperature. Therefore, real-time monitoring of resistance changes can help to more accurately evaluate the charging heat of the battery, thereby effectively managing the battery temperature. Calculating the total charging heat based on multiple charging currents and real-time internal resistance can help evaluate the heat generated by different battery cells during the charging process. This allows the generation and accumulation of heat to be controlled in real time, avoiding heat concentration and ensuring that the battery can work efficiently. The change of real-time internal resistance directly affects the heat generation of the battery. Battery cells with larger internal resistance will generate more heat during the charging process. By accurately monitoring the resistance changes of the battery, the generation of heat can be effectively evaluated, thereby optimizing the arrangement spacing and heat dissipation design of the battery cells, ensuring that the battery pack can dissipate heat in time and avoid local overheating. This method is combined with By calculating the heat by temperature and resistance changes, the working mode of the battery system can be dynamically adjusted under different temperature environments to ensure that the battery always maintains a suitable temperature range during the charging process, effectively improving the heat dissipation performance. During the charging process, battery cells with larger internal resistance or larger charging current will generate more heat. If the heat cannot be dissipated in time, it may cause 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 cells according to these data, it can effectively prevent the occurrence of overheating and thermal runaway. Combined with the real-time temperature and temperature change coefficient of the battery, it can dynamically compensate for the battery performance fluctuations caused by temperature changes, ensuring that the battery maintains a relatively stable working state under various temperature conditions.This improves the overall safety of the system. By precisely controlling the temperature and resistance of the battery cells, the increase in battery internal resistance caused by overheating can be reduced, thereby reducing energy loss and improving the efficiency of battery charging and discharging. Real-time internal resistance monitoring and charging heat calculation 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 battery's first resistance, real-time temperature and temperature variation coefficient, the battery's operating state can be flexibly adjusted within a wide temperature range (such as extremely cold or extremely hot environments), ensuring that the battery is always within the optimal temperature range and avoiding the negative impact of extreme temperatures on battery performance.

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

[0083] The length, width and height of the battery cell are obtained according to the size characteristics, and the calculation formula for calculating 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] Among them, F (MJ) represents the battery surface area, C (DC) represents the length dimension, K (DC) represents the width dimension, and G (DC) represents the height dimension;

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

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

[0088] Wherein, R(FS) represents the thermal radiation of the battery, F(SL) represents the emissivity, α represents the Stewart-Boltzmann constant, F(MJ) represents the surface area of ​​the battery, S(WD) represents the second real-time temperature, and H(WD) represents the ambient temperature;

[0089] Obtaining a heat difference according to a difference between the total charging heat and the heat radiation of the battery;

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

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

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

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

[0094] As described in the above steps S41-S43, the present invention obtains the length, width and height of the battery cell through size characteristics, and calculates the battery surface area according to the length, width and height, calculates the battery thermal radiation through the emissivity, battery surface area, second real-time temperature and ambient temperature of each battery cell, obtains the heat difference according to the difference between the total charging heat and the battery thermal radiation, calculates the heat flow according to the thermal conductivity, the battery surface area, the second real-time temperature and the ambient temperature, and obtains the arrangement spacing of the battery cell according to the ratio of the heat flow and the heat difference, wherein the heat flow is the heat passing through the battery or battery system per unit time. During the charging and discharging process, especially the battery cell with a large internal resistance or a 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 the battery cells can be reasonably designed to ensure that the heat can be effectively dissipated in time, avoid battery overheating, and thereby improve 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 the heat from affecting each other between cells, while a too small spacing may cause heat accumulation, affecting battery performance and life. 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 battery overheating can be reduced and the safety of the battery pack can be improved, especially during the charging process, reducing the potential safety hazards caused by overheating. Since temperature is one of the key factors affecting battery life, excessively high temperature will accelerate the aging process of the battery and affect the battery capacity and performance. By ensuring that the battery temperature remains within a reasonable range, the aging rate of the battery can be effectively slowed down and the battery life can be extended. Through effective heat dissipation design, the operating temperature of the battery can be kept within the optimal range. This It not only reduces the energy loss caused by overheating, but also ensures that the battery is always in the best working state during the charging and discharging process, and improves the energy conversion efficiency of the entire battery system. Under different temperature environments, the performance of the battery will be different. Through this optimization method based on multiple factors such as size characteristics, thermal radiation, and heat flow, it can ensure that the battery system can still work stably and efficiently in a wide temperature range. Whether it is an extremely cold environment or a high temperature environment, a reasonable design can ensure that the battery temperature remains within the appropriate range to avoid performance degradation. By accurately calculating the thermal management of the battery, local overheating or uneven cooling can be avoided, so that the performance of each battery cell can be better utilized, thereby ensuring that the performance of the entire battery pack is more stable and reducing uneven battery pack performance caused by overheating of individual batteries.

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

[0096] Acquire three-dimensional temperature distribution data of the battery cells at the arrangement spacing, and acquire a first rate of change of the temperature of the battery cells on the X-axis according to the three-dimensional temperature distribution data;

[0097] Acquire a first curvature of the battery cell temperature on the X-axis according to the first change rate;

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

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

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

[0101] As described in the above steps S8-S10, the present invention obtains a first rate of change of the battery cell temperature on the X-axis through the three-dimensional temperature distribution data of the battery cell under the arrangement spacing, obtains a first curvature of the battery cell temperature on the X-axis according to the first rate of change, obtains a second rate of change of the battery cell temperature on the Y-axis through the three-dimensional temperature distribution data, and obtains a second curvature of the battery cell temperature on the Y-axis according to the second rate of change, obtains a third rate of change of the battery cell temperature on the Z-axis through the three-dimensional temperature distribution data, and obtains a third curvature of the battery cell temperature on the Y-axis according to the third rate of change, and obtains a 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 each temperature inside the battery or in the battery pack. The spatial distribution of the temperature value at the position. The first curvature is the curvature or acceleration of the temperature field along the X-axis, that is, the rate of change of the temperature change rate in the X-axis direction, that is, the second-order partial derivative of the data on the X-axis in the three-dimensional temperature distribution data is obtained. By accurately obtaining the temperature change rate and curvature of the battery cell, the hot spot area of ​​heat accumulation in the battery pack can be identified, which is crucial for the heat dissipation design of the battery cell and battery pack, and 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 charging or discharging, heat accumulation inside the battery may cause an increase in internal resistance. The temperature distribution and rate of change of the temperature can affect the battery's charging and discharging efficiency, and may even cause overheating or performance degradation. By accurately obtaining the temperature distribution and change rate, the battery's operating temperature can be monitored in real time, and effective measures (such as adjusting the charging rate or enabling the cooling system) can be taken to keep the battery within the optimal operating 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 uneven temperature distribution of the battery cell, especially in the case of high current charging or discharging, may cause some cells to have too high temperatures, thereby causing thermal runaway, short circuit, and even fire and other safety problems. By obtaining the curvature and rate of temperature change in each axis (X, Y, and Z axes) in real time, potential damage can be identified in advance. The overheating risk area can be identified, so that targeted cooling measures can be taken to avoid danger to the battery pack. The first, second and third curvatures can reveal the change in temperature gradient. This information can be used to further adjust the arrangement and spacing design of the battery cells to ensure that the heat can be effectively dispersed throughout the battery pack. When designing the battery pack, the spacing and arrangement of the battery cells have an important influence on the overall temperature distribution. The three-dimensional temperature change rate and curvature analysis can help designers understand the impact of different arrangement schemes on thermal management, thereby achieving a more reasonable battery arrangement and optimizing 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,It can better adapt to these changes and ensure that the battery can still maintain good performance under extreme temperature conditions.

[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] Acquire a first temperature of the battery cell at a plurality of first times, and acquire a temperature change rate according to the plurality of first temperatures and the first times;

[0104] The density, specific heat capacity and real-time charging heat of each battery cell are obtained, and the heat source term is calculated according to the density, specific heat capacity and real-time charging heat, wherein the calculation formula is:

[0105]

[0106] Among them, 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] The first real-time temperature is calculated according to the temperature change rate, the heat source term and the real-time temperature gradient, wherein 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 the above steps S421-S425, the present invention obtains the first temperature of the battery cell at multiple first times, and obtains the temperature change rate based on the multiple first temperatures and the first time, and calculates the heat source term through the density, specific heat capacity and real-time charging heat of each battery cell, wherein the heat source term refers to the heat source generated by electrochemical reactions, charging and discharging processes, etc. inside the battery, and calculates the first real-time temperature according to the temperature change rate, the heat source term and the real-time temperature gradient. Through comprehensive analysis of the real-time temperature gradient, the temperature change rate and the heat source term, the heat change of the battery cell during 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 layout, ensure that the battery can dissipate heat in time during the charging and discharging process, and avoid overheating problems. The internal resistance and charging current of the battery cell are directly related to the heat generated, 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 heat load of each battery cell can be accurately estimated, which helps optimize the battery arrangement spacing and heat dissipation design to avoid excessive heat accumulation. 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 cell can be reasonably planned to ensure that the heat can be effectively transferred and dissipated. During the charging and discharging process, the temperature has a huge impact on the performance of the battery. Too high or too low temperature will cause the battery efficiency to decrease, shorten its life or even damage it. Through the accurate calculation of the real-time temperature, the battery system can be kept in the optimal temperature range during the charging and discharging process, improving the charging efficiency and avoiding abnormal temperature. The performance degradation caused by this can be accurately calculated by the heat generated by the battery cells, which can provide a more detailed temperature control solution for the battery pack, ensuring that the temperature is kept within a safe range, thereby reducing the probability of accidents caused by excessive temperature. By conducting a detailed analysis of the temperature changes of the battery cells, the battery system can still maintain stable operation 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. By monitoring the battery temperature changes in real time, it can prevent heat accumulation or excessive temperature differences, improve the stability and reliability of the entire battery system, and avoid failures or performance fluctuations caused by uneven temperature.

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

[0112] Acquiring a real-time open circuit voltage of a corresponding battery cell according to the first real-time temperature;

[0113] Acquire a limit open circuit voltage of a corresponding battery cell according to the limit temperature, and acquire an open circuit voltage difference according to the limit open circuit voltage and a real-time open circuit voltage;

[0114] 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 an open circuit voltage difference;

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

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

[0117] As described in the above steps S101-S103, the present invention obtains the real-time open circuit voltage of the corresponding battery cell through the first real-time temperature, obtains the limit open circuit voltage of the corresponding battery cell 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 obtains the open circuit voltage difference according to the limit open circuit voltage and the real-time open circuit voltage, obtains the real-time battery capacity of the corresponding battery cell through the voltage change coefficient of the battery cell and the open circuit voltage difference, obtains the limit battery capacity according to the limit temperature, obtains the battery capacity difference according to the limit battery capacity and the real-time battery capacity, obtains the temperature difference according to the first real-time temperature and the limit temperature, and obtains the temperature compensation coefficient according to the temperature difference and the battery capacity difference, and through real-time monitoring of the open circuit voltage and temperature of the battery cell, the real-time capacity and performance changes of the battery can be accurately estimated, which is particularly important for the battery management system, which can timely reflect the health status of the battery cell and avoid the battery capacity caused by temperature changes. By considering the temperature difference and compensating for it, the battery's charge / discharge strategy can be adjusted to avoid inappropriate operations when overheating or the temperature is too low, thereby ensuring that the battery can still work efficiently at different temperatures. By real-time monitoring of temperature and battery performance, potential heat accumulation problems can be discovered 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 environments, the chemical reaction of the battery will be affected. Through temperature compensation and capacity compensation, the battery can be prevented from working at an inappropriate temperature, thereby extending the battery's service life. By dynamically acquiring data such as temperature difference and battery capacity difference, the battery management system's ability to adapt to complex environmental changes is enhanced. The battery's charging and discharging strategies and temperature control measures are adjusted according to real-time data, thereby improving the battery pack's adaptability and work efficiency in various environments.

[0118] The present application also provides a battery integration system for use in a wide temperature range, comprising:

[0119] A first calculation module is used to obtain the real-time internal resistance and charging current of each battery cell in the battery, and calculate the total charging heat according to the real-time internal resistance and charging current;

[0120] A first acquisition module, configured to acquire temperature characteristics and size characteristics of each of the battery cells, wherein the temperature characteristics include a second real-time temperature and an ambient temperature;

[0121] a second calculation module, configured to obtain the battery heat radiation according to the size feature, the second real-time temperature and the ambient temperature, and calculate the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat;

[0122] A second acquisition module, used to acquire the thermal conductivity, density and specific heat capacity of each battery cell, and acquire the thermal diffusivity according to the thermal conductivity, density and specific heat capacity;

[0123] A third acquisition module is used to acquire the real-time temperature gradient and real-time charging heat of each battery cell under the arrangement spacing, and acquire the first real-time temperature according to the thermal diffusion rate, the second real-time temperature gradient and the real-time charging heat;

[0124] A fourth acquisition module, used to acquire a limit temperature of each battery cell in a wide temperature range, and acquire a temperature compensation coefficient according to the limit temperature and the first real-time temperature;

[0125] The compensation module is used to perform temperature compensation on each battery cell according to the temperature compensation coefficient.

[0126] In one embodiment, the third acquisition module includes:

[0127] a first acquisition unit, configured to acquire three-dimensional temperature distribution data of the battery cells at an arrangement pitch, and acquire a first rate of change of the temperature of the battery cells on an X-axis according to the three-dimensional temperature distribution data;

[0128] A second acquisition unit, configured to acquire a first curvature of the battery cell temperature on the X-axis according to the first change rate;

[0129] a third acquisition unit, configured to acquire a second change rate of the battery cell temperature on the Y-axis according to the three-dimensional temperature distribution data, and acquire a second curvature of the battery cell temperature on the Y-axis according to the second change rate;

[0130] a fourth acquisition unit, configured to acquire a third change rate of the battery cell temperature on the Z axis according to the three-dimensional temperature distribution data, and acquire a third curvature of the battery cell temperature on the Y axis according to the third change rate;

[0131] A fifth acquisition unit is used to acquire 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 battery integration system for use in a wide temperature range corresponds one-to-one to the steps in the battery integration method for use in a wide temperature range.

[0133] like Figure 3 As shown, the present application also provides a computer device, which may be a server, and its internal structure may be as shown in Figure 3 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor designed by the computer is used to provide computing and control capabilities. The memory of the computer device includes 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 memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store all data required for the process of the battery integration method for use in a wide temperature range. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the battery integration method for use in a wide temperature range is implemented.

[0134] Those skilled in the art will understand that Figure 3 The structure shown in is merely a block diagram of a portion of the structure related to the present application solution and does not constitute a limitation on the computer device to which the present application solution is applied.

[0135] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, any of the above-mentioned battery integration methods for use in a wide temperature range is implemented.

[0136] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media provided in this application and used in the embodiments may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of 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 article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, device, article or method including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, device, article or method. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, device, article or method including the element.

[0138] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for integrating batteries for use in a wide temperature range, characterized in that: include: Obtaining the real-time internal resistance and charging current of each battery cell in the battery, and calculating the total charging heat according to the real-time internal resistance and charging current; Acquire the temperature characteristics and size characteristics of each of the battery cells, wherein the temperature characteristics include the second real-time temperature and the ambient temperature; Acquire the battery heat radiation according to the size feature, the second real-time temperature and the ambient temperature, and calculate the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat; Obtaining thermal conductivity, density and specific heat capacity of each battery cell, and obtaining thermal diffusivity based on the thermal conductivity, density and specific heat capacity; Acquire a real-time temperature gradient and a real-time charging heat of each battery cell at an arrangement spacing, and acquire a first real-time temperature according to the thermal diffusivity, the second real-time temperature gradient and the real-time charging heat; Obtaining a limit temperature of each battery cell in a wide temperature range, and obtaining a temperature compensation coefficient according to the limit temperature and the first real-time temperature; Temperature compensation is performed on each battery cell according to the temperature compensation coefficient.

2. The method for integrating batteries for use in a wide temperature range according to claim 1, characterized in that: The step of 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 the real-time internal resistances and charging currents, comprises: Obtaining a first resistance of each battery cell in the battery at a preset temperature; Obtaining a second real-time temperature and a temperature variation coefficient of each battery cell in the battery, and obtaining a corresponding resistance increment according to each of the preset temperatures, the second real-time temperature and the temperature variation coefficient; Acquire a corresponding real-time internal resistance according to each resistance increment and the first resistance; The charging current of each battery cell in the battery is obtained, and the total charging heat is obtained according to the multiple charging currents and the real-time internal resistance, wherein the calculation formula is: Among them, C(RL) represents the total heat of charging, C(DL) k represents the kth charging current, S(DZ) k represents the kth real-time internal resistance, k represents the sequence number of the charging current, and n represents the number of the charging current.

3. The method for integrating batteries for use in a wide temperature range according to claim 1, characterized in that: The step of obtaining the battery heat radiation according to the size feature, the second real-time temperature and the ambient temperature, and calculating the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat comprises: Acquire the length, width and height of the battery cell according to the size characteristics, and acquire the battery surface area according to the length, width and height; The emissivity, thermal conductivity, second real-time temperature and ambient temperature of each battery cell are obtained, and the calculation formula for calculating the battery thermal radiation amount according to each of the emissivity, battery surface area, second real-time temperature and ambient temperature is: R(FS)=F(SL)*α*F(MJ)*[S(WD) 4 -H(WD) 4 ]; Wherein, R(FS) represents the thermal radiation of the battery, F(SL) represents the emissivity, α represents the Stewart-Boltzmann constant, F(MJ) represents the surface area of ​​the battery, S(WD) represents the second real-time temperature, and H(WD) represents the ambient temperature; Obtaining a heat difference according to the total charging heat and the heat radiation of the battery; 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 cells is obtained according to the heat flow and the heat difference.

4. The method for integrating storage batteries for use in a wide temperature range according to claim 1, characterized in that: The step of obtaining the real-time temperature gradient and real-time charging heat of each battery cell under the arrangement spacing includes: Acquire three-dimensional temperature distribution data of the battery cells at the arrangement spacing, and acquire a first rate of change of the temperature of the battery cells on the X-axis according to the three-dimensional temperature distribution data; Acquire a first curvature of the battery cell temperature on the X-axis according to the first change rate; Acquire a second change rate of the battery cell temperature on the Y-axis according to the three-dimensional temperature distribution data, and acquire a second curvature of the battery cell temperature on the Y-axis according to the second change rate; Acquire a third change rate of the battery cell temperature on the Z axis according to the three-dimensional temperature distribution data, and acquire a third curvature of the battery cell temperature on the Y axis according to the third change rate; A real-time temperature gradient is acquired according to the third curvature, the second curvature and the first curvature.

5. The method for integrating storage batteries for use in a wide temperature range according to claim 1, characterized in that: 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: Acquire a first temperature of the battery cell at a plurality of first times, and acquire a temperature change rate according to the plurality of first temperatures and the first times; Obtaining the density, specific heat capacity and real-time charging heat of each battery cell, and obtaining a heat source item according to the density, specific heat capacity and real-time charging heat; A first real-time temperature is acquired according to the temperature change rate, the heat source term and the real-time temperature gradient.

6. The method for integrating storage batteries for use in a wide temperature range according to claim 1, characterized in that: The step of obtaining a temperature compensation coefficient according to the limit temperature and the first real-time temperature comprises: Acquiring a real-time open circuit voltage of a corresponding battery cell according to the first real-time temperature; Acquire a limit open circuit voltage of a corresponding battery cell according to the limit temperature, and acquire an open circuit voltage difference according to the limit open circuit voltage and a real-time open circuit voltage; 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 an open circuit voltage difference; Acquire a limit battery capacity according to the limit temperature, and acquire a battery capacity difference 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 a temperature compensation coefficient is obtained according to the temperature difference and the battery capacity difference.

7. A battery integration system for use in a wide temperature range, characterized in that: include: A first calculation module is used to obtain the real-time internal resistance and charging current of each battery cell in the battery, and calculate the total charging heat according to the real-time internal resistance and charging current; A first acquisition module, configured to acquire temperature characteristics and size characteristics of each of the battery cells, wherein the temperature characteristics include a second real-time temperature and an ambient temperature; a second calculation module, configured to obtain the battery heat radiation according to the size feature, the second real-time temperature and the ambient temperature, and calculate the arrangement spacing of the battery cells according to the battery heat radiation and the total charging heat; A second acquisition module, used to acquire the thermal conductivity, density and specific heat capacity of each battery cell, and acquire the thermal diffusivity according to the thermal conductivity, density and specific heat capacity; A third acquisition module is used to acquire the real-time temperature gradient and real-time charging heat of each battery cell under the arrangement spacing, and acquire the first real-time temperature according to the thermal diffusion rate, the second real-time temperature gradient and the real-time charging heat; A fourth acquisition module, used to acquire a limit temperature of each battery cell 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 used to perform temperature compensation on each battery cell according to the temperature compensation coefficient.

8. The battery integration system for use in a wide temperature range according to claim 7, characterized in that: The third acquisition module includes: a first acquisition unit, configured to acquire three-dimensional temperature distribution data of the battery cells at an arrangement pitch, and acquire a first rate of change of the temperature of the battery cells on an X-axis according to the three-dimensional temperature distribution data; A second acquisition unit, configured to acquire a first curvature of the battery cell temperature on the X-axis according to the first change rate; a third acquisition unit, configured to acquire a second change rate of the battery cell temperature on the Y-axis according to the three-dimensional temperature distribution data, and acquire a second curvature of the battery cell temperature on the Y-axis according to the second change rate; a fourth acquisition unit, configured to acquire a third change rate of the battery cell temperature on the Z axis according to the three-dimensional temperature distribution data, and acquire a third curvature of the battery cell temperature on the Y axis according to the third change rate; A fifth acquisition unit is used to acquire a real-time temperature gradient according to the third curvature, the second curvature and the first curvature.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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