Calibration method, device, system and equipment, readable storage medium and program product

Abstract

The invention relates to a calibration method, device, system and equipment, a readable storage medium and a program product. The method comprises the following steps: obtaining SOP data to be calibrated of a battery system, wherein the SOP data to be calibrated comprises power to be calibrated corresponding to a plurality of different battery states; simulating an estimated battery power required for the vehicle to work under a target working condition when the battery system is loaded on the vehicle; and for each battery state, calibrating the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system in the battery state. By adopting the method, the calibration flexibility of the SOP data can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a calibration method, device, system, equipment, readable storage medium and program product. Background Art

[0002] The SOP (State of Power) data of the battery system is a key parameter of the battery system. The SOP data is also called the SOP table. The SOP data includes the power of the battery system under different SOC (State of Charge) and different temperature combinations. The SOP data is usually converted according to the measured power of the battery cells in the battery system.

[0003] In order to ensure the accuracy of SOP data, currently, SOP data is seasonally calibrated (summer calibration and winter calibration) at the vehicle level, and the various powers in the SOP data are usually calibrated through actual vehicle testing.

[0004] However, the above calibration method has the problem of poor calibration flexibility. Summary of the invention

[0005] Based on this, it is necessary to provide a calibration method, device, system, equipment, readable storage medium and program product that can improve the calibration flexibility of SOP data in response to the above technical problems.

[0006] In a first aspect, the present application provides a calibration method. The calibration method comprises:

[0007] Acquire the SOP data to be calibrated of the battery system, wherein the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states;

[0008] simulating an estimated battery power required for the vehicle to operate under target operating conditions when the battery system is installed in the vehicle;

[0009] For each of the battery states, the power to be calibrated corresponding to the battery state is calibrated according to the estimated battery power and the allowable battery power of the battery system under the battery state.

[0010] In one of the embodiments, calibrating the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state includes:

[0011] determining a minimum power from the estimated battery power and the allowed battery power;

[0012] The power to be calibrated is calibrated according to the minimum power.

[0013] In one embodiment, calibrating the power to be calibrated according to the minimum power includes:

[0014] Performing charging and discharging processing on the battery system according to the minimum power;

[0015] If a cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power, and the cell failure includes a cell undervoltage failure or a cell overvoltage failure.

[0016] In one embodiment, the method further comprises:

[0017] Re-charging and discharging the battery system according to the preset power;

[0018] If there is no cell failure in the battery system during the charging and discharging process, determining whether the first simulation driving parameter of the vehicle meets a preset condition;

[0019] If the first simulation driving parameter meets the preset condition, it is determined that the preset power calibration is completed.

[0020] In one embodiment, the method further comprises:

[0021] If there is no cell failure in the battery system during the charging and discharging process, determining whether the second simulation driving parameter of the vehicle meets a preset condition;

[0022] If the second simulation driving parameter meets the preset condition, it is determined that the calibration of the power to be calibrated is completed.

[0023] In one embodiment, the method further comprises:

[0024] During the charging and discharging process of the battery system, the thermal management device is controlled to control the temperature of the battery system according to the target operating condition and the thermal management strategy corresponding to the battery state.

[0025] In one embodiment, the method further comprises:

[0026] The calibrated SOP data corresponding to the SOP data to be calibrated is written into the battery management system of the battery system.

[0027] In one embodiment, the battery state includes a target temperature and a target SOC, and before calibrating the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state, the method further includes:

[0028] The current SOC of the battery system is adjusted to the target SOC, and the ambient temperature in the environmental container where the battery system is located is adjusted to the target temperature.

[0029] In one embodiment, the simulating the estimated battery power required for the vehicle to operate under target operating conditions when the battery system is installed in the vehicle includes:

[0030] The estimated battery power is obtained according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

[0031] In a second aspect, the present application further provides a calibration device. The calibration device comprises:

[0032] An acquisition module is used to acquire the SOP data to be calibrated of the battery system, wherein the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states;

[0033] A simulation module, used to simulate the estimated battery power required for the vehicle to operate under target conditions when the battery system is installed in the vehicle;

[0034] The calibration module is used to calibrate the power to be calibrated corresponding to each battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state.

[0035] In a third aspect, the present application further provides a calibration system. The calibration system comprises:

[0036] A calibration device, the calibration device is used to connect to the battery system through a high-voltage circuit and a low-voltage circuit,

[0037] Among them, the calibration equipment is used to obtain the SOP data to be calibrated of the battery system, and the SOP data to be calibrated includes the powers to be calibrated corresponding to multiple different battery states; simulating the estimated battery power required for the vehicle to operate under the target working conditions when the battery system is loaded on the vehicle; for each battery state, calibrating the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state.

[0038] In one of the embodiments, the calibration device is specifically used to determine a minimum power from the estimated battery power and the allowed battery power, and calibrate the power to be calibrated according to the minimum power.

[0039] In one of the embodiments, the calibration device is specifically used to charge and discharge the battery system according to the minimum power. If a cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power. The cell failure includes a cell undervoltage failure or a cell overvoltage failure.

[0040] In one of the embodiments, the calibration device is also used to re-charge and discharge the battery system according to the preset power. If there is no cell failure in the battery system during the charging and discharging process, it is determined whether the first simulated driving parameter of the vehicle meets the preset conditions. If the first simulated driving parameter meets the preset conditions, it is determined that the preset power calibration is completed.

[0041] In one of the embodiments, the calibration device is also used to determine whether the second simulated driving parameters of the vehicle meet the preset conditions if there is no cell failure in the battery system during the charging and discharging process; if the second simulated driving parameters meet the preset conditions, it is determined that the calibration of the power to be calibrated is completed.

[0042] In one embodiment, the system further comprises:

[0043] a thermal management device, the calibration device being communicatively connected to the thermal management device, and the thermal management device being connected to the battery system;

[0044] The calibration device is also used to control the thermal management device to perform temperature control on the battery system according to the target operating condition and the thermal management strategy corresponding to the battery status during the charging and discharging process of the battery system.

[0045] In one of the embodiments, the calibration device is further used to write the calibrated SOP data corresponding to the SOP data to be calibrated into the battery management system of the battery system.

[0046] In one embodiment, the battery state includes a target temperature and a target SOC, the system further includes an environmental container, the calibration device is communicatively connected to the environmental container, and the battery system is placed in the environmental container;

[0047] The calibration device is also used to adjust the current SOC of the battery system to the target SOC, and adjust the ambient temperature in the environmental container where the battery system is located to the target temperature.

[0048] In one of the embodiments, the calibration device is specifically used to obtain the estimated battery power according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

[0049] In a fourth aspect, the present application further provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the method described in the first aspect are implemented.

[0050] In a fifth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described in the first aspect are implemented.

[0051] In a sixth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the method described in the first aspect are implemented.

[0052] The above-mentioned calibration method, device, system, equipment, readable storage medium and program product obtain the SOP data to be calibrated of the battery system, and the SOP data to be calibrated includes the power to be calibrated corresponding to multiple different battery states, and the estimated battery power required for the vehicle to work under the target working conditions when the simulated battery system is loaded on the vehicle. Then, for each battery state, according to the estimated battery power and the allowable battery power of the battery system in the battery state, the power to be calibrated corresponding to the battery state is calibrated. In this way, the embodiment of the present application does not need to calibrate the SOP data through actual vehicle testing under a seasonal vehicle environment, but simulates the estimated battery power required for the vehicle to work under the target working conditions. According to the estimated battery power and the allowable battery power of the battery system, the power to be calibrated in the SOP data to be calibrated can be calibrated, thereby avoiding the problem of poor calibration flexibility caused by the inability to completely unify the calibration conditions during actual vehicle testing, the difficulty of seasonal calibration, the long calibration cycle, etc. in the related art. The embodiment of the present application improves the calibration flexibility of the SOP data. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 An application environment diagram of a calibration method in an embodiment;

[0055] Figure 2 A schematic diagram of a flow chart of a calibration method in an embodiment;

[0056] Figure 3 A schematic diagram of a calibration system according to another embodiment;

[0057] Figure 4 is a flow chart of step 203 in another embodiment;

[0058] Figure 5 is a flow chart of step 402 in another embodiment;

[0059] Figure 6 A schematic diagram of a calibration system according to another embodiment;

[0060] Figure 7 is a schematic flow chart of a calibration method in another embodiment;

[0061] Figure 8 is a structural block diagram of a calibration device in one embodiment;

[0062] Fig. 9 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0064] The SOP (State of Power) data of the battery system is a key parameter of the battery system. The SOP data is the SOP table. The SOP table of the battery system is usually converted according to the SOP table of the battery cell in the battery system (including the measured power data of the battery cell).

[0065] The measured power data of the battery cell is usually obtained by HPPC (Hybrid Pulse Power Characteristic) method or current test method. For example, the discharge power of the battery cell is tested for 10 seconds, and the discharge power SOP table of the battery cell is obtained, as shown in Table 1:

[0066] Table 1

[0067]

[0068] In Table 1, the horizontal direction is different battery cell SOC (State of Charge), and the vertical direction is different temperatures. A combination of SOC and temperature corresponds to a 10s discharge power. Usually, the battery cell will also have a 30s, 60s and continuous discharge power SOP table, and the feedback power SOP table is similar.

[0069] The SOP table of the battery system is usually converted from the SOP table of the battery cell (SOP table of the battery cell * grouping coefficient). Based on the discharge power SOP table of the battery cell shown in Table 1, the discharge power SOP table of the battery system for 10s is shown in Table 2:

[0070] Table 2

[0071]

[0072] As mentioned above, the SOP table of the battery system is tested at fixed time intervals (such as 10s, 30s, 60s, etc.), but this is quite different from the actual working conditions of the whole vehicle. Therefore, in order to ensure the accuracy of the SOP table of the battery system, the SOP table of the battery system will be seasonally calibrated at the vehicle level (summer calibration and winter calibration), and each power in the SOP table of the battery system is usually calibrated point by point through actual vehicle testing.

[0073] However, since the SOP test of the battery cell itself has certain deviations, and the calibration conditions cannot be completely unified during the actual vehicle test, and there is a lot of power data in the SOP table, the point-by-point calibration method of the SOP table will lead to problems such as difficulty in seasonal calibration and long calibration cycle. Therefore, the calibration flexibility is poor.

[0074] In view of this, embodiments of the present application provide a calibration method, apparatus, system, device, readable storage medium, and program product, which can enhance the calibration flexibility of the SOP data of a battery system.

[0075] The calibration method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown.

[0076] Among them, the calibration device 102 is connected to the battery system connection 104 through a high-voltage circuit and a low-voltage circuit. The calibration device 102 can be, but is not limited to, a server, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart car devices, projection devices, etc. Portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. The head-mounted device can be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc. The server can be an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services.

[0077] In an exemplary embodiment, Figure 2 As shown, a calibration method is provided, which is applied to Figure 1The calibration device 102 in the embodiment is taken as an example to illustrate, and the steps include the following steps 201 to 203. Among them:

[0078] Step 201, obtaining the SOP data to be calibrated of the battery system.

[0079] In an embodiment of the present application, the battery system may be a power battery system for a vehicle, and the vehicle may be an electric vehicle.

[0080] The SOP data to be calibrated can be an initial SOP table obtained by testing the battery system before leaving the factory, or a calibrated SOP table obtained by calibrating the initial SOP table of the battery system after the battery system leaves the factory, or an SOP table obtained after calibrating the calibrated SOP table once or multiple times, etc. No specific limitation is made to the SOP data to be calibrated.

[0081] In an embodiment of the present application, the SOP data to be calibrated includes the power to be calibrated corresponding to multiple different battery states. One battery state can represent a combination of an SOC and a temperature of the battery system. For example, refer to Table 2, SOC (5%) and temperature (T) 0°C are one battery state, SOC (10%) and temperature (T) 5°C are another battery state, and so on.

[0082] Optionally, the calibration device can obtain the SOP data to be calibrated input by the user; optionally, the calibration device can also read the SOP data to be calibrated from a preset storage location; optionally, the calibration device can also receive the SOP data to be calibrated sent by other devices. There is no limitation on the way in which the calibration device obtains the SOP data to be calibrated.

[0083] Optionally, after the calibration device obtains the SOP data to be calibrated, it can also flash the SOP data to be calibrated into the BMS (Battery Management System) circuit in the battery system through CAN (Controller Area Network) interaction to realize automatic flashing of SOP data.

[0084] Step 202 , simulating the estimated battery power required for the vehicle to operate under target operating conditions when the battery system is installed in the vehicle.

[0085] The estimated battery power required for the vehicle to operate under the target operating conditions refers to the power required by the battery system when the rated device simulates the battery system installed on the vehicle and the vehicle operates under the target operating conditions.

[0086] Exemplarily, the calibration device can obtain the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle. The operating condition parameters are used to characterize the target operating condition. For example, if the operating condition parameter is the 100 km / h acceleration parameter, then the target operating condition is characterized as 100 km / h acceleration. The vehicle parameters include the total vehicle mass, the windward area of ​​the vehicle, the rolling resistance coefficient of the vehicle and other vehicle parameters.

[0087] Next, the calibration device may obtain the above-mentioned estimated battery power according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

[0088] In a possible implementation, the calibration device may calculate the estimated battery power using a relevant formula.

[0089] Taking the target operating condition represented by the operating condition parameter as 100 km / h acceleration as an example, when the vehicle is actually driving, it will be affected by various resistances (including rolling resistance, air resistance, slope resistance and acceleration resistance). The sum of these resistances is called the total resistance. The calibration equipment can substitute the vehicle parameters into Formula 1 to calculate the total resistance of the vehicle:

[0090]

[0091] Among them, ∑F v is the total resistance, m v is the total mass of the vehicle, g is the acceleration due to gravity, and f v is the rolling resistance coefficient of the vehicle, α v is the ramp angle, C D is the air resistance coefficient, A V is the frontal area, v a is the vehicle speed, δ v is the vehicle's rotational mass conversion factor.

[0092] After the calibration equipment calculates the total resistance of the vehicle, it multiplies the total resistance by the vehicle's driving speed, and based on the multiplication result, obtains the estimated battery power required for the vehicle to operate under the target operating conditions.

[0093] In another possible implementation, the calibration device may also input the operating condition parameters and vehicle parameters of the vehicle into a pre-trained power prediction model to obtain the estimated battery power required for the vehicle to operate under the target operating conditions. No specific restrictions are imposed on the manner in which the calibration device obtains the estimated battery power.

[0094] Step 203 , for each battery state, calibrate the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system in the battery state.

[0095] In the embodiment of the present application, the calibration device calibrates each power to be calibrated in the SOP data to be calibrated point by point.

[0096] For each power to be calibrated in the SOP data to be calibrated, before calibration, the calibration equipment first needs to adjust the battery system to the battery state corresponding to the power to be calibrated. The battery state refers to the temperature and SOC corresponding to the power to be calibrated in the SOP data to be calibrated. It is assumed that the battery state includes the target temperature and target SOC.

[0097] Exemplarily, the calibration device may perform charge and discharge processing on the battery system, thereby adjusting the current SOC of the battery system to the target SOC included in the battery state.

[0098] For example, see Figure 3 In the embodiment of the present application, the calibration device is also connected to the environmental container (or high and low temperature environmental chamber) by communication, for example, through a low voltage communication connection, and the battery system is placed in the environmental container, and the environmental container can simulate different environmental temperatures when the battery system works under the target working conditions (that is, when the battery system is loaded on the vehicle, the whole vehicle works under the target working conditions). In this way, the calibration device can adjust the ambient temperature in the environmental container where the battery system is located to the target temperature.

[0099] Through the above method, the calibration device adjusts the battery system to the battery state corresponding to the power to be calibrated.

[0100] The calibration device obtains the allowed battery power of the battery system under the battery state. Exemplarily, the calibration device may be communicatively connected with a BMS circuit in the battery system, and the calibration device may receive the allowed battery power sent on the CAN bus of the BMS circuit.

[0101] Then, the calibration device calibrates the power to be calibrated according to the estimated battery power and the allowed battery power.

[0102] In a possible implementation, the calibration device may send the estimated battery power and the allowed battery power to other devices, and the other devices may calibrate the power to be calibrated according to the estimated battery power and the allowed battery power.

[0103] In another possible implementation, the calibration device may also calibrate the power to be calibrated according to the estimated battery power and the allowed battery power. The manner in which the calibration device calibrates the power to be calibrated according to the estimated battery power and the allowed battery power will be exemplarily described in the following embodiments.

[0104] The above-mentioned embodiment obtains the SOP data to be calibrated of the battery system, and the SOP data to be calibrated includes the power to be calibrated corresponding to multiple different battery states, and simulates the estimated battery power required for the vehicle to work under the target working conditions when the battery system is loaded on the vehicle. Then, for each battery state, the power to be calibrated corresponding to the battery state is calibrated according to the estimated battery power and the allowable battery power of the battery system in the battery state. In this way, the embodiment of the present application does not need to calibrate the SOP data through actual vehicle testing under a seasonal vehicle environment, but simulates the estimated battery power required for the vehicle to work under the target working conditions. According to the estimated battery power and the allowable battery power of the battery system, the power to be calibrated in the SOP data to be calibrated can be calibrated, thereby avoiding the problem of poor calibration flexibility caused by the inability to completely unify the calibration conditions during actual vehicle testing, large calibration differences, high seasonal calibration difficulty, long calibration cycle, etc. in the related art. The embodiment of the present application improves the calibration flexibility of the SOP data.

[0105] In one embodiment, based on Figure 2 In the embodiment shown, the following is an exemplary introduction to the process in which the calibration device calibrates the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state. Figure 4 , step 203 may include Figure 4 Step 401 and step 402 shown:

[0106] Step 401 : determining the minimum power from the estimated battery power and the allowed battery power.

[0107] As mentioned above, the estimated battery power refers to the power required by the battery system to be provided when the calibration device simulates the battery system being loaded on the vehicle and the vehicle is operating under the target operating conditions. It is understandable that the estimated battery power may be greater than the allowable battery power of the battery system under the above battery state (i.e., the maximum battery power allowed to be output by the battery system). Therefore, the calibration device needs to determine a suitable power value based on the estimated battery power and the allowable battery power.

[0108] As an implementation mode, the calibration device determines which of the estimated battery power and the allowed battery power is smaller. If the estimated battery power is less than the allowed battery power, it indicates that the battery system can meet the estimated battery power. Therefore, the power to be calibrated is calibrated according to the estimated battery power (taking the estimated battery power as the minimum power).

[0109] If the estimated battery power is greater than the allowed battery power, it indicates that the battery system cannot meet the estimated battery power. Therefore, the calibrated power is calibrated according to the allowed battery power (taking the allowed battery power as the minimum power) to meet the vehicle needs to the greatest extent.

[0110] Step 402: calibrate the power to be calibrated according to the minimum power.

[0111] After the calibration device determines the minimum power in the above manner, it calibrates the power to be calibrated according to the minimum power. In the following, the process of calibrating the power to be calibrated according to the minimum power by the calibration device is exemplarily described in several cases.

[0112] See also Figure 5 , step 402 may include Figure 5 Step 501 and step 502 are shown:

[0113] Step 501, charging and discharging the battery system according to the minimum power.

[0114] In the embodiment of the present application, the calibration device can simulate the discharge and recharge process of the vehicle under target operating conditions when the battery system is installed in the vehicle.

[0115] Exemplarily, if the SOP data to be calibrated is the discharge SOP data of the battery system, the calibration device discharges the battery system at the minimum power.

[0116] If the SOP data to be calibrated is the charging SOP data of the battery system, the calibration device charges the battery system according to the minimum power.

[0117] Step 502: If a cell failure occurs in the battery system during the charge and discharge process, the power to be calibrated is reduced to a preset power. The cell failure includes a cell undervoltage failure or a cell overvoltage failure.

[0118] In one possible implementation, a battery system may have a cell failure during the charging and discharging process. For example, taking the calibration device discharging the battery system at the minimum power as an example, a battery system may have a cell undervoltage failure. In this case, it is necessary to reduce the power to be calibrated, that is, undervoltage power reduction processing. The calibration device reduces the power to be calibrated to the first preset power in the SOP data to be calibrated, thereby avoiding a cell undervoltage failure during actual operation of the battery system.

[0119] Similarly, taking the calibration device charging the battery system at the minimum power as an example, the battery system may have a cell overvoltage fault. In this case, it is also necessary to reduce the power to be calibrated, that is, overvoltage power reduction processing. The calibration device reduces the power to be calibrated to the second preset power in the SOP data to be calibrated, thereby avoiding cell overvoltage faults during actual operation of the battery system.

[0120] Optionally, if a cell failure occurs in the battery system during the charging and discharging process, the calibration device may also mark the power to be calibrated as abnormal data in the SOP data to be calibrated.

[0121] Further, in order to improve the accuracy of the preset power after calibration, please continue to refer to Figure 5 After step 502, step 402 in the embodiment of the present application may further include steps 503 to 505:

[0122] Step 503: re-charge and discharge the battery system according to the preset power.

[0123] After the calibration equipment calibrates the power to be calibrated to the preset power, it performs a secondary calibration on the preset power, that is, re-charges and discharges the battery system according to the preset power.

[0124] The process of the calibration device recharging and discharging the battery system according to the preset power is similar to the implementation of step 501 and will not be repeated here.

[0125] Step 504 , if there is no cell failure in the battery system during the charging and discharging process, determine whether the first simulated driving parameter of the vehicle meets a preset condition.

[0126] During the process of recharging and discharging the battery system according to the preset power, the calibration equipment detects whether there is a cell failure in the battery system. If there is a cell failure in the battery system, the calibration equipment reduces the preset power again and recalibrates the reduced preset power, and so on.

[0127] If there is no cell failure in the battery system during the charging and discharging process, the calibration device in the embodiment of the present application determines whether the first simulated driving parameter of the vehicle meets the preset conditions.

[0128] It can be understood that the above process of calibrating the power to be calibrated (reducing the power to be calibrated to the preset power) is calibrated based on the estimated battery power and the minimum power of the allowed battery power, but the minimum power may not be able to meet the requirements of the whole vehicle. For example, it cannot meet the requirements of the vehicle's power performance and driving smoothness. In order to avoid this phenomenon, the calibration equipment needs to detect whether the first simulated driving parameters of the vehicle meet the preset conditions.

[0129] Among them, the first simulated driving parameter can be the current simulated driving curve of the vehicle, and the simulated driving curve can include the simulated speed curve and acceleration curve of the vehicle. The calibration equipment determines whether it meets the preset conditions based on the simulated driving curve. The preset conditions can be set by itself during implementation to confirm whether the first simulated driving parameter can meet the requirements of the whole vehicle (such as the whole vehicle power requirements, driving smoothness requirements, etc.).

[0130] Optionally, the calibration device may also output the first simulated driving parameter, and the user may determine whether the first simulated driving parameter meets the requirement (preset condition), and receive the determination result input by the user.

[0131] Step 505: If the first simulation driving parameter meets the preset condition, it is determined that the preset power calibration is completed.

[0132] If the first simulated driving parameter meets the preset conditions, it indicates that the first simulated driving parameter meets the requirements of the whole vehicle. The calibration equipment marks the preset power calibration completed in the SOP data to be calibrated, and continues to calibrate other powers to be calibrated in the SOP data to be calibrated until the calibration of each power to be calibrated in the SOP data to be calibrated is completed.

[0133] Please continue to see Figure 5 In another possible implementation, after step 501, step 402 of the embodiment of the present application may further include steps 506 and 507:

[0134] Step 506: If there is no cell failure in the battery system during the charging and discharging process, determine whether the second simulation driving parameter of the vehicle meets the preset conditions.

[0135] If there is no cell failure in the battery system during the charging and discharging process, it indicates that there is no need to reduce the power to be calibrated, and the calibration device directly determines whether the current second simulation driving parameter of the vehicle meets the preset conditions.

[0136] The way in which the calibration device determines whether the second simulated driving parameter of the vehicle meets the preset conditions is similar to the implementation of step 504 and will not be repeated here.

[0137] Step 507: If the second simulation driving parameter meets the preset condition, it is determined that the calibration of the power to be calibrated is completed.

[0138] If the second simulated driving parameters meet the preset conditions, it indicates that the second simulated driving parameters meet the requirements of the whole vehicle. The calibration equipment marks the calibration of the power to be calibrated in the SOP data to be calibrated as completed, and continues to calibrate other powers to be calibrated in the SOP data to be calibrated until the calibration of each power to be calibrated in the SOP data to be calibrated is completed.

[0139] After the calibration of each power to be calibrated in the SOP data to be calibrated is completed, the calibration equipment can also flash the calibrated SOP data corresponding to the SOP data to be calibrated into the battery management system of the battery system, so as to realize automatic flashing of SOP data, so that the battery management system can control the power of the battery system based on the latest SOP data.

[0140] In one embodiment, see Figure 6 The calibration equipment is also connected to the thermal management device (via a low voltage communication connection), and the thermal management device is connected to the battery system. Figure 5In the illustrated embodiment, during the charging and discharging process of the battery system, the control device may also control the thermal management device to perform temperature control on the battery system according to the thermal management strategy corresponding to the target operating condition and the battery status.

[0141] The thermal management device can perform thermal management on the battery system according to the set thermal management strategy to simulate the thermal management of the battery system under the target operating conditions.

[0142] Optionally, the thermal management device can be a water-cooled thermal management device, which can be connected to the battery system through a water pipe. In this way, the thermal management device can control the coolant flow and temperature according to the set water-cooled thermal management strategy to simulate the thermal management of the battery system for the whole vehicle under the target operating conditions; optionally, the thermal management device can also be a direct-cooled thermal management device, which can simulate the thermal management of the battery system for the whole vehicle under the target operating conditions according to the set direct-cooling thermal management strategy, or the thermal management device can also be an air-cooled thermal management device, which can simulate the thermal management of the battery system for the whole vehicle under the target operating conditions according to the set air-cooling thermal management strategy, and so on. The thermal management method is not specifically limited here and can be flexibly selected during implementation.

[0143] In this way, the thermal management device simulates the thermal management of the battery system under the target operating conditions, making the calibration environment closer to the actual operating environment, which is conducive to improving the calibration accuracy.

[0144] The calibration equipment of the embodiment of the present application integrates the simulation of vehicle operating conditions (such as target operating conditions), system control, automatic writing and correction of parameters (SOP data), acceptance and confirmation of the actual operating conditions of the vehicle, and charging and discharging functions, and integrates the thermal management and external environment of the vehicle, with a high degree of integration.

[0145] The embodiment of the present application can simulate the rationality of the SOP data of the battery system under different ambient temperatures and working conditions in the whole vehicle state, and can automatically correct the SOP data until the preset conditions (such as battery performance and vehicle requirements) are met. The calibration process is more accurate and easier to control.

[0146] The calibration method provided in the embodiment of the present application can replace the seasonal calibration of the whole vehicle, and transplant the calibration of the SOP data of the battery system from the seasonal calibration of the whole vehicle (or the environmental chamber of the whole vehicle) to the single package (i.e., a single battery system) laboratory for verification and calibration, thereby shortening the development cycle of the battery system and the whole vehicle. It avoids the problems that the whole vehicle calibration conditions cannot be guaranteed to be completely unified, the seasonal calibration workload is large, and the cycle is long, which exist in the seasonal calibration method of the traditional technology. The embodiment of the present application can ensure that the ambient temperature is strictly controllable, the calibration conditions are unified, and the operation results of the whole vehicle are intuitively displayed. The SOP data can be automatically corrected and then automatically calibrated a second time, which improves the data accuracy of the SOP data.

[0147] In one embodiment, a calibration method is provided for Figure 1 In the calibration device 102 shown, see Figure 7 , including the following steps:

[0148] Step 701, obtaining the SOP data to be calibrated of the battery system, where the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states.

[0149] Step 702 , obtaining estimated battery power according to operating condition parameters corresponding to the target operating condition and vehicle parameters of the vehicle.

[0150] Step 703 , for each battery state, adjusting the current SOC of the battery system to the target SOC, and adjusting the ambient temperature in the environmental container where the battery system is located to the target temperature.

[0151] Step 704 , determining the minimum power from the estimated battery power and the allowed battery power, and performing charge and discharge processing on the battery system according to the minimum power.

[0152] Step 705: if a cell failure occurs in the battery system during the charge and discharge process, the power to be calibrated is reduced to a preset power. The cell failure includes a cell undervoltage failure or a cell overvoltage failure.

[0153] Step 706, re-charge and discharge the battery system according to the preset power. If there is no cell failure in the battery system during the charging and discharging process, determine whether the first simulated driving parameter of the vehicle meets the preset conditions; if the first simulated driving parameter meets the preset conditions, determine that the preset power calibration is completed.

[0154] Step 707, if there is no cell failure in the battery system during the charging and discharging process, determine whether the second simulated driving parameter of the vehicle meets the preset conditions; if the second simulated driving parameter meets the preset conditions, determine that the calibration of the power to be calibrated is completed.

[0155] The calibrated SOP data corresponding to the SOP data to be calibrated is written into the battery management system of the battery system.

[0156] Among them, during the charging and discharging process of the battery system, the thermal management device is controlled to control the temperature of the battery system according to the thermal management strategy corresponding to the target operating condition and the battery status.

[0157] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0158] Based on the same inventive concept, the embodiment of the present application also provides a calibration device for implementing the calibration method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more calibration device embodiments provided below can refer to the limitations on the calibration method above, and will not be repeated here.

[0159] In an exemplary embodiment, Figure 8 As shown, a calibration device is provided, comprising:

[0160] An acquisition module 801 is used to acquire the SOP data to be calibrated of the battery system, where the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states;

[0161] A simulation module 802 is used to simulate the estimated battery power required for the vehicle to operate under target operating conditions when the battery system is installed in the vehicle;

[0162] The calibration module 803 is used to calibrate the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system in the battery state for each battery state.

[0163] In one embodiment, the calibration module 803 includes:

[0164] a determining unit, configured to determine a minimum power from the estimated battery power and the allowed battery power;

[0165] A calibration unit is used to calibrate the power to be calibrated according to the minimum power.

[0166] In one of the embodiments, the calibration unit is specifically used to charge and discharge the battery system according to the minimum power; if a cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power, and the cell failure includes a cell undervoltage failure or a cell overvoltage failure.

[0167] In one of the embodiments, the calibration unit is also used to re-charge and discharge the battery system according to the preset power; if there is no cell failure in the battery system during the charging and discharging process, it is determined whether the first simulation driving parameter of the vehicle meets the preset conditions; if the first simulation driving parameter meets the preset conditions, it is determined that the preset power calibration is completed.

[0168] In one of the embodiments, the calibration unit is also used to determine whether the second simulated driving parameters of the vehicle meet the preset conditions if there is no cell failure in the battery system during the charging and discharging process; if the second simulated driving parameters meet the preset conditions, it is determined that the calibration of the power to be calibrated is completed.

[0169] In one embodiment, the device further comprises:

[0170] The control module is used to control the thermal management device to control the temperature of the battery system according to the thermal management strategy corresponding to the target operating condition and the battery state during the charging and discharging process of the battery system.

[0171] In one embodiment, the device further comprises:

[0172] The flash writing module is used to flash the calibrated SOP data corresponding to the SOP data to be calibrated into the battery management system of the battery system.

[0173] In one embodiment, the battery state includes a target temperature and a target SOC, and the device further includes:

[0174] The adjustment module is used to adjust the current SOC of the battery system to the target SOC, and adjust the ambient temperature in the environmental container where the battery system is located to the target temperature.

[0175] In one embodiment, the simulation module 802 is specifically configured to obtain the estimated battery power according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

[0176] Each module in the above calibration device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of the processor in the calibration device in the form of hardware, or can be stored in the memory in the calibration device in the form of software, so that the processor can call and execute the operations corresponding to each module.

[0177] Based on the same inventive concept, the embodiment of the present application also provides a calibration system for implementing the calibration method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more calibration system embodiments provided below can refer to the limitations on the calibration method above, and will not be repeated here.

[0178] In one embodiment, a calibration system is provided, comprising:

[0179] Calibration equipment, which is used to connect to the battery system through high-voltage circuit and low-voltage circuit.

[0180] Among them, the calibration equipment is used to obtain the SOP data to be calibrated of the battery system, and the SOP data to be calibrated includes the power to be calibrated corresponding to multiple different battery states; when the simulated battery system is loaded on the vehicle, the estimated battery power required for the vehicle to work under the target working conditions; for each battery state, the power to be calibrated corresponding to the battery state is calibrated according to the estimated battery power and the allowable battery power of the battery system in the battery state.

[0181] In one of the embodiments, the calibration device is specifically used to determine the minimum power from the estimated battery power and the allowed battery power, and calibrate the power to be calibrated according to the minimum power.

[0182] In one of the embodiments, the calibration device is specifically used to charge and discharge the battery system according to the minimum power. If a battery cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power. The battery cell failure includes a battery cell undervoltage failure or a battery cell overvoltage failure.

[0183] In one of the embodiments, the calibration device is also used to re-charge and discharge the battery system according to a preset power. If there is no cell failure in the battery system during the charging and discharging process, it is determined whether the first simulated driving parameters of the vehicle meet the preset conditions. If the first simulated driving parameters meet the preset conditions, it is determined that the preset power calibration is completed.

[0184] In one of the embodiments, the calibration device is also used to determine whether the second simulated driving parameters of the vehicle meet the preset conditions if there is no cell failure in the battery system during the charging and discharging process. If the second simulated driving parameters meet the preset conditions, it is determined that the calibration of the power to be calibrated is completed.

[0185] In one embodiment, the system further comprises:

[0186] A thermal management device, wherein the calibration device is communicatively connected to the thermal management device, and the thermal management device is connected to the battery system;

[0187] The calibration equipment is also used to control the thermal management device to control the temperature of the battery system according to the thermal management strategy corresponding to the target operating conditions and battery status during the charging and discharging process of the battery system.

[0188] In one of the embodiments, the calibration device is further used to write the calibrated SOP data corresponding to the SOP data to be calibrated into the battery management system of the battery system.

[0189] In one embodiment, the battery state includes a target temperature and a target SOC, the system further includes an environmental container, the calibration device is communicatively connected to the environmental container, and the battery system is placed in the environmental container;

[0190] The calibration device is also used to adjust the current SOC of the battery system to a target SOC, and to adjust the ambient temperature in the environmental container where the battery system is located to a target temperature.

[0191] In one of the embodiments, the calibration device is specifically used to obtain the estimated battery power according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

[0192] In an exemplary embodiment, a computer device is provided. The computer device may be a calibration device, and its internal structure diagram may be as shown in FIG. Fig. 9 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device 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 internal 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 XX data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication 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, a calibration method is implemented.

[0193] Those skilled in the art will understand that Fig. 9The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0194] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0195] Acquire the SOP data to be calibrated of the battery system, wherein the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states;

[0196] simulating an estimated battery power required for the vehicle to operate under target operating conditions when the battery system is installed in the vehicle;

[0197] For each of the battery states, the power to be calibrated corresponding to the battery state is calibrated according to the estimated battery power and the allowable battery power of the battery system under the battery state.

[0198] In one embodiment, when the processor executes the computer program, the following steps are specifically implemented:

[0199] determining a minimum power from the estimated battery power and the allowed battery power;

[0200] The power to be calibrated is calibrated according to the minimum power.

[0201] In one embodiment, when the processor executes the computer program, the following steps are specifically implemented:

[0202] Performing charging and discharging processing on the battery system according to the minimum power;

[0203] If a cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power, and the cell failure includes a cell undervoltage failure or a cell overvoltage failure.

[0204] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0205] Re-charging and discharging the battery system according to the preset power;

[0206] If there is no cell failure in the battery system during the charging and discharging process, determining whether the first simulation driving parameter of the vehicle meets a preset condition;

[0207] If the first simulation driving parameter meets the preset condition, it is determined that the preset power calibration is completed.

[0208] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0209] If there is no cell failure in the battery system during the charging and discharging process, determining whether the second simulation driving parameter of the vehicle meets a preset condition;

[0210] If the second simulation driving parameter meets the preset condition, it is determined that the calibration of the power to be calibrated is completed.

[0211] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0212] During the charging and discharging process of the battery system, the thermal management device is controlled to control the temperature of the battery system according to the target operating condition and the thermal management strategy corresponding to the battery state.

[0213] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0214] The calibrated SOP data corresponding to the SOP data to be calibrated is written into the battery management system of the battery system.

[0215] In one embodiment, the battery state includes a target temperature and a target SOC, and the processor further implements the following steps when executing the computer program:

[0216] The current SOC of the battery system is adjusted to the target SOC, and the ambient temperature in the environmental container where the battery system is located is adjusted to the target temperature.

[0217] In one embodiment, when the processor executes the computer program, the following steps are specifically implemented:

[0218] The estimated battery power is obtained according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

[0219] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0220] Acquire the SOP data to be calibrated of the battery system, wherein the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states;

[0221] simulating an estimated battery power required for the vehicle to operate under target operating conditions when the battery system is installed in the vehicle;

[0222] For each of the battery states, the power to be calibrated corresponding to the battery state is calibrated according to the estimated battery power and the allowable battery power of the battery system under the battery state.

[0223] In one embodiment, when the computer program is executed by a processor, the following steps are specifically implemented:

[0224] determining a minimum power from the estimated battery power and the allowed battery power;

[0225] The power to be calibrated is calibrated according to the minimum power.

[0226] In one embodiment, when the computer program is executed by a processor, the following steps are specifically implemented:

[0227] Performing charging and discharging processing on the battery system according to the minimum power;

[0228] If a cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power, and the cell failure includes a cell undervoltage failure or a cell overvoltage failure.

[0229] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0230] Re-charging and discharging the battery system according to the preset power;

[0231] If there is no cell failure in the battery system during the charging and discharging process, determining whether the first simulation driving parameter of the vehicle meets a preset condition;

[0232] If the first simulation driving parameter meets the preset condition, it is determined that the preset power calibration is completed.

[0233] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0234] If there is no cell failure in the battery system during the charging and discharging process, determining whether the second simulation driving parameter of the vehicle meets a preset condition;

[0235] If the second simulation driving parameter meets the preset condition, it is determined that the calibration of the power to be calibrated is completed.

[0236] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0237] During the charging and discharging process of the battery system, the thermal management device is controlled to control the temperature of the battery system according to the target operating condition and the thermal management strategy corresponding to the battery state.

[0238] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0239] The calibrated SOP data corresponding to the SOP data to be calibrated is written into the battery management system of the battery system.

[0240] In one embodiment, the battery state includes a target temperature and a target SOC, and when the computer program is executed by the processor, the following steps are further implemented:

[0241] The current SOC of the battery system is adjusted to the target SOC, and the ambient temperature in the environmental container where the battery system is located is adjusted to the target temperature.

[0242] In one embodiment, when the computer program is executed by a processor, the following steps are specifically implemented:

[0243] The estimated battery power is obtained according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

[0244] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0245] Acquire the SOP data to be calibrated of the battery system, wherein the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states;

[0246] simulating an estimated battery power required for the vehicle to operate under target operating conditions when the battery system is installed in the vehicle;

[0247] For each of the battery states, the power to be calibrated corresponding to the battery state is calibrated according to the estimated battery power and the allowable battery power of the battery system under the battery state.

[0248] In one embodiment, when the computer program is executed by a processor, the following steps are specifically implemented:

[0249] determining a minimum power from the estimated battery power and the allowed battery power;

[0250] The power to be calibrated is calibrated according to the minimum power.

[0251] In one embodiment, when the computer program is executed by a processor, the following steps are specifically implemented:

[0252] Performing charging and discharging processing on the battery system according to the minimum power;

[0253] If a cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power, and the cell failure includes a cell undervoltage failure or a cell overvoltage failure.

[0254] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0255] Re-charging and discharging the battery system according to the preset power;

[0256] If there is no cell failure in the battery system during the charging and discharging process, determining whether the first simulation driving parameter of the vehicle meets a preset condition;

[0257] If the first simulation driving parameter meets the preset condition, it is determined that the preset power calibration is completed.

[0258] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0259] If there is no cell failure in the battery system during the charging and discharging process, determining whether the second simulation driving parameter of the vehicle meets a preset condition;

[0260] If the second simulation driving parameter meets the preset condition, it is determined that the calibration of the power to be calibrated is completed.

[0261] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0262] During the charging and discharging process of the battery system, the thermal management device is controlled to control the temperature of the battery system according to the target operating condition and the thermal management strategy corresponding to the battery state.

[0263] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0264] The calibrated SOP data corresponding to the SOP data to be calibrated is written into the battery management system of the battery system.

[0265] In one embodiment, the battery state includes a target temperature and a target SOC, and when the computer program is executed by the processor, the following steps are further implemented:

[0266] The current SOC of the battery system is adjusted to the target SOC, and the ambient temperature in the environmental container where the battery system is located is adjusted to the target temperature.

[0267] In one embodiment, when the computer program is executed by a processor, the following steps are specifically implemented:

[0268] The estimated battery power is obtained according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

[0269] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0270] 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 the relevant 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 the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0271] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0272] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A calibration method, It is characterized in that include: Acquire the SOP data to be calibrated of the battery system, wherein the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states; simulating an estimated battery power required for the vehicle to operate under target operating conditions when the battery system is installed in the vehicle; For each of the battery states, the power to be calibrated corresponding to the battery state is calibrated according to the estimated battery power and the allowable battery power of the battery system under the battery state.

2. The method according to claim 1, It is characterized in that The calibrating the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state includes: determining a minimum power from the estimated battery power and the allowed battery power; The power to be calibrated is calibrated according to the minimum power.

3. The method according to claim 2, It is characterized in that The step of calibrating the power to be calibrated according to the minimum power includes: Performing charging and discharging processing on the battery system according to the minimum power; If a cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power, and the cell failure includes a cell undervoltage failure or a cell overvoltage failure.

4. The method according to claim 3, It is characterized in that The method further comprises: Re-charging and discharging the battery system according to the preset power; If there is no cell failure in the battery system during the charging and discharging process, determining whether the first simulation driving parameter of the vehicle meets a preset condition; If the first simulation driving parameter meets the preset condition, it is determined that the preset power calibration is completed.

5. The method according to claim 3, It is characterized in that The method further comprises: If there is no cell failure in the battery system during the charging and discharging process, determining whether the second simulation driving parameter of the vehicle meets a preset condition; If the second simulation driving parameter meets the preset condition, it is determined that the calibration of the power to be calibrated is completed.

6. The method according to any one of claims 3 to 5, It is characterized in that The method further comprises: During the charging and discharging process of the battery system, the thermal management device is controlled to control the temperature of the battery system according to the target operating condition and the thermal management strategy corresponding to the battery state.

7. The method according to claim 1, It is characterized in that The method further comprises: The calibrated SOP data corresponding to the SOP data to be calibrated is written into the battery management system of the battery system.

8. The method according to claim 1, It is characterized in that The battery state includes a target temperature and a target SOC. Before calibrating the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state, the method further includes: The current SOC of the battery system is adjusted to the target SOC, and the ambient temperature in the environmental container where the battery system is located is adjusted to the target temperature.

9. The method according to claim 1 or 8, It is characterized in that The simulating of estimating the battery power required for the vehicle to operate under a target operating condition when the battery system is installed in the vehicle includes: The estimated battery power is obtained according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

10. A calibration device, It is characterized in that include: An acquisition module is used to acquire the SOP data to be calibrated of the battery system, wherein the SOP data to be calibrated includes the power to be calibrated corresponding to a plurality of different battery states; A simulation module, used to simulate the estimated battery power required for the vehicle to operate under target conditions when the battery system is installed in the vehicle; The calibration module is used to calibrate the power to be calibrated corresponding to each battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state.

11. A calibration system, It is characterized in that include: A calibration device, the calibration device is used to connect to the battery system through a high-voltage circuit and a low-voltage circuit, Among them, the calibration equipment is used to obtain the SOP data to be calibrated of the battery system, and the SOP data to be calibrated includes the powers to be calibrated corresponding to multiple different battery states; simulating the estimated battery power required for the vehicle to operate under the target working conditions when the battery system is loaded on the vehicle; for each battery state, calibrating the power to be calibrated corresponding to the battery state according to the estimated battery power and the allowable battery power of the battery system under the battery state.

12. The system according to claim 11, It is characterized in that The calibration device is specifically used to determine the minimum power from the estimated battery power and the allowed battery power, and calibrate the power to be calibrated according to the minimum power.

13. The system according to claim 12, It is characterized in that The calibration device is specifically used to charge and discharge the battery system according to the minimum power. If a cell failure occurs in the battery system during the charging and discharging process, the power to be calibrated is reduced to a preset power. The cell failure includes a cell undervoltage failure or a cell overvoltage failure.

14. The system according to claim 13, It is characterized in that The calibration device is also used to re-charge and discharge the battery system according to the preset power. If there is no cell failure in the battery system during the charging and discharging process, it is determined whether the first simulated driving parameter of the vehicle meets the preset conditions. If the first simulated driving parameter meets the preset conditions, it is determined that the preset power calibration is completed.

15. The system according to claim 13, It is characterized in that The calibration device is also used to determine whether the second simulated driving parameters of the vehicle meet the preset conditions if there is no cell failure in the battery system during the charging and discharging process. If the second simulated driving parameters meet the preset conditions, it is determined that the calibration of the power to be calibrated is completed.

16. The system according to any one of claims 13 to 15, It is characterized in that The system further comprises: a thermal management device, the calibration device being communicatively connected to the thermal management device, and the thermal management device being connected to the battery system; The calibration device is also used to control the thermal management device to perform temperature control on the battery system according to the target operating condition and the thermal management strategy corresponding to the battery status during the charging and discharging process of the battery system.

17. The system according to claim 11, It is characterized in that The calibration device is also used to write the calibrated SOP data corresponding to the SOP data to be calibrated into the battery management system of the battery system.

18. The system according to claim 11, It is characterized in that The battery state includes a target temperature and a target SOC, the system further includes an environmental container, the calibration device is communicatively connected to the environmental container, and the battery system is placed in the environmental container; The calibration device is also used to adjust the current SOC of the battery system to the target SOC, and adjust the ambient temperature in the environmental container where the battery system is located to the target temperature.

19. The system according to claim 11 or 18, It is characterized in that The calibration device is specifically used to obtain the estimated battery power according to the operating condition parameters corresponding to the target operating condition and the vehicle parameters of the vehicle.

20. A computer device comprising a memory and a processor, wherein the memory stores a computer program. It is characterized in that When the processor executes the computer program, the steps of the method according to any one of claims 1 to 9 are implemented.

21. A computer-readable storage medium having a computer program stored thereon, It is 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 9 are implemented.

22. A computer program product comprising a computer program, It is 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 9 are implemented.

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