A method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply

Abstract

The present invention discloses a method for implementing the uninterrupted conversion of the same type of work step current of a battery detection power supply, which relates to the field of battery detection technology, including step one, receiving a process instruction, starting the process automatically, and waiting for the execution of the work step conversion; step two, judging whether the work step conversion process is normal, if the process is abnormal, stopping the process, and if the process is normal, continuing the process; step three, performing inspection sampling on the actual output data of the circuit through ADC, and comparing the actual output data with the preset threshold data; step four, after the end of the work step conversion process, judging whether the current work step state is consistent with the next work step state, and performing subsequent processes based on the judgment result. The present invention ensures that the current remains stable during the work step conversion process by dividing and dynamically adjusting the current through multiple stages, avoiding sudden changes or fluctuations in the current, and collecting feedback data such as current, voltage, and temperature in real time, and adjusting in stages according to the current error.

Description

Technical Field

[0001] The present invention relates to the technical field of battery detection, in particular to a method for implementing uninterrupted conversion of currents in the same working steps of a battery detection power supply. Background Art

[0002] When testing a battery, the power supply switches between different test phases. During the battery testing process, different steps are often used to simulate different working states of the battery, such as charging and discharging, constant current, and constant voltage. Each step has different parameters set, such as voltage, current, duration, etc., and the process of switching from one test step to the next. In order to simulate the actual working state of the battery, the test equipment needs to accurately control the timing and method of switching from one mode to another. During the step conversion process, the power supply needs to be adjusted accordingly according to the test requirements.

[0003] After searching, a Chinese patent (publication number: CN111245001A) discloses a method for suppressing DC continuous commutation failure based on additional current control. This patent first collects system operation data including the effective value of the inverter-side commutation bus voltage and the rectifier-side current set value after detecting the system commutation failure, and calculates the additional current set value based on the reactive power supply and demand status of the system; finally, the additional current set value is compared with the current set value given by the low-voltage line current link to obtain the final rectifier-side current set value.

[0004] In the prior art, in order to ensure the performance of the formation battery, the current must be continuous when the same type of process steps are switched. However, during the process of process step switching, the battery detection power supply first stops the current of the previous process step and then establishes the current of the next process step. At this time, it will cause a certain degree of impact on the integrity of the SEI film of the formation battery, thereby affecting the cycle performance and safety performance of the battery. Therefore, the present invention proposes a method for implementing uninterrupted conversion of the same type of process step current of the battery detection power supply. Summary of the invention

[0005] The purpose of the present invention is to provide a method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply to solve the problems mentioned in the above background technology.

[0006] The present invention can be implemented by the following technical solution: a method for implementing uninterrupted conversion of the same type of working step current of a battery detection power supply, the method comprising the following steps:

[0007] Step 1: Receive process instructions, start the process automatically, and wait for the execution of work step conversion;

[0008] Step 2: Determine whether the work step conversion process is normal. If the process is abnormal, stop the process. If the process is normal, continue to execute the process.

[0009] Step 3: perform inspection sampling on the actual output data of the circuit, and compare the actual output data with the preset threshold data;

[0010] If the actual output data exceeds the preset threshold data range, it is judged as data abnormality and the process stops;

[0011] If the actual output data is within the preset threshold data range, the actual output data of the current stage is collected, the current error is calculated, and the current is adjusted in a multi-stage manner until the corresponding step conversion condition is reached;

[0012] Step 4: After the work step conversion process is completed, determine whether the current work step status is consistent with the next work step status, and proceed with the subsequent process based on the judgment result.

[0013] A further technical improvement of the present invention is that the subsequent process includes:

[0014] The current work step status is consistent with the next work step status, obtain the next work step information, and continue the work step conversion;

[0015] If the current working step status is inconsistent with the next working step status, the main circuit output is stopped, the next working step information is obtained, and the process is executed from step 2.

[0016] A further technical improvement of the present invention is that the current adjustment process includes the following steps:

[0017] P1: Set the process step, mark the process steps of the same type, and calculate the conversion difference data between the synchronous type process step currents based on the preset process step conversion current;

[0018] P2: Divide each difference data into multiple stages, and match the corresponding conversion difference data with the number of stages to obtain the preset threshold data of each conversion stage;

[0019] P3: Carry out each conversion stage in the process step in turn, and compare the preset threshold data and the actual output data of each conversion stage in real time to obtain the stage comparison data, and adjust the current variable of the next stage based on the stage comparison data to ensure that the current remains stable and avoids sudden changes or fluctuations.

[0020] A further technical improvement of the present invention is that the method for adjusting the current variable in the next stage comprises the following steps:

[0021] S1. Collect the actual output data of the current stage, including current ,Voltage ,temperature , calculate the current in the preset threshold data of the corresponding stage , voltage difference ;

[0022] S2. Calculate the current error at the current stage , and calculate the resistance change according to the voltage and temperature at the current stage ;

[0023] in, is the temperature of the current stage, is the reference temperature, which is the initial value of the resistance at the corresponding standard temperature;

[0024] S3, apportion the current error according to the number of remaining stages and dynamically adjust the current;

[0025] The current in the remaining phase is given by the formula get;

[0026] in, is the current value of the next stage, is the current value of the current stage, is the target current value, is the target voltage value, is the voltage value of the current stage, is the resistance of the current stage, is the target temperature, is the temperature of the current stage; are the control gain coefficients for current, voltage and temperature respectively;

[0027] is the number of remaining stages, used to apportion the current error;

[0028] therefore, ;Current error adjustment based on the remaining number of stages nk;

[0029] ; Current adjustment based on voltage error and resistance R(T), and resistance R(T) varies with temperature;

[0030] : Current adjustment based on temperature difference;

[0031] In summary, when adjusting the residual current, the current of the next stage is adjusted based on different currents, voltages, and temperatures to ensure a smooth and accurate transition to the target value;

[0032] S4. Apply new current to the next stage of operation to ensure a smooth transition.

[0033] A further technical improvement of the present invention is that when collecting the actual output data of the current stage, the number of subsequent stages is adjusted according to the temperature and temperature variation of the current stage. The method for adjusting the number of stages includes the following steps:

[0034] A1. Collect the temperature at the current stage , and calculate the temperature of the previous stage The temperature change is calculated using the formula: , thereby judging the current temperature trend;

[0035] A2. Set the current stage temperature With the preset upper temperature For comparison, if the current stage temperature Exceeding upper temperature limit , it is determined that there is a high temperature risk and the number of stages is increased;

[0036] A3. According to the temperature change and the preset upper temperature limit and preset temperature change thresholds, dynamically adjusting the number of subsequent stages ;

[0037] in, ;

[0038] is the number of baseline stages, i.e. the number of stages initially set;

[0039] is the temperature adjustment coefficient, which is used to control the effect of temperature change on the number of stages;

[0040] If the current stage temperature is met Exceeding upper temperature limit or temperature change After exceeding the temperature change threshold, the number of stages needs to be increased to smooth the current change;

[0041] By dynamically adjusting the number of subsequent stages, the number of stages of step conversion can be dynamically adjusted according to the temperature change to avoid current fluctuations caused by high temperature;

[0042] And by increasing or decreasing the number of stages, the current conversion process is ensured to be smooth under different working conditions, thereby improving the efficiency and safety of battery testing.

[0043] A further technical improvement of the present invention is that between steps S2 and S3, a linear judgment is performed on the relationship between temperature and voltage, which includes the following steps:

[0044] Z1, record the temperature and voltage changes in the first x stages, x is a positive integer greater than 2, and generate and curve;

[0045] Z2, yes and The curves were subjected to linear regression analysis;

[0046] The analysis included the following results:

[0047] Q1. and The curve is a linear model, and the S3 step is directly used to adjust the current formula;

[0048] Q2, and If the curve is a nonlinear model, the current formula in step S3 is corrected and then calculated. The corrected formula is:

[0049] ;

[0050] in, is the nonlinear correction coefficient, is the difference between the current temperature and the reference temperature, is the difference between the current voltage and the reference voltage;

[0051] It is a nonlinear term used to capture the coupling effect of temperature and voltage. When these variables do not satisfy the linear relationship, corrections are made to ensure the accuracy of current adjustment.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] The present invention ensures that the current remains stable during the process of step conversion by dividing the current into multiple stages and dynamically adjusting the current, thereby avoiding sudden changes or fluctuations in the current. In addition, the accuracy of current regulation is improved by collecting feedback data such as current, voltage, and temperature in real time and performing stage-by-stage adjustments according to the current error. Furthermore, the feedback system compares the actual output with the target value in real time, thereby adjusting the current in time and ensuring accurate control of the entire conversion process. Therefore, smooth current conversion helps to reduce the impact on the battery and prolong the service life of the battery.

[0054] And when working, by dynamically adjusting the number of stages of work step conversion according to temperature changes, the solution can adapt to different load conditions and temperature changes, ensuring the current stability during the work step conversion process. Increasing the number of stages makes the current adjustment more detailed, thereby reducing the impact of large current changes on the system, and introducing an upper temperature threshold. When the temperature exceeds the set safety threshold, the number of stages is automatically increased to reduce the current change range, avoiding battery or system failure or damage due to overheating, and improving the safety of system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0056] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0057] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments. Example 1

[0058] See also Figure 1 As shown, the present invention provides a method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply, the method comprising the following steps:

[0059] Step 1: Receive PC process instructions, start the process automatically, and wait for the execution step conversion;

[0060] Step 2: Determine whether the work step conversion process is normal. If the process is abnormal, stop the process. If the process is normal, continue to execute the process.

[0061] Step 3: Perform inspection sampling on the actual output data of the circuit through the ADC, and compare the actual output data with the preset threshold data;

[0062] In this embodiment, if the actual output data is within the preset threshold data range, the actual output data of the current stage is collected, the current error is calculated, and the current is adjusted in a multi-stage manner until the corresponding step conversion condition is reached;

[0063] The current adjustment process includes the following steps:

[0064] P1: Set the process step, mark the process steps of the same type, and calculate the conversion difference data between the synchronous type process step currents based on the preset process step conversion current;

[0065] P2: Divide each difference data into multiple stages, and match the corresponding conversion difference data with the number of stages to obtain the preset threshold data of each conversion stage;

[0066] P3: Carry out each conversion stage in the process step in turn, and compare the preset threshold data and the actual output data of each conversion stage in real time to obtain the stage comparison data, and adjust the current variable of the next stage based on the stage comparison data to ensure that the current remains stable and avoids sudden changes or fluctuations;

[0067] Adjust the current variable method for the next stage, including the following steps:

[0068] S1. Collect the actual output data of the current stage, including current ,Voltage ,temperature , calculate the current in the preset threshold data of the corresponding stage , voltage difference ;

[0069] S2. Calculate the current error at the current stage , and calculate the resistance change according to the voltage and temperature at the current stage ;

[0070] in, is the temperature of the current stage, is the reference temperature, which is the initial value of the resistance at the corresponding standard temperature;

[0071] The linearity judgment of the relationship between temperature and voltage includes the following steps:

[0072] Z1, record the temperature and voltage changes in the first x stages, x is a positive integer greater than 2, and generate and curve;

[0073] Z2, yes and The curves were subjected to linear regression analysis;

[0074] In this embodiment, the fitting threshold is set and the coefficient of determination is:

[0075] Determine linearity;

[0076] in, is the actual observed value, is the fitted value, is the mean of the observed values;

[0077] therefore, is the residual sum of squares between the observed and predicted values, is the sum of squares of differences between the observed values ​​and the mean;

[0078] In this embodiment, if the determination coefficient is not less than the fitting threshold, then it is judged that and The curve is a linear model;

[0079] S3, apportion the current error according to the number of remaining stages and dynamically adjust the current;

[0080] The current in the remaining phase is given by the formula get;

[0081] in, is the current value of the next stage, is the current value of the current stage, is the target current value, is the target voltage value, is the voltage value of the current stage, is the resistance of the current stage, is the target temperature, is the temperature of the current stage; are the control gain coefficients for current, voltage and temperature respectively;

[0082] is the number of remaining stages, used to apportion the current error;

[0083] therefore, ;Current error adjustment based on the remaining number of stages nk;

[0084] ; Current adjustment based on voltage error and resistance R(T), and resistance R(T) varies with temperature;

[0085] : Current adjustment based on temperature difference;

[0086] In summary, when adjusting the residual current, the current of the next stage is adjusted based on different currents, voltages, and temperatures to ensure a smooth and accurate transition to the target value;

[0087] S4, apply the new current to the next stage of operation to ensure a smooth transition;

[0088] Step 4: After the work step conversion process is completed, determine whether the current work step state is consistent with the next work step state. If the current work step state is consistent with the next work step state, obtain the next work step information and continue the work step conversion.

[0089] Example 2

[0090] A method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply, the method comprising the following steps:

[0091] Step 1: Receive PC process instructions, start the process automatically, and wait for the execution step conversion;

[0092] Step 2: Determine whether the work step conversion process is normal. If the process is abnormal, stop the process. If the process is normal, continue to execute the process.

[0093] Step 3: Perform inspection sampling on the actual output data of the circuit through the ADC, and compare the actual output data with the preset threshold data;

[0094] If the actual output data exceeds the preset threshold data range, it is judged as data abnormality and the process stops;

[0095] If the actual output data is within the preset threshold data range, the actual output data of the current stage is collected, the current error is calculated, and the current is adjusted in a multi-stage manner until the corresponding step conversion condition is reached;

[0096] The current adjustment process includes the following steps:

[0097] P1: Set the process step, mark the process steps of the same type, and calculate the conversion difference data between the synchronous type process step currents based on the preset process step conversion current;

[0098] P2: Divide each difference data into multiple stages, and match the corresponding conversion difference data with the number of stages to obtain the preset threshold data of each conversion stage;

[0099] P3: Carry out each conversion stage in the process step in turn, and compare the preset threshold data and the actual output data of each conversion stage in real time to obtain the stage comparison data, and adjust the current variable of the next stage based on the stage comparison data to ensure that the current remains stable and avoids sudden changes or fluctuations.

[0100] Adjust the current variable method for the next stage, including the following steps:

[0101] S1. Collect the actual output data of the current stage, including current ,Voltage ,temperature , calculate the current in the preset threshold data of the corresponding stage , voltage difference ;

[0102] S2. Calculate the current error at the current stage , and calculate the resistance change according to the voltage and temperature at the current stage ;

[0103] in, is the temperature of the current stage, is the reference temperature, which is the initial value of the resistance at the corresponding standard temperature;

[0104] The linearity judgment of the relationship between temperature and voltage includes the following steps:

[0105] Z1, record the temperature and voltage changes in the first x stages, x is a positive integer greater than 2, and generate and curve;

[0106] Z2, yes and The curves were subjected to linear regression analysis;

[0107] In this embodiment, the fitting threshold is set and the coefficient of determination is:

[0108] In this embodiment, the fitting threshold is set and the coefficient of determination is:

[0109] Determine linearity;

[0110] in, is the actual observed value, is the fitted value, is the mean of the observed values;

[0111] therefore, is the residual sum of squares between the observed and predicted values, is the sum of squares of differences between the observed values ​​and the mean;

[0112] In this embodiment, if the determination coefficient is not less than the fitting threshold, then it is judged that and The curve is a linear model;

[0113] S3, apportion the current error according to the number of remaining stages and dynamically adjust the current;

[0114] The current formula for the remaining stage is corrected to: ;

[0115] in, is the current value of the next stage, is the current value of the current stage, is the target current value, is the target voltage value, is the voltage value of the current stage, is the resistance of the current stage, is the target temperature, is the temperature of the current stage;

[0116] is the number of remaining stages, used to apportion the current error;

[0117] therefore, ;Current error adjustment based on the remaining number of stages nk;

[0118] ; Current adjustment based on voltage error and resistance R(T), and resistance R(T) varies with temperature;

[0119] : Current adjustment based on temperature difference;

[0120] In summary, when adjusting the residual current, the current of the next stage is adjusted based on different currents, voltages, and temperatures to ensure a smooth and accurate transition to the target value;

[0121] in, is the nonlinear correction coefficient, is the difference between the current temperature and the reference temperature, is the difference between the current voltage and the reference voltage;

[0122] It is a nonlinear term used to capture the coupling effect of temperature and voltage. It makes corrections when these variables do not satisfy a linear relationship to ensure the accuracy of current adjustment.

[0123] S4, apply the new current to the next stage of operation to ensure a smooth transition;

[0124] Step 4: After the work step conversion process is completed, determine whether the current work step state is consistent with the next work step state. If the current work step state is consistent with the next work step state, obtain the next work step information and continue the work step conversion.

[0125] Example 3

[0126] A method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply, the method comprising the following steps:

[0127] Step 1: Receive PC process instructions, start the process automatically, and wait for the execution step conversion;

[0128] Step 2: Determine whether the work step conversion process is normal. If the process is abnormal, stop the process. If the process is normal, continue to execute the process.

[0129] Step 3: Perform inspection sampling on the actual output data of the circuit through the ADC, and compare the actual output data with the preset threshold data;

[0130] In this embodiment, if the actual output data is within the preset threshold data range, the actual output data of the current stage is collected, the current error is calculated, and the current is adjusted in a multi-stage manner until the corresponding step conversion condition is reached;

[0131] The current adjustment process includes the following steps:

[0132] P1: Set the process step, mark the process steps of the same type, and calculate the conversion difference data between the synchronous type process step currents based on the preset process step conversion current;

[0133] P2: Divide each difference data into multiple stages, and match the corresponding conversion difference data with the number of stages to obtain the preset threshold data of each conversion stage;

[0134] P3: Carry out each conversion stage in the process step in turn, and compare the preset threshold data and the actual output data of each conversion stage in real time to obtain the stage comparison data, and adjust the current variable of the next stage based on the stage comparison data to ensure that the current remains stable and avoids sudden changes or fluctuations;

[0135] Adjust the current variable method for the next stage, including the following steps:

[0136] S1. Collect the actual output data of the current stage, including current ,Voltage ,temperature , calculate the current in the preset threshold data of the corresponding stage , voltage difference ;

[0137] S2. Calculate the current error at the current stage , and calculate the resistance change according to the voltage and temperature at the current stage ;

[0138] in, is the temperature of the current stage, is the reference temperature, which is the initial value of the resistance at the corresponding standard temperature;

[0139] Performing linear judgment on the relationship between temperature and voltage includes the following steps:

[0140] Z1, record the temperature and voltage changes in the first x stages, x is a positive integer greater than 2, and generate and The curves were subjected to linear regression analysis;

[0141] In this embodiment, a fitting threshold is set and the coefficient of determination is passed;

[0142] Determine linearity;

[0143] in, is the actual observed value, is the fitted value, is the mean of the observed values;

[0144] therefore, is the residual sum of squares between the observed and predicted values, is the sum of squares of differences between the observed values ​​and the mean;

[0145] In this embodiment, if the determination coefficient is not less than the fitting threshold, then it is judged that and The curve is a linear model;

[0146] S3, apportion the current error according to the number of remaining stages and dynamically adjust the current;

[0147] The current in the remaining phase is given by the formula ;

[0148] in, is the current value of the next stage, is the current value of the current stage, is the target current value, is the target voltage value, is the voltage value of the current stage, is the resistance of the current stage, is the target temperature, is the temperature of the current stage;

[0149] are the control gain coefficients for current, voltage and temperature respectively;

[0150] is the number of remaining stages, used to apportion the current error;

[0151] therefore, ;Current error adjustment based on the remaining number of stages nk;

[0152] ; Current adjustment based on voltage error and resistance R(T), and resistance R(T) varies with temperature;

[0153] : Current adjustment based on temperature difference;

[0154] In summary, when adjusting the residual current, the current of the next stage is adjusted based on different currents, voltages, and temperatures to ensure a smooth and accurate transition to the target value;

[0155] And when collecting the actual output data of the current stage, the number of subsequent stages is adjusted according to the temperature and temperature change of the current stage, and the method for adjusting the number of stages includes the following steps;

[0156] A1. Collect the temperature at the current stage , and calculate the temperature of the previous stage The temperature change is calculated using the formula: , thereby judging the current temperature trend;

[0157] A2. Set the current stage temperature With the preset upper temperature For comparison, if the current stage temperature Exceeding upper temperature limit , it is determined that there is a high temperature risk and the number of stages is increased;

[0158] A3. According to the temperature change and the preset upper temperature limit and preset temperature change thresholds, dynamically adjusting the number of subsequent stages ;

[0159] in, ;

[0160] is the number of baseline stages, i.e. the number of stages initially set;

[0161] is the temperature adjustment coefficient, which is used to control the effect of temperature change on the number of stages;

[0162] If the current stage temperature is met Exceeding upper temperature limit or temperature change After exceeding the temperature change threshold, the number of stages needs to be increased to smooth the current change;

[0163] By dynamically adjusting the number of subsequent stages, the number of stages of step conversion can be dynamically adjusted according to the temperature change to avoid current fluctuations caused by high temperature;

[0164] And by increasing or decreasing the number of stages, the current conversion process is ensured to be smooth under different working conditions, thus improving the efficiency and safety of battery testing;

[0165] S4, apply the new current to the next stage of operation to ensure a smooth transition;

[0166] Step 4: After the work step conversion process is completed, determine whether the current work step state is consistent with the next work step state. If the current work step state is consistent with the next work step state, obtain the next work step information and continue the work step conversion.

[0167] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply, characterized in that: The method comprises the following steps: Step 1: Receive process instructions, start process automation, and wait for execution of work step conversion; Step 2: Determine whether the work step conversion process is normal. If the process is abnormal, stop the process. If the process is normal, continue to execute the process. Step 3: perform inspection sampling on the actual output data of the circuit, and compare the actual output data with the preset threshold data; If the actual output data exceeds the preset threshold data range, it is judged as data abnormality and the process stops; If the actual output data is within the preset threshold data range, the actual output data of the current stage is collected, the current error is calculated, and the current is adjusted in a multi-stage manner until the corresponding step conversion condition is reached; The current adjustment process includes the following steps: P1: Set the process step, mark the process steps of the same type, and calculate the conversion difference data between the synchronous type process step currents based on the preset process step conversion current; P2: Divide each difference data into multiple stages, and match the corresponding conversion difference data with the number of stages to obtain the preset threshold data of each conversion stage; P3: Carry out each conversion stage in the process step in sequence, and compare the preset threshold data and the actual output data of each conversion stage in real time to obtain the stage comparison data, and adjust the current variable of the next stage based on the stage comparison data; Adjust the current variable method for the next stage, including the following steps: S1. Collect the actual output data of the current stage, including the current I k , voltage V k and temperature T k , calculate the current I in the preset threshold data of the corresponding stage t Difference and voltage V t difference; S2. Calculate the current error ΔT at the current stage e =I t -I k , and according to the current stage voltage V k , Temperature T k , calculate the resistance change R(T) = R0(1+α(T k -T0); Among them, T k is the temperature of the current stage; T0 is the reference temperature, which is the initial value of the resistance at the corresponding standard temperature; S3, apportion the current error according to the number of remaining stages and dynamically adjust the current; S4, apply new current to carry out the next stage of operation; Step 4: After the work step conversion process is completed, determine whether the current work step status is consistent with the next work step status, and proceed with the subsequent process based on the judgment result.

2. A method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply according to claim 1, characterized in that: The subsequent process includes: The current work step status is consistent with the next work step status, obtain the next work step information, and continue the work step conversion; If the current working step status is inconsistent with the next working step status, the main circuit output is stopped, the next working step information is obtained, and the process is executed from step 2.

3. The method for implementing the uninterrupted conversion of the same type of working step current of a battery detection power supply according to claim 1 is characterized in that: In step S3, the current in the remaining stage is given by the formula get; Among them, I k+1 is the current value of the next stage, I k is the current value of the current stage, I t is the target current value, V t is the target voltage value, V k is the voltage value at the current stage, R(T) is the resistance change, T t is the target temperature, T k is the temperature of the current stage; K p , K v and K T are the control gain coefficients for current, voltage and temperature respectively; nk is the number of remaining stages, which is used to share the current error.

4. A method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply according to claim 3, characterized in that: Between steps S2 and S3, a linear determination is performed on the relationship between temperature and voltage, which includes the following steps: Z1, record the temperature and voltage changes in the first x stages, and generate V k With T k curve; Z2, V k With T k The curves were subjected to linear regression analysis; The analysis included the following results: Q1, V k With T k The curve is a linear model, and the S3 step is directly used to adjust the current formula; Q2, V k With T k If the curve is a nonlinear model, the current formula in step S3 is corrected and then calculated. The corrected formula is: Where β is the nonlinear correction coefficient, (T k -T0) is the difference between the current temperature and the reference temperature, (V k -V0) is the difference between the current voltage and the reference voltage; β(T k -T0)(V k -V0) is a nonlinear term used to capture the coupling effect of temperature and voltage.

5. A method for implementing uninterrupted conversion of current in the same working step of a battery detection power supply according to claim 4, characterized in that: When collecting the actual output data of the current stage, the number of subsequent stages is adjusted according to the temperature and temperature change of the current stage. The method for adjusting the number of stages includes the following steps: A1. Collect the temperature of the current stage and calculate the temperature change compared with the temperature of the previous stage to determine the current temperature trend; A2. Compare the current stage temperature with the preset upper limit temperature. If the current stage temperature exceeds the upper limit temperature, it is determined that there is a high temperature risk and the number of stages is increased; A3. Dynamically adjust the number of subsequent stages according to the temperature change ΔT and the preset upper limit temperature and temperature change threshold.

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