Non-charging diagnosis method for battery changing cabinet

Abstract

The invention belongs to the technical field of battery changing cabinets, and particularly relates to a battery changing cabinet non-charging diagnosis method, which comprises the following steps of: 1, initializing and self-checking; starting the battery changing cabinet, executing a self-checking program, and ensuring that all modules work normally; step 2, data acquisition; a data acquisition module is used for acquiring a sensor and an ADC; and collecting detection data. According to the non-charging diagnosis method for the battery changing cabinet, the user experience is improved, the problem can be solved more quickly by quickly diagnosing the non-charging problem, unnecessary waiting and troubles are avoided, and the charging experience of the user is improved. And the non-charging problem can be found and solved in time, the normal operation of the battery changing cabinet equipment can be ensured, the service life of the equipment is prolonged, and the reliability of the equipment is improved. And the diagnosis method can help the maintenance personnel to accurately position the problem and quickly repair the problem, so that the maintenance cost and time are saved, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery swap cabinets, and in particular to a method for diagnosing a battery swap cabinet that is not charging. Background Art

[0002] The current battery swap cabinets on the market have a variety of reasons for not charging, which cannot be accurately and quickly judged. Common reasons for not charging are as follows: battery aging leading to failure to charge, charger failure or damage, charging line failure or short circuit, poor battery contact, and system software problems affecting charging function.

[0003] There is no universal diagnostic method and concise display method, which is a big trouble for the market maintenance of the battery swap cabinet. This will increase the difficulty of the maintenance personnel, prolong the troubleshooting time, increase the maintenance cost, and affect the user experience, so a battery swap cabinet non-charging diagnosis method is needed. Summary of the invention

[0004] Based on the existing technical problems, the present invention proposes a method for diagnosing a battery swap cabinet that is not charging.

[0005] The present invention proposes a method for diagnosing a non-charging battery swap cabinet, which includes the following steps: Step 1, initialization and self-test: starting the battery swap cabinet, executing a self-test program, and ensuring that all modules are operating normally.

[0006] Step 2: Data collection: Collect and detect data through the data collection module sensor and ADC.

[0007] Step 3: Data analysis and fault diagnosis: After data collection, the battery protection status is first detected and judged through the battery management system module.

[0008] Step 4: Detect and determine the charger protection status through the charger diagnostic module.

[0009] Step 5: Finally, use the BMS module to detect and judge the battery MOS status.

[0010] Step 6: When there is no abnormality after the battery protection, charger protection and battery MOS detection, the battery request current, battery request voltage, battery charged and charging contact impedance too high detection and judgment are performed again.

[0011] Step 7. Record the diagnostic process and results, generate a report, and send it to the maintenance team or management system through the communication module. After completing the troubleshooting, restart the charging process to verify whether the problem is solved.

[0012] Preferably, the data collected in step 2 includes collecting the charging contact impedance R connect , charger output voltage V charger, charger output current I charger , battery voltage V b 、Battery current I b , Battery request voltage V request , Battery request current I request and charging contact temperature T charge .

[0013] Preferably, in step 3, the current battery charging protection state S is obtained. pb , determine whether there is charging high and low temperature protection, overcurrent protection, and overvoltage protection; the reason for not charging is equal to the battery protection status.

[0014] Preferably, in step 4, the current charger protection state S is obtained. pc , determine whether there is a fault, such as input undervoltage and output short circuit; the reason for not charging is equal to the charger protection status.

[0015] Preferably, in step 5, the current battery MOS state S is obtained. mos , determine whether the current charging MOS is turned on; if the MOS is not turned on, the reason for not charging is that the battery MOS status is abnormal.

[0016] Preferably, in step six, the duration T request The battery request current is collected at the same time; the collected request current values ​​are (I1, I2, ..., I t ), calculate the upper and lower limits Xi according to the battery type obtained through communication high and Xi low , and substitute it into the following formula to calculate:

[0017]

[0018] When this formula is satisfied, the reason for not charging is that the battery requested current is abnormal.

[0019] Preferably, in step six, the duration T request The battery request voltage is collected at the same time; the collected request voltage values ​​are (V1, V2, ..., V t ), calculate the upper and lower limits Xv based on the battery type obtained through communication high and Xv low , and substitute it into the following formula to calculate:

[0020]

[0021] When this formula is satisfied, the reason for not charging is that the battery requested voltage is abnormal.

[0022] Preferably, in step six, the duration T waitcur Time acquisition battery current I b, charger output current I charger ; Assume the charging cut-off current is I thread Make a judgment:

[0023]

[0024] When this formula is met, the reason for not charging is that the battery has been charged to the end.

[0025] Preferably, in step six, the duration T res Time acquisition charging contact impedance R connect And the charging contact temperature T charge ; Assume the charging contact impedance threshold is R thread , the temperature change rate threshold is α:

[0026]

[0027] When this formula is satisfied, the reason for non-charging is that the charging contact impedance is too high.

[0028] The beneficial effects of the present invention are:

[0029] The present invention improves the user experience: by quickly diagnosing the non-charging problem, the user can solve the problem more quickly, avoid unnecessary waiting and troubles, and improve the user's charging experience. It also increases the reliability of the equipment: timely detection and resolution of the non-charging problem can ensure the normal operation of the battery swap cabinet equipment, extend the service life of the equipment, and improve the reliability of the equipment. And reduces maintenance costs: the diagnostic method can help maintenance personnel accurately locate the problem and quickly repair it, saving maintenance costs and time, and improving maintenance efficiency. And promotes the development of the battery swap cabinet industry: the application of the non-charging diagnostic method has improved the technical level and service quality of the entire battery swap cabinet industry, and promoted the development and progress of the industry. In general, the non-charging diagnostic method brings many benefits to the battery swap cabinet, making it more intelligent and efficient, and bringing convenience and development opportunities to users and the industry. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Embodiment 1

[0032] A method for diagnosing a non-charging battery swap cabinet includes the following steps: Step 1: initialization and self-test; starting the battery swap cabinet, executing a self-test program, and ensuring that all modules are working properly.

[0033] Step 2: Data collection: Collect test data through the data collection module sensor and ADC; the collected data in step 2 includes collecting the charging contact impedance R connect , charger output voltage V charger , charger output current I charger , battery voltage V b 、Battery current I b , Battery request voltage V request , Battery request current I request and charging contact temperature T charge .

[0034] Step 3: Data analysis and fault diagnosis: After data collection, the battery protection status is first detected and judged through the battery management system module; in step 3, the current battery charging protection status S is obtained. pb , determine whether there is charging high and low temperature protection, overcurrent protection, and overvoltage protection; the reason for not charging is equal to the battery protection status.

[0035] Step 4: Detect and judge the charger protection status through the charger diagnostic module; in step 4, obtain the current charger protection status S pc , determine whether there is a fault, such as input undervoltage and output short circuit; the reason for not charging is equal to the charger protection status.

[0036] Step 5: Finally, use the BMS module to detect and judge the battery MOS status; in step 5, obtain the current battery MOS status S mos , determine whether the current charging MOS is turned on; if the MOS is not turned on, the reason for not charging is that the battery MOS status is abnormal.

[0037] Step 6: When there is no abnormality after the battery protection, charger protection and battery MOS detection, the battery request current, battery request voltage, battery charged and charging contact impedance too high detection and judgment are performed again.

[0038] In step 6, continue T request The battery request current is collected at the same time; the collected request current values ​​are (I1, I2, ..., I t ), calculate the upper and lower limits Xi according to the battery type obtained through communication high and Xi low , and substitute it into the following formula to calculate:

[0039]

[0040] When this formula is satisfied, the reason for not charging is that the battery requested current is abnormal.

[0041] In step 6, continue T requestThe battery request voltage is collected at the same time; the collected request voltage values ​​are (V1, V2, ..., V t ), calculate the upper and lower limits Xv based on the battery type obtained through communication high and Xv low , and substitute it into the following formula to calculate:

[0042]

[0043] When this formula is satisfied, the reason for not charging is that the battery requested voltage is abnormal.

[0044] In step 6, continue T waitcur Time acquisition battery current I b , charger output current I charger ; Assume the charging cut-off current is I thread Make a judgment:

[0045]

[0046] When this formula is met, the reason for not charging is that the battery has been charged to the end.

[0047] In step 6, continue T res Time acquisition charging contact impedance R connect And the charging contact temperature T charge ; Assume the charging contact impedance threshold is R thread , the temperature change rate threshold is α:

[0048]

[0049] When this formula is satisfied, the reason for non-charging is that the charging contact impedance is too high.

[0050] Step 7. Record the diagnostic process and results, generate a report, and send it to the maintenance team or management system through the communication module. After completing the troubleshooting, restart the charging process to verify whether the problem is solved.

[0051] The present invention improves the user experience: by quickly diagnosing the non-charging problem, the user can solve the problem more quickly, avoid unnecessary waiting and troubles, and improve the user's charging experience. It also increases the reliability of the equipment: timely detection and resolution of the non-charging problem can ensure the normal operation of the battery swap cabinet equipment, extend the service life of the equipment, and improve the reliability of the equipment. And reduces maintenance costs: the diagnostic method can help maintenance personnel accurately locate the problem and quickly repair it, saving maintenance costs and time, and improving maintenance efficiency. And promotes the development of the battery swap cabinet industry: the application of the non-charging diagnostic method has improved the technical level and service quality of the entire battery swap cabinet industry, and promoted the development and progress of the industry. In general, the non-charging diagnostic method brings many benefits to the battery swap cabinet, making it more intelligent and efficient, and bringing convenience and development opportunities to users and the industry.

[0052] Example 2 (whether it is possible to provide specific collected data for comparative analysis and judgment, and proceed to the second example).

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for diagnosing a battery swap cabinet not charging, characterized in that: The following steps are included: Step 1: Initialization and self-test: Start the power exchange cabinet and execute the self-test procedure to ensure that all modules are working properly; Step 2: Data collection: Collect and detect data through the data collection module sensor and ADC; Step 3: Data analysis and fault diagnosis: After data collection, the battery protection status is first detected and judged through the battery management system module; Step 4: Detect and judge the charger protection status through the charger diagnostic module; Step 5: Finally, use the BMS module to detect and judge the battery MOS status; Step 6: When there is no abnormality after the battery protection, charger protection and battery MOS detection, the battery request current, battery request voltage, battery charged and charging contact impedance too high detection and judgment are performed again; Step 7. Record the diagnostic process and results, generate a report, and send it to the maintenance team or management system through the communication module. After completing the troubleshooting, restart the charging process to verify whether the problem is solved.

2. A method for diagnosing a non-charging battery swap cabinet according to claim 1, characterized in that: The data collected in step 2 includes collecting the charging contact impedance R connect , charger output voltage V charger , charger output current I charger , battery voltage V b 、Battery current I b 、Battery request voltage V request , Battery request current I request and charging contact temperature T charge .

3. A method for diagnosing a non-charging battery swap cabinet according to claim 1, characterized in that: In step 3, the current battery charging protection state S is obtained. pb , determine whether there is charging high and low temperature protection, overcurrent protection, and overvoltage protection; the reason for not charging is equal to the battery protection status.

4. A method for diagnosing a non-charging battery swap cabinet according to claim 1, characterized in that: In step 4, the current charger protection state S is obtained. pc , determine whether there is a fault, such as input undervoltage and output short circuit; the reason for not charging is equal to the charger protection status.

5. A method for diagnosing a non-charging battery swap cabinet according to claim 1, characterized in that: In step 5, the current battery MOS state S is obtained. mos , determine whether the current charging MOS is turned on; If the MOS is not turned on, the reason for not charging is that the battery MOS status is abnormal.

6. A method for diagnosing a non-charging battery swap cabinet according to claim 1, characterized in that: In step 6, T request The battery request current is collected at the same time; the collected request current values ​​are (I1, I2, ..., I t ), calculate the upper and lower limits Xi according to the battery type obtained through communication high and Xi low , and substitute it into the following formula to calculate: [max(I1, I2,..., I t ) > Xi high or min(I1, I2,..., I t ) < Xi low ; When this formula is satisfied, the reason for not charging is that the battery requested current is abnormal.

7. A method for diagnosing a non-charging battery swap cabinet according to claim 1, characterized in that: In step 6, T request The battery request voltage is collected at the same time; the collected request voltage values ​​are (V1, V2, ..., V t ), calculate the upper and lower limits Xv based on the battery type obtained through communication high and Xv low , and substitute it into the following formula to calculate: [max(V1, V2,..., V t ) > Xv high or min(V1, V2,..., V t ) < Xv low ; When this formula is satisfied, the reason for not charging is that the battery requested voltage is abnormal.

8. A method for diagnosing a non-charging battery swap cabinet according to claim 1, characterized in that: In step 6, T waitcur Time acquisition battery current I b , charger output current I charger ; Assume the charging cut-off current is I thread Make a judgment: When this formula is met, the reason for not charging is that the battery has been charged to the end.

9. A method for diagnosing a non-charging battery swap cabinet according to claim 1, characterized in that: In step 6, T res Time acquisition charging contact impedance R connect And the charging contact temperature T charge ; Assume the charging contact impedance threshold is R thread , the temperature change rate threshold is α: When this formula is satisfied, the reason for non-charging is that the charging contact impedance is too high.

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