Battery state detection method for low-temperature preservation box

Abstract

The invention belongs to the technical field of battery management, and provides a battery state detection method for a low-temperature preservation box, and the method comprises the steps: obtaining a current voltage value Ua of a battery when a battery state detection instruction is received; selecting a charging mode of the battery according to the current battery voltage value Ua and a preset rule; if the voltage value of the battery meets the first preset rule, the charging mode of the battery is a first charging mode; if the voltage value of the battery meets a second preset rule, the charging mode of the battery is a second charging mode; if the voltage value of the battery meets a third preset rule, the charging mode of the battery is a third charging mode; when the battery is charged, the temperature of the battery is detected, and the first health state of the battery is obtained; and after the battery is charged, detecting the current voltage value Ub of the battery to obtain a second health state of the battery, and detecting the capacity of the battery to obtain a third health state of the battery. According to the invention, the health state of the battery can be detected, and sudden faults are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of battery management, and in particular, relates to a battery status detection method for a low-temperature storage box. Background Art

[0002] In existing battery management systems, for newly produced or repaired cryogenic storage boxes, battery testing is often required in the factory to ensure that their performance meets the standards. Battery status detection technology is an indispensable part of modern electronic devices. Batteries may fail or even explode under abnormal conditions such as overcharging, over-discharging, overheating, and insufficient capacity. Therefore, real-time monitoring of battery status can detect potential problems in advance and avoid sudden failures, thereby reducing maintenance costs and improving user experience. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a battery status detection method for a low-temperature storage box, which can detect the health status of the battery, thereby avoiding problems such as battery explosion, low battery service life, and charging heat.

[0004] The present invention adopts the following technical solution.

[0005] The present invention provides a battery status detection method for a low-temperature storage box, comprising: upon receiving a battery status detection instruction, obtaining a current voltage value Ua of the battery;

[0006] Select the battery charging mode according to the current battery voltage value Ua and preset rules;

[0007] If the voltage value of the battery satisfies the first preset rule, the charging mode of the battery is the first charging mode;

[0008] If the voltage value of the battery satisfies the second preset rule, the charging mode of the battery is the second charging mode;

[0009] If the voltage value of the battery satisfies the third preset rule, the charging mode of the battery is the third charging mode;

[0010] When the battery is charging, the temperature of the battery is detected to obtain a first health status of the battery;

[0011] After the battery is fully charged, the current voltage value Ub of the battery is detected to obtain the second health state of the battery, and the battery capacity is detected to obtain the third health state of the battery.

[0012] Furthermore, the first preset rule is that the battery voltage Ua≥U1 and Ua<U2, and the first charging mode is a normal charging mode;

[0013] When the battery is in normal charging mode, the PWM duty cycle is gradually increased from 1 / 100 at a frequency of the AD value increasing by 1 per minute until the duty cycle increases to 90 / 100, and then the 90% duty cycle is maintained for charging for 2 hours.

[0014] Furthermore, the second preset rule is that the battery voltage Ua≥U2, and the second charging mode is a trickle charging mode;

[0015] When the battery is in trickle charging mode, the battery charge and discharge management module charges at the minimum current for 2 hours.

[0016] Further, the third preset rule is that the battery voltage Ua<U1, and the third charging mode is the activation charging mode;

[0017] When the battery adopts the activation charging mode, the PWM duty cycle is gradually increased to 100% and deep charging is performed for 2 hours.

[0018] Furthermore, the temperature of the battery during charging is detected by the temperature detection module to obtain the temperature threshold T0 of the battery during the charging process. If T1<T0<T2, the first health state is normal. If T0≤T1 or T0≥T2, the first health state is abnormal and charging is stopped.

[0019] Furthermore, the T1 is 0°C and T2 is 45°C.

[0020] Furthermore, after the battery is charged, the current battery voltage value Ub is detected. If the battery voltage Ub≥U2, the second health state of the battery is normal. If the battery voltage Ub<U2, the second health state is abnormal.

[0021] Furthermore, the voltage of U1 is 10.5V, and the voltage of U2 is 12.5V.

[0022] Furthermore, after the battery charging is completed, the battery is discharged through the battery charging and discharging management module, the battery capacity detection module calculates the discharge capacity in real time, obtains the actual capacity of the battery, and transmits the battery capacity information to the main control module, and the main control module determines the capacity ratio of the actual capacity of the battery to the rated capacity of the battery based on the information. If the capacity ratio C≥80%, the third health state of the battery is normal; if the capacity ratio C<80%, the third health state of the battery is abnormal.

[0023] Furthermore, the first health status, second health status and third health status information of the battery are displayed through the human-computer interaction module. If the first health status, the second health status or the third health status is abnormal, the alarm module alarms to remind the staff to replace the battery in time.

[0024] The beneficial effects of the present invention are that, compared with the prior art, the present invention can monitor the temperature condition of the battery during the charging process in real time. When the battery temperature is not within the normal range, an alarm is issued in time and charging is stopped, thereby preventing abnormal battery temperature from causing malfunction or even explosion, thereby improving the safety of the battery; selecting different charging modes according to different battery voltages helps to optimize the charging process according to the actual state of the battery, thereby improving the efficiency and accuracy of detection; the voltage state and battery capacity state of the battery after charging are monitored in real time. When the voltage state or battery capacity state is abnormal, the system will remind the staff to replace the battery in time through the alarm module, thereby avoiding equipment failure due to battery problems and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a flow chart of a battery status detection method for a low-temperature storage box provided by the present invention;

[0026] Figure 2 The present invention is a schematic diagram of a battery status detection system for a low-temperature storage box. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only embodiments of a part of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0028] like Figure 1 As shown, the present invention provides a battery status detection method for a low-temperature storage box, comprising the following steps:

[0029] When a battery status detection instruction is received, the current voltage value Ua of the battery is obtained, and the charging mode of the battery is selected according to the current battery voltage value Ua and a preset rule.

[0030] If the voltage value Ua of the battery satisfies the first preset rule, the charging mode of the battery is the first charging mode;

[0031] The first preset rule is that the battery voltage Ua≥U1 and Ua<U2, and the first charging mode is the normal charging mode; when the battery adopts the normal charging mode, the PWM duty cycle is gradually increased from 1 / 100 at a frequency of adding 1 to the AD value per minute until the duty cycle increases to 90 / 100, and then the 90% duty cycle is maintained for charging for 2 hours.

[0032] If the battery voltage value Ua satisfies the second preset rule, the battery charging mode is the second charging mode;

[0033] The second preset rule is that the battery voltage Ua≥U2, and the second charging mode is the trickle charging mode; when the battery adopts the trickle charging mode, the battery charging and discharging management module charges at the minimum current for 2 hours.

[0034] If the battery voltage value Ua satisfies the third preset rule, the battery charging mode is the third charging mode;

[0035] The third preset rule is that the battery voltage Ua<U1, and the third charging mode is the activation charging mode; when the battery adopts the activation charging mode, the PWM duty cycle is gradually increased to 100%, and deep charging is performed for 2 hours.

[0036] When the battery is charging, the temperature of the battery is detected to obtain a first health status of the battery;

[0037] The temperature of the battery during charging is detected by the temperature detection module to obtain the temperature threshold T0 of the battery during charging. If T1<T0<T2, the first health state is normal. If T0≤T1 or T0≥T2, the first health state is abnormal and charging is stopped. Further, T1 is 0℃ and T2 is 45℃.

[0038] After the battery is charged, the current voltage value Ub of the battery is detected to obtain the second health status of the battery;

[0039] If the battery voltage Ub≥U2, the second health state of the battery is normal, and if the battery voltage Ub<U2, the second health state is abnormal. Further, U1 is 10.5V, and U2 is 12.5V.

[0040] After the battery is charged, the battery capacity is tested to obtain the third health status of the battery;

[0041] The battery is discharged through the battery charging and discharging management module, and the battery capacity detection module calculates the discharge capacity in real time to obtain the actual capacity of the battery, and transmits the battery capacity information to the main control module. The main control module determines the capacity ratio of the actual capacity of the battery to the rated capacity of the battery based on the information. If the capacity ratio C ≥ 80%, the third health state of the battery is normal; if the capacity ratio C < 80%, the third health state of the battery is abnormal.

[0042] The first health state, the second health state and the third health state information of the battery are displayed through the human-computer interaction module. If the first health state, the second health state or the third health state is abnormal, the alarm module will alarm to remind the staff to replace the battery in time.

[0043] like Figure 2As shown, the present invention also provides a battery status detection system for a low-temperature storage box, which is used to implement the above-mentioned battery status detection method for a low-temperature storage box. The system includes a power module, a main control module, a battery charging and discharging management module, a human-computer interaction module, a battery capacity detection module, a voltage detection module, a temperature detection module and an alarm module;

[0044] The power module is connected to the main control module to supply power to the main control module; the power module includes a power plug, a circuit breaker, a filter and a power board, the power plug is connected to the filter through the circuit breaker, the filter is connected to the power board, and the power board is connected to the main control module.

[0045] The human-machine interaction module is connected to the main control module. The operator transmits a battery status detection instruction to the main control module through the human-machine interaction module. The main control module transmits the battery voltage information, temperature information and battery capacity information to the human-machine interaction module and displays it.

[0046] One end of the battery charging and discharging management module is connected to the main control module, and the other end is connected to the battery. When the power module supplies power to the low-temperature preservation box, the main control module controls the battery charging and discharging management module to charge the battery. When charging is completed, the power supply of the power module is cut off, and the battery is discharged through the battery charging and discharging management module.

[0047] One end of the battery capacity detection module is connected to the battery, and the other end is connected to the main control module, so as to calculate the discharge capacity of the battery in real time and transmit the actual capacity information of the battery to the main control module; further, the battery capacity module can use a coulomb meter.

[0048] One end of the temperature detection module is connected to the battery, and the other end is connected to the main control module. The temperature detection module transmits the temperature information of the battery during charging to the main control module. Further, the temperature detection module can use an infrared sensor.

[0049] The voltage detection module is connected to the battery to obtain the voltage information of the battery before charging and after charging, and transmits the voltage information to the main control module.

[0050] The alarm module is connected to the main control module. When the first health state, the second health state or the third health state of the battery is abnormal, the main control module controls the alarm module to alarm.

[0051] The beneficial effects of the present invention are that, compared with the prior art, the present invention can monitor the temperature condition of the battery during the charging process in real time. When the battery temperature is not within the normal range, an alarm is issued in time and charging is stopped, thereby preventing abnormal battery temperature from causing malfunction or even explosion, thereby improving the safety of the battery; selecting different charging modes according to different battery voltages helps to optimize the charging process according to the actual state of the battery, thereby improving the efficiency and accuracy of detection; the voltage state and battery capacity state of the battery after charging are monitored in real time. When the voltage state or battery capacity state is abnormal, the system will remind the staff to replace the battery in time through the alarm module, thereby avoiding equipment failure due to battery problems and improving user experience.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for detecting the battery status of a low-temperature storage box, characterized in that: include: When receiving the battery status detection instruction, obtain the current battery voltage value Ua; Select the battery charging mode according to the current battery voltage value Ua and preset rules; If the voltage value of the battery satisfies the first preset rule, the charging mode of the battery is the first charging mode; If the voltage value of the battery satisfies the second preset rule, the charging mode of the battery is the second charging mode; If the voltage value of the battery satisfies the third preset rule, the charging mode of the battery is the third charging mode; When the battery is charging, the temperature of the battery is detected to obtain a first health status of the battery; After the battery is fully charged, the current voltage value Ub of the battery is detected to obtain the second health state of the battery, and the battery capacity is detected to obtain the third health state of the battery.

2. A method for detecting the battery status of a low-temperature storage box according to claim 1, characterized in that: The first preset rule is that the battery voltage Ua≥U1 and Ua<U2, and the first charging mode is the normal charging mode; When the battery is in normal charging mode, the PWM duty cycle is gradually increased from 1 / 100 at a frequency of the AD value increasing by 1 per minute until the duty cycle increases to 90 / 100, and then the 90% duty cycle is maintained for charging for 2 hours.

3. A method for detecting the battery status of a low-temperature storage box according to claim 2, characterized in that: The second preset rule is that the battery voltage Ua≥U2, and the second charging mode is a trickle charging mode; When the battery is in trickle charging mode, the battery charge and discharge management module charges at the minimum current for 2 hours.

4. A method for detecting the battery status of a low-temperature storage box according to claim 3, characterized in that: The third preset rule is that the battery voltage Ua<U1, and the third charging mode is the activation charging mode; When the battery adopts the activation charging mode, the PWM duty cycle is gradually increased to 100% and deep charging is performed for 2 hours.

5. A method for detecting the battery status of a low-temperature storage box according to claim 4, characterized in that: The temperature of the battery during charging is detected by the temperature detection module to obtain the temperature threshold T0 of the battery during the charging process. If T1<T0<T2, the first health state is normal. If T0≤T1 or T0≥T2, the first health state is abnormal and charging is stopped.

6. A method for detecting the battery status of a low-temperature storage box according to claim 5, characterized in that: The T1 is 0°C and T2 is 45°C.

7. A method for detecting the battery status of a low-temperature storage box according to claim 6, characterized in that: After the battery is charged, the current battery voltage value Ub is detected. If the battery voltage Ub≥U2, the second health state of the battery is normal. If the battery voltage Ub<U2, the second health state is abnormal.

8. A method for detecting the battery status of a low-temperature storage box according to claim 7, characterized in that: The voltage of U1 is 10.5V, and the voltage of U2 is 12.5V.

9. A method for detecting battery status in a low-temperature storage box according to claim 1, characterized in that: After the battery is charged, the battery is discharged through the battery charging and discharging management module. The battery capacity detection module calculates the discharge capacity in real time to obtain the actual capacity of the battery, and transmits the battery capacity information to the main control module. The main control module determines the capacity ratio of the actual capacity of the battery to the rated capacity of the battery based on the information. If the capacity ratio C is ≥80%, the third health state of the battery is normal. If the capacity ratio C is <80%, the third health state of the battery is abnormal.

10. A method for detecting battery status in a low-temperature storage box according to claim 1, characterized in that: The first health state, the second health state and the third health state information of the battery are displayed through the human-computer interaction module. If the first health state, the second health state or the third health state is abnormal, the alarm module will alarm to remind the staff to replace the battery in time.

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