Lithium thionyl chloride battery information intelligent monitoring system

Abstract

The invention provides a lithium thionyl chloride battery information intelligent monitoring system. Comprising a battery pack and a battery information storage system installed between the battery pack and a shell, the battery information storage system comprises an MCU processor, a power circuit and an RS422 communication module, and the power circuit is connected with a battery control module in the battery pack. The system can store and inquire information such as accumulated power consumption time, battery models, battery numbers, battery delivery dates and the like of the batteries. In the battery power supply process, state information such as total voltage, discharge current and internal temperature of a battery pack is automatically recorded, the state information of the battery can be uploaded through RS422 communication, the electric quantity of the battery is scientifically estimated, the situation that the voltage of the battery is sharply reduced at the end of working, and electric equipment is damaged is avoided, and reliable use of the battery is guaranteed.

Description

Technical Field

[0001] The present invention relates to an intelligent monitoring system for lithium thionyl chloride battery information. Background Art

[0002] Lithium thionyl chloride batteries have advantages such as high specific energy, stable working voltage, wide working temperature range, and maintenance-free, and have been widely used in various equipment, as well as in the fields of instruments and meters, communication equipment, positioning devices, life-saving equipment, etc. The working voltage of lithium thionyl chloride batteries is relatively stable, and the battery voltage basically remains unchanged in the 85% power range. However, at the end of the battery's operation, the battery voltage will drop sharply, causing damage to the electrical equipment.

[0003] Therefore, it is necessary to accurately predict the battery's power. At present, the lithium thionyl chloride batteries on the market mainly roughly judge the battery capacity by measuring the working voltage. However, the voltage monitoring circuits used in the existing technologies cannot accurately and timely obtain the remaining power of the battery, and the effect of protecting the electrical equipment is not significant. For example, the battery power determination method, device, and medium disclosed in CN117538753A collect the first voltage value of the battery at the first moment; determine the first working mode of the electronic device at the first moment; start timing from the first moment; and determine the capacity change of the battery during the timing period according to the first voltage value, the timing duration from the first moment to the second moment, and the first corresponding relationship in the first working mode. In this way, as long as the battery voltage is collected once in the same working mode, the power at each moment in this working mode can be obtained through calculation, thereby reducing the number of times of using the circuit to detect the battery voltage, reducing the circuit energy consumption, and improving the power detection accuracy. However, the working voltage of lithium thionyl chloride batteries is stable, and the battery power data cannot be accurately predicted by collecting the battery voltage. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an intelligent monitoring system for lithium thionyl chloride battery information.

[0005] The present invention is achieved through the following technical solutions.

[0006] An intelligent monitoring system for lithium thionyl chloride battery information provided by the present invention includes a battery pack and a battery information storage system installed between the battery pack and the outer shell. The battery information storage system includes an MCU processor, a power supply circuit, and an RS422 communication module. The power supply circuit is connected to the battery control module in the battery pack, converts the +5V power output by the battery control module into 3.3V to supply power to the MCU processor and the RS422 communication module. The MCU processor records the cumulative battery working time, battery voltage, discharge current, and internal temperature in its Flash, and estimates the remaining capacity of the battery pack. The RS422 communication module uploads the information recorded by the MCU processor to the host computer.

[0007] The MUC processor is the JS32F103CB chip N1. The VBAT pin of the chip N1 is connected to the power supply circuit. The power supply circuit includes a power conversion chip U2. The input end of the power supply chip U2 is connected to the battery control module through a fuse F1 and grounded through a diode V1 and a capacitor C6. The output end outputs a 3.3V power supply and is grounded through a resistor R13 and a polarized resistor.

[0008] The PD0 pin of the chip N1 is connected to the output end of the chip N2 through a resistor R1. The input end of the chip N2 is connected to the 3.3V power supply and grounded through a parallel-connected capacitor C2 and a capacitor C3.

[0009] The PB2 pin of the chip N1 is connected to the 3.3V power supply through a resistor R12 and grounded through a resistor R14.

[0010] The PB10 and PB11 pins of the chip N1 are connected to the 8th and 7th pins of the storage chip U1. The 1st, 3rd, 4th, and 6th pins of the storage chip U1 are grounded. The 2nd pin is connected to the +5V power supply. The 8th and 7th pins of the storage chip U1 are also respectively connected to the +5V power supply through a resistor R2 and a resistor R3.

[0011] The PB6 and PB7 pins of the chip N1 are respectively connected to the 3rd and 2nd pins of the communication chip N3. The 1st pin of the communication chip N3 is connected to the 3.3V power supply and grounded through a capacitor C5. The 5th and 8th pins are respectively connected to the 3.3V power supply through a resistor R4 and a resistor R5. The 6th and 7th pins are respectively grounded through a resistor R8 and a resistor R9. A resistor R6 is connected between the 5th and 6th pins, and a resistor R7 is connected between the 7th and 8th pins.

[0012] The 5th pin of the communication chip N3 is connected to the 1st and 4th pins of the interface chip X1. The 6th pin of the communication chip N3 is connected to the 2nd and 5th pins of the interface chip X1. The 8th pin of the communication chip N3 is connected to the 6th and 8th pins of the interface chip X1. The 7th pin of the communication chip N3 is connected to the 9th and 10th pins of the interface chip.

[0013] The 11th and 12th pins of the interface chip X1 are connected in parallel to the PA13 pin of the chip N1 and connected to the 3.3V power supply through a resistor R15. The 13th and 14th pins are connected to the +5V power supply. The 16th and 17th pins are grounded. The 18th and 19th pins are connected in parallel to the PA14 pin of the chip N1 and grounded through a resistor R10. The 20th and 21st pins are grounded. The 22nd and 23rd pins are connected in parallel to the NRST pin of the chip N1.

[0014] The NRST pin of the chip N1 is also connected to the 3.3V power supply through a resistor R11 and grounded through a capacitor C8.

[0015] The BOOT0 pin of chip N1 is connected to the 3.3V power supply and the ground terminal through resistor R17 and resistor R18 respectively.

[0016] The +5V power supply is also grounded through capacitors C15, C16, and C17 connected in parallel.

[0017] The 3.3V power supply is also grounded through capacitors C9 to C14 connected in parallel.

[0018] The beneficial effects of the present invention are as follows: It can store and query information such as the cumulative power consumption time of the battery, battery model, battery number, and battery factory date. During the battery power supply process, it automatically records status information such as the total voltage, discharge current, and internal temperature of the battery pack, and can upload the battery status information through RS422 communication, scientifically estimate the battery power, avoid the sharp drop in voltage at the end of the battery operation, damage to the electrical equipment, and ensure the reliable use of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the principle of the MCU processor of the present invention;

[0020] Figure 2 It is a schematic diagram of the principle of the power output circuit of the present invention;

[0021] Figure 3 It is a schematic diagram of the principle of the trigger circuit of the present invention;

[0022] Figure 4 It is a schematic diagram of the principle of the communication circuit of the present invention;

[0023] Figure 5 It is a schematic diagram of the principle of the storage circuit of the present invention;

[0024] Figure 6 It is a schematic diagram of the principle of the interface circuit of the present invention;

[0025] Figure 7 It is a schematic diagram of the principle of the processor startup circuit of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] The technical solutions of the present invention will be further described below, but the scope of protection claimed is not limited thereto.

[0027] An intelligent monitoring system for lithium thionyl chloride battery information; it includes a battery pack and a battery information storage system installed between the battery pack and the outer shell. The battery information storage system includes an MCU processor, a power supply circuit, and an RS422 communication module. The power supply circuit is connected to the battery control module in the battery pack, converts the +5V power output by the battery control module into 3.3V to supply power to the MCU processor and the RS422 communication module. The MCU processor records the cumulative battery working time, battery voltage, discharge current, and internal temperature in its Flash, and estimates the remaining capacity of the battery pack. The RS422 communication module uploads the information recorded by the MCU processor to the host computer.

[0028] The MUC processor is the JS32F103CB chip N1. The VBAT pin of the chip N1 is connected to the power supply circuit. The power supply circuit includes a power conversion chip U2. The input end of the power supply chip U2 is connected to the battery control module through a fuse F1 and grounded through a diode V1 and a capacitor C6. The output end outputs 3.3V power and is grounded through a resistor R13 and a polar resistor.

[0029] The PD0 pin of the chip N1 is connected to the output end of the chip N2 through a resistor R1. The input end of the chip N2 is connected to the 3.3V power supply and grounded through the parallel-connected capacitors C2 and C3.

[0030] The PB2 pin of the chip N1 is connected to the 3.3V power supply through a resistor R12 and grounded through a resistor R14.

[0031] The PB10 and PB11 pins of the chip N1 are connected to the 8th and 7th pins of the storage chip U1. The 1st, 3rd, 4th, and 6th pins of the storage chip U1 are grounded, and the 2nd pin is connected to the +5V power supply. The 8th and 7th pins of the storage chip U1 are also respectively connected to the +5V power supply through a resistor R2 and a resistor R3.

[0032] The PB6 and PB7 pins of the chip N1 are respectively connected to the 3rd and 2nd pins of the communication chip N3. The 1st pin of the communication chip N3 is connected to the 3.3V power supply and grounded through a capacitor C5. The 5th and 8th pins of the communication chip N3 are respectively connected to the 3.3V power supply through a resistor R4 and a resistor R5. The 6th and 7th pins of the communication chip N3 are respectively grounded through a resistor R8 and a resistor R9. A resistor R6 is connected between the 5th and 6th pins, and a resistor R7 is connected between the 7th and 8th pins.

[0033] The 5th pin of the communication chip N3 is connected to the 1st and 4th pins of the interface chip X1. The 6th pin of the communication chip N3 is connected to the 2nd and 5th pins of the interface chip X1. The 8th pin of the communication chip N3 is connected to the 6th and 8th pins of the interface chip X1. The 7th pin of the communication chip N3 is connected to the 9th and 10th pins of the interface chip.

[0034] The 11th and 12th pins of the interface chip X1 are connected in parallel to the PA13 pin of the chip N1 and are connected to the 3.3V power supply through the resistor R15. The 13th and 14th pins are connected to the +5V power supply. The 16th and 17th pins are grounded. The 18th and 19th pins are connected in parallel to the PA14 pin of the chip N1 and are grounded through the resistor R10. The 20th and 21st pins are grounded. The 22nd and 23rd pins are connected in parallel to the NRST pin of the chip N1.

[0035] The NRST pin of the chip N1 is also connected to the 3.3V power supply through the resistor R11 and is grounded through the capacitor C8.

[0036] The BOOT0 pin of the chip N1 is connected to the 3.3V power supply and the ground terminal through the resistor R17 and the resistor R18 respectively.

[0037] The +5V power supply is also grounded through the parallel-connected capacitors C15, C16, and C17.

[0038] The 3.3V power supply is also grounded through the parallel-connected capacitors C9 to C14.

[0039] By designing a battery information storage component composed of a power supply circuit, an RS422 communication module, an MCU system, etc., which is built inside the battery stack and the outer shell of the battery pack. Through the maintenance interface of the battery pack, the DC5V power supply is input into the battery information storage component, and then the DC / DC power supply circuit converts the DC5V into the DC3.3V working power supply for the MCU processor and the RS422 communication module. The storage component starts to work, performs necessary software and hardware initialization, and then waits to send the battery pack status information. After receiving the battery pack status information, the storage component can store the power supply information (such as the total voltage of the battery pack, discharge current, internal temperature, etc.) and query the battery information (such as the cumulative power consumption time of the battery, battery model, battery number, and battery factory date, etc.), and can upload the lithium battery pack status and capacity information through RS422 communication for monitoring the battery status information to ensure the reliable and safe use of the battery. When the battery information storage component is not connected to the DC5V power supply, it is in a non-working state and does not consume the power of the lithium thionyl chloride battery.

[0040] As Figures 1 to 7 shown, the lithium thionyl chloride battery pack includes battery cells and a battery information storage component. The battery is designed with a maintenance interface. When the battery works, the battery controller inputs the DC5V power supply into the battery information storage component, and then the DC / DC power supply circuit converts the DC5V into the DC3.3V working power supply for the MCU processor and the RS422 communication module. The storage component starts to work, performs necessary software and hardware initialization, and then waits to send the battery pack status information.

[0041] An external device sends a power supply information message packet to the battery every minute. After receiving the power supply information message packet, the embedded software of the battery information storage component increases the cumulative working time of the battery and adds a record in the non-volatile storage space. The record content includes status information such as cumulative time, battery voltage, discharge current, and internal temperature. The remaining capacity of the battery is estimated through an algorithm, automatically stored in the Flash of the MCU, and the status and capacity information of the lithium battery pack can be uploaded through RS422 communication for detecting the battery status information to ensure the reliable and safe use of the battery. When the battery is not working, the stored information can be queried. After receiving the query message packet, the embedded software of the battery information storage component can send a reply message packet within 2 ms through RS422 communication. The content of the reply message packet includes information such as the cumulative power consumption time of the battery, battery model, battery number, and battery factory date.

[0042] By designing an intelligent lithium thionyl chloride battery with the function of storing information, the storage and query of information such as the cumulative power consumption time of the battery, battery model, battery number, and battery factory date can be realized. During the battery power supply process, the status information such as the total voltage, discharge current, and internal temperature of the battery pack is automatically recorded, and the battery status information can be uploaded through RS422 communication. The battery power is scientifically estimated to avoid the sharp drop in voltage at the end of the battery operation, which may cause damage to the electrical equipment and ensure the reliable use of the battery. The internal temperature of the battery is controlled to avoid thermal runaway and potential safety problems. When the battery is not working, the stored information can be queried to understand information such as the cumulative power consumption time of the battery, battery model, battery number, and battery factory date, which is conducive to tracing the production information of the battery product and tracking and detecting the working status of the product. An intelligent lithium thionyl chloride battery with the function of storing information has been practically applied in a certain model of strategic weapon system in our country, significantly improving the performance of the equipment power supply system, indirectly promoting the upgrading of our country's equipment system, and is expected to be popularized and applied in other new weapon systems.

Claims

1. An intelligent monitoring system for lithium thionyl chloride battery information, characterized in that: It includes a battery pack and a battery information storage system installed between the battery pack and the housing. The battery information storage system includes an MCU processor, a power supply circuit, and an RS422 communication module. The power supply circuit is connected to the battery control module in the battery pack, converts the +5V power output by the battery control module into 3.3V to supply power to the MCU processor and the RS422 communication module. The MCU processor records the cumulative battery working time, battery voltage, discharge current, and internal temperature in its Flash, and estimates the remaining capacity of the battery pack. The RS422 communication module uploads the information recorded by the MCU processor to the host computer.

2. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 1, characterized in that: The MUC processor is the JS32F103CB chip N1. The VBAT pin of the chip N1 is connected to the power supply circuit. The power supply circuit includes a power conversion chip U2. The input terminal of the power supply chip U2 is connected to the battery control module through a fuse F1 and grounded through a diode V1 and a capacitor C6. The output terminal outputs 3.3V power and is grounded through a resistor R13 and a polarized resistor. The PD0 pin of the chip N1 is connected to the output terminal of the chip N2 through a resistor R1. The input terminal of the chip N2 is connected to the 3.3V power supply and grounded through a parallel-connected capacitor C2 and a capacitor C3.

3. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 2, wherein: The PB2 pin of the chip N1 is connected to the 3.3V power supply through a resistor R12 and grounded through a resistor R14.

4. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 3, wherein: The PB10 and PB11 pins of the chip N1 are connected to the 8th and 7th pins of the storage chip U1. The 1st, 3rd, 4th, and 6th pins of the storage chip U1 are grounded, and the 2nd pin is connected to the +5V power supply. The 8th and 7th pins of the storage chip U1 are also respectively connected to the +5V power supply through a resistor R2 and a resistor R3.

5. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 4, characterized in that: The PB6 and PB7 pins of the chip N1 are respectively connected to the 3rd and 2nd pins of the communication chip N3. The 1st pin of the communication chip N3 is connected to the 3.3V power supply and grounded through a capacitor C5. The 5th and 8th pins are respectively connected to the 3.3V power supply through a resistor R4 and a resistor R5. The 6th and 7th pins are respectively grounded through a resistor R8 and a resistor R9. A resistor R6 is connected between the 5th and 6th pins, and a resistor R7 is connected between the 7th and 8th pins.

6. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 5, characterized in that: The 5th pin of the communication chip N3 is connected to the 1st and 4th pins of the interface chip X1. The 6th pin of the communication chip N3 is connected to the 2nd and 5th pins of the interface chip X1. The 8th pin of the communication chip N3 is connected to the 6th and 8th pins of the interface chip X1. The 7th pin of the communication chip N3 is connected to the 9th and 10th pins of the interface chip. The 11th and 12th pins of the interface chip X1 are connected in parallel to the PA13 pin of the chip N1 and connected to the 3.3V power supply through a resistor R15. The 13th and 14th pins are connected to the +5V power supply. The 16th and 17th pins are grounded. The 18th and 19th pins are connected in parallel to the PA14 pin of the chip N1 and grounded through a resistor R10. The 20th and 21st pins are grounded. The 22nd and 23rd pins are connected in parallel to the NRST pin of the chip N1.

7. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 6, wherein: The NRST pin of the chip N1 is also connected to the 3.3V power supply through a resistor R11 and grounded through a capacitor C8.

8. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 2, wherein: The BOOT0 pin of chip N1 is connected to the 3.3V power supply and the ground terminal through resistor R17 and resistor R18 respectively.

9. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 1, wherein: The +5V power supply is also grounded through capacitors C15, C16, and C17 connected in parallel.

10. The intelligent monitoring system for lithium thionyl chloride battery information according to claim 1, characterized in that: The 3.3V power supply is also grounded through capacitors C9 to C14 connected in parallel.

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