Storage battery parameter sensor terminal and patrol method thereof

Abstract

The invention discloses a storage battery parameter sensor terminal based on APP rapid patrol, which is used for occasions such as storage battery parameter sensing in an electric power backup power supply system, and at least comprises a control manager unit, the data communication unit, the signal indication unit, the parameter acquisition unit and the electric power supply unit are electrically connected with the control manager unit. The invention further discloses a corresponding patrol method. In the embodiment of the invention, the terminal has the functions of data storage, on-site calculation and judgment of prediction results of internal resistance inflection points and dischargeable capacity, and indication; a unit with an internet-of-things communication function is accessed, and a wireless communication module completes on-site APP quick patrol of the storage battery.

Description

Technical Field

[0001] The present invention relates to the technical field of battery parameter sensing in an electric power backup power supply system, and in particular to a battery parameter sensor terminal based on APP rapid inspection and an inspection method thereof. Background Art

[0002] With the rapid development of intelligent and information-based power equipment, the requirements for power equipment status monitoring are getting higher and higher. As an important device in a large number of backup power applications, battery status monitoring is particularly critical. At present, the status monitoring of main equipment in UPS, EPS, DC power supply, communication power supply and other system applications has been fully covered.

[0003] However, there are many brands of online battery monitoring equipment, and the test methods and sensor technologies vary, resulting in uneven test results and difficulty in forming accurate judgments. Since the test methods and sensor technologies used in various applications are different, the judgment results are misleading, resulting in misjudgments of the health status of the battery. This may not only mislead the assessment of the health status of the battery, but also affect the reliable power supply of the battery at critical moments, thus posing a threat to the stable operation of the power system. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the present invention proposes a battery parameter sensor terminal and a patrol method thereof, which can detect and analyze the real-time monitoring parameters of the battery in real time, can realize on-site APP rapid patrol of the battery, and improve the efficiency and accuracy of the patrol.

[0005] As one aspect of the present invention, a battery parameter sensor terminal is provided, which at least includes a control manager unit, and a data communication unit, a signal indication unit, a parameter acquisition unit and an electric power supply unit electrically connected to the control manager unit, wherein:

[0006] The parameter acquisition unit is connected to the pole of the monitored battery and is used to monitor the voltage, temperature and internal resistance in real time;

[0007] The control manager unit is used to calculate and judge the prediction results of the internal resistance inflection point and the dischargeable capacity based on the data obtained by the parameter acquisition unit to obtain the inspection results;

[0008] The data communication unit communicates with the host computer, PC or smart phone, and transmits the inspection results of the monitored battery in the control manager unit by quickly scanning the code through the on-site APP;

[0009] A signal indicating unit, used to indicate different states of the battery according to the monitoring results of the control management unit;

[0010] The power supply unit is used to provide working power for the internal circuit of the device.

[0011] Optionally, the power supply unit provides power for the entire device, and adopts an external low-voltage DC power supply to provide working power for the internal circuit of the device, including DC-DC conversion, 3.3V voltage regulation, and power indication circuit.

[0012] Optionally, the parameter acquisition unit is connected to the pole of the monitored battery to achieve real-time voltage and temperature monitoring and analog input of current during internal resistance testing, including a voltage acquisition unit, a temperature acquisition circuit, and a current acquisition circuit.

[0013] Optionally, the control manager unit includes a CPU control chip, a reset and crystal oscillator circuit, a communication interface, and a drive signal interface, which are used to convert, perform algorithm operations, store, perform state logic judgment, and upload data in real time on the data obtained by the parameter acquisition unit; the algorithm operations include at least internal resistance operations and capacity operations.

[0014] Optionally, the data communication unit adopts two different data output interfaces to realize 485 bus communication signal mode and Internet of Things 5G communication signal mode output.

[0015] Optionally, the signal indication unit performs different signal indications such as red light, green light, constant light, fast flashing, slow flashing, etc. according to different voltage, temperature, internal resistance, capacity results and corresponding threshold parameters set.

[0016] As another aspect of the present invention, there is also provided a method for patrolling using a battery parameter sensor terminal, which is implemented using the aforementioned device and comprises the following steps:

[0017] Step S1, connecting the pole of the monitored battery through the parameter acquisition unit to collect the voltage and temperature parameters of the battery in real time;

[0018] Step S2, performing battery internal resistance detection through a parameter acquisition unit according to a set time and obtaining internal resistance data;

[0019] Step S3, transmitting the collected voltage, temperature, and internal resistance data to the control manager unit for conversion, algorithm operation, storage, and state logic judgment;

[0020] Step S4, uploading the processed data to the upper computer or the APP on the smart phone in real time through the data communication unit by 485 bus communication or Bluetooth communication;

[0021] Step S5, according to the determination result of the control manager unit, the signal indicating unit indicates different states of the battery with different signals.

[0022] Optionally, in step S2, further comprising:

[0023] When performing internal resistance detection, the test load is added synchronously to collect voltage and current values ​​at multiple time points;

[0024] According to the collected voltage and current values, the internal resistance value at the corresponding time point is calculated using Ohm's law, and then the root mean square calculation is performed on multiple internal resistance values ​​to obtain the final single-cell internal resistance output result;

[0025] Based on the internal resistance data and the set battery nominal capacity, a fifth-order polynomial battery data model is used to perform capacity algorithm calculations to obtain the output result of the battery's dischargeable capacity.

[0026] Optionally, in step S4, further comprising:

[0027] In response to external inspection requests, the processed data is uploaded to the host computer or APP in real time through the data communication unit using 485 bus communication or Bluetooth communication; or

[0028] The results of voltage, temperature, internal resistance and capacity are stored regularly, and the monitoring data are sent to the host computer or APP in an active heartbeat manner through the data communication unit.

[0029] Optionally, the step S5 further comprises:

[0030] According to the voltage, temperature, internal resistance, capacity results and the corresponding threshold parameters set, the signal indication unit indicates different battery states with different signals such as red light, green light, constant light, fast flashing, slow flashing, etc.

[0031] The implementation of the embodiments of the present invention has the following beneficial effects:

[0032] The present invention provides a battery parameter sensor terminal and an inspection method thereof. The key parameters such as the voltage and temperature of the battery are collected in real time by a parameter collection unit, and after being processed by a control manager unit, they are accurately uploaded to a host computer in a bus communication mode, thus ensuring the real-time and accuracy of the monitoring data.

[0033] The terminal has built-in data storage, internal resistance inflection point and dischargeable capacity prediction algorithm, which can conduct a comprehensive assessment of the battery status on site and provide accurate battery health status information to operation and maintenance personnel.

[0034] By accessing the IoT communication function unit, the APP supports rapid inspection of batteries, which greatly improves maintenance efficiency and convenience and reduces operation and maintenance costs. At the same time, the LED signal indicator unit can intuitively display the battery status, which is convenient for rapid identification and handling of abnormal situations on site. Accurate battery status monitoring and evaluation helps to timely discover and handle potential faults, thereby ensuring that the battery can reliably supply power at critical moments and improve the overall stability of the power system.

[0035] In summary, the battery parameter sensor terminal provided by the present invention not only solves the key problems in online battery monitoring, but also improves the stability and operation and maintenance efficiency of the power system, and has significant technical advantages and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0037] Figure 1 A schematic structural diagram of an embodiment of a battery parameter sensor terminal provided by the present invention;

[0038] Figure 2 for Figure 1 Principle block diagram of the medium parameter acquisition unit;

[0039] Figure 3 for Figure 1 The circuit block diagram of the control manager unit in the middle;

[0040] Figure 4 A schematic diagram of the main process of an embodiment of a patrol method for a battery parameter sensor terminal provided by the present invention;

[0041] Figure 5 for Figure 4 Flowchart of the internal resistance calculation involved;

[0042] Figure 6 for Figure 4 Flowchart of the capacity calculations involved. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] like Figure 1FIG. 1 is a schematic diagram of a battery parameter sensor terminal according to an embodiment of the present invention; Figure 2 , Figure 3 As shown, in this embodiment, the battery parameter sensor terminal 1 at least includes a control manager unit 10, and a data communication unit 13, a signal indication unit 14, a parameter acquisition unit 12 and an electric power supply unit 15 electrically connected to the control manager unit 10, wherein:

[0045] The parameter acquisition unit 11 is connected to the pole of the monitored battery 2 through the tested battery interface 12, and is used to monitor the voltage, temperature and internal resistance in real time; specifically, the parameter acquisition unit 11 transmits the terminal voltage analog quantity to the control manager unit 10 after V / V conversion, and performs the battery internal resistance detection function according to the set time;

[0046] The control manager unit 10 is used to calculate and judge the prediction results of the internal resistance inflection point and the dischargeable capacity based on the data obtained by the parameter acquisition unit 11, and obtain the inspection results; specifically, the control manager unit 10 can perform such as conversion, algorithm operation, storage, and state logic judgment;

[0047] The data communication unit 13 communicates with the host computer 3, the PC or the smart phone, and transmits the inspection result of the monitored battery in the control manager unit 10 by quickly scanning the code through the on-site APP;

[0048] A signal indicating unit 14, used to indicate different states of the battery according to the monitoring result of the control management unit 10;

[0049] The power supply unit 15 is used to provide power for the internal circuit of the device. In a specific embodiment, the power supply unit 15 provides power for the entire device, using an external low-voltage DC power supply to provide power for the internal circuit of the device, including DC-DC conversion, 3.3V voltage regulation, and power indication circuit.

[0050] like Figure 2As shown, the parameter acquisition unit 11 is electrically connected to the pole of the monitored battery to realize real-time voltage and temperature monitoring, and analog input of current during internal resistance testing. It includes a voltage acquisition unit, a temperature acquisition circuit, and a current acquisition circuit. The acquisition circuit is connected to the pole of the tested battery, and its terminal voltage parameter analog data is isolated and converted into analog to digital data in real time to the control manager unit; the temperature acquisition circuit is connected to the negative pole of the tested battery, and its pole temperature parameter analog data is isolated and converted into analog to digital data in real time to the control manager unit; the current acquisition circuit is connected in series or installed in the discharge circuit between the load and the pole of the tested battery. When the internal resistance test command of the control manager unit is executed, the load current parameter sensed is converted into I / V, isolated, and converted into analog to digital data, and then sent to the control manager unit 10 together with the voltage parameter acquired synchronously from the acquisition circuit.

[0051] like Figure 3 As shown, the control manager unit 10 includes a CPU control chip, a reset and crystal oscillator circuit, a communication interface, and a drive signal interface, and is used to convert, calculate, store, determine state logic, and upload data in real time for the data obtained by the parameter acquisition unit; the algorithm calculation includes at least internal resistance calculation and capacity calculation, and the processes of the internal resistance calculation and capacity calculation can be respectively referred to Figure 5 and Figure 6 shown.

[0052] More specifically, the control manager unit 10 is the control management core unit of the device output by the present invention, including a CPU control chip, a reset and crystal oscillator circuit, a communication interface, and a drive signal interface. The CPU control chip performs voltage, current, and temperature parameter conversion, internal resistance algorithm calculation, and capacity algorithm calculation, and stores the results of voltage, temperature, internal resistance, and capacity and uploads them in real time through the bus communication unit. At the same time, the control manager unit judges the parameter limit violation according to the voltage, temperature, internal resistance, and capacity results and the corresponding threshold parameters set, and outputs an alarm signal light, wherein the implementation of the internal resistance calculation algorithm is completed and executed by the control manager unit, and each internal resistance test command execution time is 3 to 4 seconds, and the test load is added synchronously. During the execution and loading of this command, 200 voltage values ​​and current values ​​are collected synchronously, and then the 200 internal resistance values ​​at the corresponding time points are calculated using Ohm's law according to the 200 voltage values ​​and current values ​​at the collection time points, and then the calculated 200 internal resistance values ​​are calculated by root mean square. The final single-cell internal resistance output result is obtained; in addition, the implementation of the capacity calculation algorithm is completed by the software execution of the control manager unit, and the capacity calculation algorithm is based on the internal resistance data and the set battery nominal capacity. The data model of the battery is implemented using a fifth-order polynomial, and the output result of the battery dischargeable capacity is calculated according to the internal resistance value output by the internal resistance calculation algorithm; the reset and crystal oscillator unit provides the basic clock pulse signal necessary for the CPU control chip to work; the communication interface includes two communication interfaces, one for 485 bus communication and the other for Bluetooth wireless communication. The communication port of the CPU control chip realizes real-time upload of the data transmission of the protocol execution result to different host computer devices; the drive signal interface is an interface circuit that drives the signal indicator light by the I / O port of the CPU control chip.

[0053] In a specific example, the data communication unit 13 uses two different data output interfaces to realize the output of 485 bus communication signal mode and IoT 5G communication signal mode. Specifically, the data communication unit 13 can be designed as a 485 bus communication structure to complete the parallel communication and data transmission of multiple battery parameter sensor terminals of the present invention; at the same time, it can be designed as a Bluetooth communication structure, mainly using the on-site APP to quickly scan the code to read and transmit data;

[0054] It can be understood that, in a specific example, the data communication unit 13 belongs to two different interface communication modes of communication data transmission, which is used to isolate, amplify and transform the TTL transceiver signal output by the CPU control chip when executing the communication protocol, and finally output it in 485 bus communication signal mode and Internet of Things 5G communication signal mode. One completes the communication data transmission with the uplink external monitoring platform remote control system through the 485 bus; the two communication wireless interfaces communicate with the APP interface. The sensor terminal of the present invention acts as a lower computer in the communication structure, and the data can be uploaded to the server database through 485 or 5G communication methods, and the active heartbeat method is used to upload the monitoring data.

[0055] In a specific example, the signal indication unit 14 performs different signal indications such as red light, green light, constant light, fast flashing, slow flashing, etc. according to different voltage, temperature, internal resistance, capacity results and corresponding threshold parameters set.

[0056] It can be understood that the battery parameter sensor terminal based on APP quick inspection provided by the embodiment of the present invention realizes the real-time analysis and management of the online health status of the battery of the distributed power grid backup power supply, achieving the effect of quick inspection and precise operation and maintenance.

[0057] like Figure 4 As shown, an embodiment of a method for patrolling using a battery parameter sensor terminal provided by the present invention is shown, using Figures 1 to 3 The device is implemented, comprising the following steps:

[0058] Step S1, connecting the pole of the monitored battery through the parameter acquisition unit to collect the voltage and temperature parameters of the battery in real time;

[0059] Step S2, performing battery internal resistance detection through a parameter acquisition unit according to a set time and obtaining internal resistance data;

[0060] In a specific example, in step S2, it further includes:

[0061] When performing internal resistance detection, the test load is added synchronously to collect voltage and current values ​​at multiple time points;

[0062] According to the collected voltage and current values, the internal resistance value at the corresponding time point is calculated using Ohm's law, and then the root mean square calculation is performed on multiple internal resistance values ​​to obtain the final single-cell internal resistance output result;

[0063] Based on the internal resistance data and the set battery nominal capacity, a fifth-order polynomial battery data model is used to perform capacity algorithm calculations to obtain the output result of the battery's dischargeable capacity.

[0064] Step S3, the collected voltage, temperature, and internal resistance data are transmitted to the control manager unit for conversion, algorithm operation, storage, and state logic judgment; in this step, the algorithm operation at least includes internal resistance operation and capacity operation, and the processes of the internal resistance operation and capacity operation can be respectively referred to Figure 5 and Figure 6 shown.

[0065] Step S4, uploading the processed data to the upper computer or the APP on the smart phone in real time through the data communication unit by 485 bus communication or Bluetooth communication;

[0066] In a specific example, in step S4, further comprising:

[0067] In response to external inspection requests, the processed data is uploaded to the host computer or APP in real time through the data communication unit using 485 bus communication or Bluetooth communication; or

[0068] The results of voltage, temperature, internal resistance and capacity are stored regularly, and the monitoring data are sent to the host computer or APP in an active heartbeat manner through the data communication unit.

[0069] Step S5, according to the determination result of the control manager unit, the signal indicating unit indicates different states of the battery with different signals.

[0070] In a specific example, the step S5 further includes:

[0071] According to the voltage, temperature, internal resistance, capacity results and the corresponding threshold parameters set, the signal indication unit indicates different battery states with different signals such as red light, green light, constant light, fast flashing, slow flashing, etc.

[0072] For more details, please refer to and combine the above Figures 1 to 3 The description is not repeated here.

[0073] The implementation of the embodiments of the present invention has the following beneficial effects:

[0074] The present invention provides a battery parameter sensor terminal and an inspection method thereof. The key parameters such as the voltage and temperature of the battery are collected in real time by a parameter collection unit, and after being processed by a control manager unit, they are accurately uploaded to a host computer in a bus communication mode, thus ensuring the real-time and accuracy of the monitoring data.

[0075] The terminal has built-in data storage, internal resistance inflection point and dischargeable capacity prediction algorithm, which can conduct a comprehensive assessment of the battery status on site and provide accurate battery health status information to operation and maintenance personnel.

[0076] By accessing the IoT communication function unit, the APP supports rapid inspection of batteries, which greatly improves maintenance efficiency and convenience and reduces operation and maintenance costs. At the same time, the LED signal indicator unit can intuitively display the battery status, which is convenient for rapid identification and handling of abnormal situations on site. Accurate battery status monitoring and evaluation helps to timely discover and handle potential faults, thereby ensuring that the battery can reliably supply power at critical moments and improve the overall stability of the power system.

[0077] In summary, the battery parameter sensor terminal provided by the present invention not only solves the key problems in online battery monitoring, but also improves the stability and operation and maintenance efficiency of the power system, and has significant technical advantages and application value.

[0078] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0079] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A system that specifies the functions of a box or multiple boxes.

[0080] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A battery parameter sensor terminal, characterized in that: At least includes a control manager unit, and a data communication unit, a signal indication unit, a parameter acquisition unit and an electric power supply unit electrically connected to the control manager unit, wherein: The parameter acquisition unit is connected to the pole of the monitored battery and is used to monitor the voltage, temperature and internal resistance in real time; The control manager unit is used to calculate and judge the prediction results of the internal resistance inflection point and the dischargeable capacity based on the data obtained by the parameter acquisition unit to obtain the inspection results; The data communication unit communicates with the host computer, PC or smart phone, and transmits the inspection results of the monitored battery in the control manager unit by quickly scanning the code through the on-site APP; A signal indicating unit, used to indicate different states of the battery according to the monitoring results of the control management unit; The power supply unit is used to provide working power for the internal circuit of the device.

2. The terminal according to claim 1, characterized in that in: The power supply unit provides power for the entire device, adopts external low-voltage DC power supply to provide working power for the internal circuit of the device, and includes a DC-DC conversion circuit, a 3.3V voltage stabilizing circuit and a power indication circuit.

3. The terminal according to claim 2, characterized in that: in: The parameter acquisition unit is connected to the pole of the monitored battery to realize real-time voltage and temperature monitoring and analog input of current during internal resistance testing, and includes a voltage acquisition unit, a temperature acquisition circuit, and a current acquisition circuit.

4. The terminal according to claim 3, characterized in that: in: The control manager unit includes a CPU control chip, a reset and crystal oscillator circuit, a communication interface, and a drive signal interface, which are used to convert, perform algorithm operations, store, perform state logic judgment, and upload data in real time on the data obtained by the parameter acquisition unit; the algorithm operations include at least internal resistance operations and capacity operations.

5. The terminal according to claim 4, characterized in that: in: The data communication unit adopts two different data output interfaces to realize the output of 485 bus communication signal mode and Internet of Things 5G communication signal mode.

6. The terminal according to claim 5, characterized in that: in, The signal indication unit provides different signal indications such as red light, green light, constant light, fast flashing and slow flashing according to different voltage, temperature, internal resistance, capacity results and corresponding threshold parameters set.

7. A method for patrolling using a battery parameter sensor terminal, implemented by using the device according to any one of claims 1 to 6, characterized in that: The steps include: Step S1, connecting the pole of the monitored battery through the parameter acquisition unit to collect the voltage and temperature parameters of the battery in real time; Step S2, performing battery internal resistance detection through a parameter acquisition unit according to a set time and obtaining internal resistance data; Step S3, transmitting the collected voltage, temperature, and internal resistance data to the control manager unit for conversion, algorithm operation, storage, and state logic judgment; Step S4, uploading the processed data to the upper computer or the APP on the smart phone in real time through the data communication unit by 485 bus communication or Bluetooth communication; Step S5, according to the determination result of the control manager unit, the signal indicating unit indicates different states of the battery with different signals.

8. The method according to claim 7, characterized in that In step S2, further comprising: When performing internal resistance detection, the test load is added synchronously to collect voltage and current values ​​at multiple time points; According to the collected voltage and current values, the internal resistance value at the corresponding time point is calculated using Ohm's law, and then the root mean square calculation is performed on multiple internal resistance values ​​to obtain the final single-cell internal resistance output result; Based on the internal resistance data and the set battery nominal capacity, a fifth-order polynomial battery data model is used to perform capacity algorithm calculations to obtain the output result of the battery's dischargeable capacity.

9. The method according to claim 8, characterized in that In step S4, further comprising: In response to external inspection requests, the processed data is uploaded to the host computer or APP in real time through the data communication unit using 485 bus communication or Bluetooth communication; or The results of voltage, temperature, internal resistance and capacity are stored regularly, and the monitoring data are sent to the host computer or APP in an active heartbeat manner through the data communication unit.

10. The method according to claim 9, characterized in that The step S5 further comprises: According to the voltage, temperature, internal resistance, capacity results and the corresponding threshold parameters set, the signal indication unit indicates different battery states with different signals such as red light, green light, constant light, fast flashing and slow flashing.

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