Automatic charging and discharging testing device for mining battery

Abstract

The utility model provides an automatic charging and discharging testing device for a mining battery, which relates to the technical field of mining battery testing, and is characterized in that a main control module is connected with a mining battery to be tested through a constant-current electronic load module so as to control the mining battery to be tested to be maintained in a constant-current state; the main control module is connected with the to-be-tested mining battery through the charge and discharge control module, the charge and discharge control module is connected with the constant current electronic load module, and the main control module performs charge and discharge test on the to-be-tested mining battery through the charge and discharge control module and collects charge and discharge test data. According to the invention, automatic charging and discharging testing of the mining battery in a constant current state can be realized, the testing efficiency and accuracy are improved, and errors possibly caused by manual operation are avoided; the battery is always in a constant current state, uncertain factors in the test process are reduced, and the safety of device operation is improved; moreover, the device also effectively improves the data acquisition efficiency, can remotely monitor the battery test condition, and improves the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of mining battery testing, in particular to an automatic charging and discharging testing device for mining batteries. Background Art

[0002] In mining environments, battery safety is of paramount importance. Charge and discharge tests can be used to evaluate the stability of batteries under different conditions, ensuring that the batteries will not cause fire or explosion accidents due to overcharging, over-discharging or short circuits. They can also verify the basic performance indicators of batteries, such as capacity, energy density, cycle life, etc., to ensure that they meet the requirements of mining equipment.

[0003] Traditional battery charge and discharge test equipment is usually operated manually, and testers are required to frequently manually check the battery status during the test, which is prone to human error and low test efficiency. At the same time, traditional battery charge and discharge equipment often lacks the ability to monitor the battery charge and discharge power in real time and record battery data. Testers and personnel are unable to obtain and store real-time power data of the battery during the charge and discharge process, further increasing safety risks. Utility Model Content

[0004] In response to the shortcomings of the above-mentioned existing technologies, the utility model provides an automatic charging and discharging test device for mining batteries, which solves the technical problems in the existing technology that battery charging and discharging devices need to be manually controlled, are prone to errors, have low testing efficiency, and cannot record test data in real time.

[0005] The utility model provides an automatic charge and discharge test device for mining batteries, comprising a main control module, a charge and discharge control module, a constant current electronic load module, a data storage module and a wireless communication module;

[0006] The main control module is connected to the mining battery to be tested through the constant current electronic load module to control the mining battery to be tested to maintain a constant current state;

[0007] The main control module is connected to the mining battery to be tested through the charge and discharge control module, and the charge and discharge control module is connected to the constant current electronic load module. The main control module performs a charge and discharge test on the mining battery to be tested through the charge and discharge control module, and collects charge and discharge test data;

[0008] The data storage module is connected to the main control module and is used to store the charge and discharge test data;

[0009] The wireless communication module is connected to the main control module for wireless communication interaction.

[0010] Optionally, the charge and discharge control module includes a charge and discharge control circuit, and the charge and discharge control circuit includes a first optical coupler, a second optical coupler, a first PMOS transistor, a second PMOS transistor, and a third PMOS transistor;

[0011] An external input power supply is connected to the source of the first PMOS transistor, a gate of the first PMOS transistor is connected to the ground terminal, and a drain of the first PMOS transistor is connected to the drain of the second PMOS transistor;

[0012] The first signal input terminal of the main control module is connected to the input terminal of the first optical coupler, and the output terminal of the first optical coupler is connected to the gate of the first PMOS transistor;

[0013] The second signal input end of the main control module is connected to the input end of the second optical coupler, the output end of the second optical coupler is connected to the gate of the second PMOS tube, and the source of the second PMOS tube is connected to the mining battery to be tested;

[0014] The source of the third PMOS tube is connected to the drain of the first PMOS tube, the gate of the third PMOS tube is connected to the ground end, and the drain of the third PMOS tube is connected to the constant current electronic load module.

[0015] Optionally, the charge and discharge control module further includes a zero-drift bidirectional current detector;

[0016] The positive input terminal of the zero-drift bidirectional current detector is connected to the drain of the first PMOS transistor, the negative input terminal of the zero-drift bidirectional current detector is connected to the drain of the second PMOS transistor, and the output terminal of the zero-drift bidirectional current detector is connected to the analog-to-digital conversion interface of the main control module;

[0017] The zero-drift bidirectional current detector is used to detect the charge and discharge current of the mining battery to be tested to obtain charge and discharge current data, and send the charge and discharge current data to the main control module.

[0018] Optionally, the charge and discharge control module further includes a voltage detection circuit, and the voltage detection circuit includes a first resistor, a second resistor and a first capacitor;

[0019] The voltage output end of the mining battery to be tested is connected to the first end of the first resistor, the second end of the first resistor is connected to the analog-to-digital conversion interface of the main control module, the second end of the first resistor is also connected to the ground end through the second resistor, and the first capacitor is connected in parallel with the second resistor.

[0020] Optionally, the constant current electronic load module includes a first operational amplifier, a second operational amplifier, a third resistor and a plurality of NMOS tubes;

[0021] The digital-to-analog conversion interface of the main control module is connected to the positive input terminal of the first operational amplifier, the negative input terminal of the first operational amplifier is connected to the ground terminal, and the output terminal of the first operational amplifier is connected to the positive input terminal of the second operational amplifier;

[0022] The negative input terminal of the second operational amplifier is connected to the first terminal of the third resistor, the second terminal of the third resistor is connected to the ground terminal, and the output terminal of the second operational amplifier is respectively connected to the gate of each of the NMOS transistors;

[0023] The gate of the NMOS tube is also connected to the ground terminal, the source of the NMOS tube is connected to the first end of the third resistor, and the drain of the NMOS tube is connected to the mining battery to be tested.

[0024] Optionally, the main control module, the charge and discharge control module, the constant current electronic load module, the data storage module and the wireless communication module are integrated on a printed circuit board.

[0025] Optionally, the automatic charge and discharge test device for mining batteries further includes an alarm module;

[0026] The alarm module is connected to the main control module and is used to issue an alarm when the main control module detects that the charge and discharge test data is abnormal.

[0027] Optionally, the automatic charge and discharge test device for mining batteries further includes a display module;

[0028] The display module is connected to the main control module and is used to display the charge and discharge test data.

[0029] Optionally, the wireless communication module is a WiFi module.

[0030] Optionally, the data storage module includes a memory card and a memory card slot;

[0031] The memory card is inserted into the memory card slot and connected to the main control module through the memory card slot.

[0032] The utility model provides an automatic charge and discharge test device for mining batteries. The main control module controls the constant current electronic load module and the charge and discharge control module to work together, so as to realize automatic charge and discharge testing of mining batteries under constant current state, thereby improving test efficiency and accuracy and avoiding errors that may be caused by manual operation. The constant current electronic load module is used to keep the battery in a constant current state at all times, thereby forming consistent test conditions, reducing uncertainties in the test process, eliminating deviations caused by current fluctuations, and more accurately evaluating battery performance. At the same time, the maximum current can also be limited to improve the safety of device operation. The main control module can monitor and control the charge and discharge process of the battery in real time through the charge and discharge control module to ensure that the battery operates within a safe range, thereby collecting charge and discharge test data in real time, improving data acquisition efficiency, and using the data storage module to store data for easy query and review. The wireless communication module supports wireless communication interaction and can remotely monitor the battery test status, so that testers can promptly discover abnormal conditions and take measures, thereby improving work efficiency.

[0033] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0034] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the overall structure of a mining battery automatic charge and discharge test device in one embodiment provided in this application;

[0037] Figure 2 This is an overall circuit diagram of the charge and discharge control circuit of the automatic charge and discharge test device for mining batteries in one embodiment provided by the present application;

[0038] Figure 3 This is an overall circuit diagram of a voltage detection circuit of a mining battery automatic charge and discharge test device in one embodiment provided by the present application;

[0039] Figure 4 This is a circuit diagram of a constant current electronic load module of a mining battery automatic charge and discharge test device in one embodiment provided in this application.

[0040] In the picture:

[0041] U1, first optocoupler; U2, second optocoupler; U3, zero-drift bidirectional current detector; U4, first operational amplifier; U5, second operational amplifier;

[0042] Q1, first PMOS transistor; Q2, second PMOS transistor; Q3, third PMOS transistor; Q4, first NMOS transistor; Q5, second NMOS transistor; Q6, third NMOS transistor; Q7, fourth NMOS transistor;

[0043] D1, first diode; D2, second diode; D3, third diode;

[0044] C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor;

[0045] R1, the first resistor; R2, the second resistor; R3, the third resistor; R4, the fourth resistor; R5, the fifth resistor; R6, the sixth resistor; R7, the seventh resistor; R8, the eighth resistor; R9, the ninth resistor; R10, the tenth resistor; R11, the eleventh resistor; R12, the twelfth resistor; R13, the thirteenth resistor; R14, the fourteenth resistor; R15, the fifteenth resistor; R16, the sixteenth resistor; R17, the seventeenth resistor; R18, the eighteenth resistor; R19, the nineteenth resistor; R20, the twentieth resistor; R21, the twenty-first resistor; R22, the twenty-second resistor; R23, the twenty-third resistor; R24, the twenty-fourth resistor; R25, the twenty-fifth resistor; R26, the twenty-sixth resistor; R27, the twenty-seventh resistor; R28, the twenty-eighth resistor; R29, the twenty-ninth resistor;

[0046] P1, external input power supply; P2, mining battery to be tested;

[0047] IO1, the first signal input terminal of the main control module; IO2, the second signal input terminal of the main control module;

[0048] ADC_I, the current measurement channel of the analog-to-digital conversion interface of the main control module; ADC_V, the voltage measurement channel of the analog-to-digital conversion interface of the main control module; DAC, the digital-to-analog conversion interface of the main control module;

[0049] load+, the positive output terminal of the constant current electronic load module; load-, the negative output terminal of the constant current electronic load module;

[0050] +IN, positive input terminal of zero-drift bidirectional current detector; -IN, negative input terminal of zero-drift bidirectional current detector; REF, reference voltage input terminal of zero-drift bidirectional current detector; OUT, output terminal of zero-drift bidirectional current detector;

[0051] GND, ground terminal. DETAILED DESCRIPTION

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0054] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0055] The utility model provides a mining battery automatic charge and discharge test device, such as Figure 1 As shown, it includes a main control module, a charge and discharge control module, a constant current electronic load module, a data storage module and a wireless communication module; wherein the main control module is connected to the mining battery to be tested through the constant current electronic load module to control the mining battery to be tested to maintain a constant current state; the main control module is connected to the mining battery to be tested through the charge and discharge control module, and the charge and discharge control module is connected to the constant current electronic load module, the main control module performs charge and discharge tests on the mining battery to be tested through the charge and discharge control module, and collects charge and discharge test data; the data storage module is connected to the main control module for storing charge and discharge test data; the wireless communication module is connected to the main control module for wireless communication interaction.

[0056] The utility model provides an automatic charge and discharge test device for mining batteries. The main control module controls the constant current electronic load module and the charge and discharge control module to work together, so as to realize automatic charge and discharge testing of mining batteries under constant current state, thereby improving test efficiency and accuracy and avoiding errors that may be caused by manual operation. The constant current electronic load module is used to keep the battery in a constant current state at all times, thereby forming consistent test conditions, reducing uncertainties in the test process, eliminating deviations caused by current fluctuations, and more accurately evaluating battery performance. At the same time, the maximum current can also be limited to improve the safety of device operation. The main control module can monitor and control the charge and discharge process of the battery in real time through the charge and discharge control module to ensure that the battery operates within a safe range, thereby collecting charge and discharge test data in real time, improving data acquisition efficiency, and using the data storage module to store data for easy query and review. The wireless communication module supports wireless communication interaction and can remotely monitor the battery test status, so that testers can promptly discover abnormal conditions and take measures, thereby improving work efficiency.

[0057] Specifically, in the above embodiment, the charge and discharge control module includes a charge and discharge control circuit, which includes a first optical coupler U1, a second optical coupler U2, a first PMOS transistor Q1, a second PMOS transistor Q2, and a third PMOS transistor Q3; wherein, the external input power supply P1 is connected to the source of the first PMOS transistor Q1, the gate of the first PMOS transistor Q1 is connected to the ground terminal GND, and the drain of the first PMOS transistor Q1 is connected to the drain of the second PMOS transistor Q2; the first signal input terminal IO1 of the main control module is connected to the first optical coupler U1 The input end of the first optical coupler U1 is connected to the gate of the first PMOS tube Q1; the second signal input end IO2 of the main control module is connected to the input end of the second optical coupler U2, the output end of the second optical coupler U2 is connected to the gate of the second PMOS tube Q2, and the source of the second PMOS tube Q2 is connected to the mining battery to be tested; the source of the third PMOS tube Q3 is connected to the drain of the first PMOS tube Q1, the gate of the third PMOS tube Q3 is connected to the ground end, and the drain of the third PMOS tube Q3 is connected to the constant current electronic load module.

[0058] Specifically, if Figure 2As shown, the external input power supply P1 is 28V, the first output pin of the external input power supply P1 is connected to the source of the first PMOS transistor Q1, the first output pin of the external input power supply P1 is connected to the ground terminal GND, the gate of the first PMOS transistor Q1 is connected to the ground terminal GND through the fourth resistor R4, and the second capacitor C2 and the first diode D1 are respectively connected in parallel between the source and the gate of the first PMOS transistor Q1. At the same time, the first signal input terminal IO1 of the main control module is connected to the positive electrode of the light-emitting diode of the first optical coupler U1 through the fourteenth resistor R14, and the negative electrode of the light-emitting diode of the first optical coupler U1 is connected to the positive electrode of the light-emitting diode of the first optical coupler U1. The collector of the photosensitive transistor of the first optical coupler U1 is connected to the source of the first PMOS tube Q1, the emitter of the photosensitive transistor of the first optical coupler U1 is connected to the gate of the first PMOS tube Q1, the drain of the first PMOS tube Q1 is connected to the drain of the second PMOS tube Q2 via the second diode D2 and the fifth resistor R5, the source of the second PMOS tube Q2 is connected to the first input pin of the mining battery P2 to be tested, the second input pin of the mining battery P2 to be tested is connected to the ground terminal GND, and a fourth capacitor C4 and a first capacitor C5 are connected in parallel between the source and gate of the second PMOS tube Q2. Nine resistors R9, at the same time, the second signal input terminal IO2 of the main control module is connected to the positive electrode of the light-emitting diode of the first optical coupler U2 through the tenth resistor R10, the negative electrode of the light-emitting diode of the second optical coupler U2 is connected to the ground terminal, the collector of the phototransistor of the first optical coupler U2 is connected to the gate of the second PMOS tube Q2 through the eighth resistor R8, and the emitter of the phototransistor of the second optical coupler U2 is connected to the ground terminal GND. Based on this, the charge and discharge control circuit is further provided with a third PMOS tube Q3, and the drain of the third PMOS tube Q3 is connected to the positive output terminal load+ of the constant current electronic load module. The negative output terminal load- of the constant current electronic load module is connected to the ground terminal. The gate of the third PMOS transistor Q3 is connected to the ground terminal GND through the twelfth resistor R12 and the thirteenth resistor R13 in sequence. The source of the third PMOS transistor Q3 is connected to the cathode of the second diode D2. The first end of the eleventh resistor R11 is connected to the source of the third PMOS transistor Q3. The second end of the eleventh resistor R11 is connected between the twelfth resistor R12 and the thirteenth resistor R13. The anode of the third diode D3 is connected to the anode of the second diode D2. The cathode of the third diode D3 is connected to the second end of the eleventh resistor R11.

[0059] In this embodiment, the charge and discharge control circuit is based on the control of the main control module. When the first signal input terminal IO1 of the main control module outputs a low level and the second signal input terminal IO2 of the main control module outputs a high level, the first PMOS transistor Q1 and the second PMOS transistor Q2 are turned on. At this time, the external input power supply P1 can directly supply power to the mining battery P2 under test, and the mining battery under test is in a charging state. To switch the mining battery under test to a discharging state, the external input power supply P1 can be directly cut off. At this time, the third PMOS transistor Q3 is turned on, causing the mining battery P2 under test to be in a discharging state.

[0060] Furthermore, the charge and discharge control module also includes a zero-drift bidirectional current detector U3; the positive input terminal +IN of the zero-drift bidirectional current detector U3 is connected to the drain of the first PMOS tube Q1, the negative input terminal -IN of the zero-drift bidirectional current detector U3 is connected to the drain of the second PMOS tube Q2, and the output terminal of the zero-drift bidirectional current detector U3 is connected to the analog-to-digital conversion interface of the main control module; the zero-drift bidirectional current detector U3 is used to detect the charge and discharge current of the mining battery to be tested to obtain charge and discharge current data, and send the charge and discharge current data to the main control module.

[0061] Specifically, if Figure 2 As shown, the positive input terminal +IN of the zero-drift bidirectional current detector U3 is connected to the first end of the fifth resistor R5, the negative input terminal -IN of the zero-drift bidirectional current detector U3 is connected to the second end of the fifth resistor R5, the reference voltage input terminal REF of the zero-drift bidirectional current detector U3 is connected to the 2.5V reference voltage REF2.5V, the ground terminal of the zero-drift bidirectional current detector U3 is connected to the ground terminal GND, the output terminal OUT of the zero-drift bidirectional current detector U3 is connected to the first end of the sixth resistor R6, the second end of the sixth resistor R6 is connected to the current measurement channel ADC_I of the analog-to-digital conversion interface of the main control module, the second end of the sixth resistor R6 is also connected to the ground terminal GND through the seventh resistor R7, and the seventh resistor R7 is connected in parallel with the third capacitor C3.

[0062] In this embodiment, the zero-drift bidirectional current detector U3 is provided between the external input power supply P1 and the connection circuit of the mining battery P2 to be tested, and is used to monitor the charge and discharge current of the mining battery P2 to be tested in real time.

[0063] Furthermore, the charge and discharge control module also includes a voltage detection circuit, such as Figure 3As shown, the voltage detection circuit includes a first resistor R1, a second resistor R2 and a first capacitor C1; the voltage output terminal VBAT of the mining battery to be tested is connected to the first end of the first resistor R1, the second end of the first resistor R1 is connected to the analog-to-digital conversion interface of the main control module, the second end of the first resistor R1 is also connected to the ground terminal GND through the second resistor R2, and the first capacitor C1 is connected in parallel with the second resistor R2.

[0064] In this embodiment, in addition to detecting the current of the mining battery to be tested, the charge and discharge control module can also detect the voltage of the mining battery to be tested. Specifically, the first resistor R1 and the second resistor R2 are both voltage-dividing resistors. The voltage output terminal VBAT of the mining battery to be tested is input to the voltage measurement channel ADC_V of the analog-to-digital conversion interface of the main control module after the voltage is divided by the first resistor R1 and the second resistor R2.

[0065] Specifically, in the above embodiment, the constant current electronic load module includes a first operational amplifier U4, a second operational amplifier U5, a third resistor R3 and a plurality of NMOS tubes; the digital-to-analog conversion interface DAC of the main control module is connected to the positive input terminal of the first operational amplifier U4, the negative input terminal of the first operational amplifier U4 is connected to the ground terminal GND, and the output terminal of the first operational amplifier U4 is connected to the positive input terminal of the second operational amplifier U5; the negative input terminal of the second operational amplifier U5 is connected to the first end of the third resistor R3, the second end of the third resistor R3 is connected to the ground terminal GND, and the output terminal of the second operational amplifier U5 is respectively connected to the gate of each NMOS tube; the gate of the NMOS tube is also connected to the ground terminal, the source of the NMOS tube is connected to the first end of the third resistor, and the drain of the NMOS tube is connected to the mining battery to be tested.

[0066] Specifically, if Figure 4As shown, the digital-to-analog conversion interface DAC of the main control module is connected to the first end of the fifteenth resistor R15, the second end of the fifteenth resistor R15 is connected to the positive input terminal of the first operational amplifier U4, the second end of the fifteenth resistor R15 is also connected to the ground terminal GND through the sixteenth resistor R16, the fifth capacitor C5 is connected in parallel with the sixteenth resistor R16, the first end of the seventeenth resistor R17 is connected to the ground terminal GND, the second end of the seventeenth resistor R17 is connected to the negative input terminal of the first operational amplifier U4, the seventeenth resistor R17 is also connected to the output terminal of the first operational amplifier U4 through the eighteenth resistor R18, and the first operational amplifier U4 also receives a 12V power supply. The output terminal of the first operational amplifier U4 is connected to the first end of the nineteenth resistor R19, the second end of the nineteenth resistor R19 is connected to the positive input terminal of the second operational amplifier U5, the second end of the nineteenth resistor R19 is further connected to the ground terminal GND through the twentieth resistor R20, the sixth capacitor C6 is connected in parallel with the twentieth resistor R20, the first end of the third resistor R3 is connected to the negative input terminal of the second operational amplifier U5, and the second end of the third resistor R3 is connected to the ground terminal GND; in this application, a total of four NMOS tubes are provided, among which the output terminal of the second operational amplifier U5 is connected to the first end of the twenty-first resistor R21, the twenty-first resistor R2 The second end of the NMOS transistor Q1 is connected to the gate of the first NMOS transistor Q4, the gate of the second NMOS transistor Q5 is connected to the second end of the twenty-first resistor R21 via the twenty-fourth resistor R24 ​​and the twenty-second resistor R22 in sequence, the gate of the third NMOS transistor Q6 is connected to the second end of the twenty-first resistor R21 via the twenty-sixth resistor R26 and the twenty-second resistor R22 in sequence, the gate of the fourth NMOS transistor Q7 is connected to the second end of the twenty-first resistor R21 via the twenty-eighth resistor R28 and the twenty-second resistor R22 in sequence, the gate of the first NMOS transistor Q4 is connected to the ground terminal GND via the twenty-third resistor R23, and the gate of the second NMOS transistor Q5 is connected to the ground terminal GND via the twenty-third resistor R24 ​​and the twenty-second resistor R22 in sequence. The gate is connected to the ground terminal GND through the twenty-fifth resistor R25, the gate of the third NMOS transistor Q6 is connected to the ground terminal GND through the twenty-seventh resistor R27, the gate of the fourth NMOS transistor Q7 is connected to the ground terminal GND through the twenty-ninth resistor R29, the source electrodes of the first NMOS transistor Q4, the second NMOS transistor Q5, the third NMOS transistor Q6 and the fourth NMOS transistor Q7 are all connected to the first end of the third resistor R3, and the drain electrodes of the first NMOS transistor Q4, the second NMOS transistor Q5, the third NMOS transistor Q6 and the fourth NMOS transistor Q7 are all connected to the positive output terminal load+ of the constant current electronic load module and the mining battery to be tested.

[0067] In this embodiment, the maximum voltage output by the digital-to-analog conversion interface DAC of the main control module is 2.5V. When the positive output terminal load+ is connected to the mining battery to be tested, the voltage drop generated by the current on the sampling resistor, that is, the third resistor R3, is not as high as the voltage of the positive input terminal of the second operational amplifier U5. At this time, the output terminal of the second operational amplifier U5 outputs a high potential, and all four NMOS tubes are turned on. Therefore, the sampling resistor, that is, the voltage drop on the third resistor R3 continues to increase until it exceeds the voltage of the positive input terminal of the second operational amplifier U5. At this time, The output end of the second operational amplifier U5 outputs a low potential, and all four NMOS tubes are turned off. This process is repeated, so the constant current I = ((VREF / (R19+R20))*R20) / R33, wherein the VREF reference voltage is generated by the digital-to-analog conversion interface DAC via the first operational amplifier U4, the resistance of the nineteenth resistor R19 is 100K, and the resistance of R20 is 10K, so the maximum constant current of this circuit = ((2.5 / (100+10))*10) / 0.1 = 2.27A.

[0068] Specifically, in the above embodiment, the main control module, the charge and discharge control module, the constant current electronic load module, the data storage module and the wireless communication module are integrated on a printed circuit board.

[0069] In this embodiment, each functional module adopts an integrated design and is integrated on a printed circuit board, which reduces the size of the device, making it more compact and easy to carry and deploy; effectively reduces external connections, reduces the risk of poor contact, and improves the reliability of the entire device; the integrated design can ensure compatibility and coordination between all functional modules, as well as flexibility in installation and use.

[0070] Specifically, in the above embodiment, Figure 1 As shown, the automatic charge and discharge test device for mining batteries also includes an alarm module; the alarm module is connected to the main control module and is used to alarm when the main control module detects abnormal charge and discharge test data.

[0071] In this embodiment, the main control module obtains the charge and discharge test data of the mining battery to be tested, specifically including the current size, voltage size, and overall temperature of the device during the charge and discharge process, and the above data should all be within a preset range. When one or more of the data exceeds the corresponding preset range, it means that the charge and discharge process is abnormal. On the one hand, the main control module needs to cut off the operation of the circuit to avoid further safety risks. On the other hand, it controls the alarm module to alarm. The specific form is not limited, and it can be a variety of alarms such as sound, light and electricity. It can remind the test personnel to pay attention to abnormal conditions on site to avoid more serious accidents, thereby improving the safety of the overall operation of the device.

[0072] Specifically, in the above embodiment, Figure 1 As shown, the automatic charge and discharge test device for mining batteries also includes a display module; the display module is connected to the main control module and is used to display charge and discharge test data.

[0073] In this embodiment, the display module can use an LCD (Liquid Crystal Display) screen. The LCD screen can realize the human-computer interaction function, the control function of the main control module, the communication function of the wireless communication module, and the alarm function of the alarm module. When the device starts running, the tester can set the working parameters of the device through the LCD screen, such as the constant current size of the electronic load and the parameters of the device connected to the Internet through the wireless communication module. During the charge and discharge test of the mining battery to be tested, the main control module detects the current, voltage, battery temperature and other parameters of the battery in real time during the charge and discharge process, and displays them on the LCD screen, so that the tester can observe the test data more intuitively.

[0074] Specifically, in the above embodiment, the wireless communication module is a WiFi module.

[0075] In this embodiment, compared to Bluetooth and other short-range wireless communication technologies, the WiFi module can cover a larger range, allowing long-distance data transmission, and the WiFi module provides a higher data transmission rate, which can quickly transmit large amounts of data, suitable for applications that require real-time updates and monitoring, and the device can be more easily integrated with other devices and systems; the WiFi module allows the device to be directly connected to the Internet to achieve remote monitoring and data sharing.

[0076] Specifically, in the above embodiment, the data storage module includes a memory card and a memory card slot; the memory card is inserted into the memory card slot and connected to the main control module through the memory card slot.

[0077] In this embodiment, the memory card can be used as a data backup medium to prevent data loss and increase data security. The memory card can also provide a large storage space for storing a large amount of charge and discharge test data, facilitating long-term tracking and analysis of battery performance. The memory card is small in size and light in weight, making it easy to carry and transfer data, making it suitable for on-site testing and mobile applications. When the storage space of the memory card is full, the old card can be simply removed and a new card inserted to continue storage without changing the hardware configuration. The memory card can also be used in other devices, such as computers, cameras, etc., thereby improving the utilization rate of the storage medium. Compared with built-in storage, the cost of the memory card is relatively low, which can reduce the overall cost of the device.

[0078] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A mining battery automatic charge and discharge test device, characterized in that: It includes a main control module, a charge and discharge control module, a constant current electronic load module, a data storage module and a wireless communication module; The main control module is connected to the mining battery to be tested through the constant current electronic load module to control the mining battery to be tested to maintain a constant current state; The main control module is connected to the mining battery to be tested through the charge and discharge control module, and the charge and discharge control module is connected to the constant current electronic load module. The main control module performs a charge and discharge test on the mining battery to be tested through the charge and discharge control module, and collects charge and discharge test data; The data storage module is connected to the main control module and is used to store the charge and discharge test data; The wireless communication module is connected to the main control module for wireless communication interaction.

2. The automatic charge and discharge test device for mining batteries according to claim 1, characterized in that: The charge and discharge control module includes a charge and discharge control circuit, and the charge and discharge control circuit includes a first optical coupler, a second optical coupler, a first PMOS tube, a second PMOS tube and a third PMOS tube; An external input power supply is connected to the source of the first PMOS transistor, a gate of the first PMOS transistor is connected to the ground terminal, and a drain of the first PMOS transistor is connected to the drain of the second PMOS transistor; The first signal input terminal of the main control module is connected to the input terminal of the first optical coupler, and the output terminal of the first optical coupler is connected to the gate of the first PMOS transistor; The second signal input end of the main control module is connected to the input end of the second optical coupler, the output end of the second optical coupler is connected to the gate of the second PMOS tube, and the source of the second PMOS tube is connected to the mining battery to be tested; The source of the third PMOS tube is connected to the drain of the first PMOS tube, the gate of the third PMOS tube is connected to the ground end, and the drain of the third PMOS tube is connected to the constant current electronic load module.

3. The automatic charge and discharge test device for mining batteries according to claim 2, characterized in that: The charge and discharge control module also includes a zero-drift bidirectional current detector; The positive input terminal of the zero-drift bidirectional current detector is connected to the drain of the first PMOS transistor, the negative input terminal of the zero-drift bidirectional current detector is connected to the drain of the second PMOS transistor, and the output terminal of the zero-drift bidirectional current detector is connected to the analog-to-digital conversion interface of the main control module; The zero-drift bidirectional current detector is used to detect the charge and discharge current of the mining battery to be tested to obtain charge and discharge current data, and send the charge and discharge current data to the main control module.

4. The automatic charge and discharge test device for mining batteries according to claim 3, characterized in that: The charge and discharge control module further includes a voltage detection circuit, and the voltage detection circuit includes a first resistor, a second resistor and a first capacitor; The voltage output end of the mining battery to be tested is connected to the first end of the first resistor, the second end of the first resistor is connected to the analog-to-digital conversion interface of the main control module, the second end of the first resistor is also connected to the ground end through the second resistor, and the first capacitor is connected in parallel with the second resistor.

5. The automatic charge and discharge test device for mining batteries according to claim 1, characterized in that: The constant current electronic load module includes a first operational amplifier, a second operational amplifier, a third resistor and a plurality of NMOS tubes; The digital-to-analog conversion interface of the main control module is connected to the positive input terminal of the first operational amplifier, the negative input terminal of the first operational amplifier is connected to the ground terminal, and the output terminal of the first operational amplifier is connected to the positive input terminal of the second operational amplifier; The negative input terminal of the second operational amplifier is connected to the first terminal of the third resistor, the second terminal of the third resistor is connected to the ground terminal, and the output terminal of the second operational amplifier is respectively connected to the gate of each of the NMOS transistors; The gate of the NMOS tube is also connected to the ground terminal, the source of the NMOS tube is connected to the first end of the third resistor, and the drain of the NMOS tube is connected to the mining battery to be tested.

6. The automatic charge and discharge test device for mining batteries according to claim 1, characterized in that: The main control module, the charge and discharge control module, the constant current electronic load module, the data storage module and the wireless communication module are integrated on a printed circuit board.

7. The automatic charge and discharge test device for mining batteries according to claim 1, characterized in that: The automatic charge and discharge test device for mining batteries also includes an alarm module; The alarm module is connected to the main control module and is used to issue an alarm when the main control module detects that the charge and discharge test data is abnormal.

8. The automatic charge and discharge test device for mining batteries according to claim 1, characterized in that: The automatic charge and discharge test device for mining batteries also includes a display module; The display module is connected to the main control module and is used to display the charge and discharge test data.

9. The automatic charge and discharge test device for mining batteries according to claim 1, characterized in that: The wireless communication module is a WiFi module.

10. The automatic charge and discharge test device for mining batteries according to claim 1, characterized in that: The data storage module includes a memory card and a memory card slot; The memory card is inserted into the memory card slot and connected to the main control module through the memory card slot.

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