Power consumption test circuit and device

Abstract

The utility model discloses a power consumption test circuit and device, comprising a microcontroller, an analog-to-digital converter, an operational amplifier unit and a plurality of detection modules, and each detection module comprises a first detection unit, a second detection unit and a third detection unit; when the operation amplifier unit tests the battery product single board, the output voltage drop between the first detection unit and the second detection unit is obtained, and the test amplification voltage is obtained through voltage amplification; the analog-to-digital converter performs voltage sampling on the test amplification voltage to obtain a test sampling voltage; and the microcontroller obtains a test sampling current corresponding to the test sampling voltage and compares the test sampling current with a preset normal current value to obtain a power consumption test result. According to the embodiment of the utility model, the simple power consumption test circuit can obtain the test sampling current of the battery product single board and compare the test sampling current with the preset normal current value to obtain the power consumption test result, so that the power consumption analysis process is simplified, and the hardware cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to power consumption test fixture technical field, concretely relates to power consumption test circuit and device. BACKGROUND

[0002] With the development of smart watch, now some high-end smart watch endurance time is all 10 days above, and product appearance is also made increasingly light and thin, therefore to power consumption requirement is higher and higher. In addition to smart watch, battery product will have high requirement to power consumption. But battery product hardware single board, due to its complexity, when mass production, partial battery product single board power consumption may be high, and the reason that power consumption is high may be different from research and development design, generally may be process problem, also may be incoming material problem, thereby causing short circuit, chip body abnormality of certain module of battery product hardware single board, thereby causing power consumption to be high. In order to guarantee the consistency of power consumption of battery product single board before leaving factory, the function test before leaving factory will have power consumption test to screen power consumption bad products. However, at present, when battery product single board cost is higher and bad products appear, need to combine software analysis and disassembly mainboard device to troubleshoot fault point, leading to that power consumption analysis of bad products is difficult and analysis efficiency is low. CONTENT OF UTILITY MODEL

[0003] The utility model provides power consumption test circuit and device, aims at solving the problem of prior art in the case where battery product single board cost is higher and bad products appear, need to combine software analysis and disassembly mainboard device to troubleshoot fault point, leading to that power consumption analysis of bad products is difficult and analysis efficiency is low.

[0004] Firstly, the utility model provides a kind of power consumption test circuit, it includes: microcontroller, analog-digital converter, operational amplifier unit and several detection modules, each detection module in the several detection modules includes first detection unit, second detection unit and third detection unit;The first detection unit, the second detection unit and the third detection unit are respectively connected with VIN test point, VOUT test point and EN test point on battery product single board;The first detection unit is connected with the second detection unit, and the first detection unit is also connected with the input end of the operational amplifier unit;The second detection unit is also connected with the input end of the operational amplifier unit;The output end of the operational amplifier unit is connected with the analog-digital converter;The analog-digital converter is connected with the microcontroller;The microcontroller is also connected with the first detection unit, the second detection unit and the third detection unit;

[0005] The operational amplifier unit is configured to, when the microcontroller controls the first detection unit, the second detection unit and the third detection unit to test the battery product single board, obtain an output voltage drop between the first detection unit and the second detection unit, and obtain a test amplified voltage after voltage amplification.

[0006] The analog-to-digital converter is configured to sample the test amplified voltage to obtain a test sampling voltage.

[0007] The microcontroller is configured to obtain a test sampling current corresponding to the test sampling voltage, and compare the test sampling current with a preset normal current value to obtain a power consumption test result.

[0008] Further, the first detection unit includes a first relay, a first resistor and a first MOS tube; a first control pin of the first relay is connected to a power supply through the first resistor, a second control pin of the first relay is connected to a drain of the first MOS tube, a first load pin of the first relay is configured to be connected to a VIN test point on the battery product single board through a first connection probe, and a second load pin of the first relay is connected to the operational amplifier unit; a gate of the first MOS tube is connected to the microcontroller, and a source of the first MOS tube is grounded.

[0009] Further, the second detection unit includes a second relay and a second resistor; a first control pin of the second relay is connected to the power supply through the second resistor, a second control pin of the second relay is connected to the drain of the first MOS tube, a first load pin of the second relay is configured to be connected to a VOUT test point on the battery product single board through a second connection probe, and a second load pin of the second relay is connected to the operational amplifier unit.

[0010] Further, the third detection unit includes a third relay, a third resistor and a second MOS tube; a first control pin of the third relay is connected to the power supply through the third resistor, a second control pin of the third relay is connected to a drain of the second MOS tube, a first load pin of the third relay is configured to be connected to an EN test point on the battery product single board through a third connection probe, and a second load pin of the third relay is grounded; a gate of the second MOS tube is connected to the microcontroller, and a source of the second MOS tube is grounded.

[0011] Further, the operational amplifier unit comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and an operational amplifier; a first end of the fourth resistor is connected with a second load pin of the first relay, and a second end of the fourth resistor is connected with a second load pin of the second relay; a first end of the fifth resistor is connected with the first end of the fourth resistor, a second end of the fifth resistor is grounded through the seventh resistor, and the second end of the fifth resistor is also connected with a same-direction input end of the operational amplifier; a first end of the sixth resistor is connected with the second end of the fourth resistor, a second end of the sixth resistor is connected with an opposite-direction input end of the operational amplifier, and the second end of the sixth resistor is also connected with the analog-to-digital converter through the eighth resistor.

[0012] In a second aspect, the utility model provides a kind of power consumption test device, it includes the power consumption test circuit of the first aspect described above, still include test platform, three-axis motion platform, test fixture fixing seat and infrared thermometer;The three-axis motion platform is located on the test platform;Test fixture fixing seat is located in one end of Z-axis movement component in the three-axis motion platform;The test fixture corresponding to the power consumption test circuit is located on the test fixture fixing seat;Test site for placing the battery product single board to be tested is also provided on the test platform;The infrared thermometer is used to detect whether the battery product single board placed on the test site is temperature anomaly;The three-axis motion platform is used to drive the test fixture fixed on the test fixture fixing seat to move to the test site when the infrared thermometer detects that the battery product single board placed on the test site does not exist temperature anomaly;The test fixture corresponding to the power consumption test circuit is used to connect and power consumption test to obtain power consumption test result for the battery product single board placed on the test site.

[0013] Further, the three-axis motion platform comprises an X-axis movement component, a Y-axis movement component and the Z-axis movement component;The Y-axis movement component is located on the test platform;The bottom end fixed block of the Z-axis movement component is located on the Y-axis sliding block of the Y-axis movement component;The first end fixed block of the X-axis movement component is located on the Z-axis sliding block of the Z-axis movement component;The test fixture fixing seat is fixedly arranged on the second end of the X-axis movement component.

[0014] Further, the area of the test site is greater than the total area of the plurality of battery product single boards to be tested.

[0015] In a third aspect, the utility model further provides a kind of power consumption test device, it includes the power consumption test circuit of the first aspect described above, and at least two detection modules are included in the power consumption test circuit.

[0016] Further, the power consumption test circuit comprises two detection modules connected in parallel, and the two detection modules are respectively a first detection module and a second detection module, and the first detection module and the second detection module are connected with the microcontroller.

[0017] Compared with the prior art, the utility model provides power consumption test circuit and device, including microcontroller, adc, operational amplifier unit and a plurality of detection module, a plurality of detection module each detection module includes first detection unit, second detection unit and third detection unit, first detection unit, second detection unit and third detection unit are connected with VIN test point, VOUT test point and EN test point on battery product single board respectively, first detection unit is connected with second detection unit, and first detection unit is also connected with the input end of operational amplifier unit, second detection unit is also connected with the input end of operational amplifier unit, the output of operational amplifier unit is connected with adc, adc is connected with microcontroller, microcontroller is also connected with first detection unit, second detection unit and third detection unit, operational amplifier unit is used to when microcontroller controls first detection unit, second detection unit and third detection unit test battery product single board, obtains the output voltage drop between first detection unit and second detection unit and obtains test amplification voltage after voltage amplification, adc is used to voltage sampling test amplification voltage and obtains test sampling voltage, microcontroller is used to obtain the test sampling current corresponding to test sampling voltage and compares with preset normal current value, obtains power consumption test result, and the embodiment of the utility model can obtain test sampling current of battery product single board and compare with preset normal current value through simple power consumption test circuit, obtains power consumption test result, simplifies power consumption analysis process, and the hardware cost of implementation is lower. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0019] Figure 1 It is the schematic block diagram of the power consumption test circuit provided by the utility model;

[0020] Figure 2 It is the circuit schematic drawing that the power consumption test circuit provided by the utility model is connected to the battery product single board;

[0021] Figure 3 It is the structural schematic diagram of the power consumption test device in the power consumption test device provided by the utility model;

[0022] Figure 4 a schematic block diagram of the power consumption test device. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] The terms of direction mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only the directions of the attached drawings. Therefore, the terms of direction are used to explain and understand the present application, but not to limit the present application. In addition, in the drawings, the structures similar or identical are indicated by the same reference numerals.

[0025] It should be understood that the terms "comprise" and "include" as used in the specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0026] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0027] It should be further understood that the term "and / or" as used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0028] Please also refer to Figure 1 and Figure 2 , Figure 1 a schematic block diagram of the power consumption test circuit provided by the present application, Figure 2 a circuit schematic diagram of the power consumption test circuit provided by the present application connected to a single board of a battery product. As Figure 1 and Figure 2As shown, the power consumption test circuit provided by the utility model embodiment comprises: a microcontroller 10, an analog-to-digital converter 20, an operational amplifier unit 30 and a plurality of detection modules, each of the plurality of detection modules 40 comprises a first detection unit 41, a second detection unit 42 and a third detection unit 43; the first detection unit 41, the second detection unit 42 and the third detection unit 43 are connected with a VIN test point, a VOUT test point and an EN test point on a battery product single board 100 respectively; the first detection unit 41 is connected with the second detection unit 42, and the first detection unit 41 is also connected with the input end of the operational amplifier unit 30; the second detection unit 42 is also connected with the input end of the operational amplifier unit 30; the output end of the operational amplifier unit 30 is connected with the analog-to-digital converter 20; the analog-to-digital converter 20 is connected with the microcontroller 10; the microcontroller 10 is also connected with the first detection unit 41, the second detection unit 42 and the third detection unit 43;

[0029] The operational amplifier unit 30 is used for obtaining the output voltage drop between the first detection unit 41 and the second detection unit 42 after voltage amplification when the microcontroller controls the first detection unit 41, the second detection unit 42 and the third detection unit 43 to test the battery product single board, and obtaining a test amplification voltage;

[0030] The analog-to-digital converter 20 is used for voltage sampling the test amplification voltage to obtain a test sampling voltage;

[0031] The microcontroller 10 is used for obtaining a test sampling current corresponding to the test sampling voltage, and comparing the test sampling current with a preset normal current value to obtain a power consumption test result.

[0032] In the embodiment, when the battery product single board 100 is tested by the power consumption test circuit in the embodiment, the first detection unit 41, the second detection unit 42 and the third detection unit 43 need to be connected with the VIN test point, the VOUT test point and the EN test point on the battery product single board 100 respectively. More specifically, the VIN test point, the VOUT test point and the EN test point on the battery product single board 100 can be regarded as reserved TP1 test points, TP2 test points and TP3 test points respectively, and the three test points are used for production test power consumption bad analysis.

[0033] After the connection of the above power consumption test circuit and the battery product single board 100 is completed, VIN on the battery product single board 100 is the input voltage of the input power supply, VOUT is the output voltage, the third MOS tube Q3 is used as a switch of the battery product single board 100 and is controlled by the fourth MOS tube Q4. The EN test point controls the conduction and closing of the fourth MOS tube Q4 through the tenth resistor R10 (the value of R10 is, for example, 1MΩ, that is, a resistor with a large resistance value) and can also reduce the power consumption of the battery product single board 100. When the EN test point outputs a high level, the fourth MOS tube Q4 is turned on, and the fourth MOS tube Q4 pulls the gate of the third MOS tube Q3 to the ground in the on state, so that the third MOS tube Q3 is turned on, and VOUT on the battery product single board 100 is equal to VIN, and the battery product single board 100 works normally. When the EN test point outputs a low level, the fourth MOS tube Q4 is closed, the third MOS tube Q3 is also closed, and the battery product single board 100 stops working.

[0034] Moreover, the microcontroller 10 first controls the gate of the first MOS tube Q1 to be connected to a high level, and the first detection unit 41 and the second detection unit 42 are turned on; wherein, Figure 2 The fourth resistor R4 is in parallel with the third MOS tube Q3 as a detection resistor. Then the microcontroller 10 controls the gate of the second MOS tube Q2 to be connected to a high level, so that the third detection unit 43 is turned on. At this time, the TP3 test point is pulled down to 0V by the third detection unit 43, the fourth MOS tube Q4 and the third MOS tube Q3 are both closed, and the current flows from VIN through the connection probe on the TP1 test point, flows through the fourth resistor R4, flows to the drain of the third MOS tube Q3, and outputs an output voltage VOUT.

[0035] The voltage drop formed by the current flowing through the fourth resistor R4 can be obtained by the operational amplifier unit 30 and then amplified to obtain a test amplified voltage. Then the analog-to-digital converter 20 voltage samples the test amplified voltage to obtain a test sampling voltage. Finally, the microcontroller 10 obtains a test sampling current corresponding to the test sampling voltage and compares it with a preset normal current value to obtain a power consumption test result. For example, when the test sampling current exceeds the preset normal current value (for example, set to 1mA), the power consumption test abnormal result is taken as the power consumption test result; when the test sampling current does not exceed the preset normal current value, the power consumption test normal result is taken as the power consumption test result.

[0036] In an embodiment, as Figure 1 and Figure 2As shown, the first detection unit 41 includes a first relay RLY1, a first resistor R1 and a first MOS tube Q1; the first control pin of the first relay RLY1 is connected to the power supply VCC through the first resistor R1, the second control pin of the first relay RLY1 is connected to the drain of the first MOS tube Q1, the first load pin of the first relay RLY1 is used to be connected to the VIN test point on the battery product single board 100 through the first connection probe, and the second load pin of the first relay RLY1 is connected to the operational amplifier unit 30; the gate of the first MOS tube Q1 is connected to the microcontroller, and the source of the first MOS tube Q1 is grounded.

[0037] In the embodiment, when the microcontroller 10 first controls the gate of the first MOS tube Q1 to be high, the electromagnetic coil in the first relay RLY1 in the first detection unit 41 is powered on, so that the first load pin and the second load pin thereof are turned on. At the same time, the second detection unit 41 is also turned on. Through the above circuit setting, the electrical characteristics of the relay are used to effectively control the parallel relationship between the detection resistor in the operational amplifier unit and the third MOS tube on the battery product single board, thereby facilitating the subsequent power consumption test.

[0038] In an embodiment, as shown in Figure 1 and Figure 2 As shown, the second detection unit 42 includes a second relay RLY2 and a second resistor R2; the first control pin of the second relay RLY2 is connected to the power supply VCC through the second resistor R2, the second control pin of the second relay RLY2 is connected to the drain of the first MOS tube Q1, the first load pin of the second relay RLY2 is used to be connected to the VOUT test point on the battery product single board 100 through the second connection probe, and the second load pin of the second relay RLY2 is connected to the operational amplifier unit 30.

[0039] In the embodiment, when the microcontroller 10 first controls the gate of the first MOS tube Q1 to be high, the electromagnetic coil in the second relay RLY2 in the second detection unit 42 is powered on, so that the first load pin and the second load pin thereof are turned on. At the same time, the first detection unit 41 is also turned on. Through the above circuit setting, the electrical characteristics of the relay are used to effectively combine the first detection unit to control the parallel relationship between the detection resistor in the operational amplifier unit and the third MOS tube on the battery product single board, thereby facilitating the subsequent power consumption test.

[0040] In an embodiment, as shown in Figure 1 and Figure 2As shown, the third detection unit 43 includes a third relay RLY3, a third resistor R3 and a second MOS tube Q2; a first control pin of the third relay RLY3 is connected to a power supply VCC through the third resistor R3, a second control pin of the third relay RLY3 is connected to a drain of the second MOS tube Q2, a first load pin of the third relay RLY3 is used to be connected to an EN test point on the battery product single board 100 through a third connecting probe, and a second load pin of the third relay RLY3 is grounded; a gate of the second MOS tube Q2 is connected to the microcontroller 10, and a source of the second MOS tube Q2 is grounded.

[0041] In the embodiment, when the microcontroller 10 first controls the gate of the first MOS tube Q1 to be connected to a high level and then controls the gate of the second MOS tube Q2 to be connected to a high level, the TP3 test point is pulled down to 0V by the third relay RLY3, the fourth MOS tube Q4 and the third MOS tube Q3 are both closed, and a current flows from the VIN through the connecting probe on the TP1 test point, flows through the detection resistor in the operational amplifier unit, and then flows to the drain of the third MOS tube Q3 and outputs an output voltage VOUT. Through the above circuit setting, the electrical characteristics of the relay are used to effectively combine the control of the detection resistor in the operational amplifier unit and the parallel relationship of the third MOS tube on the battery product single board, thereby facilitating subsequent power consumption tests.

[0042] In an embodiment, as shown in Figure 1 and Figure 2 As shown, the operational amplifier unit 30 includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 and an operational amplifier AMP; a first end of the fourth resistor R4 is connected to a second load pin of the first relay RLY1, and a second end of the fourth resistor R4 is connected to a second load pin of the second relay RLY2; a first end of the fifth resistor R5 is connected to the first end of the fourth resistor R4, a second end of the fifth resistor R5 is grounded through the seventh resistor R7, and the second end of the fifth resistor R5 is also connected to a same-direction input end of the operational amplifier AMP; a first end of the sixth resistor R6 is connected to the second end of the fourth resistor R4, a second end of the sixth resistor R6 is connected to an opposite-direction input end of the operational amplifier AMP, and the second end of the sixth resistor R6 is also connected to the analog-to-digital converter 20 through the eighth resistor R8.

[0043] In the embodiment, when the operational amplifier unit 30 adopting the specific circuit structure is used for power consumption test, current flows through the fourth resistor R4, a voltage drop V1-V2 is formed on the fourth resistor R4, the voltage drop V1-V2 passes through the characteristics of the operational amplifier AMP, and according to the feedback resistor in the figure, V1*R7 / (R7+R5)=(V2-V3)*(R6 / (R6+R8))+V3, wherein V3 is the current output voltage corresponding to the output end of the operational amplifier AMP; according to the calculation, V1*R7 / (R5+R7)-V2*R6 / (R6+R8)=V3*R8 / (R6+R8); after substituting the specific resistance values of the resistors, V3=N*(V1-V2) is obtained, N is an adjustment parameter calculated based on the specific resistance values of the resistors. The adjustment parameter can adjust the amplification factor, convert the weak current flowing through the fourth resistor R4 into a voltage V3, and then sample through the analog-to-digital converter 20, so that the microcontroller 10 obtains the corresponding voltage (i.e. test sampling voltage), and the test sampling current flowing through the fourth resistor R4 is obtained through calculation, and the test sampling current is compared with the preset normal current value, so as to determine whether the power consumption of the battery product single board is normal.

[0044] It can be seen that in the embodiment of the utility model, the test sampling current of the battery product single board can be obtained and compared with the preset normal current value through the simple power consumption test circuit, the power consumption test result is obtained, the power consumption analysis process is simplified, and the hardware cost is low.

[0045] The utility model also provides a kind of power consumption test device, it is a kind of three-axis movement implementation mode. Figure 3 As shown in the figure, it includes the power consumption test circuit 101 described in the preceding embodiment, and further includes a test platform 110, a three-axis motion platform 120, a test fixture fixing seat 130 and an infrared temperature measuring instrument 140; the three-axis motion platform 120 is arranged on the test platform 110; the test fixture fixing seat 130 is arranged at one end of the Z-axis motion assembly in the three-axis motion platform 120; the test fixture corresponding to the power consumption test circuit 101 is arranged on the test fixture fixing seat 130; the test platform 110 is further provided with a test site 150 for placing the battery product single board to be tested; the infrared temperature measuring instrument 140 is used to detect whether the battery product single board placed on the test site 150 has temperature anomaly; the three-axis motion platform 120 is used to drive the test fixture fixed on the test fixture fixing seat 130 to move to the test site 150 when the infrared temperature measuring instrument 140 detects that the battery product single board placed on the test site 150 does not have temperature anomaly; the test fixture corresponding to the power consumption test circuit 101 is used to connect the battery product single board placed on the test site 150 and obtain the power consumption test result through power consumption test.

[0046] In the embodiment, the power consumption test device includes all the technical solutions of the power consumption test circuit in the embodiment, therefore, the power consumption test device at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described in detail here.

[0047] When the power consumption test device is used, the PCB coordinates of the battery product single board placed on the test site 150 can be acquired first, the specific PCB coordinate positions of the VIN test point, the VOUT test point and the EN test point in the battery product single board are determined, and are written into the controller of the three-axis motion platform 120 in advance, so that the three-axis motion platform 120 can drive the power consumption test circuit 101 on the test fixture fixed seat 130 to move to the specified position on the test site 150 and make the first detection unit, the second detection unit and the third detection unit in the power consumption test circuit correspondingly connected probes inserted into the VIN test point, the VOUT test point and the EN test point in the battery product single board, so as to realize the connection with the battery product single board. In specific implementation, if the battery product single board is a standardized module and the positions of the VIN test point, the VOUT test point and the EN test point are fixed, the power consumption test of the standardized battery product single board can be completed by the power consumption test device in the application. Of course, in specific implementation, if the battery product single board is not a standardized module, a vision module (such as a camera) can also be arranged on the three-axis motion platform 120 to specifically locate the VIN test point, the VOUT test point and the EN test point in the battery product single board, and then drive the power consumption test circuit 101 on the test fixture fixed seat 130 to move to the test site 150 and connect with the above-mentioned three test points.

[0048] For example, the first detection unit is inserted into the VIN test point of the battery product single board through the first connection probe, the second detection unit is inserted into the VOT test point of the battery product single board through the second connection probe, and the third detection unit is inserted into the EN test point of the battery product single board through the third connection probe. The first connection probe and the second connection probe can also be connected to an ammeter. The first connection probe and the second connection probe can be set to the same length, and the length of the first connection probe. Through this setting, when the first connection probe and the second connection probe are first connected to the circuit of the battery product single board, the circuit of the battery product single board still works normally. As the first connection probe and the second connection probe continue to be inserted, the third connection probe is also connected to the EN test point. Because the third connection probe is grounded, the EN test point is pulled low, the fourth MOS tube Q4 is closed, and the third MOS tube Q3 is closed. The circuit of the battery product single board is disconnected, but because VIN and VOUT are in the circuit of the battery product single board, the current through the ammeter obtains VOUT to the power consumption test circuit, and the ammeter can read the test sampling current of the power consumption test circuit. The microcontroller 10 obtains the test sampling current corresponding to the test sampling voltage, and compares it with the preset normal current value to obtain the power consumption test result. For example, when the test sampling current exceeds the preset normal current value (such as 1 mA), the power consumption test abnormal result is taken as the power consumption test result; when the test sampling current does not exceed the preset normal current value, the power consumption test normal result is taken as the power consumption test result. In the above test process, the original circuit of the battery product single board is not changed, and the module power consumption is directly measured, which greatly reduces the difficulty of analysis and positioning.

[0049] In an embodiment, as shown in Figure 3 The three-axis motion platform 120 includes an X-axis motion assembly 121, a Y-axis motion assembly 122, and a Z-axis motion assembly 123. The Y-axis motion assembly 122 is arranged on the test platform 110. The bottom end fixed block 1232 of the Z-axis motion assembly 123 is arranged on the Y-axis sliding block 1221 of the Y-axis motion assembly 122. The first end fixed block of the X-axis motion assembly 121 is arranged on the Z-axis sliding block 1231 of the Z-axis motion assembly 123. The test fixture fixed seat 130 is fixedly arranged on the second end of the X-axis motion assembly 121.

[0050] In the embodiment, when the test site 150 is arranged below the power consumption test circuit 101 arranged on the test fixture fixing seat 130, the three-axis motion platform 120 can control the test fixture fixing seat 130 to move in the Y-axis direction and the Z-axis direction, and does not need to move in the X-axis direction. Through the above arrangement, the three-axis motion platform can quickly drive the test fixture fixing seat and the power consumption test circuit arranged thereon to align the battery product single board placed on the test site and connect the corresponding test points, so as to perform subsequent function test.

[0051] In an embodiment, as shown in the figure, Figure 3 The area of the test site 150 is greater than the total area of the plurality of battery product single boards to be tested.

[0052] In the embodiment, a plurality of battery product single boards to be tested can also be placed on the test site 150 during specific implementation, so that the plurality of battery product single boards to be tested are synchronously tested, and the area of each sub-test site in the test site 150 can be equal to the area of the battery product single board to be tested.

[0053] The utility model also provides a kind of power consumption test device, it is the implementation mode of control panel switching test circuit. As shown in the figure, Figure 4 The power consumption test device 200 includes the power consumption test circuit of any of the preceding embodiments, and at least two detection modules are included in the power consumption test circuit.

[0054] In an embodiment, the power consumption test circuit includes two detection modules arranged in parallel, and are respectively referred to as a first detection module 241 and a second detection module 242, and the first detection module 241 and the second detection module 242 are connected with the microcontroller.

[0055] In the embodiment, the power consumption test device in the utility model embodiment includes all the technical solutions of the power consumption test circuit in the embodiment, so the power consumption test device at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here.

[0056] The difference between the implementation mode of the power consumption test circuit is that it can be connected with multiple detection modules, and each detection module can be connected with a battery product single board for testing. Specifically, the microcontroller selects one of the detection modules and the corresponding battery product single board for testing. In specific implementation, it is not limited to the two detection modules in the above example, and more detection modules can be connected in parallel to test multiple battery product single boards.

[0057] The utility model provides a power consumption test circuit and device, including microcontroller, adc, operational amplifier unit and a plurality of detection module, every detection module in a plurality of detection module includes first detection unit, second detection unit and third detection unit, first detection unit, second detection unit and third detection unit are connected with VIN test point, VOUT test point and EN test point on battery product single board respectively, first detection unit is connected with second detection unit, and first detection unit is still connected with the input of operational amplifier unit, second detection unit is still connected with the input of operational amplifier unit, the output of operational amplifier unit is connected with adc, adc is connected with microcontroller, microcontroller is still connected with first detection unit, second detection unit and third detection unit, operational amplifier unit is used for when microcontroller controls first detection unit, second detection unit and third detection unit carry out the test to battery product single board, obtains the output voltage drop between first detection unit and second detection unit and passes through voltage amplification, obtains test amplification voltage, adc is used for voltage sampling to test amplification voltage, obtains test sampling voltage, microcontroller is used for obtaining the test sampling current corresponding with test sampling voltage, and compares with preset normal current value, obtains power consumption test result, the embodiment of the utility model can obtain the test sampling current of battery product single board and compare with preset normal current value through simple power consumption test circuit, obtains power consumption test result, simplifies power consumption analysis process, and the hardware cost of realization is lower.

[0058] The above is only the specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements in the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be the protection scope of claims.

Claims

1. A power consumption test circuit, characterized by, The device comprises a microcontroller, an analog-to-digital converter, an operational amplifier unit and a plurality of detection modules, each of the plurality of detection modules comprises a first detection unit, a second detection unit and a third detection unit; the first detection unit, the second detection unit and the third detection unit are connected with a VIN test point, a VOUT test point and an EN test point on a single board of a battery product respectively; the first detection unit is connected with the second detection unit, and the first detection unit is also connected with an input end of the operational amplifier unit; the second detection unit is also connected with the input end of the operational amplifier unit; an output end of the operational amplifier unit is connected with the analog-to-digital converter; the analog-to-digital converter is connected with the microcontroller; the microcontroller is also connected with the first detection unit, the second detection unit and the third detection unit. The operational amplifier unit is used to obtain a test amplification voltage by amplifying an output voltage drop between the first detection unit and the second detection unit when the microcontroller controls the first detection unit, the second detection unit and the third detection unit to test the single board of the battery product. The analog-to-digital converter is used to obtain a test sampling voltage by voltage sampling the test amplification voltage. The microcontroller is used to obtain a test sampling current corresponding to the test sampling voltage, and compare the test sampling current with a preset normal current value to obtain a power consumption test result.

2. The power consumption test circuit of claim 1, wherein, The first detection unit comprises a first relay, a first resistor and a first MOS tube; a first control pin of the first relay is connected with a power supply through the first resistor, a second control pin of the first relay is connected with a drain of the first MOS tube, a first load pin of the first relay is used to be connected with the VIN test point on the single board of the battery product through a first connecting probe, and a second load pin of the first relay is connected with the operational amplifier unit; a gate of the first MOS tube is connected with the microcontroller, and a source of the first MOS tube is grounded.

3. The power consumption test circuit of claim 2, wherein, The second detection unit comprises a second relay and a second resistor; a first control pin of the second relay is connected with the power supply through the second resistor, a second control pin of the second relay is connected with the drain of the first MOS tube, a first load pin of the second relay is used to be connected with the VOUT test point on the single board of the battery product through a second connecting probe, and a second load pin of the second relay is connected with the operational amplifier unit.

4. The power consumption test circuit of claim 3, wherein, The third detection unit comprises a third relay, a third resistor and a second MOS tube; a first control pin of the third relay is connected with the power supply through the third resistor, a second control pin of the third relay is connected with a drain of the second MOS tube, a first load pin of the third relay is used to be connected with the EN test point on the single board of the battery product through a third connecting probe, and a second load pin of the third relay is grounded; a gate of the second MOS tube is connected with the microcontroller, and a source of the second MOS tube is grounded.

5. The power consumption test circuit of claim 4, wherein, The operational amplifier unit comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and an operational amplifier; a first end of the fourth resistor is connected with a second load pin of the first relay, and a second end of the fourth resistor is connected with a second load pin of the second relay; a first end of the fifth resistor is connected with the first end of the fourth resistor, a second end of the fifth resistor is grounded through the seventh resistor, and the second end of the fifth resistor is also connected with a same-direction input end of the operational amplifier; a first end of the sixth resistor is connected with the second end of the fourth resistor, a second end of the sixth resistor is connected with an opposite-direction input end of the operational amplifier, and the second end of the sixth resistor is also connected with the analog-to-digital converter through the eighth resistor.

6. A power consumption testing apparatus characterized by comprising: The power consumption test circuit comprises a test platform, a three-axis motion platform, a test fixture fixing seat and an infrared temperature measuring instrument; the three-axis motion platform is arranged on the test platform; the test fixture fixing seat is arranged at one end of a Z-axis motion assembly in the three-axis motion platform; a test fixture corresponding to the power consumption test circuit is arranged on the test fixture fixing seat; a test site for placing a single board of a battery product to be tested is further arranged on the test platform; the infrared temperature measuring instrument is used for detecting whether the single board of the battery product placed on the test site is abnormal in temperature; the three-axis motion platform is used for driving the test fixture fixed on the test fixture fixing seat to move to the test site when the infrared temperature measuring instrument detects that the single board of the battery product placed on the test site is not abnormal in temperature; and the test fixture corresponding to the power consumption test circuit is used for connecting and testing the power consumption of the single board of the battery product placed on the test site to obtain a power consumption test result.

7. The power consumption testing apparatus according to claim 6, wherein The three-axis motion platform comprises an X-axis motion assembly, a Y-axis motion assembly and the Z-axis motion assembly; the Y-axis motion assembly is arranged on the test platform; a bottom end fixing block of the Z-axis motion assembly is arranged on a Y-axis sliding block of the Y-axis motion assembly; a first end fixing block of the X-axis motion assembly is arranged on a Z-axis sliding block of the Z-axis motion assembly; and the test fixture fixing seat is fixedly arranged at a second end of the X-axis motion assembly.

8. The power consumption testing apparatus of claim 7, wherein The area of the test site is greater than the total area of the single boards of the battery products to be tested.

9. A power consumption testing apparatus, characterized by comprising: The power consumption test circuit comprises at least two detection modules.

10. The power consumption testing apparatus of claim 9, wherein The power consumption test circuit comprises two detection modules arranged in parallel, and the two detection modules are respectively referred to as a first detection module and a second detection module; the first detection module and the second detection module are both connected with a microcontroller.

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