Multichannel parallel endurance test circuit and test system of earphone battery

Abstract

The utility model provides a multichannel parallel endurance test circuit and test system of an earphone battery. The multichannel parallel endurance test circuit of the earphone battery comprises an upper computer terminal module and a measuring equipment circuit. The measuring equipment circuit comprises a voltage measuring piece, a current measuring piece, a first resistor, a first electronic switching tube and a second electronic switching tube. The current measuring piece is connected with the positive electrode of a to-be-measured earphone battery and is connected with the negative electrode through the first electronic switching tube and the first resistor; and the voltage measuring piece is connected in parallel with the earphone battery to be measured through the second electronic switching tube. The upper computer terminal module controls the on-off of the first and second electronic switch tubes so as to collect the voltage and current data of the earphone battery to be tested. The circuit can be simultaneously connected with and independently control a plurality of measurement assemblies through a single upper computer, the test efficiency is improved, and data can be recorded and stored in real time, so that the effectiveness of measurement work is ensured. A user can set threshold values and conditions of automatic stop according to requirements, so that the circuit is suitable for intelligent scenes.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery life testing, and in particular to a multi-channel parallel battery life testing circuit and testing system for earphone batteries. Background Art

[0002] In the current headphone battery life testing technology, especially the battery life testing of TWS headphones, in order to accurately record the real-time current, voltage and time data of the device or battery during the battery life, it is usually necessary to rely on a desktop multimeter in conjunction with the host computer software for data collection and recording. The traditional testing method requires that each multimeter must be independently connected to a computer, and after manually setting the test parameters (including current and voltage recording selection and recording interval time), the host computer software is started to monitor and record the data. During this process, the host computer software will display the multimeter's curve of the headphone battery current and voltage changes in real time until the recording is manually stopped. Subsequently, the user needs to export the data in a timely manner and attach a curve chart for analysis.

[0003] However, existing testing methods have significant flaws and shortcomings. For example, because each multimeter must be independently connected to a computer, testing multiple devices requires a corresponding number of computers and multimeters, which greatly increases testing costs. Secondly, the computer cannot be moved or terminated at will during the test process, which limits the flexibility and convenience of the test. In addition, the host computer software that runs for a long time is prone to crashes, resulting in data loss, which not only affects the effectiveness of the test but also delays the test progress. After each round of testing, users need to save or export the data in a timely manner, otherwise the data will be at risk of being lost. Utility Model Content

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide an efficient multi-channel parallel battery life test circuit and test system for headphone batteries.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A multi-channel parallel battery life test circuit for an earphone battery comprises a host computer terminal module and a plurality of measuring device circuits, wherein the host computer terminal module is connected to the measuring device circuits.

[0007] Each measuring device circuit includes a measuring component, a first resistor, a first electronic switch tube, and a second electronic switch tube. The measuring component includes a voltage measuring component and a current measuring component. The first end of the current measuring component is used to connect to the positive electrode of the headphone battery to be tested, the second end of the current measuring component is connected to the first end of the voltage measuring component, the third end of the current measuring component is connected to the first end of the first electronic switch tube, the second end of the first electronic switch tube is connected to the first end of the first resistor, the control end of the first electronic switch tube is connected to the current measurement signal control end of the host computer terminal module, and the second end of the first resistor is used to connect to the negative electrode of the headphone battery to be tested.

[0008] The second end of the voltage measuring component is connected to the first end of the second electronic switch tube, the second end of the second electronic switch tube is respectively connected to the negative electrode of the headphone battery to be tested and the ground end, the control end of the second electronic switch tube is connected to the voltage measurement signal control end of the host computer terminal module, and the data acquisition end of the host computer terminal module is respectively connected to the fourth end of each of the current measuring components.

[0009] In one embodiment, the measuring device circuit further includes a second resistor, a first end of the second resistor is connected to the current measurement signal control end of the host terminal module, and a second end of the second resistor is connected to the control end of the first electronic switch tube.

[0010] In one embodiment, the measuring device circuit further includes a third resistor, a first end of the third resistor is connected to the voltage measurement signal control end of the host terminal module, and a second end of the third resistor is connected to the control end of the second electronic switch tube.

[0011] In one embodiment, the first electronic switch tube is an N-channel MOS tube.

[0012] In one embodiment, the second electronic switch tube is an N-channel MOS tube.

[0013] In one embodiment, the second resistor is an adjustable resistor.

[0014] In one embodiment, the third resistor is an adjustable resistor.

[0015] A testing system includes the multi-channel parallel battery life testing circuit for an earphone battery as described in any one of the above items.

[0016] Compared with the prior art, the present disclosure has at least the following advantages:

[0017] 1. The advantage of the multi-channel parallel battery life test circuit for headphone batteries mentioned above over traditional testing methods is that a single host computer terminal module can be connected to multiple measurement device circuits at the same time, and each measurement device circuit can be independently controlled, thereby improving the test efficiency of the multi-channel parallel battery life test circuit for headphone batteries and reducing the number of host computer terminal modules, thereby reducing the procurement cost of the multi-channel parallel battery life test circuit for headphone batteries. In addition, during the test process, the host computer terminal module can record and save data in real time, thereby preventing data loss to ensure the effectiveness of the measurement work. Furthermore, since the user can set the automatic stop threshold and conditions in the pre-installed software of the host computer terminal module according to needs, the test will be automatically stopped when the preset conditions are reached during the measurement process, thereby making the measurement process more intelligent, and thus making the multi-channel parallel battery life test circuit for headphone batteries suitable for intelligent scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A circuit diagram of a multi-channel parallel battery life test circuit for an earphone battery according to one embodiment;

[0020] Figure 2 This is the working principle diagram of the host computer terminal module. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0025] like Figure 1 As shown, a multi-channel parallel endurance test circuit 10 for an earphone battery according to an embodiment of the present disclosure includes a host computer terminal module and a plurality of measurement device circuits, wherein the host computer terminal module is connected to the measurement device circuit.

[0026] Each measuring device circuit includes a measuring component U1, a first resistor R3, a first electronic switch tube Q1 and a second electronic switch tube Q2. The measuring component U1 includes a voltage measuring component V and a current measuring component A. The first end of the current measuring component A is used to connect to the positive electrode of the headphone battery BAT to be tested, the second end of the current measuring component A is connected to the first end of the voltage measuring component V, the third end of the current measuring component A is connected to the first end of the first electronic switch tube Q1, the second end of the first electronic switch tube Q1 is connected to the first end of the first resistor R3, the control end of the first electronic switch tube Q1 is connected to the current measurement signal control end PWM1 of the host terminal module, and the second end of the first resistor R3 is used to connect to the negative electrode of the headphone battery BAT to be tested.

[0027] The second end of the voltage measuring component V is connected to the first end of the second electronic switch tube Q2. The second end of the second electronic switch tube Q2 is respectively connected to the negative electrode of the headphone battery BAT to be tested and the ground end. The control end of the second electronic switch tube Q2 is connected to the voltage measurement signal control end PWM2 of the host computer terminal module. The data acquisition end I / O of the host computer terminal module is respectively connected to the fourth end of each current measuring component A.

[0028] In this embodiment, when the host computer terminal module needs to obtain the current value of the headphone battery BAT to be tested, the current measurement signal control terminal PWM1 of the host computer terminal module outputs a high-level signal to the control terminal of the first electronic switch tube Q1, and at the same time, the voltage measurement signal control terminal PWM2 of the host computer terminal module outputs a low-level signal to the control terminal of the second electronic switch tube Q2, so that the voltage at the control terminal of the first electronic switch tube Q1 is greater than its threshold voltage, and the voltage at the control terminal of the second electronic switch tube Q2 is lower than its threshold voltage, thereby turning on the first electronic switch tube Q1 and turning off the second electronic switch tube Q2. At this point, the positive electrode of the headphone battery (BAT) under test outputs current to the current measuring device A, then flows to the first resistor R3, and then to the negative electrode of the headphone battery (BAT) under test. This creates a current loop with the headphone battery (BAT), the current measuring device A, the first electronic switch Q1, and the first resistor R3. This loop allows the current measuring device A to measure the current value of the headphone battery (BAT) under test. Finally, the data acquisition terminal I / O of the host computer terminal module obtains the current value of the headphone battery (BAT) under test through the fourth terminal of the current measuring device A and transmits the data to the host computer terminal. In this way, by synchronously collecting the voltage and current of each headphone battery under test, the efficiency of batch headphone battery life testing is effectively improved.

[0029] Furthermore, when the host computer terminal module needs to obtain the voltage value of the headphone battery BAT to be tested, the current measurement signal control terminal PWM1 of the host computer terminal module outputs a low-level signal to the control terminal of the first electronic switch tube Q1, and at the same time, the voltage measurement signal control terminal PWM2 of the host computer terminal module outputs a high-level signal to the control terminal of the second electronic switch tube Q2, so that the voltage at the control terminal of the first electronic switch tube Q1 is less than its threshold voltage, and the voltage at the control terminal of the second electronic switch tube Q2 is greater than its threshold voltage, thereby turning off the first electronic switch tube Q1 and turning on the second electronic switch tube Q2. Q2 is turned on; since the resistance of the current measuring component A in the circuit is very small and can be ignored, the first end of the voltage measuring component V is connected to the positive electrode of the headphone battery BAT to be tested through the current measuring component A, and the second end of the voltage measuring component V is connected to the negative electrode of the headphone battery BAT to be tested through the second electronic switch tube Q2, so that the voltage measuring component V can measure the voltage value across the headphone battery BAT to be tested. Finally, the data acquisition terminal I / O of the host terminal module obtains the voltage value of the headphone battery BAT to be tested through the fourth end of the current measuring component A and transmits the data to the host terminal.

[0030] Specifically, the host computer terminal module collects the current and voltage values of the headphone battery BAT to be tested through the measurement component U1, and the host computer terminal module can generate a curve of the current and voltage of the headphone battery BAT to be tested changing with time in real time on the software pre-installed on the host computer based on the collected data, and save the corresponding data in real time on the specified path, thereby avoiding the problem of data loss caused by the host computer crashing after a long test; in addition, the host computer terminal module can also set the automatic stop threshold and trigger conditions during the measurement process, and when the preset conditions are reached during the measurement process, the software pre-installed on the host computer will automatically stop the test; in addition, the host computer terminal module is connected to multiple measurement components U1 at the same time to perform multi-channel parallel endurance testing. For details of the specific working principle diagram, see Figure 2 .

[0031] The advantage of the multi-channel parallel battery life test circuit 10 for headphone batteries described above over traditional testing methods is that a single host computer terminal module can be connected to multiple measurement device circuits at the same time, and each measurement device circuit can be independently controlled, thereby improving the test efficiency of the multi-channel parallel battery life test circuit 10 for headphone batteries and reducing the number of host computer terminal modules, thereby reducing the procurement cost of the multi-channel parallel battery life test circuit 10 for headphone batteries. In addition, during the test process, the host computer terminal module can record and save data in real time, thereby preventing data loss to ensure the effectiveness of the measurement work. Furthermore, since the user can set the automatic stop threshold and conditions in the pre-installed software of the host computer terminal module according to needs, the test will be automatically stopped when the preset conditions are reached during the measurement process, thereby making the measurement process more intelligent, and thus making the multi-channel parallel battery life test circuit 10 for headphone batteries suitable for intelligent scenarios.

[0032] like Figure 1 As shown, in one embodiment, the measuring device circuit further includes a second resistor R1, a first end of which is connected to the current measurement signal control terminal PWM1 of the host terminal module, and a second end of which is connected to the control terminal of the first electronic switch Q1. In this embodiment, since the second resistor R1 is connected in series between the current measurement signal control terminal PWM1 and the control terminal of the first electronic switch Q1, it serves as a current limiter and can effectively limit the current flowing into the control terminal of the first electronic switch Q1, thereby preventing excessive current from flowing through the control terminal of the first electronic switch Q1, thereby ensuring stable operation of the first electronic switch Q1 and improving the stability of the measuring device circuit.

[0033] like Figure 1As shown, in one embodiment, the measuring device circuit further includes a third resistor R2, a first end of which is connected to the voltage measurement signal control terminal PWM2 of the host computer terminal module, and a second end of which is connected to the control terminal of the second electronic switch tube Q2. In this embodiment, because the third resistor R2 is connected in series between the voltage measurement signal control terminal PWM2 and the control terminal of the second electronic switch tube Q2, it acts as a current limiter and can effectively limit the current flowing into the control terminal of the second electronic switch tube Q2, thereby preventing excessive current from flowing through the control terminal of the second electronic switch tube Q2, thereby ensuring the stable operation of the second electronic switch tube Q2 and improving the stability of the measuring device circuit.

[0034] like Figure 1 As shown, in one embodiment, the first electronic switch Q1 is an N-channel MOS transistor. In this embodiment, the first electronic switch Q1 is an N-channel MOS transistor, with the first end of the first electronic switch Q1 serving as the drain of the N-channel MOS transistor, the second end of the first electronic switch Q1 serving as the source of the N-channel MOS transistor, and the control end of the first electronic switch Q1 serving as the gate of the N-channel MOS transistor. Its primary function in the measurement device circuit is to control the on / off state of the current loop. When the host terminal module needs to obtain the current value of the headphone battery BAT under test, the current measurement signal control end PWM1 outputs a high-level signal to the gate of the first electronic switch Q1, causing the gate voltage to exceed its threshold voltage, thereby turning on the first electronic switch Q1. As a result, the current output from the positive electrode of the headphone battery BAT under test can pass through the current measurement device A, the first electronic switch Q1, and the first resistor R3, ultimately flowing to the negative electrode of the headphone battery BAT under test, forming a complete current loop. In addition, the first electronic switch tube Q1 also has the characteristics of fast switching speed, small on-resistance, and low control power consumption, so that it can efficiently respond to the control signal of the host computer in the multi-channel parallel battery life test circuit 10 of the headphone battery, realize fast current loop switching, and thereby reduce energy loss in the on state and improve the working efficiency of the measuring equipment circuit.

[0035] like Figure 1As shown, in one embodiment, the second electronic switch Q2 is an N-channel MOS transistor. In this embodiment, the second electronic switch Q2 is an N-channel MOS transistor, with the first end of the second electronic switch Q2 serving as the drain of the N-channel MOS transistor, the second end of the second electronic switch Q2 serving as the source of the N-channel MOS transistor, and the control end of the second electronic switch Q2 serving as the gate of the N-channel MOS transistor. In the measurement device circuit, the second electronic switch Q2 primarily functions to control the on / off state of the voltage measurement circuit. When the host terminal module needs to obtain the voltage value of the headphone battery BAT under test, the voltage measurement signal control end PWM2 outputs a high-level signal to the gate of the second electronic switch Q2, causing the gate voltage to exceed its threshold voltage. This causes the second electronic switch Q2 to conduct, allowing the voltage measurement device V to be connected in parallel across the headphone battery BAT under test, forming a complete voltage measurement circuit. This allows the voltage measurement device V to measure the voltage across the headphone battery BAT under test.

[0036] like Figure 1 As shown, in one embodiment, the second resistor R1 is an adjustable resistor. In this embodiment, the second resistor R1 serves as an adjustable resistor, and its main function is to flexibly adjust the magnitude of the current flowing into the control end of the first electronic switch tube Q1. Since the control end of the first electronic switch tube Q1 is more sensitive to current, excessive current may cause damage or unstable operation, while excessive current may not allow it to conduct normally. Therefore, the second resistor R1 can accurately adjust the magnitude of the control end current according to the actual circuit requirements and the characteristics of the first electronic switch tube Q1. Specifically, when the upper computer terminal module outputs a high-level signal to control the first electronic switch tube Q1 to conduct, the adjustable resistor can limit the current intensity of the high-level signal, thereby ensuring that the first electronic switch tube Q1 can work stably and normally, thereby improving the stability of the multi-channel parallel endurance test circuit 10 of the headphone battery.

[0037] like Figure 1 As shown, in one embodiment, the third resistor R2 is an adjustable resistor. In this embodiment, the third resistor R2 serves as an adjustable resistor, and its main function is to flexibly adjust the magnitude of the current flowing into the control end of the second electronic switch tube Q2. The third resistor R2 can accurately adjust the magnitude of the control end current according to the actual circuit requirements and the characteristics of the second electronic switch tube Q2. Specifically, when the host terminal module outputs a high-level signal to control the conduction of the second electronic switch tube Q2, the adjustable resistor can limit the current intensity of the high-level signal, thereby ensuring that the second electronic switch tube Q2 can operate stably and normally, thereby improving the stability of the multi-channel parallel endurance test circuit 10 of the headphone battery.

[0038] A test system includes a multi-channel parallel battery life test circuit 10 for earphone batteries as described above. In this embodiment, when the host computer terminal module needs to obtain the current value of the earphone battery BAT to be tested, the current measurement signal control terminal PWM1 of the host computer terminal module outputs a high-level signal to the control terminal of the first electronic switch tube Q1, and at the same time, the voltage measurement signal control terminal PWM2 of the host computer terminal module outputs a low-level signal to the control terminal of the second electronic switch tube Q2, so that the voltage at the control terminal of the first electronic switch tube Q1 is greater than its threshold voltage, and the voltage at the control terminal of the second electronic switch tube Q2 is lower than its threshold voltage, thereby turning on the first electronic switch tube Q1 and turning off the second electronic switch tube Q2. At this time, the positive electrode of the headphone battery BAT to be tested outputs current to the current measuring device A and then flows to the first resistor R3. Then the current flows to the negative electrode of the headphone battery BAT to be tested, so that the headphone battery BAT to be tested, the current measuring device A, the first electronic switch tube Q1 and the first resistor R3 together form a current loop, and then the current measuring device A measures the current value of the headphone battery BAT to be tested through the current loop. Finally, the data acquisition terminal I / O of the host computer terminal module obtains the current value of the headphone battery BAT to be tested through the fourth terminal of the current measuring device A and transmits the data to the host computer terminal. Furthermore, when the host computer terminal module needs to obtain the voltage value of the headphone battery BAT to be tested, the current measurement signal control terminal PWM1 of the host computer terminal module outputs a low-level signal to the control terminal of the first electronic switch tube Q1, and at the same time, the voltage measurement signal control terminal PWM2 of the host computer terminal module outputs a high-level signal to the control terminal of the second electronic switch tube Q2, so that the voltage at the control terminal of the first electronic switch tube Q1 is less than its threshold voltage, and the voltage at the control terminal of the second electronic switch tube Q2 is greater than its threshold voltage, thereby turning off the first electronic switch tube Q1 and turning on the second electronic switch tube Q2. Q2 is turned on; since the resistance of the current measuring component A in the circuit is very small and can be ignored, the first end of the voltage measuring component V is connected to the positive electrode of the headphone battery BAT to be tested through the current measuring component A, and the second end of the voltage measuring component V is connected to the negative electrode of the headphone battery BAT to be tested through the second electronic switch tube Q2, so that the voltage measuring component V can measure the voltage value across the headphone battery BAT to be tested. Finally, the data acquisition terminal I / O of the host terminal module obtains the voltage value of the headphone battery BAT to be tested through the fourth end of the current measuring component A and transmits the data to the host terminal.Specifically, the host computer terminal module collects the current and voltage values of the headphone battery BAT to be tested through the measurement component U1, and the host computer terminal module can generate a curve of the current and voltage changes of the headphone battery BAT to be tested over time in real time on the software pre-installed on the host computer based on the collected data, and save the corresponding data in real time on the specified path, thereby avoiding the problem of data loss caused by the host computer crashing after a long test; in addition, the host computer terminal module can also set the automatic stop threshold and trigger conditions during the measurement process, and when the preset conditions are reached during the measurement process, the software pre-installed on the host computer will automatically stop the test; in addition, the host computer terminal module is connected to multiple measurement components U1 at the same time to perform multi-channel parallel endurance testing.

[0039] Compared with the prior art, the present disclosure has at least the following advantages:

[0040] 1. The advantage of the multi-channel parallel battery life test circuit 10 for headphone batteries described above over traditional testing methods is that a single host computer terminal module can be connected to multiple measurement device circuits at the same time, and each measurement device circuit can be independently controlled, thereby improving the test efficiency of the multi-channel parallel battery life test circuit 10 for headphone batteries and reducing the number of host computer terminal modules, thereby reducing the procurement cost of the multi-channel parallel battery life test circuit 10 for headphone batteries. In addition, during the test process, the host computer terminal module can record and save data in real time, thereby preventing data loss to ensure the effectiveness of the measurement work. Furthermore, since the user can set the automatic stop threshold and conditions in the pre-installed software of the host computer terminal module according to needs, the test will be automatically stopped when the preset conditions are reached during the measurement process, thereby making the measurement process more intelligent, and thus making the multi-channel parallel battery life test circuit 10 for headphone batteries suitable for intelligent scenarios.

[0041] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A multi-channel parallel endurance test circuit for earphone batteries, characterized in that: It includes a host computer terminal module and a plurality of measuring device circuits, wherein the host computer terminal module is connected to the measuring device circuits. Each measuring device circuit includes a measuring component, a first resistor, a first electronic switch tube, and a second electronic switch tube. The measuring component includes a voltage measuring component and a current measuring component. The first end of the current measuring component is used to connect to the positive electrode of the headphone battery under test. The second end of the current measuring component is connected to the first end of the voltage measuring component. The third end of the current measuring component is connected to the first end of the first electronic switch tube. The second end of the first electronic switch tube is connected to the first end of the first resistor. The control end of the first electronic switch tube is connected to the current measurement signal control end of the host computer terminal module. The second end of the first resistor is used to connect to the negative electrode of the headphone battery under test. The second end of the voltage measuring component is connected to the first end of the second electronic switch tube, the second end of the second electronic switch tube is respectively connected to the negative electrode of the headphone battery to be tested and the ground end, the control end of the second electronic switch tube is connected to the voltage measurement signal control end of the host computer terminal module, and the data acquisition end of the host computer terminal module is respectively connected to the fourth end of each of the current measuring components.

2. The multi-channel parallel battery life test circuit for earphone batteries according to claim 1, characterized in that: The measuring device circuit further includes a second resistor, a first end of the second resistor is connected to the current measurement signal control end of the host computer terminal module, and a second end of the second resistor is connected to the control end of the first electronic switch tube.

3. The multi-channel parallel battery life test circuit for earphone batteries according to claim 2, characterized in that: The measuring device circuit further includes a third resistor, a first end of the third resistor is connected to the voltage measurement signal control end of the host computer terminal module, and a second end of the third resistor is connected to the control end of the second electronic switch tube.

4. The multi-channel parallel battery life test circuit for earphone batteries according to claim 1, characterized in that: The first electronic switch tube is an N-channel MOS tube.

5. The multi-channel parallel battery life test circuit for earphone batteries according to claim 1, characterized in that: The second electronic switch tube is an N-channel MOS tube.

6. The multi-channel parallel battery life test circuit for earphone batteries according to claim 2, characterized in that: The second resistor is an adjustable resistor.

7. The multi-channel parallel battery life test circuit for earphone batteries according to claim 3, characterized in that: The third resistor is an adjustable resistor.

8. A testing system, characterized in that: A multi-channel parallel battery life test circuit for an earphone battery comprising the circuit as described in any one of claims 1 to 7.

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