Charger automatic detection device and charger

Abstract

The utility model discloses a charger automatic detection device and a charger. The charger automatic detection device comprises a single-chip microcomputer module, a detection output interface and a plurality of test circuits. Each test circuit comprises an analog circuit and an indicating circuit; the analog circuit comprises a thermistor, a detection output pin, a control signal pin and an MOS (Metal Oxide Semiconductor) tube; the indicating circuit comprises a power supply pin, a light emitting diode, a triode and an indicating signal pin; the single-chip microcomputer module transmits a control signal to the control signal pin of each analog circuit and transmits an indication signal to the indication signal pin of each indication circuit. The detection output pin of each analog circuit is connected with the detection output interface, and the detection output interface is connected with the charger detection interface. Detection box debugging can be carried out on the charger, operation is convenient and fast, the detection efficiency of the charger can be effectively improved, and the quality of the charger can be further improved.

Description

Technical Field

[0001] The utility model relates to an automatic detection device for a charger and a charger. Background Art

[0002] A battery pack is a unit composed of multiple battery cells and is commonly used in various electronic devices and power tools. Its primary function is to provide a stable power output to power the device. These packs can be used in energy storage devices, electric vehicles, drones, and other equipment.

[0003] In the prior art, a charger test for a battery pack requires connection testing with the battery pack and debugging of various states of the battery pack during charging. This testing method has the disadvantages of low work efficiency and high cost. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the defect of low charger testing efficiency in the prior art and to provide a charger automatic detection device and charger that can debug the detection box of the charger, is easy and quick to operate, can effectively improve the detection efficiency of the charger, and can further improve the quality of the charger.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A charger automatic detection device, characterized in that the charger automatic detection device includes a single chip microcomputer module, a detection output interface and a plurality of test circuits;

[0007] Each test circuit includes a simulation circuit and an indication circuit;

[0008] The analog circuit includes a thermistor, a detection output pin, a control signal pin, and a MOS transistor, wherein the detection output pin is connected to the drain of the MOS transistor through the thermistor, the control signal pin is connected to the gate of the MOS transistor, and the source of the MOS transistor is grounded;

[0009] The indication circuit includes a power pin, a light-emitting diode, a transistor and an indication signal pin, wherein the power pin is connected to the collector of the transistor through the light-emitting diode, the indication signal pin is connected to the base of the transistor, and the emitter of the transistor is grounded;

[0010] The single chip microcomputer module transmits a control signal to the control signal pin of each analog circuit and transmits an indication signal to the indication signal pin of each indication circuit;

[0011] The detection output pin of each analog circuit is connected to the detection output interface, and the detection output interface is connected to the charger detection interface.

[0012] Preferably, each test circuit also includes a key circuit, which includes a power supply pin, a switch and a key signal pin. The power supply pin is grounded through the switch, the key signal pin is connected between the power supply pin and the switch, and the key signal pin transmits a key signal to the microcontroller module.

[0013] Preferably, the test circuit includes a test circuit simulating normal operation, a test circuit simulating high temperature protection, a test circuit simulating high temperature startup, a test circuit simulating low temperature protection and a test circuit simulating low temperature startup.

[0014] Preferably, the resistance of the thermistor in the test circuit simulating normal operation is 9 kilo-ohms to 12 kilo-ohms, the resistance of the thermistor in the test circuit simulating high-temperature protection is 2.5 kilo-ohms to 4 kilo-ohms, the resistance of the thermistor in the test circuit simulating high-temperature startup is 6 kilo-ohms to 7 kilo-ohms, the resistance of the thermistor in the test circuit simulating low-temperature protection is 31 kilo-ohms to 34 kilo-ohms, and the resistance of the thermistor in the test circuit simulating low-temperature startup is 13 kilo-ohms to 16 kilo-ohms.

[0015] Preferably, the charger automatic detection device also includes an alarm circuit, which includes an alarm power pin, a buzzer, a transistor and an alarm signal pin. The alarm power pin is connected to the collector of the transistor through the buzzer, the alarm signal pin is connected to the base of the transistor, the emitter of the transistor is grounded, and the single-chip microcomputer module transmits an alarm signal to the alarm signal pin.

[0016] Preferably, the single chip microcomputer module includes a detection pin, and the detection pin is connected to the charger current output interface.

[0017] Preferably, the charger automatic detection device further includes a reset circuit, the reset circuit includes a reset button and a reset signal pin, and the reset signal pin is connected to the reset pin of the single-chip microcomputer module.

[0018] The utility model also provides a charger, which is characterized in that the charger is used to connect to the above-mentioned automatic charger detection device.

[0019] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0020] The positive progress effect of this utility model is:

[0021] This application can debug the charger detection box, which is convenient and quick to operate and can effectively improve the detection efficiency of the charger, and further improve the quality of the charger.

[0022] This application uses the automatic switching of NTC resistance values ​​on the microcontroller control board to simulate normal temperature charging; high temperature protection and high temperature recovery; low temperature protection and low temperature recovery; and the required different NTC trigger resistance values ​​to detect the working conditions of the charger under the above conditions. Red and green LED indicator lights and a high-power buzzer are designed on the board, allowing testing personnel to quickly conduct research and development and production testing of the charger through sound and light.

[0023] The operator only needs to perform one plug-in and pull-out operation during the inspection process to complete all the above inspection items and give the judgment result of whether the charger is good. This simplifies the previous operation steps, saves operation time, and improves production inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the automatic charger detection device of Example 1 of the present utility model.

[0025] Figure 2 This is a structural diagram of a test circuit simulating normal operation according to Example 1 of the present utility model.

[0026] Figure 3 This is a structural diagram of a test circuit for simulating high temperature protection according to Example 1 of the present utility model.

[0027] Figure 4 This is a structural diagram of a test circuit for simulating high-temperature startup according to Example 1 of the present utility model.

[0028] Figure 5 This is a structural diagram of a test circuit for simulating low-temperature protection according to Example 1 of the present utility model.

[0029] Figure 6 This is a structural diagram of a test circuit for simulating low-temperature startup according to Example 1 of the present utility model.

[0030] Figure 7 This is a schematic structural diagram of the alarm circuit of Example 1 of the present utility model.

[0031] Figure 8 This is a structural diagram of the reset circuit of Example 1 of the present utility model. DETAILED DESCRIPTION

[0032] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. Example

[0033] In this embodiment, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] See also Figures 1 to 8 , this embodiment provides a charger automatic detection device and a charger.

[0035] The charger automatic detection device includes a single chip microcomputer module 10, a detection output interface and a plurality of test circuits.

[0036] Each test circuit includes an analog circuit 11 and an indicator circuit 12 .

[0037] The analog circuit 11 includes a thermistor 111, a detection output pin 112, a control signal pin 113 and a MOS transistor 114. The detection output pin is connected to the drain of the MOS transistor through the thermistor, the control signal pin is connected to the gate of the MOS transistor, and the source of the MOS transistor is grounded.

[0038] The indication circuit 12 includes a power pin 121, a light-emitting diode 122, a transistor 123 and an indication signal pin 124. The power pin is connected to the collector of the transistor through the light-emitting diode, the indication signal pin is connected to the base of the transistor, and the emitter of the transistor is grounded.

[0039] The single chip microcomputer module transmits a control signal to a control signal pin of each analog circuit and transmits an indication signal to an indication signal pin of each indication circuit.

[0040] The detection output pin of each analog circuit is connected to the detection output interface, and the detection output interface is connected to the charger detection interface.

[0041] Each test circuit further includes a key circuit 13 , which includes a power supply pin 131 , a switch 132 , and a key signal pin 133 .

[0042] The power supply pin 131 is grounded through the switch 132 , and the key signal pin 133 is connected between the power supply pin 131 and the switch. The key signal pin 133 transmits a key signal to the single chip microcomputer module.

[0043] The test circuit includes a test circuit simulating normal operation, a test circuit simulating high temperature protection, a test circuit simulating high temperature startup, a test circuit simulating low temperature protection, and a test circuit simulating low temperature startup.

[0044] The resistance of the thermistor in the test circuit simulating normal operation is 9 kilo-ohms to 12 kilo-ohms.

[0045] The resistance of the thermistor in the test circuit simulating high temperature protection is 2.5 kilo-ohms to 4 kilo-ohms.

[0046] The resistance of the thermistor in the test circuit simulating high-temperature startup is 6 kilo-ohms to 7 kilo-ohms.

[0047] The resistance of the thermistor in the test circuit simulating low temperature protection is 31 kilo-ohms to 34 kilo-ohms.

[0048] The resistance of the thermistor in the test circuit simulating low temperature startup is 13 kilo-ohms to 16 kilo-ohms.

[0049] The charger automatic detection device further includes an alarm circuit 14 , which includes an alarm power pin 141 , a buzzer 142 , a transistor 143 , and an alarm signal pin 144 .

[0050] The alarm power pin 141 is connected to the collector of the transistor through the buzzer, the alarm signal pin is connected to the base of the transistor, the emitter of the transistor is grounded, and the single chip microcomputer module transmits an alarm signal to the alarm signal pin.

[0051] The single chip microcomputer module includes a detection pin 101, which is connected to the charger current output interface.

[0052] The charger automatic detection device further includes a reset circuit 15 , which includes a reset button 151 and a reset signal pin 152 . The reset signal pin is connected to the reset pin of the single chip microcomputer module.

[0053] The microcontroller controls the opening and closing of different thermistor NTC resistor values ​​on the board to simulate normal temperature charging; high temperature protection and high temperature recovery; low temperature protection and low temperature recovery; and the different NTC trigger resistor values ​​required.

[0054] After the charger receives the NTC value through the XT60 interface, it immediately triggers the MCU control unit inside the charger to perform actions such as protection, stopping charging, and resuming charging. The charger's own indicator light will also flash red and green to alert the operator to the current status of the charger. At this time, the detection motherboard will also synchronously light up the LED lights of the same color on the detection box to confirm the status. This is accompanied by a buzzer alarm sound. Users can also press the corresponding independent buttons to perform normal temperature charging; charging high temperature protection, charging high temperature recovery; charging low temperature protection, and charging low temperature recovery. Separate retests to confirm the problem. If the automated test process is abnormal, you can also press the RESET button at any time to restart a new round of testing from the beginning.

[0055] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A charger automatic detection device, characterized in that: The charger automatic detection device includes a single chip microcomputer module, a detection output interface and a plurality of test circuits; Each test circuit includes a simulation circuit and an indication circuit; The analog circuit includes a thermistor, a detection output pin, a control signal pin, and a MOS transistor, wherein the detection output pin is connected to the drain of the MOS transistor through the thermistor, the control signal pin is connected to the gate of the MOS transistor, and the source of the MOS transistor is grounded; The indication circuit includes a power pin, a light-emitting diode, a transistor and an indication signal pin, wherein the power pin is connected to the collector of the transistor through the light-emitting diode, the indication signal pin is connected to the base of the transistor, and the emitter of the transistor is grounded; The single chip microcomputer module transmits a control signal to the control signal pin of each analog circuit and transmits an indication signal to the indication signal pin of each indication circuit; The detection output pin of each analog circuit is connected to the detection output interface, and the detection output interface is connected to the charger detection interface.

2. The automatic charger detection device according to claim 1, characterized in that: Each test circuit also includes a key circuit, which includes a power supply pin, a switch and a key signal pin. The power supply pin is grounded through the switch, the key signal pin is connected between the power supply pin and the switch, and the key signal pin transmits a key signal to the microcontroller module.

3. The automatic charger detection device according to claim 1, characterized in that: The test circuit includes a test circuit simulating normal operation, a test circuit simulating high temperature protection, a test circuit simulating high temperature startup, a test circuit simulating low temperature protection, and a test circuit simulating low temperature startup.

4. The automatic charger detection device according to claim 3, characterized in that: The resistance of the thermistor in the test circuit simulating normal operation is 9 kilo-ohms to 12 kilo-ohms, the resistance of the thermistor in the test circuit simulating high-temperature protection is 2.5 kilo-ohms to 4 kilo-ohms, the resistance of the thermistor in the test circuit simulating high-temperature startup is 6 kilo-ohms to 7 kilo-ohms, the resistance of the thermistor in the test circuit simulating low-temperature protection is 31 kilo-ohms to 34 kilo-ohms, and the resistance of the thermistor in the test circuit simulating low-temperature startup is 13 kilo-ohms to 16 kilo-ohms.

5. The automatic charger detection device according to claim 1, characterized in that: The charger automatic detection device also includes an alarm circuit, which includes an alarm power pin, a buzzer, a transistor and an alarm signal pin. The alarm power pin is connected to the collector of the transistor through the buzzer, the alarm signal pin is connected to the base of the transistor, the emitter of the transistor is grounded, and the single-chip computer module transmits an alarm signal to the alarm signal pin.

6. The automatic charger detection device according to claim 5, characterized in that: The single chip microcomputer module includes a detection pin, which is connected to the charger current output interface.

7. The automatic charger detection device according to claim 1, characterized in that: The charger automatic detection device further includes a reset circuit, which includes a reset button and a reset signal pin, and the reset signal pin is connected to the reset pin of the single-chip microcomputer module.

8. A charger, characterized in that: The charger is used to connect to the charger automatic detection device according to any one of claims 1 to 7.

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