Battery insertion prompting device and electronic equipment

Abstract

The utility model relates to a battery insertion prompting device and electronic equipment. The prompting device comprises a control circuit, a field effect transistor and a prompter, the control circuit is connected with the grid electrode of the field effect transistor and is used for generating a corresponding potential signal according to the access change of an external battery; the drain electrode of the field effect transistor is connected with the prompter and is used for controlling the working state of the prompter according to the potential signal; and the source electrode of the field effect transistor is grounded, so that when an external battery is connected, the control circuit generates a corresponding potential signal, and the prompter is controlled to generate a corresponding prompting signal by utilizing the connection characteristic of the field effect transistor, thereby solving the problem of higher cost of the prompting device in the prior art, simplifying the structure of the prompting device and improving the prompting efficiency. The device cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic technical field especially, and it is a kind of battery insertion's prompting device and electronic equipment. BACKGROUND

[0002] Current part utilizes battery power supply's electronic equipment, there is higher endurance requirement, then usually for this kind of equipment is equipped with spare battery for replacement, so that when battery power is insufficient, replacement spare battery is powered in time, guarantee the normal work of equipment.Therefore, when battery state changes from not in place to in place, user needs to be prompted to inform user battery replacement success.

[0003] Current prompting device, small capacity battery is needed to power the prompting device for emitting sound or light signal, even still need to configure micro controller unit (Micro controller Unit, is called MCU) for controlling prompting device, increase the complexity of device structure, and when small capacity battery power is depleted, need to carry out disassembly replacement, all lead to the cost of prompting device is higher.

[0004] For the cost of prompting device is higher in the related art, there is no effective solution at present. UTILITY MODEL CONTENTS

[0005] Based on this, it is necessary to provide a battery insertion prompting device and electronic equipment for the cost of prompting device is higher.

[0006] The first aspect, the utility model provides a battery insertion prompting device, the device includes control circuit, field effect tube and prompter;

[0007] The control circuit is connected with the gate of the field effect tube, for generating corresponding potential signal according to the access change of external battery;

[0008] The drain of the field effect tube is connected with the prompter, for controlling the working state of the prompter according to the potential signal;

[0009] The source of the field effect tube is grounded.

[0010] In one embodiment, the control circuit is a buffer circuit, and the buffer circuit includes a resistor R1 and an inductor L1;

[0011] One end of the resistor R1 is connected with the external battery;The other end of the resistor R1 is connected with one end of the inductor L1 and the gate of the field effect tube respectively;

[0012] The other end of the inductor L1 is grounded.

[0013] In one embodiment, the control circuit is a damping circuit, which includes resistor R2, resistor R3, capacitor C1 and inductor L2;

[0014] One end of the resistor R2 is connected to the external battery; the other end of the resistor R2 is grounded.

[0015] One end of the resistor R3 is connected to the external battery; the other end of the resistor R3 is connected to one end of the capacitor C1.

[0016] The other end of the capacitor C1 is connected to one end of the inductor L2 and the gate of the field-effect transistor, respectively.

[0017] The other end of the inductor L2 is grounded.

[0018] In one embodiment, the resistor R3, the inductor L2, and the capacitor C1 satisfy the following relationship: .

[0019] In one embodiment, the prompter is one or more of a buzzer module, a light-emitting diode, and a communication module.

[0020] In one embodiment, the buzzer module includes a buzzer and a diode;

[0021] One end of the buzzer is connected to the field-effect transistor; the other end of the buzzer is grounded.

[0022] The diode is connected in reverse parallel with the buzzer.

[0023] In one embodiment, the diode is a Schottky diode.

[0024] In one embodiment, the prompting device further includes a protection module;

[0025] One end of the protection module is connected to the external battery; the other end of the protection module is connected to the indicator.

[0026] In one embodiment, the field-effect transistor is a junction field-effect transistor or an insulated-gate field-effect transistor.

[0027] Secondly, the present invention provides an electronic device, the electronic device including a battery insertion prompt device as described in any one of the first aspects.

[0028] The battery insertion prompting device and electronic device provided by this utility model, compared with the prior art, wherein the prompting device includes: a control circuit, a field-effect transistor (FET), and a prompter; the control circuit is connected to the gate of the FET and is used to generate a corresponding potential signal according to the change in the connection of an external battery; the drain of the FET is connected to the prompter and is used to control the working state of the prompter according to the potential signal; the source of the FET is grounded, so that when an external battery is connected, the control circuit generates a corresponding potential signal and uses the connection characteristics of the FET to control the prompter to generate a corresponding prompt signal, thereby solving the problem of high cost of prompting devices in the prior art, simplifying the structure of the prompting device, and effectively reducing the cost of the device. Attached Figure Description

[0029] Figure 1 This is a structural block diagram of a battery insertion indicator device according to an embodiment of the present invention;

[0030] Figure 2 This is a circuit diagram of a battery insertion indicator device according to an embodiment of the present invention;

[0031] Figure 3 This is a circuit diagram of a battery insertion indicator device according to an embodiment of the present invention;

[0032] Figure 4 This is a circuit diagram of a battery insertion indicator device according to an embodiment of the present invention;

[0033] Figure 5 This is a potential change curve of a battery insertion indicator device according to an embodiment of the present invention.

[0034] Reference numerals: 100, external battery; 200, control circuit; 300, field-effect transistor; 400, indicator. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] This utility model provides a battery insertion indicator device. Figure 1 This is a structural block diagram of a battery insertion indicator device according to an embodiment of the present invention, as shown below. Figure 1 As shown, the device includes a control circuit 200, a field-effect transistor 300, and a display 400;

[0039] The control circuit 200 is connected to the gate of the field-effect transistor 300 and is used to generate a corresponding potential signal according to the change in the connection of the external battery 100.

[0040] The drain of the field-effect transistor 300 is connected to the indicator 400 and is used to control the working state of the indicator 400 according to the potential signal;

[0041] The source of the MOSFET 300 is grounded.

[0042] Specifically, the prompting device comprises a control circuit 200, a field-effect transistor 300, and a prompter 400. When an external battery 100 is connected to the prompting device, the external battery 100 is connected to both the control circuit 200 and the field-effect transistor 300. The control circuit 200 generates a corresponding potential signal based on the connection of the external battery 100 and controls the operating state of the prompter 400 according to the potential signal. The control circuit 200 can be a buffer circuit, a damping circuit, or a processor for generating the corresponding potential signal.

[0043] It should be noted that when the external battery 100 is connected, the indicator 400 generates a corresponding indicator signal when the field-effect transistor 300 is turned on, and the indicator signal of the indicator 400 terminates when the field-effect transistor 300 is turned off.

[0044] In this embodiment, the prompting device comprises a control circuit 200, a field-effect transistor (FET) 300, and a prompter 400. The control circuit 200 is connected to the gate of the FET 300 and generates a corresponding potential signal based on the connection change of the external battery 100. The source of the FET 300 is connected to the external battery 100, and the drain of the FET 300 is connected to the prompter 400, controlling the operating state of the prompter 400 based on the potential signal. Thus, when the external battery 100 is connected, the control circuit 200 generates a corresponding potential signal and, utilizing the connection characteristics of the FET 300, controls the prompter 400 to generate a corresponding prompt signal. Compared with existing technologies, this prompting device does not require a small-capacity battery to power the device, nor does it require an MCU to control it. This solves the problem of high cost in existing prompting devices, simplifies the device structure, and effectively reduces costs.

[0045] In one embodiment, the control circuit 200 is a buffer circuit, which includes a resistor R1 and an inductor L1.

[0046] One end of resistor R1 is connected to external battery 100; the other end of resistor R1 is connected to one end of inductor L1 and the gate of field-effect transistor 300, respectively.

[0047] The other end of inductor L1 is grounded.

[0048] Specifically, if the external battery 100 is not in the present state, the gate potential of the field-effect transistor 300 is zero and the source potential is zero, and the indicator 400 is in the inactive state. When the external battery 100 changes from the absent state to the present state, the voltage value at the input terminal of the buffer circuit changes from zero to the battery voltage, the external battery 100 charges the inductor L1 in the buffer circuit, and the gate of the field-effect transistor 300 instantly reaches the battery voltage.

[0049] During the charging process of inductor L1, since the source of MOSFET 300 is grounded, its potential is zero, causing V to... GS =V DC_IN {EXP[-L1 / R1)]t}, in V GS Satisfy the conduction condition V GS >V GS(TH) In this case, the field-effect transistor 300 is turned on, controlling the indicator 400 to issue an indicator signal. Wherein, V GS V is the voltage between the gate and source of the field-effect transistor 300. GS(TH) To be with V GS The corresponding threshold voltage, and V DC_IN This refers to the external battery voltage.

[0050] It is important to know that, based on the continuity of the inductor charging current, the indicator 400 generates a continuous indicator signal, and during the charging process, the gate voltage of the field-effect transistor 300 decreases, causing the voltage V between the gate and source of the field-effect transistor 300 to decrease. GS It gradually decreases over time, when V GS Less than V GS(TH) When the signal is interrupted, the field-effect transistor 300 is cut off, and the indicator 400 stops displaying the signal.

[0051] Furthermore, when the external battery 100 changes from an inactive state to an active state, the continuity of the inductor charging current can be used to control the indicator 400 to issue a continuous prompt signal. The duration of the prompt signal is related to the parameter values ​​of resistor R1 and inductor L1, so the duration of the prompt signal can be adjusted by selecting different parameter values ​​of resistor R1 and inductor L1.

[0052] In one embodiment, the control circuit 200 is a damping circuit, which includes resistor R2, resistor R3, capacitor C1 and inductor L2.

[0053] One end of resistor R2 is connected to external battery 100; the other end of resistor R2 is grounded.

[0054] One end of resistor R3 is connected to external battery 100; the other end of resistor R3 is connected to one end of capacitor C1.

[0055] The other end of capacitor C1 is connected to one end of inductor L2 and the gate of field-effect transistor 300.

[0056] The other end of inductor L2 is grounded.

[0057] Specifically, if the external battery 100 is not in place, the gate potential of the field-effect transistor 300 is zero and the source is grounded, and the indicator 400 is in an inactive state. When the external battery 100 changes from an inactive state to an inactive state, resistor R2, resistor R3, inductor L2 and capacitor C1 form a second-order circuit, and at the instant the external battery 100 is connected, the gate potential of the field-effect transistor 300 reaches the battery voltage and the source potential is zero.

[0058] As the external battery 100 charges the inductor L2, the damping circuit operates in an overdamped state, ensuring that the potential between the gate and source meets the conduction condition. This controls the indicator 400 to generate a corresponding indicator signal. At this time, the voltage across capacitor C1 is... The voltage across inductor L2 is .

[0059] Where K1 and K2 are coefficients corresponding to the actual parameter values ​​of the damping circuit; V C '(t) represents V CThe derivative of (t); the expressions for S1 and S2 are respectively , V DC_IN This indicates the external battery voltage.

[0060] Furthermore, since the gate of the field-effect transistor 300 and one end of the inductor L2 are both connected to one end of the capacitor C1, the gate potential of the field-effect transistor 300 is the same as the voltage across the inductor L2, i.e., V G (t)=V L (t). During the charging process of inductor L2, V G (t) shows a monotonically decreasing trend, and V G The curve of (t) is relatively smooth, which can effectively reduce the jitter of the prompt signal and make the output of the prompt signal more stable. When V G (t) drops to a certain value, causing the voltage V between the gate and source to decrease. GS Less than the corresponding threshold voltage V GS(TH) If the field-effect transistor 300 is turned off, the indicator 400 will stop generating an indicator signal.

[0061] In this embodiment, after the external battery 100 is connected, the damping circuit is in an overdamped state. The gate potential decreases monotonically during the charging process of the inductor L2 until the voltage between the gate and the source does not meet the conduction condition of the field-effect transistor 300, at which point the prompt signal is terminated. This controls the prompter 400 to generate a continuous and stable prompt signal, effectively improving the quality of the prompt signal.

[0062] In one embodiment, the resistor R3, inductor L2, and capacitor C1 satisfy the following relationship: .

[0063] Specifically, select appropriate parameters for resistor R3, inductor L2, and capacitor C1 to satisfy the relationship. This ensures that the damping circuit can operate in an overdamped state according to the changes in the connection of the external battery 100, so that the gate potential of the field-effect transistor 300 decreases monotonically during the charging process of the inductor L2, thereby controlling the operating state of the field-effect transistor 300.

[0064] In one embodiment, the prompt 400 is one or more of a buzzer module, a light-emitting diode, and a communication module.

[0065] Specifically, according to the change in the connection of the external battery 100, the external battery 100 charges the capacitor in the control circuit 200. At this time, the field-effect transistor 300 is turned on, the control prompt 400 issues a prompt signal, and the prompt 400 stops issuing the prompt signal when the capacitor is fully charged.

[0066] More preferably, the indicator 400 can be a buzzer module that emits a sound when the external battery 100 is connected, or it can be a light-emitting diode that emits a light signal when the external battery 100 is connected. The indicator 400 can also be other communication modules used to generate prompt signals such as vibration.

[0067] It's important to know that the indicator 400 can be one or more of a buzzer module, an LED, and a communication module to meet different user needs. For example, a combination of a buzzer module and an LED can be used as the indicator 400. When the indicator 400 is activated, it emits both audible and visual signals to notify the user that the battery has been successfully replaced, thus allowing for flexible selection of different notification methods according to actual needs.

[0068] In one embodiment, the buzzer module includes a buzzer BZ1 and a diode D3;

[0069] One end of buzzer BZ1 is connected to field-effect transistor 300; the other end of buzzer BZ1 is grounded.

[0070] Diode D3 is connected in reverse parallel with buzzer BZ1.

[0071] Specifically, such as Figure 2 As shown, in this embodiment, the prompter 400 is a buzzer module, which consists of a buzzer BZ1 and a diode D3, with the diode D3 connected in reverse parallel with the buzzer BZ1. The buzzer BZ1 is typically an inductor. When the capacitor in the control circuit 200 is fully charged, the buzzer BZ1 stops its prompt sound, meaning it is de-energized. When an inductor is suddenly de-energized, a large induced electromotive force is generated, which can damage electronic components. Therefore, connecting the diode D3 in reverse parallel with the buzzer BZ1 effectively bypasses the induced electromotive force, reducing interference and protecting electronic components. Furthermore, the aforementioned diode D3 can be a Schottky diode.

[0072] In one embodiment, the notification device further includes a protection module;

[0073] One end of the protection module is connected to the external battery 100; the other end of the protection module is connected to the indicator 400.

[0074] Specifically, the notification device also includes a protection module, one end of which is connected to the external battery 100, and the other end is connected to the notification device 400. The protection module can be a single resistor, multiple resistors, or other electronic components that provide circuit protection. Depending on the actual application, electronic components with different parameter values ​​can be selected to form the protection module in this embodiment, effectively preventing circuit overload.

[0075] In one embodiment, the field-effect transistor 300 is a junction field-effect transistor or an insulated-gate field-effect transistor, such as an N-channel enhancement-mode field-effect transistor and an N-channel junction field-effect transistor, so as to utilize the connection characteristics of different field-effect transistors to control the field-effect transistor 300 to be turned on or off according to the potential change after the external battery 100 is connected, thereby further realizing the control of the working state of the indicator 400.

[0076] Figure 3 This is a circuit diagram of a battery connection indicator device according to a preferred embodiment of the present invention, as shown below. Figure 3 As shown, the prompting device includes: a resistor R1, an inductor L1, an N-channel enhancement-mode field-effect transistor Q1, a light-emitting diode D1, and a first protective resistor R4; wherein, one end of the resistor R1 is connected to the external battery 100, and the other end is connected to one end of the inductor L1 and the gate of the N-channel enhancement-mode field-effect transistor Q1, and the other end is grounded; one end of the first protective resistor R4 is connected to the external battery 100, and the other end is connected to the positive terminal of the light-emitting diode D1; the drain of the N-channel enhancement-mode field-effect transistor Q1 is connected to the negative terminal of the light-emitting diode D1, and the source is grounded.

[0077] Specifically, when the external battery 100 is not in place, the gate potential of the N-channel enhancement-mode MOSFET Q1 is zero, and the source potential is zero. At this time, the LED D1 is in an off state. When the external battery 100 changes from an off state to an in state, the voltage values ​​of the input terminal DC_IN(1) and the input terminal DC_IN(2) connected to the first protection resistor R4 change from zero to the battery voltage, and the external battery 100 charges the inductor L1. During the charging process of the inductor L1, since the source of the N-channel enhancement-mode MOSFET Q1 is grounded, its potential is zero, causing V GS =V DC_IN {EXP[-L1 / R1)]t}, in V GS Satisfy the conduction condition V GS >V GS(TH) In this case, the N-channel enhancement-mode MOSFET Q1 is turned on, controlling the light-emitting diode D1 to generate a light signal.

[0078] Among them, V DC_IN V is the external battery voltage. GS The voltage between the gate and source of the N-channel enhancement-mode field-effect transistor Q1, and V GS(TH) To be with V GS The corresponding threshold voltage.

[0079] It is important to know that, based on the continuity of the inductor charging current, the light-emitting diode D1 generates a continuous light signal, and the voltage V between the gate and source of the N-channel enhancement-mode MOSFET Q1 is... GS It gradually decreases over time, when V GS Less than VGS(TH) When the N-channel enhancement-mode MOSFET Q1 is turned off, the LED D1 is turned off.

[0080] More preferably, the first protection resistor R4 is connected to the positive terminal of the light-emitting diode D1. Depending on the actual application, resistors with different parameter values ​​can be selected as the first protection resistor R4 to protect the circuit.

[0081] The prompting device in this embodiment uses the continuity of the inductor charging current to control the light-emitting diode D1 to generate a continuous light signal when the external battery 100 changes from an absent state to an present state, so as to remind the user that the battery has been successfully replaced. Furthermore, by selecting different parameter values ​​for resistor R1 and inductor L1, the duration of the light emission can be adjusted, thereby solving the problem in the prior art that the duration of the prompting signal emitted by the prompting device cannot be adjusted. This enables flexible adjustment of the duration of the prompting signal emitted by the prompting device to meet the needs of different application scenarios.

[0082] Figure 4 This is a circuit diagram of a battery connection indicator device according to a preferred embodiment of the present invention, as shown below. Figure 4 As shown, the notification device includes: resistor R2, resistor R3, inductor L2, capacitor C1, N-channel enhancement-mode field-effect transistor Q2, light-emitting diode D2, and second protection resistor R5; wherein, one end of resistor R2 is connected to external battery 100, and the other end is grounded; one end of resistor R3 is connected to external battery 100, and the other end is connected to one end of capacitor C1; the other end of capacitor C1 is connected to one end of inductor L2 and the gate of N-channel enhancement-mode field-effect transistor Q2; the other end of inductor L2 is grounded; one end of the second protection resistor R5 is connected to external battery 100, and the other end is connected to the positive terminal of light-emitting diode D2; the drain of N-channel enhancement-mode field-effect transistor Q2 is connected to the negative terminal of light-emitting diode D2, and the source is grounded.

[0083] Specifically, when the external battery 100 is in an off-state, the gate potential of the N-channel enhancement-mode MOSFET Q2 is zero and the source is grounded, and the LED D2 is in an off-state. When the external battery 100 changes from an off-state to an on-state, resistor R2, resistor R3, inductor L2 and capacitor C1 form a second-order circuit, and at the instant the external battery 100 is connected, the gate potential of the N-channel enhancement-mode MOSFET Q2 reaches the battery voltage and the source potential is zero.

[0084] Furthermore, after the external battery 100 is connected, the voltage values ​​of input terminal DC_IN(1) and input terminal DC_IN(2) connected to the second protection resistor R5 change from zero to the battery voltage, charging the inductor L2. The damping circuit composed of resistor R2, resistor R3, inductor L2 and capacitor C1 is in an overdamped state, so that the voltage between the gate and source meets the conduction condition, controlling the light-emitting diode D2 to generate a light signal. The voltage across capacitor 304 The expression for the voltage across inductor L2 is: Where K1 and K2 are coefficients corresponding to the actual parameter values ​​of the damping circuit; V C '(t) is V C The derivative of (t); the expressions for S1 and S2 are: ; V DC_IN This indicates the external battery voltage.

[0085] In order to ensure that the damping circuit operates in an overdamped state according to the changes in the connection of the external battery 100, appropriate parameters need to be selected for the resistor R2, inductor L2, and capacitor C1 to satisfy the relationship. .

[0086] Since the gate of the N-channel enhancement-mode MOSFET Q2 and one end of the inductor L2 are both connected to one end of the capacitor C1, the gate potential is the same as the voltage across the inductor L2, i.e., V G (t)=V L (t).

[0087] It is important to know that, such as Figure 5 As shown, after the external battery 100 is connected, the light-emitting diode D2 generates a light signal; while during the charging process of the inductor L2, V G (t) shows a monotonically decreasing trend, if V G (t) drops to a certain value, the voltage V between the gate and the source decreases. GS Less than the corresponding threshold voltage V GS(TH) Then the N-channel enhancement-mode MOSFET Q2 is cut off, controlling the light-emitting diode D2 to turn off.

[0088] More preferably, the second protection resistor R5 is connected to the positive terminal of the light-emitting diode D2. Depending on the actual application, resistors with different parameter values ​​can be selected as the second protection resistor R5 to protect the circuit.

[0089] In this embodiment, the notification device charges inductor L2 when the external battery 100 changes from an absent state to an present state, putting the damping circuit in an overdamped state. This causes the gate potential of the N-channel enhancement-mode MOSFET Q2 to exhibit a monotonically decreasing trend. Thus, with the source grounded, the voltage between the gate and source is changed based on the change in gate potential, controlling the LED D2 to generate a light signal to remind the user that the battery replacement was successful. This notification device does not require a small-capacity battery to power it, nor does it require an MCU to control it. This solves the problem of high cost in existing notification devices, simplifies the device structure, and effectively reduces costs.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery insertion indicator device, characterized in that, The device includes a control circuit, a field-effect transistor, and a display. The control circuit is connected to the gate of the field-effect transistor and is used to generate a corresponding potential signal according to the change in the connection of the external battery. The control circuit is a damping circuit, which includes resistor R2, resistor R3, capacitor C1 and inductor L2; One end of the resistor R2 is connected to the external battery; the other end of the resistor R2 is grounded. One end of the resistor R3 is connected to the external battery; the other end of the resistor R3 is connected to one end of the capacitor C1. The other end of the capacitor C1 is connected to one end of the inductor L2 and the gate of the field-effect transistor, respectively. The other end of the inductor L2 is grounded; The drain of the field-effect transistor is connected to the indicator, and is used to control the working state of the indicator according to the potential signal; The source of the field-effect transistor is grounded.

2. The battery insertion indicator device according to claim 1, characterized in that, The control circuit is a buffer circuit, which includes a resistor R1 and an inductor L1. One end of the resistor R1 is connected to the external battery; the other end of the resistor R1 is connected to one end of the inductor L1 and the gate of the field-effect transistor, respectively. The other end of the inductor L1 is grounded.

3. The battery insertion indicator device according to claim 1, characterized in that, The resistor R3, the inductor L2, and the capacitor C1 satisfy the following relationship: .

4. The battery insertion indicator device according to claim 1, characterized in that, The prompter is one or more of a buzzer module, a light-emitting diode, and a communication module.

5. The battery insertion indicator device according to claim 4, characterized in that, The buzzer module includes a buzzer and a diode; One end of the buzzer is connected to the field-effect transistor; the other end of the buzzer is grounded. The diode is connected in reverse parallel with the buzzer.

6. The battery insertion indicator device according to claim 5, characterized in that, The diode is a Schottky diode.

7. The battery insertion indicator device according to claim 1, characterized in that, The notification device also includes a protection module; One end of the protection module is connected to the external battery; the other end of the protection module is connected to the indicator.

8. The battery insertion indicator device according to claim 1, characterized in that, The field-effect transistor is a junction field-effect transistor or an insulated-gate field-effect transistor.

9. An electronic device, characterized in that, The electronic device includes a battery insertion prompt device as claimed in any one of claims 1 to 8.

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