CN220022367U - Battery insertion prompting device and electronic equipment - Google Patents

Battery insertion prompting device and electronic equipment Download PDF

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Publication number
CN220022367U
CN220022367U CN202321236030.3U CN202321236030U CN220022367U CN 220022367 U CN220022367 U CN 220022367U CN 202321236030 U CN202321236030 U CN 202321236030U CN 220022367 U CN220022367 U CN 220022367U
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China
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resistor
prompter
battery
buffer circuit
prompting
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CN202321236030.3U
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Chinese (zh)
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鲍书军
胡增新
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Zhejiang Shunwei Technology Co ltd
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Zhejiang Shunwei Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model relates to a prompting device for battery insertion and an electronic device, wherein the prompting device comprises: the buffer circuit, the driving circuit and the prompter; the buffer circuit is connected with the drive circuit and used for generating corresponding potential signals according to the access change of an external battery, the change condition of the potential signals is controlled by the parameter values of each element in the buffer circuit, and the drive circuit is connected with the prompter and used for controlling the prompter to generate the duration of the prompting signals according to the change condition of the potential signals.

Description

Battery insertion prompting device and electronic equipment
Technical Field
The present utility model relates to the field of electronic technologies, and in particular, to a battery insertion prompting device and an electronic device.
Background
At present, electronic equipment powered by batteries is partially utilized, and has higher endurance requirements, and the equipment is generally provided with a standby battery for replacement, so that the standby battery can be replaced in time for power supply when the electric quantity of the battery is insufficient, and the normal operation of the equipment is ensured. Thus, when the battery state is changed from not in place to in place, a prompt needs to be given to the user to inform the user that the battery replacement is successful.
The current prompting device supplies power to prompting equipment for emitting sound or light signals through a small-capacity battery, so that normal operation of the prompting equipment is realized. However, the above device cannot adjust the duration of the prompt signal sent by the prompt device.
Aiming at the problem that the duration time of the prompt signal sent by the prompt device cannot be adjusted in the related art, no effective solution is proposed at present.
Disclosure of Invention
Accordingly, it is necessary to provide a battery-inserted presentation device and an electronic apparatus for solving the problem that the duration of the presentation signal to be sent from the presentation apparatus cannot be adjusted.
In a first aspect, the present utility model provides a battery insertion prompting device, the device comprising a buffer circuit, a driving circuit and a prompter;
the buffer circuit is connected with the driving circuit and is used for generating a corresponding potential signal according to the access change of an external battery; the change condition of the potential signal is controlled by the parameter value of each element in the buffer circuit;
the driving circuit is connected with the prompter and used for controlling the prompter to generate the duration of the prompting signal according to the change condition of the potential signal.
In one embodiment, the buffer circuit is a resistor-capacitor buffer circuit, and the resistor-capacitor buffer circuit includes a resistor R1, a resistor R2, and a capacitor C1;
one end of the resistor R1 is connected with the external battery; the other end of the resistor R1 is grounded;
one end of the resistor R2 is connected with the external battery; the other end of the resistor R2 is respectively connected with one end of the capacitor C1 and the driving circuit;
the other end of the capacitor C1 is grounded.
In one embodiment, the driving circuit is a first field effect transistor;
the source electrode of the first field effect tube is connected with the external battery;
the grid electrode of the first field effect tube is connected with the other end of the resistor R2;
and the drain electrode of the first field effect tube is connected with the prompter.
In one embodiment, the snubber circuit is a resistor-inductor snubber circuit, which includes a resistor R3 and an inductor L1;
one end of the resistor R3 is connected with the external battery; the other end of the resistor R3 is respectively connected with one end of the inductor L1 and the driving circuit;
the other end of the inductor L1 is grounded.
In one embodiment, the driving circuit is a second field effect transistor;
the source electrode of the second field effect transistor is grounded;
the grid electrode of the second field effect tube is connected with the other end of the resistor R3;
and the drain electrode of the second field effect tube is connected with the prompter.
In one embodiment, the prompter is one or more of a buzzer module, a light emitting diode and a communication module.
In one embodiment, the buzzer module comprises a buzzer and a diode;
the diode is reversely connected in parallel with the buzzer.
In one embodiment, the diode is a schottky diode.
In one embodiment, the prompting device further comprises a protection module;
the protection module is connected with the prompter.
In a second aspect, the present utility model provides an electronic device comprising a battery-insertion prompting apparatus according to any one of the first aspects.
Compared with the prior art, the prompting device for battery insertion and the electronic equipment provided by the utility model have the advantages that the prompting device comprises: the buffer circuit, the driving circuit and the prompter; the buffer circuit is connected with the drive circuit and used for generating corresponding potential signals according to the access change of an external battery, the change condition of the potential signals is controlled by parameter values of various elements in the buffer circuit, the drive circuit is connected with the prompter and used for controlling the prompter to generate the duration of the prompting signals according to the change condition of the potential signals, the problem that the duration of the prompting signals sent by the prompting equipment cannot be adjusted in the prior art is solved, the duration of the prompting signals sent by the prompting equipment can be flexibly adjusted, and the requirements of different application scenes are met.
Drawings
FIG. 1 is a block diagram showing a battery insertion prompting device according to an embodiment of the present utility model;
FIG. 2 is a circuit diagram of a battery insertion prompting device according to an embodiment of the utility model;
fig. 3 is a circuit diagram of a battery insertion prompting device according to an embodiment of the utility model.
Reference numerals: 100. an external battery; 200. a buffer circuit; 300. a driving circuit; 400. a prompter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It is noted that when an element is referred to as being "mounted to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, 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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.
Fig. 1 is a block diagram of a battery insertion prompting device according to an embodiment of the present utility model, as shown in fig. 1, the device includes a buffer circuit 200, a driving circuit 300 and a prompter 400;
the buffer circuit 200 is connected with the driving circuit 300, and is used for generating a corresponding potential signal according to the access change of the external battery 100, and the change condition of the potential signal is controlled by the parameter value of each element in the buffer circuit 200;
the driving circuit 300 is connected to the prompter 400, and is used for controlling the prompter 400 to generate the duration of the prompting signal according to the change condition of the potential signal.
Specifically, the presentation device is composed of the buffer circuit 200, the driving circuit 300, and the presenter 400, and when the external battery 100 is connected to the presentation device, the external battery 100 is connected to the buffer circuit 200 and the driving circuit 300, respectively. By the buffer function of the circuit, a corresponding potential signal is generated, and the change of the potential signal is controlled by the parameter values of each element in the buffer circuit 200.
Further, according to the change of the potential signal, the driving circuit 300 controls the prompter 400 to generate the duration of the prompting signal. In addition, when the driving circuit 300 is turned on, the prompter 400 generates a corresponding prompting signal, and when the driving circuit 300 is turned off, the prompting signal of the prompter 400 is terminated.
It should be noted that when the external battery 100 is connected to the prompting device, that is, is changed from the non-on-site state to the on-site state, the prompting device sends out continuous prompting signals, and the duration of the prompting signals can be adjusted by selecting the buffer circuit 200 elements with different parameter values.
Through the present embodiment, the prompting device is composed of a buffer circuit 200, a driving circuit 300 and a prompting device 400, wherein the buffer circuit 200 is connected with the driving circuit 300 for generating a corresponding potential signal according to the access change of the external battery 100, the change condition of the potential signal is controlled by the parameter value of each element in the buffer circuit 200, and the driving circuit 300 is connected with the prompting device 400 for controlling the duration of the prompting signal generated by the prompting device 400 according to the change condition of the potential signal. Compared with the prior art, the method has the advantages that a small-capacity battery is not required to be equipped for the prompting device for emitting the sound or light signals so as to ensure the normal operation of the prompting device, and the prompting device 400 can be controlled to generate the prompting signal by selecting the buffer circuit 200 elements with different parameter values, so that the problem that the duration time of the prompting device for emitting the prompting signal cannot be adjusted is solved, the duration time of the prompting device for emitting the prompting signal is flexibly adjusted, and the requirements of different application scenes are met.
In one embodiment, the buffer circuit 200 is a resistor-capacitor buffer circuit, which includes a resistor R1, a resistor R2, and a capacitor C1;
one end of the resistor R1 is connected to the external battery 100; the other end of the resistor R1 is grounded;
one end of the resistor R2 is connected to the external battery 100;
the other end of the resistor R2 is respectively connected with one end of the capacitor C1 and the driving circuit 300; the other end of the capacitor C1 is grounded.
Specifically, the buffer circuit 200 in this embodiment is a resistor-capacitor buffer circuit, and the resistor-capacitor buffer circuit includes a resistor R1, a resistor R2, and a capacitor C1. When the external battery 100 is connected to the prompting device, the voltage value of the input end of the resistor-capacitor buffer circuit is changed from zero to battery voltage, and the external battery 100 charges the capacitor C1 through the resistor R2. Since one end of the resistor R2 is connected to the external battery 100 and the other end of the resistor R2 is connected to one end of the capacitor C1 and the driving circuit 300, respectively, the buffer circuit 200 can generate a corresponding potential signal according to the access change of the external battery 100 to control the operation state of the driving circuit 300.
Wherein, during the charging process of the capacitor C1, the working state of the driving circuit 300 is conductive, and the control prompter 400 sends a prompting signal to indicate that the battery is replaced successfully; after the capacitor C1 is charged, the driving circuit 300 is turned off, and the prompter 400 terminates the prompting signal.
It should be noted that when external battery 100 is replaced from the on-state to the off-state, resistor R1, resistor R2, and capacitor C1 form a loop. At this time, the capacitor C1 can be discharged through the resistor R1, so that the problem that the external battery 100 cannot charge the capacitor C1 and cannot generate a corresponding potential signal when the external battery 100 is connected to the external battery 100 next time is prevented, and the prompter 400 cannot be started.
Further preferably, when the external battery 100 is replaced from the non-in-place state to the in-place state, the prompter 400 is controlled to send out continuous prompting signals by utilizing the continuity of the capacitor charging voltage, and the duration of the prompting signals is related to the parameter values of the resistor R2 and the capacitor C1 in the buffer circuit 200, so that the duration of the prompting signals can be adjusted by selecting the resistor R2 and the capacitor C1 with different parameter values so as to meet the requirements of different application scenes.
In one embodiment, the driving circuit 300 is a first field effect transistor;
a source electrode of the first field effect transistor connected to the external battery 100;
the grid electrode of the first field effect tube is connected with the other end of the resistor R2;
the drain of the first FET is connected to the prompter 400.
Specifically, the first fet in this embodiment may be a junction fet or an insulated gate fet. Taking the first fet as an example, if the external battery 100 is in an out-of-place state, the gate potential of the first fet is zero, and the source is suspended, at this time, the prompter 400 is in an inactive state.
Further, when the external battery 100 is changed from the non-on-site state to the on-site state, the voltage value at the input end of the buffer circuit 200 is changed from zero to the battery voltage, and the external battery 100 charges the capacitor C1 in the buffer circuit 200, the expression of the gate potential of the first fet is V G ＝V DC_IN {1-EXP[-t/(R2*C1)]}. Since the external battery 100 is connected with the source of the first FET, the source potential will reach the battery voltage instantaneously, V SG ＝V DC_IN -V DC_IN {1-EXP[-t/(R2*C1)]}＝V DC_IN {EXP[-t/(R2*C1)]In V } SG Meets the conduction condition V SG ＞V SG(TH) In the case of (1), the first fet is turned on, and the control prompter 400 sends a prompting signal.
Wherein V is DC_IN Represents the external battery voltage, V SG Is the voltage between the source S and the gate G, and V SG ＝V DC_IN -V DC_IN {1-EXP[-t/(R2*C1)]}＝V DC_IN {EXP[-t/(R2*C1)]} and V SG(TH) Is V (V) SG A corresponding threshold voltage.
It should be noted that, based on the continuity of the capacitor charging voltage, the indicator 400 generates a continuous indicator signal, and the voltage V between the source and the gate SG Gradually decrease with time, when V SG Less than V SG(TH) When the first fet is turned off, the prompter 400 terminates the prompting signal.
By using the first fet as the driving circuit 300 in this embodiment, after the external battery 100 is connected, whether the fet is turned on is controlled according to the potential signal by using the connection characteristic of the fet, thereby realizing the operation state of the corresponding control prompter 400.
In one embodiment, snubber circuit 200 is a resistor-inductor snubber circuit including resistor R3 and inductor L1;
one end of the resistor R3 is connected to the external battery 100; the other end of the resistor R3 is respectively connected with one end of the inductor L1 and the driving circuit 300;
the other end of the inductor L1 is grounded.
Specifically, the snubber circuit 200 in this embodiment is a resistor-inductor snubber circuit, which includes a resistor R3 and an inductor L1. When the external battery 100 is connected to the prompting device, the voltage value of the input end of the resistance-inductance buffer circuit is changed from zero to battery voltage, and the external battery 100 charges the inductance L1 through the resistance R3. Since one end of the resistor R3 is connected to the external battery 100 and the other end of the resistor R3 is connected to one end of the inductor L1 and the driving circuit 300, respectively, the buffer circuit 200 can generate a corresponding potential signal according to the access change of the external battery 100 to control the operation state of the driving circuit 300.
Further, during the charging process of the inductor L1, the driving circuit 300 is turned on, so that the control prompter 400 sends out a prompting signal to indicate that the battery is replaced successfully; after the inductor L1 is charged, the driving circuit 300 is turned off, and the control prompter 400 terminates the prompting signal.
When the external battery 100 is replaced from the non-in-place state to the in-place state, the prompter 400 can be controlled to send out continuous prompting signals by utilizing the continuity of the charging current of the inductor, and the duration of the prompting signals is related to the parameter values of the resistor R3 and the inductor L1, so that the duration of the prompting signals can be adjusted by selecting the resistor R3 and the inductor L1 with different parameter values, thereby meeting the requirements of different application scenes.
In one embodiment, the driving circuit 300 is a second field effect transistor;
the source electrode of the second field effect transistor is grounded;
the grid electrode of the second field effect tube is connected with the other end of the resistor R3;
the drain of the second FET is connected to the prompter 400.
Specifically, the second fet in this embodiment may be a junction fet or an insulated gate fet. Taking the second fet as an example, if the external battery 100 is in an out-of-place state, the gate potential of the second fet is zero and the source potential is zero, so that the prompter 400 is in an inactive state.
Further, the external battery 100 is changed from the off-site state to the on-site state, the voltage value of the input end of the buffer circuit 200 is changed from zero to the battery voltage, the gate of the second fet reaches the battery voltage instantaneously, and the external battery 100 charges the inductor L1 in the buffer circuit 200. During the charging of the inductance L1, the gate voltage of the second fet decreases. Because the source electrode of the second field effect transistor is grounded and the potential thereof is zero, V GS ＝V DC_IN {EXP[-L1/R3)]t }, at V GS Meets the conduction condition V GS ＞V GS(TH) In the case of (2), the second fet is turned on, and the control prompter 400 sends a prompting signal.
Wherein V is GS V is the voltage between the grid G and the source S of the second field effect transistor GS(TH) Is equal to V GS Corresponding threshold voltage and V DC_IN Is the external battery voltage.
It should be appreciated that, based on the continuity of the inductor charging current, the prompter 400 generates a continuous prompting signal, and the voltage V between the gate and the source of the second fet GS Gradually decreasing with time, and when VGS is smaller than VGS (TH), the second fet is turned off and the reminder 400 terminates the reminder signal.
By using the second fet as the driving circuit 300 in this embodiment, after the external battery 100 is connected, the connection characteristics of the fet are utilized to control whether the fet is turned on according to the potential signal, so as to realize the operation state of the corresponding control prompter 400.
In one embodiment, the prompter 400 is one or more of a buzzer module, a light emitting diode, and a communication module.
Specifically, according to the access change of the external battery 100, the external battery 100 charges the capacitor or the inductor in the buffer circuit 200, at this time, the driving circuit 300 is turned on, the prompter 400 is controlled to send out a prompting signal, and when the capacitor or the inductor is fully charged, the prompter 400 terminates the prompting signal.
Further preferably, the prompter 400 may be a buzzer module, which emits a prompting sound when the external battery 100 is connected, or may be configured as a light emitting diode, which emits a light signal when the external battery 100 is connected, and the prompter 400 may also be another communication module for generating a prompting signal such as vibration.
It should be appreciated that the prompter 400 may be one or more of a buzzer module, a light emitting diode, and a communication module to meet different user requirements. For example, the buzzer module and the light emitting diode are combined to serve as the prompter 400, and the prompter 400 is started to emit an acousto-optic signal at the same time so as to prompt the user that the battery is replaced successfully. Therefore, different prompting modes can be flexibly selected according to actual requirements.
In one embodiment, the buzzer module comprises a buzzer and a diode;
the diode is connected in reverse parallel with the buzzer.
Specifically, in this embodiment, the prompter 400 is a buzzer module, which is composed of a buzzer and a diode, and the diode is connected in anti-parallel with the buzzer. The buzzer module may be disposed between the driving circuit 300 and the protection module, i.e. one end of the buzzer is connected with the driving circuit 300, and the other end of the buzzer is connected with the protection module, or one end of the buzzer is connected with the protection module, and the other end of the buzzer is grounded.
It should be noted that, the buzzer is usually an inductive element, when the capacitor or the inductor in the buffer circuit 200 is fully charged, the buzzer stops the alarm, that is, the buzzer is powered off at this time, and when the inductive element is suddenly powered off, a larger induced electromotive force is generated to damage the electronic element, so that the diode and the buzzer are connected in anti-parallel, which can effectively bypass the induced electromotive force, reduce the interference and protect the electronic element. In addition, the diode may be a schottky diode.
In one embodiment, the prompting device further comprises a protection module;
the protection module is connected with the prompter 400.
Specifically, the prompting device further includes a protection module, and the protection module is connected to the prompter 400, and may be disposed between the driving circuit 300 and the prompter 400, or disposed in such a manner that one end of the protection module is connected to the external battery 100, and the other end is connected to the prompter 400.
Further preferably, the protection module may be a single resistor, a plurality of resistors or other electronic components playing a role in protecting a circuit, and according to practical application, electronic components with different parameter values may be selected to form the protection module in this embodiment, so as to effectively prevent overload of the circuit.
The present embodiment is described and illustrated below by way of preferred embodiments.
Fig. 2 is a circuit diagram of a battery-accessed reminder device according to a preferred embodiment of the present utility model, as shown in fig. 2, the reminder device comprising: the resistor R1, the resistor R2, the capacitor C1, the P-channel enhanced field effect transistor Q1, the buzzer BZ1, the Schottky diode D1 and the first protection resistor R4; wherein, one end of the resistor R1 is connected with the external battery 100, and the other end is grounded; one end of the resistor R2 is connected with the external battery 100, and the other end of the resistor R2 is respectively connected with one end of the capacitor C1 and the grid electrode of the P-channel enhancement type field effect transistor Q1; the other end of the capacitor C1 is grounded; one end of the first protection resistor R4 is connected with the drain electrode of the P-channel enhanced field effect transistor Q1, and the other end of the first protection resistor R is connected with one end of the buzzer BZ 1; the other end of the buzzer BZ1 is grounded, and the Schottky diode D1 is reversely connected with the buzzer BZ1 in parallel.
Specifically, when the external battery 100 is not in place, the gate potential of the P-channel enhanced field effect transistor Q1 is zero, and the source is suspended, so that the buzzer BZ1 does not sound; when the external battery 100 is changed from the off-site state to the on-site state, the voltage values of the input terminal dc_in (1) and the input terminal dc_in (2) connected to the source of the P-channel enhancement type field effect transistor Q1 change from zero to the battery voltage V DC_IN And the external battery 100 charges the capacitor C1, the expression of the gate potential is V G ＝V DC_IN {1-EXP[-t/(R2*C1)]}. Since the external battery 100 is connected with the source of the P-channel enhancement type FET Q1, the source potential will reach the battery voltage instantaneously, V SG ＝V DC_IN -V DC_IN {1-EXP[-t/(R2*C1)]}＝V DC_IN {EXP[-t/(R2*C1)]In V } SG Meet the requirements of guideGeneral condition V SG ＞V SG(TH) Under the condition of (1), the P-channel enhanced field effect transistor Q1 is conducted to control the buzzer BZ1 to give out prompt sounds.
Wherein V is DC_IN Represents the external battery voltage, V SG Is the voltage between the source S and the gate G, and V SG ＝V DC_IN -V DC_IN {1-EXP[-t/(R2*C1)]}＝V DC_IN {EXP[-t/(R2*C1)]}，V SG(TH) Is V (V) SG A corresponding threshold voltage.
It should be noted that, based on the continuity of the capacitor charging voltage, the buzzer BZ1 generates a continuous alert tone and the voltage V between the source and the gate SG Gradually decrease with time, when V SG Less than V SG(TH) When the P-channel enhanced field effect transistor Q1 is cut off, the buzzer BZ1 stops sounding.
Further preferably, the first protection resistor R4 is disposed between the P-channel enhancement type field effect transistor Q1 and the buzzer BZ1, and the resistors with different parameter values can be selected as the first protection resistor R4 according to practical application conditions, so as to play a role of protecting a circuit.
Through the prompting device in this embodiment, when the external battery 100 is changed from the non-in-place state to the in-place state, the buzzer BZ1 is controlled to send out continuous prompting tones by utilizing the continuity of the capacitor charging voltage so as to remind the user that the battery is successfully replaced, and the duration of the prompting tones can be adjusted by selecting the resistor R2 and the capacitor C1 with different parameter values, so that the problem that the duration of the prompting signals sent out by the prompting device cannot be adjusted in the prior art is solved, the duration of the prompting signals sent out by the prompting device can be flexibly adjusted, and the requirements of different application scenes can be met.
Fig. 3 is a circuit diagram of a battery-accessed reminder device according to a preferred embodiment of the present utility model, as shown in fig. 3, comprising: the LED comprises a resistor R3, an inductor L1, an N-channel enhancement type field effect transistor Q2, a light emitting diode D2 and a second protection resistor R5; one end of the resistor R3 is connected with the external battery 100, the other end of the resistor R3 is respectively connected with one end of the inductor L1 and the grid electrode of the N-channel enhancement type field effect transistor Q2, and the other end of the resistor R is grounded; one end of the second protection resistor R5 is connected with the external battery 100, and the other end of the second protection resistor R5 is connected with the anode of the light-emitting diode D2; the drain electrode of the N-channel enhanced field effect transistor Q2 is connected with the cathode of the light emitting diode D2, and the source electrode is grounded.
Specifically, when the external battery 100 is not in place, the gate potential of the N-channel enhancement type field effect transistor Q2 is zero, and the source potential is zero, and at this time, the light emitting diode D2 is in an off state; when the external battery 100 is changed from the off-site state to the on-site state, the voltage values of the input terminal dc_in (1) and the input terminal dc_in (2) connected to the second protection resistor R5 are changed from zero to the battery voltage, and the external battery 100 charges the inductor L1. During the charging process of the inductor L1, the source electrode of the N-channel enhanced field effect transistor Q2 is grounded, and the potential thereof is zero, so that V GS ＝V DC_IN {EXP[-L1/R3)]t }, at V GS Meets the conduction condition V GS ＞V GS(TH) In the case of (2), the N-channel enhancement type field effect transistor Q2 is turned on to control the light emitting diode D2 to generate an optical signal.
Wherein V is DC_IN For external battery voltage, V GS Voltage between gate G and source S of N-channel enhancement type FET Q2, and V GS(TH) Is equal to V GS A corresponding threshold voltage.
It should be noted that the led D2 generates a continuous light signal based on the continuity of the inductor charging current, and the voltage V between the gate and the source of the N-channel enhancement type fet Q2 GS Gradually decrease with time, when V GS Less than V GS(TH) When the N-channel enhancement type field effect transistor Q2 is turned off, the light emitting diode D2 is turned off.
Further preferably, the second protection resistor R5 is connected to the positive electrode of the light emitting diode D2, and according to practical application, resistors with different parameter values can be selected as the second protection resistor R5 to function as a protection circuit.
Through the prompting device in this embodiment, when the external battery 100 is replaced from the non-in-place state to the in-place state, the continuous light signal generated by the light emitting diode D2 is controlled by utilizing the continuity of the inductance charging current to remind the user that the battery is replaced successfully, and the length of the light emitting time can be adjusted by selecting the resistor R3 and the inductance L1 with different parameter values, so that the problem that the duration of the prompting signal sent by the prompting device cannot be adjusted in the prior art is solved, the duration of the prompting signal sent by the prompting device is flexibly adjusted, and the requirements of different application scenes are met.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A prompting device for battery insertion, which is characterized by comprising a buffer circuit, a driving circuit and a prompting device;
the buffer circuit is connected with the driving circuit and is used for generating a corresponding potential signal according to the access change of an external battery; the change condition of the potential signal is controlled by the parameter value of each element in the buffer circuit;
the buffer circuit is a resistor-capacitor buffer circuit, and the resistor-capacitor buffer circuit comprises a resistor R1, a resistor R2 and a capacitor C1; one end of the resistor R1 is connected with the external battery; the other end of the resistor R1 is grounded; one end of the resistor R2 is connected with the external battery; the other end of the resistor R2 is respectively connected with one end of the capacitor C1 and the driving circuit; the other end of the capacitor C1 is grounded;
the driving circuit is connected with the prompter and used for controlling the prompter to generate the duration of the prompting signal according to the change condition of the potential signal;
wherein the driving circuit is a first field effect transistor; the source electrode of the first field effect tube is connected with the external battery; the grid electrode of the first field effect tube is connected with the other end of the resistor R2; and the drain electrode of the first field effect tube is connected with the prompter.
2. The battery insertion prompting device according to claim 1, wherein the prompter is one or more of a buzzer module, a light emitting diode, and a communication module.
3. The battery insertion prompting device according to claim 2, wherein the buzzer module includes a buzzer and a diode;
the diode is reversely connected in parallel with the buzzer.
4. A battery insertion prompting device according to claim 3 wherein said diode is a schottky diode.
5. A prompting device for battery insertion, which is characterized by comprising a buffer circuit, a driving circuit and a prompting device;
the buffer circuit is connected with the driving circuit and is used for generating a corresponding potential signal according to the access change of an external battery; the change condition of the potential signal is controlled by the parameter value of each element in the buffer circuit;
the buffer circuit is a resistor-inductor buffer circuit, and the resistor-inductor buffer circuit comprises a resistor R3 and an inductor L1; one end of the resistor R3 is connected with the external battery; the other end of the resistor R3 is respectively connected with one end of the inductor L1 and the driving circuit; the other end of the inductor L1 is grounded;
the driving circuit is connected with the prompter and used for controlling the prompter to generate the duration of the prompting signal according to the change condition of the potential signal;
wherein the driving circuit is a second field effect transistor; the source electrode of the second field effect transistor is grounded; the grid electrode of the second field effect tube is connected with the other end of the resistor R3; and the drain electrode of the second field effect tube is connected with the prompter.
6. The battery insertion prompting device according to claim 5, wherein the prompter is one or more of a buzzer module, a light emitting diode, and a communication module.
7. The battery insertion prompting device according to claim 6, wherein the buzzer module includes a buzzer and a diode;
the diode is reversely connected in parallel with the buzzer.
8. The battery insertion notification device of claim 7, wherein the diode is a schottky diode.
9. The battery insertion notification device of claim 5, further comprising a protection module;
the protection module is connected with the prompter.
10. An electronic device comprising a battery-inserted prompting device according to any one of claims 1 to 4.
CN202321236030.3U 2023-05-17 2023-05-17 Battery insertion prompting device and electronic equipment Active CN220022367U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321236030.3U CN220022367U (en) 2023-05-17 2023-05-17 Battery insertion prompting device and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321236030.3U CN220022367U (en) 2023-05-17 2023-05-17 Battery insertion prompting device and electronic equipment

Publications (1)

Publication Number Publication Date
CN220022367U true CN220022367U (en) 2023-11-14

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Country Link
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