CN208445752U - A kind of hearing aid circuit - Google Patents
A kind of hearing aid circuit Download PDFInfo
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- CN208445752U CN208445752U CN201820912450.1U CN201820912450U CN208445752U CN 208445752 U CN208445752 U CN 208445752U CN 201820912450 U CN201820912450 U CN 201820912450U CN 208445752 U CN208445752 U CN 208445752U
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Abstract
The utility model discloses a kind of hearing aid circuits, including power supply interface module, charge management module, battery protection module, charging cell module, switch module, hearing aid module, charging detecting model, main control module, first and second Voltage stabilizing modules and temperature detecting module, the output end a-road-through overcharge management module of power supply interface module connects charging cell module, the input terminal of the first Voltage stabilizing module is connect all the way, the output end of charging cell module connects the input terminal of the first Voltage stabilizing module by switch module, the output end of first Voltage stabilizing module connects the input terminal of the second Voltage stabilizing module all the way, it powers all the way for main control module, the power end of the output termination hearing aid module of second Voltage stabilizing module, charge management module, switch module, hearing aid module and the second Voltage stabilizing module are connect with main control module respectively, temperature detecting module is used In the temperature of detection charge management module and battery protection module, charging detecting model is for detecting whether power supply interface module has plant-grid connection.
Description
Technical field
The utility model belongs to field of hearing aids, more particularly to a kind of hearing aid circuit.
Background technique
Hearing aid is that one kind facilitates hearing disabilities person's improvement dysacousis, and then improves and his conference communicative competence
Equipment.
Existing hearing aid circuit is in charging, if having forgotten shutdown, hearing aid circuit will not break hearing aid mould automatically
The power supply of block, since the sensitivity of hearing aid module is higher, in charging, hearing aid module is easy to make because charge power supply is unstable
The damage of pairs of hearing aid module.In addition, the power supply interface module of existing hearing aid is being filled if there is entering the liquid such as sweat
When electric, the temperature of charge management module and battery protection module will be made excessively high, cause the entire casing of hearing aid to melt, not only make
Entire hearing aid scraps that there is also very big security risks.
Summary of the invention
It is above-mentioned to solve the problems, such as that the purpose of this utility model is to provide a kind of hearing aid circuits.
To achieve the above object, the technical solution adopted in the utility model are as follows: a kind of hearing aid circuit, including power interface
Module, charge management module, battery protection module, charging cell module, switch module, hearing aid module, charging detecting model,
Main control module, the first Voltage stabilizing module, the second Voltage stabilizing module and temperature detecting module, the output end one of the power supply interface module
Road connects the input terminal of charge management module, and another way connects the input terminal of the first Voltage stabilizing module, the output of the charge management module
The input terminal of charging cell module is terminated, the battery protection module is connect with charging cell module, the charging cell module
Output end the input terminal of the first Voltage stabilizing module is connect by switch module, the output end of first Voltage stabilizing module connects second all the way
The input terminal of Voltage stabilizing module, another way are that main control module and temperature detecting module are powered, the output of second Voltage stabilizing module
Terminate the power end of hearing aid module, the charge management module, switch module, hearing aid module and the second Voltage stabilizing module difference
It is connect with main control module, the temperature detecting module is used to detect the temperature of charge management module and battery protection module and will
Detection signal is exported to main control module, and the charging detecting model is for detecting whether power supply interface module has plant-grid connection simultaneously
It will test signal and be transferred to main control module.
It further, further include indicating lamp module, the indicating lamp module is connect with main control module.
Further, the main control module is realized by the MCU processor U6 of model EFM8SB10F8G.
Further, the charge management module and charging detecting model using the chip U1 of model SGM40561 come
It realizes, the PPR foot of the chip U1 connects the P1.5 foot of MCU processor U6, and the EN foot of the chip U1 connects MCU processor U6's
P0.7 foot.
Further, the switch module is the secondary switch circuit being made of PMOS tube Q1 and NMOS tube Q2.
Further, first Voltage stabilizing module is by the low pressure difference linear voltage regulator U2 of model SGM2036-3.3 Lai real
Existing, second Voltage stabilizing module is realized by the low pressure difference linear voltage regulator U4 of model SGM2036-1.3, the low voltage difference line
The EN foot series resistance R15 of property voltage-stablizer U4 connects the P0.0 foot of MCU processor U6.
Further, the temperature detecting module include thermistor NTC1 and resistance R11, the thermistor NTC1 and
Resistance R11 series connection is followed by between the output end and ground of the first Voltage stabilizing module, between the thermistor NTC1 and resistance R11
Node connects the P0.1 foot of MCU processor U6.
Further, the power supply interface module uses MICROUSB interface, and the VBUS foot of the MICROUSB interface is anti-
It is grounded to series diode D2.
Further, the programming interface of the hearing aid module is connect with the ID foot of MICROUSB interface, described
The ID foot of MICROUSB interface also differential concatenation diode D1 ground connection.
The advantageous effects of the utility model:
The utility model can break the power supply of hearing aid module automatically, avoid hearing aid module because of charging electricity in charging
The unstable damage caused to hearing aid module in source.
The protections such as the utility model can overcharge charging cell module, over-voltage, overcurrent, over-discharge.
The utility model detects the temperature of charge management module and battery protection module by temperature detecting module, works as temperature
When excessively high, charge management module is turned off, stops charging, avoiding entering the liquid such as sweat because of power supply interface module makes Charge Management mould
The problem of temperature of block and battery protection module is excessively high, and the entire casing of hearing aid is caused to melt, safety and reliability is high.
The power supply interface module setting diode D1 and D2 of the utility model carries out antistatic protection, avoid carry out it is slotting
When pulling out, electrostatic is damaged caused by hearing aid on hand.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model specific embodiment；
Fig. 2 is the circuit diagram of the utility model specific embodiment.
Specific embodiment
Now in conjunction with the drawings and specific embodiments, the present invention will be further described.
As illustrated in fig. 1 and 2, a kind of hearing aid circuit, including power supply interface module 10, charge management module 201, battery are protected
Protect module 21, charging cell module 30, switch module 40, hearing aid module 70, charging detecting model 202, main control module 80,
First Voltage stabilizing module 50, the second Voltage stabilizing module 60 and temperature detecting module 90, the output end of the power supply interface module 10 is all the way
The input terminal of charge management module 201 is connect, another way connects the input terminal of the first Voltage stabilizing module 50, the charge management module 201
Output termination charging cell module 30 input terminal, the battery protection module 21 is connect with charging cell module 30, described
The output end of charging cell module 30 connects the input terminal of the first Voltage stabilizing module 50, first Voltage stabilizing module by switch module 40
50 output end connects the input terminal of the second Voltage stabilizing module 60 all the way, and another way is that main control module 80 and temperature detecting module 90 supply
Electricity, the power end of the output termination hearing aid module 70 of second Voltage stabilizing module 60, the charge management module 201, switch
Module 40, hearing aid module 70 and the second Voltage stabilizing module 60 are connect with main control module 80 respectively, the temperature detecting module 90
It exports for detecting the temperature of charge management module 201 and battery protection module 21 and will test signal to main control module 80,
The charging detecting model 202, which is used to detect power supply interface module 10 whether to have plant-grid connection and will test signal, is transferred to master control
Molding block 80.
In this specific embodiment, the main control module is realized by the MCU processor U6 of model EFM8SB10F8G,
Referring to Fig. 2, this is no longer described in detail physical circuit.
In this specific embodiment, the charge management module 201 and charging detecting model 202 are integrated into Charge Management and inspection
It surveys in module 20, Charge Management is preferably realized using the chip U1 of model SGM40561 with detection module 20, the chip
The PPR foot (output end of charging detecting model 202) of U1 connects the P1.5 foot of MCU processor U6, the EN foot (charging of the chip U1
Enable end) connect the P0.7 foot of MCU processor U6.
In this specific embodiment, charging cell module 30 includes rechargeable battery BT1, and rechargeable battery BT1 is preferably lithium battery,
But not limited to this.The BAT foot (output end) of chip U1 connects the anode (input terminal) of rechargeable battery BT1.
In this specific embodiment, battery protection module 21 is realized using the chip U3 of model HM5463D, chip U3's
VDD foot connects the anode of rechargeable battery BT1, and the GND foot of chip U3 connects the cathode of rechargeable battery BT1, and chip U3 is to rechargeable battery BT1
It is overcharged, over-voltage, overcurrent, the protection such as over-discharge.
In this specific embodiment, the switch module 40 includes PMOS tube Q1 and NMOS tube Q2, first Voltage stabilizing module
50 are realized by the low pressure difference linear voltage regulator U2 of model SGM2036-3.3, and second Voltage stabilizing module 60 is by model
The low pressure difference linear voltage regulator U4 of SGM2036-1.3 realizes that the temperature detecting module 90 includes thermistor NTC1 and electricity
R11 is hindered, the hearing aid module 70 is realized by the chip U5 of model 92735, and the power supply interface module 10 uses
MICROUSB interface J1,
The VBUS foot (output end) of the MICROUSB interface J1 connects the VIN foot (input terminal) of chip U1, another way all the way
Series diode D4 connects the IN foot (input terminal) of low pressure difference linear voltage regulator U2, and the VBUS foot of the MICROUSB interface J1 is also anti-
It is grounded to series diode D2, is used for antistatic protection, when avoiding being plugged, electrostatic on hand is caused by hearing aid circuit
Damage.
The anode (output end) of the rechargeable battery BT1 is sequentially connected in series PMOS tube Q1 and diode D5, and to connect low pressure difference linearity steady
The grid of the IN foot of depressor U2, PMOS tube Q1 is grounded by NMOS tube Q2, and the gate series resistance R4 of NMOS tube Q2 connects MCU processing
The P1.3 foot of device U6.
The OUT foot (output end) of low pressure difference linear voltage regulator U2 connects VDD foot and the low pressure difference linearity pressure stabilizing of MCU processor U6
The IN foot (input terminal) of device U4, the thermistor NTC1 and resistance R11 series connection are followed by the OUT in low pressure difference linear voltage regulator U2
Between foot and ground, the node between the thermistor NTC1 and resistance R11 connects the P0.1 foot of MCU processor U6, thermistor
NTC1 is integrated on circuit board with chip U1 and U3 and is thermally contacted.
The EN foot series resistance R15 of the low pressure difference linear voltage regulator U4 connects the P0.0 foot of MCU processor U6, low voltage difference line
The OUT foot (output end) of property voltage-stablizer U4 connects the VCC foot of chip U5.
SDA foot (programming interface) the series resistance R1 of the chip U5 meets the ID foot of MICROUSB interface J1, MICROUSB
The ID foot of interface J1 also differential concatenation diode D1 ground connection, is used for antistatic protection, when avoiding being plugged, electrostatic pair on hand
It is damaged caused by hearing aid circuit.
It further, further include indicating lamp module 100, the indicating lamp module 100 is connect with main control module 80, this tool
In body embodiment, indicating lamp module 100 includes LED light LED1 and LED2, and referring to Fig. 2, this is no longer described in detail the specific circuit that connects.
When MICROUSB interface J1 connects extraneous power supply, extraneous power supply is rechargeable battery BT1 charging, core by chip U1
The PPR foot output low level of piece U1 drags down the level of the P1.5 foot of MCU processor U6, then MCU processor U6 detects charging
Battery BT1 is charging, and MCU processor U6 output signal turns off PMOS tube Q1 and low pressure difference linear voltage regulator U4, avoids hearing aid
Device module 70 because charge power supply it is unstable caused by damage to hearing aid module 70.
When MICROUSB interface J1 enters the liquid such as sweat or water, the temperature of chip U1 and U3 can rise, MCU processor
U6 detects that temperature more than after threshold value, outputs signal to the EN foot of chip U1 by temperature detecting module 90, disconnects its and stops
Charging avoids that the entire casing of hearing aid is caused to melt since temperature is excessively high, improves safety and reliability height, while output signal
To indicating lamp module 100, making LED light LED1 and LED2, alternately user is reminded in flashing.
Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered
This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details
On the utility model can be made a variety of changes, be the protection scope of the utility model.
Claims (9)
1. a kind of hearing aid circuit, including power supply interface module, charge management module, battery protection module, charging cell module,
Switch module and hearing aid module, it is characterised in that: further include charging detecting model, main control module, the first Voltage stabilizing module,
Two Voltage stabilizing modules and temperature detecting module, the output end of the power supply interface module connect the input terminal of charge management module all the way,
Another way connects the input terminal of the first Voltage stabilizing module, and the output of the charge management module terminates the input terminal of charging cell module,
The battery protection module is connect with charging cell module, and the output end of the charging cell module connects first by switch module
The output end of the input terminal of Voltage stabilizing module, first Voltage stabilizing module connects the input terminal of the second Voltage stabilizing module all the way, and another way is
Main control module and temperature detecting module power supply, the power end of the output termination hearing aid module of second Voltage stabilizing module, institute
It states charge management module, switch module, hearing aid module and the second Voltage stabilizing module to connect with main control module respectively, the temperature
Detection module is used to detect the temperature of charge management module and battery protection module and will test signal and exports to main control module,
The charging detecting model, which is used to detect power supply interface module whether to have plant-grid connection and will test signal, is transferred to master control molding
Block.
2. hearing aid circuit according to claim 1, it is characterised in that: it further include indicating lamp module, the indicator light mould
Block is connect with main control module.
3. hearing aid circuit according to claim 1, it is characterised in that: the main control module is by model
The MCU processor U5 of EFM8SB10F8G is realized.
4. hearing aid circuit according to claim 3, it is characterised in that: the charge management module and charging detecting model
It is realized using the chip U1 of model SGM40561, the PPR foot of the chip U1 connects the P1.5 foot of MCU processor U5, described
The EN foot of chip U1 connects the P0.7 foot of MCU processor U5.
5. hearing aid circuit according to claim 3, it is characterised in that: the switch module is by PMOS tube Q1 and NMOS
The secondary switch circuit of pipe Q2 composition.
6. hearing aid circuit according to claim 3, it is characterised in that: first Voltage stabilizing module is by model
The low pressure difference linear voltage regulator U2 of SGM2036-3.3 realizes that second Voltage stabilizing module is by the low of model SGM2036-1.3
Pressure difference linear voltage regulator U4 realizes that the EN foot series resistance R15 of the low pressure difference linear voltage regulator U4 connects MCU processor U5's
P0.0 foot.
7. hearing aid circuit according to claim 3, it is characterised in that: the temperature detecting module includes thermistor
NTC1 and resistance R11, the thermistor NTC1 and resistance R11 series connection are followed by output end and ground in the first Voltage stabilizing module
Between, the node between the thermistor NTC1 and resistance R11 connects the P0.1 foot of MCU processor U5.
8. hearing aid circuit according to claim 3, it is characterised in that: the power supply interface module uses MICRO USB
Interface, the VBUS foot differential concatenation diode D2 ground connection of the MICRO USB interface.
9. hearing aid circuit according to claim 8, it is characterised in that: the programming interface of the hearing aid module with
The ID foot of MICRO USB interface connects, the ID foot of the MICRO USB interface also differential concatenation diode D1 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820912450.1U CN208445752U (en) | 2018-06-13 | 2018-06-13 | A kind of hearing aid circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820912450.1U CN208445752U (en) | 2018-06-13 | 2018-06-13 | A kind of hearing aid circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208445752U true CN208445752U (en) | 2019-01-29 |
Family
ID=65089252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820912450.1U Active CN208445752U (en) | 2018-06-13 | 2018-06-13 | A kind of hearing aid circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208445752U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112437362A (en) * | 2019-08-26 | 2021-03-02 | 董前 | Multifunctional charging type stereo sound box |
| CN115276166A (en) * | 2022-08-03 | 2022-11-01 | 北京雷石天地电子技术有限公司 | Microphone charging device, microphone charging method, storage medium and vehicle-mounted microphone |
-
2018
- 2018-06-13 CN CN201820912450.1U patent/CN208445752U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112437362A (en) * | 2019-08-26 | 2021-03-02 | 董前 | Multifunctional charging type stereo sound box |
| CN115276166A (en) * | 2022-08-03 | 2022-11-01 | 北京雷石天地电子技术有限公司 | Microphone charging device, microphone charging method, storage medium and vehicle-mounted microphone |
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