CN207992869U - A kind of device extending the main board for notebook computer button cell service life - Google Patents
A kind of device extending the main board for notebook computer button cell service life Download PDFInfo
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- CN207992869U CN207992869U CN201820088216.1U CN201820088216U CN207992869U CN 207992869 U CN207992869 U CN 207992869U CN 201820088216 U CN201820088216 U CN 201820088216U CN 207992869 U CN207992869 U CN 207992869U
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- diode
- button cell
- service life
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- main board
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Abstract
The utility model discloses a kind of devices extending the main board for notebook computer button cell service life, including diode D1, diode D19, diode D34 and ultracapacitor, the anode of the diode D1 connects system standby power supply, the cathode of diode D1 connects RTC chip, the anode of the anode connection button cell of diode D19, the cathode of the minus earth of button cell, diode D19 connects RTC chip, and RTC chip is also connected with CPU.The device in the extension main board for notebook computer button cell service life of the utility model makes the time that button cell needs supplying power for outside greatly reduce, to greatly extend the service life of button cell.
Description
Technical field
The utility model is related to computer realm, specifically a kind of dress for extending the main board for notebook computer button cell service life
It sets.
Background technology
In main board for notebook computer design field, the equipment such as mainboard RTC are for the maintainer when mainboard disconnects external power supply
The information such as system time and date, need continual externally fed, and conventional method is directly to be using a button cell thus
It is powered.But traditional button cell can not charge, and operating temperature range is narrow, rugged environment condition and continuous electric discharge,
So that button cell was just needed replacing every 2 to 4 years.The problem must not obtain always in laptop industry to be improved, therefore one
A new design that can greatly prolong button cell service life or method will change the unalterable state of industry and vast
What consumer welcome.
Existing notebook is that RTC power supplies are that a button cell is used to power for it.The shortcomings that such method is：Make
Button cell can not charge, and by continuous discharge once installation, and usage time is influenced by environmental temperature, finally
Cause user that will remove notebook mainboard every 2 to 4 years and replaces battery, and used batteries are easy pollution environment, dismount notebook
Also pretty troublesome.
Utility model content
The purpose of this utility model is to provide a kind of devices extending the main board for notebook computer button cell service life, with solution
Certainly the problems mentioned above in the background art.
To achieve the above object, the utility model provides the following technical solutions：
A kind of device extending the main board for notebook computer button cell service life, including diode D1, diode D19, two poles
The anode of pipe D34 and ultracapacitor, the diode D1 connects system standby power supply, and the cathode of diode D1 connects RTC cores
Piece, the anode of the anode connection button cell of diode D19, the minus earth of button cell, the cathode connection of diode D19
RTC chip, RTC chip are also connected with CPU, and the cathode of diode D34 is separately connected the anode of RTC chip and ultracapacitor, surpass
The cathode ground connection of grade capacitor, the anode of diode D34 connect system standby power supply.
Further technical solution as the utility model：The system standby power supply is 3.3V.
Further technical solution as the utility model：The rated voltage of the button cell is 3.3V.
Compared with prior art, the utility model has the beneficial effects that：The extension main board for notebook computer of the utility model
The device in button cell service life makes the time that button cell needs supplying power for outside greatly reduce, to greatly extend button electricity
The service life in pond.
Description of the drawings
Fig. 1 is the overall structure block diagram for the device for extending the main board for notebook computer button cell service life.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of device extending the main board for notebook computer button cell service life, including diode D1, two poles
The anode of pipe D19, diode D34 and ultracapacitor, the diode D1 connects system standby power supply, the cathode of diode D1
Connection RTC chip, the anode of the anode connection button cell of diode D19, the minus earth of button cell, diode D19's
Cathode connects RTC chip, and RTC chip is also connected with CPU, and the cathode of diode D34 is separately connected RTC chip and ultracapacitor
Anode, the cathode ground connection of ultracapacitor, the anode of diode D34 connect system standby power supply.System standby power supply is 3.3V.
The rated voltage of button cell is 3.3V.
The operation principle of the utility model is：Fig. 1 shows the system block diagrams for extending the button cell service life built in notebook.It should
The operation principle of system is such：
First by the anode of the system standby power supply of mainboard and button cell by after a diode again with RTC chip etc.
The chip power supply of uninterrupted power supply is needed, which can guarantee in the presence of system power supply button cell not supplying power for outside, only
There is main board system power supply power supply, when mainboard disconnects external power supply, is powered to RTC chip by button cell.
Secondly by the anode of the system standby power supply of mainboard and ultracapacitor by after a diode again by power cord
Road and RTC chip etc. need the chip power supply of uninterrupted power supply, when mainboard disconnects external power supply, by ultracapacitor to RTC
Chip power supply.
It will finally be connected via the two-way power supply of diode and power to RTC.
So when mainboard disconnects external power supply, as shown in Figure 1, system first powers to RTC by ultracapacitor, until
Ultracapacitor voltage be less than button cell voltage when, will by button cell to RTC power because ultracapacitor to RTC this
The continued power time of class chip is very long, so the time demand of button cell supplying power for outside can be greatly reduced.When mainboard again
Access external adapter power supply when, system standby power supply will charge to ultracapacitor, at the same the power supply of RTC from turn by system
Standby power is powered.
In conclusion due to using new design device so that button cell needs the time of supplying power for outside to greatly reduce,
So can greatly extend the service life of button cell.Ultracapacitor can charge repeatedly simultaneously, discharging is up to 50 to 100
Ten thousand times, service life is up to the more than ten years, so the completely new power-supply service novelty of introducing ultracapacitor solves current pen
The note industry relies on merely the problem that button cell causes battery life partially short.Total amount huge Notebook Battery in the world's is every several
Year is just replaced, and causes environmental pollution serious, using this new method of supplying power to/device, will greatly reduce and replace battery to environment
Caused by influence, have important practical significance.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (3)
1. a kind of device extending the main board for notebook computer button cell service life, including diode D1, diode D19, diode
D34 and ultracapacitor, which is characterized in that the anode of the diode D1 connects system standby power supply, the cathode of diode D1
Connection RTC chip, the anode of the anode connection button cell of diode D19, the minus earth of button cell, diode D19's
Cathode connects RTC chip, and RTC chip is also connected with CPU, and the cathode of diode D34 is separately connected RTC chip and ultracapacitor
Anode, the cathode ground connection of ultracapacitor, the anode of diode D34 connect system standby power supply.
2. a kind of device extending the main board for notebook computer button cell service life according to claim 1, which is characterized in that
The system standby power supply is 3.3V.
3. a kind of device extending the main board for notebook computer button cell service life according to claim 1, which is characterized in that
The rated voltage of the button cell is 3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820088216.1U CN207992869U (en) | 2018-01-19 | 2018-01-19 | A kind of device extending the main board for notebook computer button cell service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820088216.1U CN207992869U (en) | 2018-01-19 | 2018-01-19 | A kind of device extending the main board for notebook computer button cell service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207992869U true CN207992869U (en) | 2018-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201820088216.1U Active CN207992869U (en) | 2018-01-19 | 2018-01-19 | A kind of device extending the main board for notebook computer button cell service life |
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| CN (1) | CN207992869U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538370A (en) * | 2020-05-21 | 2020-08-14 | 合肥联宝信息技术有限公司 | Power supply circuit and power supply method for RTC |
-
2018
- 2018-01-19 CN CN201820088216.1U patent/CN207992869U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538370A (en) * | 2020-05-21 | 2020-08-14 | 合肥联宝信息技术有限公司 | Power supply circuit and power supply method for RTC |
| CN111538370B (en) * | 2020-05-21 | 2022-04-08 | 合肥联宝信息技术有限公司 | Power supply circuit and power supply method for RTC |
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