CN203838649U - Built-in power supply for notebook computer or all-in-one machine - Google Patents
Built-in power supply for notebook computer or all-in-one machine Download PDFInfo
- Publication number
- CN203838649U CN203838649U CN201420053763.8U CN201420053763U CN203838649U CN 203838649 U CN203838649 U CN 203838649U CN 201420053763 U CN201420053763 U CN 201420053763U CN 203838649 U CN203838649 U CN 203838649U
- Authority
- CN
- China
- Prior art keywords
- built
- power
- reduction module
- voltage reduction
- lithium battery
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 239000003990 capacitor Substances 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 230000002459 sustained effect Effects 0.000 claims description 11
- 230000010354 integration Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a built-in power supply for a notebook computer or an all-in-one machine. The built-in power supply comprises a lithium battery and a battery management unit connected with the lithium battery. The built-in power supply is characterized by further comprising a buck module, and the buck module is connected with the lithium battery and used for supplying power to an RTC of a main board; the negative electrode of the buck module is connected with the negative electrode of the lithium battery; the positive electrode of the buck module is connected with the positive terminal of a power line of the RTC of the main board. The built-in power supply aims at the notebook computer or the all-in-one machine with the built-in battery; as the built-in power supply cannot be detached after being assembled to form a complete machine, the lithium battery can be converted into a 3.3 V battery to simulate an RTC battery for supplying power to a system by arranging the buck module; accordingly, the occupied area of the main board is effectively saved.
Description
Technical field
The utility model relates to built-in power, particularly the built-in power with voltage reduction module of a kind of notebook or all-in-one (AIO:All In One).
Background technology
Notebook or all-in-one (AIO:All In One) all need real-time clock (RTC:Real-Time Clock) battery to ensure the power supply to mainboard chip RTC module under any state, but along with notebook and AIO are toward the development of frivolous direction, mainboard area is more and more less, electronic devices and components are also at past high density future development, and the area that RTC battery takies mainboard just seems increasing.
For notebook or AIO, RTC battery must all carry out the RTC module power supply to mainboard chip constantly on plank, to ensure the storage of complete machine clock and other information.In existing built-in power, RTC battery is directly welded on mainboard, causes taking a large amount of mainboard areas.In addition, RTC battery can also be connected with the connector being welded on mainboard with connector by wire rod, but except connector takies mainboard area, RTC battery still needs to be attached to mainboard or other places, has increased the cost of wire rod and connector.
Summary of the invention
The purpose of this utility model is to provide the built-in power of a kind of notebook or all-in-one, can solve notebook or AIO built-in power and take mainboard or the excessive problem of other local areas.
A kind of notebook the utility model proposes or the built-in power of all-in-one, comprise lithium battery, connects the battery management unit of described lithium battery, characterized by further comprising:
Connect the voltage reduction module for the RTC power supply to mainboard of described lithium battery;
The negative pole of described voltage reduction module connects the negative pole of described lithium battery;
The positive pole of described voltage reduction module connects the RTC power lead anode of mainboard via power connector.
Preferably, the number of described lithium battery is at least 2 strings.
Preferably, described voltage reduction module is the voltage reduction module that described lithium battery voltage step-down is converted to 3.3V voltage.
Preferably, described 3.3V voltage is the 3.3V voltage to the RTC power supply of mainboard.
Preferably, described voltage reduction module comprises variable power switch transistor Q, sustained diode, iron inductance coil L, filter capacitor C and pull-up resistor R.
Preferably, the emitter of described variable power switch transistor Q is connected with the positive pole of described lithium battery, and its collector is connected with described iron inductance coil L with the negative pole of described sustained diode respectively.
Preferably, one end of described filter capacitor C is connected with described iron inductance coil L, and its other end is connected with the positive pole of described sustained diode and the negative pole of described lithium battery respectively.
Preferably, described pull-up resistor R is in parallel with described filter capacitor C, and its current input terminal is as the positive pole of described voltage reduction module, and its current output terminal is as the negative pole of described voltage reduction module.
Preferably, described power connector comprises and the anodal pin pin being connected of described voltage reduction module.
Preferably, also comprise: motherboard connector comprises the pin pin for connecting described voltage reduction module positive pole, described pin pin is connected with the RTC power lead anode of described mainboard.
Compared with prior art, beneficial effect of the present invention is: can be by the method for voltage reduction module is set, and the power supply that lithium battery is converted to a road 3.3V is realized the power supply of simulation RTC battery to system, has effectively saved the area occupied of mainboard.
Brief description of the drawings
Fig. 1 is traditional built-in power of built-in power and the schematic diagram of RTC battery that the utility model embodiment provides;
Fig. 2 is the schematic diagram of the built-in power that provides of the utility model embodiment;
Fig. 3 is the internal circuit schematic diagram of the voltage reduction module of the built-in power that provides of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is elaborated, should be appreciated that following illustrated preferred embodiment is only for description and interpretation the present invention, and be not used in restriction the utility model.
Fig. 1 is traditional built-in power of built-in power and the schematic diagram of RTC battery that the utility model embodiment provides, as shown in Figure 1, comprising: the RTC battery 5 of battery core 1, battery management unit (BMU:Battery management unit) 2 for discharging and recharging, battery case 3, mainboard 4, Belt connector, power connector 6 and for inserting the motherboard connector 7 of built-in power.
In traditional notebook or AIO, RTC battery 5 is indispensable, is used for ensureing the power supply of the RTC module to mainboard chip under any state.Therefore, conventionally can be at the interior RTC battery 5 that a Belt connector is set of mainboard 4, the negative pole of this RTC battery 5 connects the pin pin that identifies earth polar in connector, its anodal pin pin that identifies 3.3V in connector that connects.
Be embodied in: the battery core voltage that battery core 1 produces is sent to the pin pin that identifies battery core voltage in power connector 6 via BMU2, other signals that BMU2 produces are sent to the pin pin that identifies other signals in power connector 6 via other signal wires, the earth polar of BMU2 connects the pin pin that identifies earth polar in power connector 6, and the pin pin of power connector 6 is corresponding with the pin pin of the motherboard connector 7 for inserting built-in power.
Fig. 2 is the schematic diagram of the built-in power that provides of the utility model embodiment, as shown in Figure 2, comprising: battery core 1, BMU2, battery case 3, the voltage reduction module 8 of powering for the RTC to mainboard being connected with described battery core 1, mainboard 4, power connector 9 and the motherboard connector 10 for slotting built-in power.
Connect the voltage reduction module 8 for the RTC power supply to mainboard of described battery core 1;
The negative pole of described voltage reduction module 8 connects the negative pole of described lithium battery;
The positive pole of described voltage reduction module 8 connects the RTC power lead anode of mainboard 4 via power connector 9.
Further, the number of described battery core 1 is at least 2 strings, and described battery core 1 can be lithium battery or poly-lithium battery.
Further, described voltage reduction module 8 is the voltage reduction modules 8 that described battery core voltage step-down are converted to 3.3V voltage.
Further, described 3.3V voltage is the 3.3V voltage to the RTC power supply of mainboard 4.
For built-in power (, non-removable battery system after composition complete machine), at the circuit of battery case inside, battery core (2 strings or more than) voltage is produced to the voltage of one group of 3.3V via voltage reduction module 8, be used for simulating RTC battery and power to system.The negative pole of voltage reduction module 8 is connected with the negative pole of battery core 1, and the positive pole of voltage reduction module 8 utilizes wire rod to be connected with power connector 9, sends the 3.3V voltage of generation to power connector 9 via wire rod.Wherein, the RTC battery that power connector 9 is 3.3V for the voltage simulating arranges a pin pin, and this pin pin connects the positive pole of voltage reduction module 8.
In addition, be also that the RTC battery simulating arranges a pin pin for inserting the motherboard connector 10 of built-in power, this pin pin is used for being connected with the positive pole of voltage reduction module 8, and is connected with the RTC power lead anode of mainboard 4.
Fig. 3 is the internal circuit schematic diagram of the voltage reduction module of the built-in power that provides of the utility model embodiment, and as shown in Figure 3, voltage reduction module comprises variable power switch transistor Q, sustained diode, iron inductance coil L, filter capacitor C and pull-up resistor R.Wherein, the emitter of variable power switch transistor Q is connected with the positive pole of described battery core, and its collector is connected with described iron inductance coil L with the negative pole of described sustained diode respectively.One end of filter capacitor C is connected with described iron inductance coil L, and its other end is connected with the positive pole of described sustained diode and the negative pole of described battery core respectively.Pull-up resistor R is in parallel with described filter capacitor C, and its current input terminal is as the positive pole of described voltage reduction module, and its current output terminal is as the negative pole of described voltage reduction module.
The principle of work of voltage reduction module is by controlling turning on and off of variable power switch transistor Q, input voltage being carried out to pulsed modulation, thereby realize DC/DC voltage transformation, makes the adjustable and voltage stabilizing of output voltage.Specific as follows:
In the time of variable power switch transistor Q conducting, sustained diode cut-off, iron inductance coil L magnetizes, and filter capacitor C charging, powers to pull-up resistor R;
In the time that variable power switch transistor Q ends, sustained diode afterflow, iron inductance coil L afterflow, filter capacitor C electric discharge, the voltage that maintains pull-up resistor R both sides is constant.
In sum, the utlity model has following technique effect: for built-in power notebook or AIO, because built-in power is non-dismountable after composition complete machine, can be by the method for voltage reduction module be set, the power supply that battery core is converted to a road 3.3V is realized the power supply of simulation RTC battery to system, has effectively saved mainboard space.
Although above the utility model is had been described in detail, the utility model is not limited to this, and those skilled in the art of the present technique can carry out various amendments according to principle of the present utility model.Therefore, all amendments of doing according to the utility model principle, all should be understood to fall into protection domain of the present utility model.
Claims (8)
1. a built-in power for notebook or all-in-one, comprises lithium battery, connects the battery management unit of described lithium battery, it is characterized in that, is arranged on also comprising in described notebook or all-in-one:
Connect the voltage reduction module for the RTC power supply to described notebook or integration machine mainboard of described lithium battery;
The negative pole of described voltage reduction module connects the negative pole of described lithium battery;
The positive pole of described voltage reduction module connects the RTC power lead anode of mainboard via power connector;
Wherein, described power connector comprises and the anodal pin pin being connected of described voltage reduction module;
Motherboard connector comprises the pin pin for connecting described voltage reduction module positive pole, and described pin pin is connected with the RTC power lead anode of described mainboard.
2. built-in power according to claim 1, is characterized in that, the number of described lithium battery is at least 2 strings.
3. built-in power according to claim 1, is characterized in that, described voltage reduction module is the voltage reduction module that described lithium battery voltage step-down is converted to 3.3V voltage.
4. built-in power according to claim 3, is characterized in that, described 3.3V voltage is the 3.3V voltage to the RTC power supply of mainboard.
5. according to the built-in power described in claim 1 or 3, it is characterized in that, described voltage reduction module comprises variable power switch transistor Q, sustained diode, iron inductance coil L, filter capacitor C and pull-up resistor R.
6. built-in power according to claim 5, is characterized in that, the emitter of described variable power switch transistor Q is connected with the positive pole of described lithium battery, and its collector is connected with described iron inductance coil L with the negative pole of described sustained diode respectively.
7. built-in power according to claim 5, is characterized in that, one end of described filter capacitor C is connected with described iron inductance coil L, and its other end is connected with the positive pole of described sustained diode and the negative pole of described lithium battery respectively.
8. built-in power according to claim 5, is characterized in that, described pull-up resistor R is in parallel with described filter capacitor C, and its current input terminal is as the positive pole of described voltage reduction module, and its current output terminal is as the negative pole of described voltage reduction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053763.8U CN203838649U (en) | 2014-01-27 | 2014-01-27 | Built-in power supply for notebook computer or all-in-one machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053763.8U CN203838649U (en) | 2014-01-27 | 2014-01-27 | Built-in power supply for notebook computer or all-in-one machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203838649U true CN203838649U (en) | 2014-09-17 |
Family
ID=51516466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420053763.8U Expired - Lifetime CN203838649U (en) | 2014-01-27 | 2014-01-27 | Built-in power supply for notebook computer or all-in-one machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203838649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256593A (en) * | 2018-09-11 | 2019-01-22 | 东莞市三臻科技发展有限公司 | Notebook Battery built in a kind of high security high-energy density |
-
2014
- 2014-01-27 CN CN201420053763.8U patent/CN203838649U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256593A (en) * | 2018-09-11 | 2019-01-22 | 东莞市三臻科技发展有限公司 | Notebook Battery built in a kind of high security high-energy density |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |