CN202550492U - Battery recognition device - Google Patents
Battery recognition device Download PDFInfo
- Publication number
- CN202550492U CN202550492U CN 201220209143 CN201220209143U CN202550492U CN 202550492 U CN202550492 U CN 202550492U CN 201220209143 CN201220209143 CN 201220209143 CN 201220209143 U CN201220209143 U CN 201220209143U CN 202550492 U CN202550492 U CN 202550492U
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- China
- Prior art keywords
- contact
- battery
- pack
- control module
- temp
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- Expired - Lifetime
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Abstract
The utility model discloses a battery recognition device which comprises a device control module, a switch circuit module and a battery pack, wherein the battery pack is provided with a contact PACK+, a contact TEMP/DQ and a contact PACK-, the contact PACK+ is connected with a voltage input end VBAT (voltage of battery) of the device control module; the contact PACK- is connected with a grounding end GND of the device control module; and the contact TEMP/DQ is connected with an ADC (analog to digital converter) signal end and a GPIO2 (general purpose input/output 2 ) interface of the device control module. As the battery recognition device adopts a manner of multiplexing of a single wire communication contact and a temperature detection contact, the battery recognition and battery temperature detection on a battery can be realized by the battery pack with the three contacts with adding less circuits at a device end; and the battery recognition device has the advantages of low cost, small size and the like.
Description
Technical field
The utility model relates to a kind of battery identification device, is specifically related to a kind ofly can discern the device that detects with battery temperature to battery.
Background technology
At present, the power brick of most of charged pool identification all is provided with PACK+, PACK-, Temp (temperature detection pin), DQ four contacts such as (single line communication pin), thereby the battery connector that matches also must adopt four pins.The battery identification device of four contacts of this employing is unfavorable for the saving of PCB (Printed Circuit Board, printed circuit board) area, has increased the volume of battery connector, has also increased cost simultaneously.
The utility model content
Be the problem that overcomes the not enough of prior art and exist, the utility model provides the power brick of 3 contacts of a kind of employing to realize temperature detection and battery identification to battery, lower-cost battery identification device.
The utility model is realized through following technical scheme: a kind of battery identification device, comprise device control module, switching circuit module and power brick, and described power brick is provided with contact PACK+, contact TEMP/DQ and contact PACK-; Described contact PACK+ is connected with the voltage input end VBAT of device control module; Described contact PACK-is connected with the earth terminal GND of device control module; Described contact TEMP/DQ is connected with the analog-to-digital conversion signal end ADC and the general input/output interface GPIO2 of device control module, and the contact TEMP/DQ of said power brick also is connected with voltage source V TEMP through resistance R 2; The signal input part of described switching circuit module is connected with the general input/output interface GPIO1 of device control module, and its signal output part is connected with the contact TEMP/DQ of power brick through resistance R 1, and its voltage input end is connected with voltage source V DD.
Described power brick comprises battery identification module, battery protecting circuit module and electric core; The data communication port D of said battery identification module is connected with contact TEMP/DQ, and the earth terminal of said battery identification module is connected with the earth terminal of contact PACK-and battery protecting circuit module; The positive pole of said electric core is connected with the output plus terminal S+ of contact PACK+ and battery protecting circuit module, and the negative pole of electric core is connected with the output negative terminal S-of battery protecting circuit module; Also be provided with a thermistor NTC in the described power brick, the end of said thermistor NTC is connected with contact TEMP/DQ, and the other end is connected with contact PACK-.
The utility model adopts the multiplexing mode of single line communication contact and temperature detection contact; Increase the temperature detection that less circuit just can realize adopting the power brick of 3 contacts to come battery is carried out battery identification and battery in equipment end, taken into account the facility of cost and design preferably.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Embodiment
For the ease of those skilled in the art's understanding, the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.
Shown in accompanying drawing 1; A kind of battery identification device; Comprise device control module, switching circuit module and power brick; Described power brick is provided with contact PACK+, contact TEMP/DQ and contact PACK-, and described contact PACK+ is connected with the voltage input end VBAT of device control module, and described contact PACK-is connected with the earth terminal GND of device control module; Described contact TEMP/DQ is connected with the analog-to-digital conversion signal end ADC and the general input/output interface GPIO2 of device control module, and the contact TEMP/DQ of said power brick also is connected with voltage source V TEMP through resistance R 2; The signal input part of described switching circuit module is connected with the general input/output interface GPIO1 of device control module, and its signal output part is connected with the contact TEMP/DQ of power brick through resistance R 1, and its voltage input end is connected with voltage source V DD.
Described power brick comprises battery identification module, battery protecting circuit module and electric core; The data communication port D of said battery identification module is connected with contact TEMP/DQ, and the earth terminal of said battery identification module is connected with the earth terminal of contact PACK-and battery protecting circuit module; The positive pole of said electric core is connected with the output plus terminal S+ of contact PACK+ and battery protecting circuit module, and the negative pole of electric core is connected with the output negative terminal S-of battery protecting circuit module; Also be provided with a thermistor NTC in the described power brick, the end of said thermistor NTC is connected with contact TEMP/DQ, and the other end is connected with contact PACK-.
Below do briefly bright to the course of work of the utility model: when carrying out battery identification work, the general input/output interface GPIO1 output corresponding signal of device control module makes the switch conduction in the switching circuit module; At this moment; By the switching circuit module; Resistance R 1, R2; Thermistor NTC, voltage source V DD, VEMP, the Circuits System that the general input/output interface GPIO2 of device control module and battery identification module constitute can make carries out normal single line and communicates by letter and accomplish battery identification between battery identification module and the device control module.After accomplishing battery identification, the general input/output interface GPIO1 output corresponding signal of device control module breaks off the switch in the switching circuit module; At this moment, by voltage source V TEMP, resistance R 2, the Circuits System that the analog-to-digital conversion signal end ADC of thermistor NTC and device control module is constituted can make this install the temperature of test battery normally.
The foregoing description is the preferable implementation of the utility model, is not to be the qualification to the utility model, and under the prerequisite of the inventive concept that does not break away from the utility model, any conspicuous replacement is all within the protection range of the utility model.
Claims (6)
1. a battery identification device comprises device control module, switching circuit module and power brick, it is characterized in that: described power brick is provided with contact PACK+, contact TEMP/DQ and contact PACK-; Described contact PACK+ is connected with the voltage input end VBAT of device control module; Described contact PACK-is connected with the earth terminal GND of device control module, and described contact TEMP/DQ is connected with the analog-to-digital conversion signal end ADC and the general input/output interface GPIO2 of device control module; The signal input part of described switching circuit module is connected with the general input/output interface GPIO1 of device control module, and its signal output part is connected with the contact TEMP/DQ of power brick through resistance R 1.
2. battery identification device according to claim 1 is characterized in that: described power brick comprises battery identification module, battery protecting circuit module and electric core.
3. battery identification device according to claim 2 is characterized in that: also be provided with a thermistor NTC in the described power brick, the end of said thermistor NTC is connected with contact TEMP/DQ, and the other end is connected with contact PACK-.
4. battery identification device according to claim 3; It is characterized in that: the data communication port D of said battery identification module is connected with contact TEMP/DQ, and the earth terminal of said battery identification module is connected with the earth terminal of contact PACK-and battery protecting circuit module.
5. battery identification device according to claim 3 is characterized in that: the positive pole of said electric core is connected with the output plus terminal S+ of contact PACK+ and battery protecting circuit module, and the negative pole of electric core is connected with the output negative terminal S-of battery protecting circuit module.
6. according to each described battery identification device of claim 1-5, it is characterized in that: the contact TEMP/DQ of said power brick is connected with voltage source V TEMP through resistance R 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220209143 CN202550492U (en) | 2012-05-11 | 2012-05-11 | Battery recognition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220209143 CN202550492U (en) | 2012-05-11 | 2012-05-11 | Battery recognition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202550492U true CN202550492U (en) | 2012-11-21 |
Family
ID=47171061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220209143 Expired - Lifetime CN202550492U (en) | 2012-05-11 | 2012-05-11 | Battery recognition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202550492U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884383A (en) * | 2014-03-28 | 2014-06-25 | 深圳市中兴移动通信有限公司 | Temperature measurement and identification circuit of built-in battery, battery, detecting device and detecting method |
| WO2015103866A1 (en) * | 2014-01-09 | 2015-07-16 | 小米科技有限责任公司 | Power supply, power supply charging circuit and method, and terminal device |
| CN117110913A (en) * | 2023-10-13 | 2023-11-24 | 荣耀终端有限公司 | Battery detection circuit, electronic device, and battery detection method |
-
2012
- 2012-05-11 CN CN 201220209143 patent/CN202550492U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015103866A1 (en) * | 2014-01-09 | 2015-07-16 | 小米科技有限责任公司 | Power supply, power supply charging circuit and method, and terminal device |
| RU2629917C2 (en) * | 2014-01-09 | 2017-09-04 | Сяоми Инк. | Power source, charging circuit of power supply, method of charging power supply and terminal device |
| CN103884383A (en) * | 2014-03-28 | 2014-06-25 | 深圳市中兴移动通信有限公司 | Temperature measurement and identification circuit of built-in battery, battery, detecting device and detecting method |
| CN103884383B (en) * | 2014-03-28 | 2017-12-08 | 努比亚技术有限公司 | The thermometric and identification circuit of a kind of internal battery, battery, detection means and detection method |
| CN117110913A (en) * | 2023-10-13 | 2023-11-24 | 荣耀终端有限公司 | Battery detection circuit, electronic device, and battery detection method |
| CN117110913B (en) * | 2023-10-13 | 2024-04-05 | 荣耀终端有限公司 | Battery detection circuit, electronic device, and battery detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: Guangdong Opel Mobile Communications Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |
|
| CX01 | Expiry of patent term |