CN202940624U - Battery electrical-core identification circuit - Google Patents
Battery electrical-core identification circuit Download PDFInfo
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- CN202940624U CN202940624U CN 201220688045 CN201220688045U CN202940624U CN 202940624 U CN202940624 U CN 202940624U CN 201220688045 CN201220688045 CN 201220688045 CN 201220688045 U CN201220688045 U CN 201220688045U CN 202940624 U CN202940624 U CN 202940624U
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Abstract
A battery electrical-core identification circuit comprises an electrical core circuit, a battery connector circuit and an MCU connected with each other successively and mutually, wherein the electrical core circuit consists of a battery GND interface, a resistor R1 and a signal line interface ID connected with each other successively and mutually; and the signal line interface ID of the electrical core circuit is connected with an input interface ID of a battery connector. One circuit of the input interface ID of the battery connector is connected with pull-up resistor R2 and then is connected with a power supply anode V+. The other circuit of the input interface ID is connected with a detection interface of the MCU. The resistor R2 is a fixed value resistor. The resistor R1 is set based on electrical-core voltage specification. The detection interface of the MCU detects actual voltage values. The actual voltage value detected by an ADC is V0=R1*V/(R1+R2). According to detection voltage scopes of the ADC of the MCU, the different R1 is selected for different specifications of the electrical cores and different voltage is detected by the ADC of the MCU after voltage is divided. The MCU distinguishes the corresponding electrical core specification based on the detected different voltage. When the electrical core type is detected, matched parameters are called for a coulometer, so that precise detection of the coulometer on battery electric quantity is raised.
Description
Technical field
The present invention relates to a kind of battery of mobile terminal, particularly relate to a kind of battery battery core identification circuit.
Background technology
Due to mobile terminal, particularly the smart mobile phone power consumption is generally larger, accurate battery electric quantity detects and seems particularly important, the user can have more accurately, and electric weight detects the use planning of carrying out mobile phone, be unlikely to occur obviously to show electricity and be in fact that low-voltage causes the problem of shutting down, therefore voltameter has more and more been used on smart mobile phone, and accurate battery electric quantity detects and can greatly promote user's experience.
Because its electrical property of different battery cores often there are differences, thus the electric weight detected parameters of some battery cores and inapplicable and another piece battery core, because the accuracy that subtle difference will cause detecting descends greatly.So when certain a product needed is used two kinds of even above specification battery cores, just must do the identification differentiation to the different size battery core in order to guarantee voltameter to the accuracy that each battery core electric weight detects.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of battery battery core identification circuit is provided, and can effectively identify the different size battery, and Measurement accuracy battery core electric weight promotes the user and experiences.
In order to achieve the above object, the technical solution adopted in the utility model is: a kind of battery battery core identification circuit, comprise successively interconnective battery core circuit, battery connector circuit and MCU, described battery core circuit is by interconnective battery GND interface successively, resistance R 1 and signal wire interface ID form, and the signal wire interface ID of battery core circuit meets the input interface ID of battery connector; Meet positive source V+ after the described input interface ID one tunnel that connects battery connector connects a pull-up resistor R2, another road connects the detection interface of MCU.
Further, described resistance R 2 is fixed value resistance.
Further, described resistance R 1 arranges according to the battery core voltage specification.
Compared with prior art, the beneficial effects of the utility model are: detect voltage range according to MCU ADC the different size battery core is chosen different R1, detect for MCU ADC thereby will obtain different voltage after dividing potential drop.MCU divides corresponding battery core specification according to the different voltage zones that detect.Call the parameter that is complementary to voltameter after detecting the battery core type, improved the accurate detection of voltameter to battery electric quantity; The mainboard of mobile terminal need not any change, only need to require the different R1 of battery core producer's use can realize compatibility according to different battery cores, and manufacturer need not the mainboard change for mobile terminal, has saved cost.
Description of drawings
Fig. 1 is schematic block circuit diagram of the present utility model.
Embodiment
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, in order to technical characterictic of the present utility model and advantage are carried out more deep annotation.
Schematic block circuit diagram of the present utility model as shown in Figure 1, a kind of battery battery core identification circuit, comprise successively interconnective battery core circuit, battery connector circuit and MCU, described battery core circuit is by interconnective battery GND interface successively, resistance R 1 and signal wire interface ID form, and the signal wire interface ID of battery core circuit meets the input interface ID of battery connector; Meet positive source V+ after the described input interface ID one tunnel that connects battery connector connects a pull-up resistor R2, another road connects the detection interface of MCU.
Further, described resistance R 2 is fixed value resistance.
Further, described resistance R 1 arranges according to the battery core voltage specification.
A kind of recognition methods of described battery battery core identification circuit comprises the following steps:
Step 1, read magnitude of voltage at the detection interface ADC place of MCU;
Step 2, obtain the resistance value of battery core R1 according to computing formula Vo=R1*V/ (R1+R2);
Step 4, MCU call with the electric weight of the corresponding voltage parameter amount of power supply of battery core voltage specification meter to mobile terminal according to voltage specification and detect in real time.
The principle that ADC detects is as follows: MCU generally can have several ADC to detect pin, general for doing temperature detection, namely by thermistor and fixed value resistance dividing potential drop (being interpreted as that R1 is thermistor) thermistor corresponding different resistance at different temperature, so will obtain different voltage after dividing potential drop, be that temperature-resistance-magnitude of voltage forms an association, software will go corresponding temperature by the magnitude of voltage that detects like this, thereby realizes the detection of temperature.The ADC of MCU is generally 10 ADC, and it has a reference voltage U, namely detects electrical voltage point and can not exceed this voltage, and no person can damage chip.Drawing power supply on case of external is V again, the ADC pin senses can be done further processing through ADC after relevant voltage, that is: R1*V*1024/ (R1+R2) U, namely change by ADC voltage transitions is concrete numeral, if 10 ADC, it is higher that this numeral is the 1024.ADC figure place to the maximum, and the scale that detects voltage/temperature is just meticulousr.But ADC also can be used for the test of voltage, and namely by resistance R 1 and fixed value resistance dividing potential drop, R1 is different, so will obtain different voltage after dividing potential drop, be that resistance R1-magnitude of voltage forms an association, software will go corresponding temperature by the magnitude of voltage that detects like this, thereby realizes the detection of temperature.The utility model only need be set R1 and get final product.
When battery battery core selects suitable R1 to make the different size battery core, ADC judges by detecting actual partial pressure value.The detection interface of MCU detects actual voltage value, the computing formula of the actual voltage value that ADC detects is Vo=R1*V/ (R1+R2), detect voltage range according to MCU ADC the different size battery core is chosen different R1, detect for MCU ADC thereby will obtain different voltage after dividing potential drop.MCU divides corresponding battery core specification according to the different voltage zones that detect.Call the parameter that is complementary to voltameter after detecting the battery core type, improved the accurate detection of voltameter to battery electric quantity.
Above content is in conjunction with concrete optimal way further detailed description of the utility model, should not assert that concrete enforcement of the present utility model is confined to above explanation.For those skilled in the art, without departing from the concept of the premise utility, can also make some simple deduction or replace, within the protection range that the claim that all should be considered as being submitted to by the utility model is determined.
Claims (3)
1. battery battery core identification circuit, comprise successively interconnective battery core circuit, battery connector circuit and MCU, it is characterized in that: described battery core circuit is by interconnective battery GND interface successively, resistance R 1 and signal wire interface ID form, and the signal wire interface ID of battery core circuit meets the input interface ID of battery connector; Meet positive source V+ after the described input interface ID one tunnel that connects battery connector connects a pull-up resistor R2, another road meets the detection interface ADC of MCU.
2. battery battery core identification circuit according to claim 1 is characterized in that: described resistance R 2 is fixed value resistance.
3. battery battery core identification circuit according to claim 1, it is characterized in that: described resistance R 1 arranges according to the battery core voltage specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688045 CN202940624U (en) | 2012-12-13 | 2012-12-13 | Battery electrical-core identification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688045 CN202940624U (en) | 2012-12-13 | 2012-12-13 | Battery electrical-core identification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940624U true CN202940624U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220688045 Expired - Lifetime CN202940624U (en) | 2012-12-13 | 2012-12-13 | Battery electrical-core identification circuit |
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| Country | Link |
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| CN (1) | CN202940624U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078363A (en) * | 2012-12-13 | 2013-05-01 | 广东欧珀移动通信有限公司 | Battery cell identification circuit and identification method thereof |
-
2012
- 2012-12-13 CN CN 201220688045 patent/CN202940624U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078363A (en) * | 2012-12-13 | 2013-05-01 | 广东欧珀移动通信有限公司 | Battery cell identification circuit and identification method thereof |
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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: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |
|
| CX01 | Expiry of patent term |