CN105676145A - Method and device for detecting temperature and ID of battery - Google Patents
Method and device for detecting temperature and ID of battery Download PDFInfo
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- CN105676145A CN105676145A CN201610198323.5A CN201610198323A CN105676145A CN 105676145 A CN105676145 A CN 105676145A CN 201610198323 A CN201610198323 A CN 201610198323A CN 105676145 A CN105676145 A CN 105676145A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- Nonlinear Science (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a method and device for detecting the temperature and ID of a battery. The device comprises an NTC resistor and a capacitor Cid which are arranged in the battery; one end of the NTC resistor and one end of the capacitor Cid are connected in series with an NTC/ID pin; the other end of the NTC resistor and the other end of the capacitor Cid are connected with GND; the device also comprises a resistor R1; one end of the resistor R1 is connected with the NTC/ID pin extending out from the battery, and the other end of the resistor R1 is connected with an IO port of a host controller; and the NTC/ID pin extending out from the battery is also connected with an ADC pin of the host controller. The device of the invention has the advantages of simple circuit and low cost. The device of the invention only occupies one pin of the battery and one ADC of a host, and can effectively improve ID detection accuracy.
Description
Technical field
The present invention relates to electronic circuit and technical field of mobile terminals, be specifically related to a kind of method detecting battery temperature and ID and device.
Background technology
Traditional mobile terminal equipment in use, it is generally required to the ID(identity to set of cells, identity number) detect, whether detection battery in place, and judge the model of battery, specification, whether legal etc. It addition, mobile terminal device also needs to battery temperature is detected, it is to avoid at too high or too low temperature, battery is charged.
Detection ID and temperature generally have three kinds of ways at present:
The first way: adopt special detection chip to be built on battery, this chip is except detecting battery ID, battery temperature can also be detected, and inform main frame by the method for digital signal communication, this way needs to increase a detection chip with temperature sampling and content storage, host resource occupancy is high, and power consumption is high, and costly;
The second way: increase an ID foot for battery identification on battery, be generally adopted the resistance of a fixed resistance value, battery ID is detected by the ADC that fixed value resistance is linked into main frame by ID foot; Additionally also need to increase a pin for detection battery temperature, by the NTC(negativetemperaturecoefficient at inside battery, negative temperature coefficient) resistance is linked into the ADC port of main frame and temperature detected, this way is simple and cost is low, but needs to take the two-way ADC mouth of two pins of battery and main frame;
The third way: ID is identified, and resistance and temperature detection resistance use same NTC resistance, namely the resistance within the scope of Host Detection to reasonable temperature is regarded as same ID, this way has saved the pin of battery, simplifies design, but ID accuracy of detection is very poor;
In order to overcome existing methods shortcoming, the present invention proposes a kind of method detecting battery temperature and ID and device.
Summary of the invention
It is an object of the invention to provide a kind of method detecting battery temperature and ID and device, circuit of the present invention is simple, and cost is low, and the present invention only takes up an ADC of one pin of battery and main frame, and is effectively improved ID accuracy of detection.
For achieving the above object, the technical scheme is that a kind of method detecting battery temperature and ID, comprise the steps,
S1: at inside battery, NTC/ID pin connects a NTC resistance to GND, and at this NTC resistance two ends parallel connection one electric capacity Cid, the NTC/ID pin stretched out by outside batteries is connected with the ADC pin of console controller, and the NTC/ID pin simultaneously stretched out by outside batteries is connected to the I/O port of console controller by resistance R1;
S2: detection battery temperature: I/O port is set high level, first scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, the magnitude of voltage according to the resistance of resistance R1 and NTC/ID pin, inside battery NTC resistance can be calculated, thus drawing internal temperature of battery value;
S3: detection battery ID: I/O port is set high level, first scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, the magnitude of voltage according to the resistance of resistance R1 and NTC/ID pin, inside battery NTC resistance can be calculated; Then I/O port is set low level, second scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, resistance according to resistance R1, NTC resistance and the magnitude of voltage of NTC/ID pin, electric capacity Cid value can be calculated, by comparing with the Cid value preset in console controller, thus knowing battery ID;
S4: detection terminates, and I/O port is set low level.
In an embodiment of the present invention, described step S2 is implemented as follows:
I/O port sets high level Vio, first scheduled time of interval, and the magnitude of voltage formula of ADC pin sampling NTC/ID pin is as follows,
Wherein, Vadc is the magnitude of voltage of ADC pin sampling NTC/ID pin, and R1 is resistance R1 resistance, and Vio is the high level voltage value of I/O port output, and NTC is required inside battery NTC resistance;
According to Vadc, R1 and Vio, inside battery NTC resistance can be calculated, thus can draw internal temperature of battery value.
In an embodiment of the present invention, described step S3 is implemented as follows:
(1) I/O port setting high level Vio, first scheduled time of interval, the magnitude of voltage formula of ADC pin sampling NTC/ID pin is as follows,
Wherein, Vadc is the magnitude of voltage of ADC pin sampling NTC/ID pin, and R1 is resistance R1 resistance, and Vio is I/O port output voltage values, and NTC is required inside battery NTC resistance; According to Vadc, R1 and Vio, inside battery NTC resistance can be calculated;
(2) I/O port setting low level 0V, the magnitude of voltage formula of second scheduled time of interval t, ADC pin sampling NTC/ID pin is as follows,
Wherein, according to, R1, NTC and Vio, electric capacity Cid value can be calculated, thus knowing battery ID.
In an embodiment of the present invention, described first scheduled time should be greater than the charging interval of electric capacity Cid, and second scheduled time should be less than the discharge time of electric capacity Cid.
In an embodiment of the present invention, described resistance R1 is fixed value resistance.
Present invention also offers a kind of device detecting battery temperature and ID, including at inside battery, NTC resistance that one end is connected in series with NTC/ID pin respectively, electric capacity Cid, NTC resistance, electric capacity Cid the other end be connected be connected to GND, the resistance R1 that the NTC/ID pin also including stretching out with outside batteries one end is connected, the other end of resistance R1 is connected to the I/O port of console controller, and the NTC/ID pin that described outside batteries stretches out is additionally coupled to the ADC pin of console controller.
In an embodiment of the present invention, described resistance R1 is fixed value resistance.
Compared to prior art, the method have the advantages that
1, circuit of the present invention is simple, and cost is low;
2, the present invention only takes up an ADC of one pin of battery and main frame;
3, the present invention effectively raises ID accuracy of detection.
Accompanying drawing explanation
Fig. 1 is circuit realiration structured flowchart of the present invention.
Fig. 2 is the state switching figure of presently disclosed method.
Fig. 3 is electric capacity Cid charging/discharging voltage oscillogram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is specifically described.
A kind of method detecting battery temperature and ID of the present invention, comprises the steps,
S1: at inside battery, NTC/ID pin connects a NTC resistance to GND, and at this NTC resistance two ends parallel connection one electric capacity Cid, the NTC/ID pin stretched out by outside batteries is connected with the ADC pin of console controller, and the NTC/ID pin simultaneously stretched out by outside batteries passes through resistance R1(fixed value resistance) it is connected to the I/O port of console controller;
S2: detection battery temperature: I/O port is set high level, first scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, the magnitude of voltage according to the resistance of resistance R1 and NTC/ID pin, inside battery NTC resistance can be calculated, thus drawing internal temperature of battery value;
S3: detection battery ID: I/O port is set high level, first scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, the magnitude of voltage according to the resistance of resistance R1 and NTC/ID pin, inside battery NTC resistance can be calculated; Then I/O port is set low level, second scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, resistance according to resistance R1, NTC resistance and the magnitude of voltage of NTC/ID pin, electric capacity Cid value can be calculated, by comparing with the Cid value preset in console controller, thus knowing battery ID;
S4: detection terminates, and I/O port is set low level.
Described step S2 is implemented as follows:
I/O port sets high level Vio, first scheduled time of interval, and the magnitude of voltage formula of ADC pin sampling NTC/ID pin is as follows,
Wherein, Vadc is the magnitude of voltage of ADC pin sampling NTC/ID pin, and R1 is resistance R1 resistance, and Vio is the high level voltage value of I/O port output, and NTC is required inside battery NTC resistance;
According to Vadc, R1 and Vio, inside battery NTC resistance can be calculated, thus can draw internal temperature of battery value.
Described step S3 is implemented as follows:
(1) I/O port setting high level Vio, first scheduled time of interval, the magnitude of voltage formula of ADC pin sampling NTC/ID pin is as follows,
Wherein, Vadc is the magnitude of voltage of ADC pin sampling NTC/ID pin, and R1 is resistance R1 resistance, and Vio is I/O port output voltage values, and NTC is required inside battery NTC resistance; According to Vadc, R1 and Vio, inside battery NTC resistance can be calculated;
(2) I/O port setting low level 0V, the magnitude of voltage formula of second scheduled time of interval t, ADC pin sampling NTC/ID pin is as follows,
Wherein, according to, R1, NTC and Vio, electric capacity Cid value can be calculated, thus knowing battery ID.
Described first scheduled time should be greater than the charging interval of electric capacity Cid, and second scheduled time should be less than the discharge time of electric capacity Cid.
Present invention also offers a kind of device detecting battery temperature and ID, including at inside battery, NTC resistance that one end is connected in series with NTC/ID pin respectively, electric capacity Cid, NTC resistance, electric capacity Cid the other end be connected be connected to GND, the resistance R1 that the NTC/ID pin also including stretching out with outside batteries one end is connected, the other end of resistance R1 is connected to the I/O port of console controller, and the NTC/ID pin that described outside batteries stretches out is additionally coupled to the ADC pin of console controller. For making those skilled in the art become more apparent upon technical solution of the present invention, that tells about the present invention in detail below realizes process.
The invention provides a kind of method and apparatus detecting battery temperature and ID.For making the purpose of the present invention, technical scheme and effect clearly clear and definite, below with reference to accompanying drawing examples, the present invention is described in more detail. Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
As Fig. 1,2, the resistance R1 value 10K Ω on main frame, the NTC battery of inside battery resistance of (25 DEG C) when room temperature is also 10K Ω, and at other temperature, NTC shows as different resistance. Main frame I/O port high level is 3.3V, and low level is 0V. There is A and B two battery, its internal Cid respectively 0.1uF and 1uF. Duty is as follows:
State 1): during initial or idle condition, I/O port output 0V, the voltage Vadc=0V that host A DC detects, testing circuit power consumption is zero.
State 2): when needing detection battery temperature, I/O port is set to high level 3.3V by main frame, now Cid starts to charge up, such as Fig. 3, the voltage Vadc that host A DC detects gradually rises from 0V, and after the time (such as 100ms) one longer, Cid is full of, the now Vadc voltage partial pressure value equal to R1 and NTC, it may be assumed that
It is worth according to Vadc and R1, it is possible to calculate the resistance of NTC, and then calculates or table look-up and obtain temperature value,
State 3): when needing detection battery ID, I/O port is set to low level 0V by high level 3.3V by the basis of state 2, now R1 and NTC is discharged by electric capacity Cid, such as Fig. 3, the partial pressure value of the voltage Vadc that host A DC detects R1 and NTC from state 2 starts to be gradually reduced, after one section of short period (such as 1ms), host A DC samples, and Vadc is equal to
It is worth according to Vadc, R1 and NTC, it is possible to calculate electric capacity Cid value, and then to identify be battery A or battery B.
After detection terminates, I/O port setting low level 0V again, returns to state 1, testing circuit power consumption is zero.
Outside calculating except with formula, the another embodiment of this patent is to adopt look-up table, in examples detailed above, can in advance look-up table be stored in host software, table look at can obtain battery temperature and ID according to the magnitude of voltage Vadc sampled in state 2 and state 3. A kind of feasible look-up table 1 structure is as follows
Such as sampling voltage 2.1V in state 2, sample 1.8V in state 3, lookup table is it can be seen that the battery temperature of correspondence is 10 DEG C, and battery size is B, by that analogy.
The another embodiment of state 3 is the charging process voltage detecting and becoming electric capacity Cid state 1 from state 0, and concrete grammar is similar, does not describe in detail.
It is above presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, when produced function is without departing from the scope of technical solution of the present invention, belong to protection scope of the present invention.
Claims (7)
1. the method detecting battery temperature and ID, it is characterised in that: comprise the steps,
S1: at inside battery, NTC/ID pin connects a NTC resistance to GND, and at this NTC resistance two ends parallel connection one electric capacity Cid, the NTC/ID pin stretched out by outside batteries is connected with the ADC pin of console controller, and the NTC/ID pin simultaneously stretched out by outside batteries is connected to the I/O port of console controller by resistance R1;
S2: detection battery temperature: I/O port is set high level, first scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, the magnitude of voltage according to the resistance of resistance R1 and NTC/ID pin, inside battery NTC resistance can be calculated, thus drawing internal temperature of battery value;
S3: detection battery ID: I/O port is set high level, first scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, the magnitude of voltage according to the resistance of resistance R1 and NTC/ID pin, inside battery NTC resistance can be calculated; Then I/O port is set low level, second scheduled time of interval, the magnitude of voltage of ADC pin sampling NTC/ID pin, resistance according to resistance R1, NTC resistance and the magnitude of voltage of NTC/ID pin, electric capacity Cid value can be calculated, by comparing with the Cid value preset in console controller, thus knowing battery ID;
S4: detection terminates, and I/O port is set low level.
2. the method for detection battery temperature according to claim 1 and ID, it is characterised in that: described step S2 is implemented as follows:
I/O port sets high level Vio, first scheduled time of interval, and the magnitude of voltage formula of ADC pin sampling NTC/ID pin is as follows,
Wherein, Vadc is the magnitude of voltage of ADC pin sampling NTC/ID pin, and R1 is resistance R1 resistance, and Vio is the high level voltage value of I/O port output, and NTC is required inside battery NTC resistance;
According to Vadc, R1 and Vio, inside battery NTC resistance can be calculated, thus can draw internal temperature of battery value.
3. the method for detection battery temperature according to claim 1 and ID, it is characterised in that: described step S3 is implemented as follows:
(1) I/O port setting high level Vio, first scheduled time of interval, the magnitude of voltage formula of ADC pin sampling NTC/ID pin is as follows,
Wherein, Vadc is the magnitude of voltage of ADC pin sampling NTC/ID pin, and R1 is resistance R1 resistance, and Vio is I/O port output voltage values, and NTC is required inside battery NTC resistance; According to Vadc, R1 and Vio, inside battery NTC resistance can be calculated;
(2) I/O port setting low level 0V, the magnitude of voltage formula of second scheduled time of interval t, ADC pin sampling NTC/ID pin is as follows,
Wherein, according to, R1, NTC and Vio, electric capacity Cid value can be calculated, thus knowing battery ID.
4. the method for detection battery temperature according to claim 1 and ID, it is characterised in that: described first scheduled time should be greater than the charging interval of electric capacity Cid, and second scheduled time should be less than the discharge time of electric capacity Cid.
5. the method for detection battery temperature according to claim 1 and ID, it is characterised in that: described resistance R1 is fixed value resistance.
6. the device detecting battery temperature and ID, it is characterized in that: include at inside battery, NTC resistance that one end is connected in series with NTC/ID pin respectively, electric capacity Cid, NTC resistance, electric capacity Cid the other end be connected be connected to GND, the resistance R1 that the NTC/ID pin also including stretching out with outside batteries one end is connected, the other end of resistance R1 is connected to the I/O port of console controller, and the NTC/ID pin that described outside batteries stretches out is additionally coupled to the ADC pin of console controller.
7. the device of detection battery temperature according to claim 6 and ID, it is characterised in that: described resistance R1 is fixed value resistance.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198323.5A CN105676145A (en) | 2016-04-01 | 2016-04-01 | Method and device for detecting temperature and ID of battery |
| PCT/CN2016/094781 WO2017166573A1 (en) | 2016-04-01 | 2016-08-12 | Method and apparatus for detecting battery temperature and id |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610198323.5A CN105676145A (en) | 2016-04-01 | 2016-04-01 | Method and device for detecting temperature and ID of battery |
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| CN105676145A true CN105676145A (en) | 2016-06-15 |
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| CN106501723A (en) * | 2016-09-27 | 2017-03-15 | 宁波三星医疗电气股份有限公司 | A kind of for external battery detection circuit in three-phase kilowatt-hour meter |
| WO2017166573A1 (en) * | 2016-04-01 | 2017-10-05 | 福建联迪商用设备有限公司 | Method and apparatus for detecting battery temperature and id |
| CN107271917A (en) * | 2017-07-19 | 2017-10-20 | 上海鼎为电子科技（集团）有限公司 | Battery detection circuit and mobile terminal |
| CN109473736A (en) * | 2017-09-08 | 2019-03-15 | 上海比亚迪有限公司 | Resistor detection method, charge/discharge control method, device and the electronic equipment of battery |
| CN110133402A (en) * | 2019-05-14 | 2019-08-16 | 惠州Tcl移动通信有限公司 | A kind of position finding and detection method, system and the mobile terminal of circuit board screw |
| CN112304460A (en) * | 2020-10-20 | 2021-02-02 | 青岛依爱通信设备有限公司 | Single-path AD sampling circuit, system and method based on double-MOS tube conduction switching |
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| CN110133402A (en) * | 2019-05-14 | 2019-08-16 | 惠州Tcl移动通信有限公司 | A kind of position finding and detection method, system and the mobile terminal of circuit board screw |
| CN112304460A (en) * | 2020-10-20 | 2021-02-02 | 青岛依爱通信设备有限公司 | Single-path AD sampling circuit, system and method based on double-MOS tube conduction switching |
| CN112304460B (en) * | 2020-10-20 | 2023-01-24 | 青岛依爱科技有限公司 | Single-path AD sampling circuit, system and method based on double-MOS tube conduction switching |
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| Publication number | Publication date |
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| WO2017166573A1 (en) | 2017-10-05 |
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