CN103336245A - Battery state detecting method, radio frequency identification device and battery detecting system - Google Patents
Battery state detecting method, radio frequency identification device and battery detecting system Download PDFInfo
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Abstract
The invention discloses a battery state detecting method, a radio frequency identification device and a battery detecting system, relates to the field of battery power supplies, and solves the problem that the battery state cannot be mastered in the prior art, and achieves intelligentized management control to the batteries. The battery state detecting method provided by the embodiment of the invention comprises the followings: recognizing battery specification; controlling battery discharging; detecting discharging data during the battery discharging process; obtaining battery capacity coefficient according to discharging data and pre-arranged parameter tables of batteries with different specifications; calculating battery state data according to discharging data and the battery capacity coefficient.
Description
Technical field
The present invention relates to the battery supply field, relate in particular to a kind of battery status detection method, rfid device and battery testing system.
Background technology
Along with improving constantly of the continuous development of science and technology, the level of the productive forces, connecting each other of each class of electronic devices and the daily productive life of people is also more and more tightr.To electric automobile, little of TV, mobile phone, game machine etc. greatly, embodied the dependence of people to electronic equipment invariably.
As a kind of important powering mode of electronic equipment, battery provides work required electric energy for electronic equipment, and the work of drive electronics efficient stable is played crucial effects.Different according on its material and the working method, common battery types has chemical cell, fuel cell, electrolytic cell etc.Be example with the chemical cell, the principle of work of this type of battery is the chemical energy of its internal reservoir mode by electrochemical reaction to be converted into electric energy discharge.
Yet the inventor finds that there are the following problems at least in the prior art: be accompanied by the charging and discharging process of battery, battery status can change.And the battery detecting method of prior art can't be grasped battery status, so can't realize battery is carried out the purpose of intelligent management control.
Summary of the invention
Embodiments of the invention provide a kind of battery status detection method, rfid device and battery testing system, have solved the problem that can't grasp battery status that exists in the prior art, realize the battery intelligent management is controlled.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
A kind of battery status detection method comprises:
Identification battery specification;
The control battery discharge;
Detect the discharge data in the battery discharge procedure;
According to described discharge data and a plurality of specification battery parameter preset table, obtain the battery capacity coefficient;
According to described discharge data and described battery capacity coefficient, calculate the battery status data.
In first kind of possible implementation, before described control battery discharge, also comprise:
Form a plurality of specification battery parameter preset tables, described parameter preset table comprises the contrast relationship of discharge data and battery capacity coefficient.
In second kind of possible implementation, described method also comprises:
Detect described battery status data, when described battery status data fit preset standard, show described battery status data.
In conjunction with first aspect, first kind of possible implementation of first aspect and second kind of possible implementation of first aspect, described discharge data comprises the arbitrary data in discharge current, discharge cut-off voltage, discharge time and the temperature.
In conjunction with first aspect, first kind of possible implementation of first aspect and second kind of possible implementation of first aspect, described battery status data comprise battery actual capacity and battery health degree index.
On the one hand, the embodiment of the invention also provides a kind of rfid device, comprising again:
Recognition unit is used for identification battery specification;
Control module is used for the control battery discharge;
Detecting unit is for detection of the discharge data in the battery discharge procedure;
Computing unit is used for according to described discharge data and a plurality of specification battery parameter preset table, obtains the battery capacity coefficient; Described computing unit also is used for according to described discharge data and described battery capacity coefficient, calculates the battery status data.
In first kind of possible implementation, described recognition unit goes out the battery specification by electronic label identification, and described battery specification comprises manufacturer, battery types, initial capacity, the arbitrary data in the date of manufacture.
In second kind of possible implementation, described rfid device also comprises: the parameter list generation unit, be used to form a plurality of specification battery parameter preset tables, and described parameter preset table comprises the contrast relationship of discharge data and battery capacity coefficient.
In the third possible implementation, described detecting unit is also for detection of described battery status data, and when described battery status data fit preset standard, described detecting unit passes to display device with described battery status data and shows.
On the other hand, the embodiment of the invention also provides a kind of battery testing system, comprises battery and above-mentioned rfid device.
A kind of battery status detection method, rfid device and battery testing system that the embodiment of the invention provides, by identification battery specification, find the corresponding preset parameter list, according to detecting the battery discharge data, calculate corresponding battery capacity coefficient and battery status data, thereby accurate and visual grasp battery status can keep the optimum Working of battery, prolong the serviceable life of battery, realize the purpose to battery intelligent management control.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is one of battery status detection method of the embodiment of the invention;
Fig. 2 be the embodiment of the invention the battery status detection method two;
Fig. 3 is the rfid device structural representation of the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of battery status detection method, rfid device and battery testing system, has solved to have the problem that can't grasp battery status in the prior art, realizes the purpose to battery intelligent management control.
In below describing, in order to illustrate rather than in order limiting, to have proposed the detail such as particular system structure, interface, technology, understand the present invention in order to cut thoroughly.Yet, not it will be clear to one skilled in the art that in having other embodiment of these details and can realize the present invention yet.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders description of the invention.
Below in conjunction with following accompanying drawing the embodiment of the invention is described in detail.
The battery status detection method that the embodiment of the invention provides as shown in Figure 1, comprising:
S101, identification battery specification.
User Recognition battery specification by the data that comprise in the battery specification that obtains, is grasped relevant information and the battery state of living in of battery.For example: the battery specification can comprise arbitrary datas such as manufacturer, battery types, initial capacity, date of manufacture.
As a kind of possible embodiment, the loading of battery specification data is inputed to electronic tag, these information rfid devices are inner to be shared, and reaches the purpose of identification battery specification.
Optionally, when battery dispatches from the factory, by scanning barcode or manual input battery information, generate the electronic tag file on computers, computer loads the electronic tag file that generates to electronic tag by I2C or 1WIRE or RS485/232 or CAN serial ports, during battery applications, electronic tag carries out information sharing by serial ports; Load and mainly contain for the battery information of electronic tag: producer's title, battery types, battery initial capacity, date of manufacture etc.
S102, the control battery discharge.
The user controls the beginning battery detecting, transmits control signal this control signal control battery discharge, beginning testing to battery.
Optionally, can transmit control signal to battery by number of ways, for example: can utilize electromagnetic wave control signal to be directly passed to the control module of battery by wireless microwave mode, perhaps, also can transmit control signal to the CAN interface of battery by control buss such as I2C bus or spi bus, begin the discharge examination process with the CAN interface control battery that utilizes this battery.In addition, the user can also adjust the relevant parameter of control signal according to the actual needs compiling that battery status detects, for example: reach the control battery status purpose of detection time by adjusting parameters such as battery discharge start time of comprising in the control signal and battery discharge concluding time.
S103 detects the discharge data in the battery discharge procedure.
Battery begins the discharge examination process after receiving user's control signal.The user begins to discharge at battery and collects the discharge data that detects battery.
Optionally, discharge data can comprise that discharge current, discharge cut-off voltage, discharge time are with data messages such as temperature.Need to prove that the process of collecting the data message that comprises in the discharge data is not unalterable.Such as: under the short situation of the battery detecting time ratio that arranges, battery can't produce big temperature fluctuation in discharge process, and can ignore temperature to the influence of final calculation result this moment, to simplify testing process; Perhaps, increase the collection of other data messages with the accuracy of increase testing result, such as: the variation of the internal resistance of battery discharge procedure detected.
In addition, detect a plurality of test ports that discharge data can be utilized the polytype measuring instrument, for example: the discharge current value when utilizing reometer to detect battery discharge; Utilize time counter to detect the time that battery discharge begins and finish to obtain battery discharge; Utilize sensing gauge to detect temperature variation in the battery discharge procedure etc.
S104 according to discharge data and a plurality of specification battery parameter preset table, obtains the battery capacity coefficient.
The user detects discharge data according to identification battery specification and collection after obtaining the battery discharge data, contrast corresponding parameter preset table and table look-up and obtain corresponding battery capacity coefficient.The user should use the parameter preset table corresponding with battery types at different battery types.
S105 according to discharge data and battery capacity coefficient, calculates the battery status data.
The user calculates the battery status data according to discharge data and battery capacity coefficient after obtaining the battery capacity coefficient.
Optionally, the battery status data can comprise data messages such as battery actual capacity and battery health degree index.For example: the battery actual capacity be used for to be weighed the electric weight of battery actual storage, and its calculating can utilize formula to finish: the discharge current * battery of battery actual discharge electric weight=battery the discharge time=battery actual capacity * battery capacity coefficient; In addition, (battery health degree index is 1 o'clock to battery health degree index, and the expression battery is 100% health, and this moment, battery was in the ideal operation state, does not have the loss situation during battery discharge charging for the health degree of weighing battery.), its calculating can utilize formula to finish: battery health degree index=battery actual capacity/battery rated capacity.Say that for another example for example can also comprise battery dump energy situation (abbreviation SOC) in the battery status data, the battery dump energy situation is used for weighing the number percent that battery dump energy accounts for the battery actual capacity.Wherein, battery SOC=(battery actual capacity-battery actual discharge electric weight)/battery actual capacity.
Detect with certain specification lead-acid accumulator that certain website is used below and be example, help those skilled in the art by detailed description that the battery status detection method of this lead-acid accumulator is carried out and explanation and understand the present invention.In this specific embodiment, this lead-acid accumulator to be measured has been carried out twice battery detecting work.Therefore present embodiment comprises:
1, battery detecting work for the first time;
Concrete, battery detecting work for the first time can be described as: at first control this lead-acid battery discharge;
At first, by recognition unit (electronic tag) identification battery specification be: GFM-26xx, then, detect the discharge data in this lead-acid battery discharge process; Wherein, the rated capacity of identifying this lead-acid battery is 26Ah, in first time battery detecting process, comprise discharge current, discharge cut-off voltage and discharge time in the discharge data, it is 5A that detection obtains discharge current, and discharge cut-off voltage is 46.8V, and be 2.8h discharge time.
Then, according to the parameter preset table of discharge data and this specification, obtain this specification battery capacity coefficient; Wherein, the parameter preset table can be with reference to table 1, and table 1 has provided the parameter preset table that a kind of specification is the GFM-26xx battery, has comprised in this parameter preset table that battery discharge C leads, the corresponding relation between discharge cut-off voltage and the battery capacity coefficient.
Need to prove that battery discharge C leads and depends on battery discharge current, is a kind of measuring for expression battery discharge speed.Wherein, battery discharge C leads with discharge current and satisfies formula: battery discharge C leads=discharge current/(battery rated capacity * battery health degree index).Battery health degree index is assumed to 1 during battery detecting work for the first time, and therefore obtaining for the first time, battery discharge C leads=5A/26Ah=0.19C.Then according to the first time battery discharge C lead and discharge cut-off voltage 46.8V during battery detecting for the first time the battery capacity coefficient η when obtaining battery detecting for the first time by table 1
1What need to replenish a bit is, is subject to table 1 value precision, and the battery capacity coefficient possibly can't directly be found, and can utilize table 1 estimation at this.For example: utilize method of interpolation estimating battery capacity coefficient η
1, concrete, can to obtain discharge cut-off voltage be 46.8V by tabling look-up 1, it is that the battery capacity coefficient η of 0.15C correspondence is 0.71 that battery discharge C leads; Discharge cut-off voltage is 46.8V, and it is that the corresponding battery capacity coefficient of 0.20C η is 0.66 that battery discharge C leads.η so
1=(0.20-0.19)/(0.20-0.15) * (0.71-0.66)+0.66 ≈ 0.67.It will be understood by those skilled in the art that, preset table and be not limited in the mode of describing in this specific embodiment based on the default mode that estimates the battery capacity coefficient of showing to table look-up, in fact, the approach that obtains the battery capacity coefficient by default table has multiple possibility, does not do at this and gives unnecessary details.
Table 1
Then, according to discharge data and battery capacity coefficient, calculate the battery status data; Wherein, in first time battery detecting process, the battery status data comprise battery actual capacity, battery SOC and battery health degree index.
Concrete, battery actual capacity=(battery discharge current * discharge time) ÷ battery capacity coefficient calculates the battery actual capacity C of battery detecting for the first time
1The ÷ η of '=(5A * 2.8h)
1=20.89Ah;
The SOC=(battery actual capacity of battery-battery actual discharge electric weight)/and the battery actual capacity, calculate the SOC of battery detecting for the first time
1=(the ÷ 20.89Ah=33% of 20.89Ah-5A * 2.8h);
Battery health degree index=battery actual capacity/battery theoretical capacity calculates the battery health degree index of battery detecting for the first time
So far, the battery detecting process first time for the treatment of the sounding lead acid accumulator finishes, and has finally obtained the battery status data of lead-acid accumulator, and these battery status data have reflected that namely lead-acid accumulator detects battery status situation constantly for the first time.
2, battery detecting work for the second time;
Concrete, battery detecting work for the second time can be described as: at first control this lead-acid battery discharge; Optionally, suppose that battery detecting work for the second time is arranged on 4 months of battery detecting work for the first time after.
Then, detect discharge data in this lead-acid battery discharge process; Wherein, the rated capacity that identification obtains this lead-acid battery is 26Ah, in second time battery detecting process, comprise discharge current, discharge cut-off voltage and discharge time in the discharge data, it is 6A that detection obtains discharge current, and discharge cut-off voltage is 46.4V, and be 2.2h discharge time.
Then, according to discharge data and parameter preset table, obtain the battery capacity coefficient; Wherein, this moment is still with reference to table 1, and table 1 has provided that a kind of battery discharge C leads, the corresponding relation between discharge cut-off voltage and the battery capacity coefficient.
The battery health degree that calculates during substitution battery detecting work for the first time
Obtain
Then according to the second time battery discharge C lead and discharge cut-off voltage 46.4V during battery detecting for the second time the battery capacity coefficient η when obtaining battery detecting for the second time by table 1
2Wherein, the mode of the battery capacity coefficient when obtaining battery detecting for the second time can obtain η with reference to the acquisition mode of the first time in this specific embodiment of battery capacity coefficient during battery detecting
1≈ 0.682.
Then, according to discharge data and battery capacity coefficient, calculate the battery status data; Wherein, in second time battery detecting process, the battery status data comprise battery actual capacity, battery SOC and battery health degree index.
Concrete, calculating can obtain the battery actual capacity C of battery detecting for the second time
2The ÷ η of '=(6A * 2.2h)
2=19.35Ah;
Calculate the SOC of battery detecting for the second time
2=(the ÷ 19.35Ah=31.8% of 19.35Ah-6A * 2.2h);
Calculate the battery health degree index of battery detecting for the second time
So far, the battery detecting process second time for the treatment of the sounding lead acid accumulator finishes, and has finally obtained the battery status data of lead-acid accumulator, and these battery status data have namely reflected the battery status of lead-acid accumulator when detecting for the second time.
Further analysis can be found, the battery actual capacity when the battery actual capacity of lead-acid accumulator to be measured is than battery detecting for the first time during battery detecting for the second time descends to some extent, battery health degree index (80.4%-74.4%)=6% that also descended.Illustrate that during this period of time lead-acid accumulator has produced consume; If predict that with this kind consume situation the health degree index of this lead-acid accumulator will be near 50% after 16 months, the user need maintain to prolong the serviceable life of accumulator or change accumulator lead-acid accumulator.
Further, as shown in Figure 2, the method for the embodiment of the invention can also comprise before step S101 control battery discharge:
S100 forms a plurality of specification battery parameter preset tables, and the parameter preset table comprises the contrast relationship of discharge data and battery capacity coefficient.
Optionally, after having identified the battery specification, discharge data and battery capacity coefficient are one-to-one relationship in the parameter preset table of getting, and the parameter preset table is used for finding out corresponding battery capacity coefficient according to discharge data.Therefore the degree of accuracy of the parameter preset table that forms directly can exert an influence to the battery status data that finally calculate.The mode that forms the parameter preset table has number of ways, can draw by the test of many times to battery of the same type such as the parameter preset table; Perhaps utilize simulation softward to be drawn by the derivation of equation, its test or derivation of equation process this paper do not do at this and give unnecessary details.
Further, as shown in Figure 2, the method for the embodiment of the invention can also comprise:
S106 detects the battery status data, when battery status data fit preset standard, shows the battery status data.
Concrete, it will be understood by those skilled in the art that the data message to comprise battery actual capacity and battery health degree index in the battery status data is example, the battery actual capacity should be less than the rated capacity of electric capacity; And along with the use of battery, battery health degree index should reduce gradually by 1; Definable goes out the standard that the battery status data should meet accordingly.If during the battery standard that the battery status data fit of calculating gained is preset, then these data can be shown; If when the battery status data of calculating gained do not meet default battery standard, prove in the testing process then to have problems that the user need carry out continuing battery detecting work again after the error eliminating work.
A kind of battery status detection method that the embodiment of the invention provides, by identification battery specification, find the corresponding preset parameter list, according to detecting the battery discharge data, calculate corresponding battery capacity coefficient and battery status data, thereby accurate and visual grasp battery status can keep the optimum Working of battery, prolong the serviceable life of battery, realize the purpose to battery intelligent management control.
The embodiment of the invention also provides a kind of rfid device 1, as shown in Figure 3, comprising:
Detecting unit 12 is for detection of the discharge data in battery 2 discharge processes;
In addition, computing unit 13 also is used for according to discharge data and battery 2 capacity coefficients, calculates battery 2 status datas.
Optionally, recognition unit 10 goes out the battery specification by electronic label identification, and described battery specification comprises manufacturer, battery types, initial capacity, the arbitrary data in the date of manufacture.
Further, as shown in Figure 3, rfid device 1 also comprises: parameter list generation unit 14, be used to form a plurality of specification battery parameter preset tables, and the parameter preset table comprises the contrast relationship of discharge data and battery capacity coefficient.
Further, as shown in Figure 3, the detecting unit 12 of rfid device 1 is also for detection of the battery status data, and when battery status data fit preset standard, detecting unit 13 passes to display device 3 with the battery status data and shows.
The those skilled in the art can be well understood to, be the convenience described and succinct, in the present embodiment each functional module having been carried out division illustrates, in the practical application, can as required above-mentioned functions be distributed and be finished by different functional modules, the inner structure that is about to device is repartitioned into different functional modules, to finish all or part of function described above.In addition, each embodiment in this instructions all adopts the mode of going forward one by one to describe, identical similar part is mutually referring to getting final product between each embodiment, especially, for this device embodiment, because it is substantially similar in appearance to method embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of method embodiment, does not repeat them here.
A kind of rfid device that the embodiment of the invention provides, by identification battery specification, find the corresponding preset parameter list, according to detecting the battery discharge data, calculate corresponding battery capacity coefficient and battery status data, thereby accurate and visual grasp battery status can keep the optimum Working of battery, prolong the serviceable life of battery, realize the purpose to battery intelligent management control.
The embodiment of the invention also provides a kind of battery testing system, comprises the rfid device that battery and above-described embodiment are mentioned.Wherein the structure of rfid device and purposes can not repeat them here with reference to above-described embodiment.In addition, the structure of other parts of battery testing system can be not described in detail this this paper with reference to prior art.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a battery status detection method is characterized in that, comprising:
Identification battery specification;
The control battery discharge;
Detect the discharge data in the battery discharge procedure;
According to described discharge data and a plurality of specification battery parameter preset table, obtain the battery capacity coefficient;
According to described discharge data and described battery capacity coefficient, calculate the battery status data.
2. method according to claim 1 is characterized in that, before described control battery discharge, also comprises:
Form a plurality of specification battery parameter preset tables, described parameter preset table comprises the contrast relationship of discharge data and battery capacity coefficient.
3. method according to claim 1 is characterized in that, described method also comprises:
Detect described battery status data, when described battery status data fit preset standard, show described battery status data.
4. according to the described method of claim 1 to 3, it is characterized in that described discharge data comprises the arbitrary data in discharge current, discharge cut-off voltage, discharge time and the temperature.
5. according to the described method of claim 1 to 3, it is characterized in that described battery status data comprise battery actual capacity and battery health degree index.
6. a rfid device is characterized in that, comprising:
Recognition unit is used for identification battery specification;
Control module is used for the control battery discharge;
Detecting unit is for detection of the discharge data in the battery discharge procedure;
Computing unit is used for according to described discharge data and a plurality of specification battery parameter preset table, obtains the battery capacity coefficient; Described computing unit also is used for according to described discharge data and described battery capacity coefficient, calculates the battery status data.
7. rfid device according to claim 6 is characterized in that, described recognition unit goes out the battery specification by electronic label identification, and described battery specification comprises manufacturer, battery types, initial capacity, the arbitrary data in the date of manufacture.
8. rfid device according to claim 6 is characterized in that, also comprises: the parameter list generation unit, be used to form a plurality of specification battery parameter preset tables, and described parameter preset table comprises the contrast relationship of discharge data and battery capacity coefficient.
9. rfid device according to claim 6, it is characterized in that, described detecting unit is also for detection of described battery status data, and when described battery status data fit preset standard, described detecting unit passes to display device with described battery status data and shows.
10. a battery testing system is characterized in that, comprises each described rfid device of battery and claim 6 to 9.
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