CN208520977U - A kind of identification device of lithium electricity - Google Patents
A kind of identification device of lithium electricity Download PDFInfo
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- CN208520977U CN208520977U CN201821032963.XU CN201821032963U CN208520977U CN 208520977 U CN208520977 U CN 208520977U CN 201821032963 U CN201821032963 U CN 201821032963U CN 208520977 U CN208520977 U CN 208520977U
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- lithium electricity
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Abstract
A kind of identification device of lithium electricity, charger includes single-chip microcontroller and the battery voltage sampling circuit and charging circuit that are attached thereto, battery voltage sampling circuit connects with charging circuit and is electrically charged battery, in which: single-chip microcontroller is for sampling battery voltage, record charging time and judges whether charged pond is a lithium electricity and control charging process；Battery voltage sampling circuit is for sampling the voltage for being electrically charged pond.Charging circuit charges to battery for charging current to be arranged, is full of voltage.Its advantage is that a lithium electricity can be identified in time, and stop charging.It solves using the safety problem that secondary lithium electricity charger mistake charges to a lithium electricity and occurs.
Description
Technical field
The utility model relates to the instruments of the electrical conditions for testing battery, such as testing the instrument of charged state,
Espespecially a kind of identification device of a lithium electricity.
Background technique
With the improvement of living standards, people's quality of life has higher requirement, day of the various battery applications at us
In normal production and living.Lithium electricity and secondary lithium electricity battery applications are in various mobile devices, such as dollying head.It is various not
There is different chargers to charge to secondary lithium electricity with producer.But it since some people cannot identify a lithium electricity, is given with this
To a lithium electricity charging charging fire and explosion accident, threat to life and property occur for the charger of secondary lithium electricity battery charging
Safety at home and abroad has occurred and that a lot of because misusing safety accident caused by secondary lithium electricity charger charges to a lithium electricity.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of identification devices of a lithium electricity.Purport
The safety problem that secondary lithium electricity charger mistake charges to a lithium electricity and occurs is used in solution.Identify a lithium electricity in time,
And stop charging.
The technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of identification dress of a lithium electricity
It sets, it is characterised in that: described device includes charger, and charger includes single-chip microcontroller and the battery voltage sampling circuit that is attached thereto
And charging circuit, battery voltage sampling circuit connect with charging circuit and are electrically charged battery, in which:
Single-chip microcontroller is for sampling battery voltage, record charging time and judges whether charged pond is a lithium electricity and controls
Charging process；
Battery voltage sampling circuit is for sampling the voltage for being electrically charged pond.
Charging circuit charges to battery for charging current to be arranged, is full of voltage.
It is described to judge whether charged pond is that a lithium electricity is carried out according to following method and step:
One, it is charged using 4.1V ~ 4.5V voltage to lithium battery, cell voltage V0 when recording first time T0；
Two, detection cell voltage increases the time △ T1 consumed when 0.1V；
Three, as battery voltage rating V≤3.3V, think that charged battery is not chargeable one if T1≤5 minute △
Secondary lithium electricity；
Four, as battery voltage rating 3.7V < V < 4.1V, think that charged battery is not chargeable if T1 < 2 minute △
Lithium electricity.
Equally, described to judge whether charged pond is that a lithium electricity be carried out according to following method and step:
Five, it is charged using 4.1V ~ 4.5V voltage to lithium battery, cell voltage V0 when recording first time T0；
Six, charging time increment △ T1 and cell voltage increment △ V1 is detected, voltage-time slope B=△ V1/ △ is calculated
T1；
Seven, as battery voltage rating V≤3.3V, think that charged battery is not chargeable one if B≤0.2V/min
Secondary lithium electricity；
Eight, when battery voltage rating V is 3.7V < V < 4.1V, think that charged battery is not if B≤0.05V/min
A chargeable lithium electricity.
Further, described to judge whether charged pond is that a lithium electricity be examined using the following method:
It is 0.3V or more higher than voltage when stopping charging being electrically charged cell voltage, then is a lithium electricity.
The cell voltage in certain stages and the relationship in charging time judge whether it is lithium electricity: present battery when with charging
Voltage be V1 V2 V3 V4 one in V5, wherein V1≤3.0V, 3.0V < V2≤3.1V, 3.1V < V3≤3.2V, 3.2V < V4
≤ 3.3V, 3.3V < V5≤3.4V, and V1 V2 V3 V4 the charging time corresponding to V5 be T1 T2 T3 T4 T5, if T1
>=3 minutes, T2 >=6 minute, T3 >=10 minute, T4 >=20 minute, T5 >=60 minute, then it is believed that charged pond is a lithium
Electricity.
Further:
There are a temperature sensor circuit, the temperature sensor circuit connection single-chip microcontroller and battery.
There is a display circuit, the display circuit connects single-chip microcontroller, for showing whether charged state, display are primary
Lithium electricity.
There is a current sampling circuit, the current sampling circuit connects single-chip microcontroller, for sampling the electric current by battery
And charging current is monitored by single-chip microcontroller.
The beneficial effects of the utility model are: identifying a lithium electricity in time, and stop charging.
It solves using the safety problem that secondary lithium electricity charger mistake charges to a lithium electricity and occurs.
Detailed description of the invention
The utility model will be further described with reference to the accompanying drawing.
Fig. 1 is the configuration diagram of the utility model.
Fig. 2 is the charger electrical block diagram of the utility model.
Fig. 3 is charge graph.
In Fig. 1: in Fig. 1: 1 being shell, 2 be battery, 3 be charger.
Specific embodiment
Referring to attached drawing, the identification device of the utility model lithium electricity of one kind, it is characterised in that: described device includes charging
Device 3, charger 3 include single-chip microcontroller 31 and the battery voltage sampling circuit 33 and charging circuit 36 that are attached thereto, and cell voltage is adopted
Sample circuit 33 and charging circuit 36 connect battery 2, in which:
Single-chip microcontroller 31 is for sampling battery voltage, record charging time and judges whether charged pond is a lithium electricity and controls
Charging process processed；
Battery voltage sampling circuit 33 is used for the voltage of sampling battery 2.
Charging circuit 36 charges to battery for charging current to be arranged, is full of voltage.
It is described to judge whether charged pond is that a lithium electricity is carried out according to following method and step:
One, it is charged using 4.1V ~ 4.5V voltage to lithium battery, cell voltage V0 when recording first time T0；
Two, detection cell voltage increases the time △ T1 consumed when 0.1V；
Three, as battery voltage rating V≤3.7V, think that charged battery is not chargeable one if T1≤5 minute △
Otherwise secondary lithium electricity is secondary lithium electricity；
Four, as battery voltage rating 3.7V < V < 4.1V, think that charged battery is not chargeable if T1 < 2 minute △
Otherwise lithium electricity is secondary lithium electricity.
The utility model technical principle is: the lithium electricity charging in part, because of inside battery chemical structure reason, battery electricity
Pressure rises quickly, and back reaction cannot occur, electric energy cannot be stored.Remaining lithium electricity, can charge several circulations.
After charging cycle several times, energy-storage function is just lost, voltage rises very fast when charging.The same electric current of secondary lithium electricity
Charging, needs the long time, and the characteristic of the two charging has very big difference.
Referring to fig. 2, charging current 400mA.Cell voltage profiles when curve 3 is the charging of secondary lithium electricity, in 3.0V or more,
3.3V or less cell voltage rises quickly, and 3.4V or more cell voltage rises very slow.Curve 2 is the lithium electricity that can be charged several times
The cell voltage profiles of charging, battery when curve 1 is the charging of (losing energy-storage function) after a general lithium electricity has filled several times
Voltage curve.It can be seen from the figure that a lithium electricity can fill the stage, in 3.0V or more, 3.3V is hereinafter, rise very slow.3.7V
The above voltage rising has the stage to will appear than very fast situation.A lithium electricity charge characteristic for losing energy storage capacity is curve 1.Root
According to these features, a lithium electricity can be identified.
In the second embodiment of the utility model:
It is described to judge whether charged pond is that a lithium electricity is carried out according to following method and step:
Five, it is charged using 4.1V ~ 4.5V voltage to lithium battery, cell voltage V0 when recording first time T0；
Six, charging time increment △ T1 and cell voltage increment △ V1 is detected, voltage-time slope B=△ V1/ △ is calculated
T1；
Seven, as battery voltage rating V≤3.3V, think that charged battery is not chargeable one if B≤0.2V/MIN
Otherwise secondary lithium electricity is secondary lithium electricity；
Eight, as battery voltage rating 3.7V < V < 4.1V, think that charged battery is that can not fill if B≤0.05V/MIN
Otherwise an electric lithium electricity is secondary lithium electricity.
When lithium is electric chargeable, charging in 3.0V or more, 3.3V or less, voltage rises slow, slope X1=△ V/ △ T,
The rising of 3.7V or more voltage will appear very fast process, and secondary lithium electricity charges in 3.3V or less, and voltage rises fast, 3.4V or more
Voltage rises slow X2=△ V/ △ T.
It charges under certain voltage stages, the time required for the every raising 0.1V of cell voltage is to determine whether be primary
Lithium electricity.The time spent in 3.3V or less battery every raising 0.1V, is greater than a time △ T1, is judged as a lithium electricity, 3.7V with
On, less than one time △ T2 is a lithium electricity the time spent in every raising 0.1V.
Lithium electricity is when chargeable, and in 3.0V or more, 3.3V is greater than 5 minutes hereinafter, every rising 0.1V.Secondary lithium electricity
In 3.0V or more, 3.3V was hereinafter, every rising 0.1V, less than 5 minutes.One time lithium electricity (loses energy-storage function) when not chargeable,
In 3.7V or more, 4.1V is hereinafter, every rising 0.1V, it may appear that the stage less than 2 minutes.Secondary lithium electricity is in 3.5V or more, 4.1V
Hereinafter, every rising 0.1V, is greater than 2 minutes.△ T1 is 5 minutes, and △ T2 is 2 minutes.
A lithium electricity can be identified with the method for calculating slope X=, △ T chooses 5 seconds ~ 15 minutes, in 3.0V or more,
3.3V is hereinafter, slope X is less than some value, it is believed that is a lithium electricity.In 3.7V or more, 4.1V hereinafter, slope X be greater than some value,
It is considered a lithium electricity.
Lithium electricity is when chargeable, and in 3.0V or more, 3.3V is hereinafter, T=2 minute △, slope X1 are less than Y.It is less than
The slope of Y is judged as a lithium electricity.Secondary lithium electricity is in 3.0V or more, and 3.3V is hereinafter, T=2 minute △, slope X1 are greater than Y.Once
Lithium electricity (loses energy-storage function) when not chargeable, and in 3.7V or more, 4.1V is hereinafter, T=2 minute △, slope X2 are greater than Z.Occur
The case where greater than Z, is determined as a lithium electricity.Secondary lithium electricity is in 3.7V or more, and 4.1V is hereinafter, T=2 minute △, slope X2 are less than Z.
It chooses Y=0.004V/ seconds, Z=0.001V/ seconds.
In the 3rd embodiment of the utility model:
A lithium electricity is checked whether with charging time increment and cell voltage increment.After a lithium electricity has filled several times
After (losing energy-storage function), internal resistance becomes larger.Pressure difference when not charging when charging and is bigger.By test, this pressure difference exists
One voltage value V1 or more, is judged as a lithium electricity, and the method will soon judge most disposable lithium-battery.
For lithium electricity in charging, cell voltage is 0.3V or more higher than voltage when stopping charging, it is believed that is a lithium electricity.
V1 is arranged to 0.3V.
The cell voltage in certain stages and the relationship in charging time are to determine whether be a lithium electricity when with charging.From curve
It is seen on time, voltage relationship, current battery level is lower than 3.0V, and the charging time is more than time value T1, is judged as a lithium electricity.When
Preceding cell voltage is lower than 3.1V, is judged as a lithium electricity.Charging time is more than time value T2, is judged as a lithium electricity.Current electricity
Cell voltage is lower than 3.2V, and the charging time is more than time value T3, is judged as a lithium electricity.Current battery level is lower than 3.3V, charging
Time is more than time value T4, is judged as a lithium electricity.Current battery level is lower than 3.4V, and the charging time is more than time value T5, is sentenced
Break as a lithium electricity.
T1 is arranged to 3 minutes T2 and is arranged to 6 minutes, and T3 is arranged to 10 minutes, and T4 is arranged to 20 minutes, and T5 is arranged to 60 points
Clock.
In the embodiments of the present invention:
There is a temperature sensor circuit 34, the temperature sensor circuit 34 connects single-chip microcontroller 31 and battery 2.For examining
Battery temperature is surveyed, is monitored and controls charging to charging temperature by single-chip microcontroller 31.It is higher than one when temperature rises fast or temperature
Definite value, charge closing circuit guarantee safety.
Have a display circuit 35, the display circuit 35 connects single-chip microcontroller 31, for show charged state, display whether
It is a lithium electricity.
There is a current sampling circuit 32, the current sampling circuit 32 connects single-chip microcontroller 31, passes through battery for sampling
Electric current and charging current is monitored by single-chip microcontroller 31.
Claims (4)
1. a kind of identification device of a lithium electricity, it is characterised in that: described device includes charger, charger include single-chip microcontroller with
The battery voltage sampling circuit and charging circuit being attached thereto, battery voltage sampling circuit connect with charging circuit and are electrically charged electricity
Pond, in which:
Single-chip microcontroller is for sampling battery voltage, record charging time and judges whether charged pond is a lithium electricity and control charging
Process；
Battery voltage sampling circuit is used to sample the voltage for being electrically charged pond,
Charging circuit charges to battery for charging current to be arranged, is full of voltage.
2. a kind of identification device of lithium electricity according to claim 1, it is characterised in that: there is a temperature sensor electricity
Road, the temperature sensor circuit connection single-chip microcontroller and battery.
3. a kind of identification device of lithium electricity according to claim 1, it is characterised in that: have a display circuit, institute
Display circuit connection single-chip microcontroller is stated, for showing whether charged state, display are a lithium electricity.
4. a kind of identification device of lithium electricity according to claim 1, it is characterised in that: there is a current sample electricity
Road, the current sampling circuit connect single-chip microcontroller, for sample pass through the electric current of battery and pass through single-chip microcontroller to charging current into
Row monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821032963.XU CN208520977U (en) | 2018-07-02 | 2018-07-02 | A kind of identification device of lithium electricity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821032963.XU CN208520977U (en) | 2018-07-02 | 2018-07-02 | A kind of identification device of lithium electricity |
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| Publication Number | Publication Date |
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| CN208520977U true CN208520977U (en) | 2019-02-19 |
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ID=65336587
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| CN201821032963.XU Active CN208520977U (en) | 2018-07-02 | 2018-07-02 | A kind of identification device of lithium electricity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594137A (en) * | 2018-07-02 | 2018-09-28 | 深圳市瑞鼎电子有限公司 | A kind of identification device and method of lithium electricity |
-
2018
- 2018-07-02 CN CN201821032963.XU patent/CN208520977U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594137A (en) * | 2018-07-02 | 2018-09-28 | 深圳市瑞鼎电子有限公司 | A kind of identification device and method of lithium electricity |
| WO2020006846A1 (en) * | 2018-07-02 | 2020-01-09 | 深圳市瑞鼎电子有限公司 | Primary lithium battery identification device and method |
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