CN102751704A - Voltage detecting type rechargeable battery protector - Google Patents
Voltage detecting type rechargeable battery protector Download PDFInfo
- Publication number
- CN102751704A CN102751704A CN2011100971149A CN201110097114A CN102751704A CN 102751704 A CN102751704 A CN 102751704A CN 2011100971149 A CN2011100971149 A CN 2011100971149A CN 201110097114 A CN201110097114 A CN 201110097114A CN 102751704 A CN102751704 A CN 102751704A
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- Prior art keywords
- rechargeable battery
- voltage
- chip microcomputer
- discharge
- effect transistor
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- 230000001012 protector Effects 0.000 title abstract 3
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 13
- 230000001276 controlling effect Effects 0.000 claims description 38
- 230000000694 effects Effects 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 9
- 230000005669 field effect Effects 0.000 abstract 4
- 230000005611 electricity Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 7
- 238000012163 sequencing technique Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a voltage detecting type rechargeable battery protector which comprises a rechargeable battery pack, a charge end, a discharge end, a singlechip, a detecting resistor, a current detecting amplifier, an LED (Light Emitting Diode) indicator lamp, a charge control field effect transistor, a discharge control field effect transistor and a voltage stabilizing chip. The rechargeable battery pack converts the voltage of the rechargeable battery into direct voltage through the voltage stabilizing chip and supplies the direct voltage to the singlechip and the current detecting amplifier for working; the current detecting amplifier detects the voltages at the two ends of the detecting resistor and transmits the voltage signals to the singlechip; the singlechip controls the display of the LED indicator lamp; the singlechip controls the connection and disconnection of the charge end and an anode of the rechargeable battery pack by controlling the opening and closing of the charge control field effect transistor; and the singlechip controls the connection and disconnection of the discharge end and the anode of the rechargeable battery pack by controlling the opening and closing of the discharge control field effect transistor. The voltage detecting type rechargeable battery protector is multifunctional and has the advantages of programmable design, simple structure and low electricity consumption.
Description
Technical field
The present invention relates to a kind of detecting voltage type secondary battery protective device.
Background technology
Along with being widely used of products such as digital product such as mobile phone, notebook computer, electric bicycle; Rechargeable battery also is used widely in this series products; Advantages such as rechargeable battery has economy, environmental protection, electric weight foot, it is high-power to be fit to, long-time use; But existing improper use meeting causes damage to battery itself in its use, overcharging or putting excessively such as what cause during rechargeable battery is used, and electric current is excessive or temperature is high excessively; The capital causes damage to rechargeable battery, influences its useful life.
The circuit arrangement of at present rechargeable battery being protected has a lot, but its overall structure and function have much room for improvement.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides a kind of detecting voltage type secondary battery protective device, this secondary battery protective device not only overcharges, low pressure, overcurrent protection, and can assess battery electric quantity, and is simultaneously low from power consumption.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of detecting voltage type secondary battery protective device; It comprises rechargeable battery set, charging end, discharge end, charging controlling filed effect transistor, discharge controlling filed effect transistor, single-chip microcomputer, LED light, voltage stabilizing chip, detecting resistance and current sense amplifier; Said single-chip microcomputer and said rechargeable battery set, said current sense amplifier, said LED light, said charging controlling filed effect transistor, said discharge controlling filed effect transistor and said voltage stabilizing chip electrically connect, and said detecting resistance string is connected between said rechargeable battery set and the said ground wire; Said rechargeable battery set converts said charged battery voltage into direct voltage through said voltage stabilizing chip and offers said single-chip microcomputer, LED light and current sense amplifier; Said current sense amplifier is detected the voltage at said detecting resistance two ends and is messaging in said single-chip microcomputer; Establish A/D converter in the said single-chip microcomputer, and the voltage analog signal of its reception converted into convert current data into through calculating after the digital signal and store in the relevant register; The demonstration of the said LED light of said Single-chip Controlling; Said single-chip microcomputer is through controlling opening and said charging end of closing control and anodal being connected and disconnection of said rechargeable battery set of said charging control FET, and said single-chip microcomputer is through controlling opening and said discharge end of closing control and anodal being connected and disconnection of said rechargeable battery set of said discharge control FET.
As further improvement of the present invention, be provided with ten A/D converters in the said single-chip microcomputer, and test said rechargeable battery set voltage through said detecting resistance, said single-chip microcomputer shows rechargeable battery set voltage again through said LED light.
As further improvement of the present invention, said single-chip microcomputer obtains battery capacity according to rechargeable battery set voltage and charging and discharging currents, and the rechargeable battery capacity is analyzed acquisition capacity-voltage-to-current contrast relationship table.
As further improvement of the present invention, during the charging of said rechargeable battery set, when the voltage that detects said rechargeable battery set when said single-chip microcomputer was higher than overshoot protection point, the said charging controlling filed of said Single-chip Controlling effect transistor was closed.
As further improvement of the present invention, during the discharge of said discharge battery group, when the voltage that detects said discharge battery group when said single-chip microcomputer was lower than overshoot protection point, the said discharge controlling filed of said Single-chip Controlling effect transistor was closed.
As further improvement of the present invention, when the discharge of said rechargeable battery set, the discharging current that said single-chip microcomputer detects said rechargeable battery set is during greater than over-current protection point, and the said discharge controlling filed of said Single-chip Controlling effect transistor is closed.
As further improvement of the present invention, said LED light comprises working station indicator, charging indicator light and discharge indicator light.
The invention has the beneficial effects as follows: have the indication of discharging and recharging, overcharge, low pressure, overcurrent, short-circuit protection, and function such as electric quantity metering, design simultaneously is light and handy, and sequencing control is simple to operate, and is low from power consumption.
Description of drawings
Fig. 1 is a principle of the invention sketch map.
In conjunction with accompanying drawing, explanation below doing:
1---rechargeable battery set 2---charging end
3---discharge end 6---single-chip microcomputer
4---charging controlling filed effect transistor
5---discharge controlling filed effect transistor
7---LED light 8---voltage stabilizing chip
9---current sense amplifier Rs---detect resistance
10---ground wire 71---working station indicator
72---charging indicator lights 73---discharge indicator light
Embodiment
With reference to Fig. 1 the present invention is elaborated below.
A kind of detecting voltage type secondary battery protective device; Comprise rechargeable battery set 1, charging end 2, discharge end 3, charging controlling filed effect transistor 4, discharge controlling filed effect transistor 5, single-chip microcomputer 6, LED light 7, voltage stabilizing chip 8, detecting resistance R s and current sense amplifier 9; Single-chip microcomputer and rechargeable battery set, current sense amplifier, LED light, charging controlling filed effect transistor, discharge controlling filed effect transistor and voltage stabilizing chip electrically connect, and the detecting resistance string is connected between rechargeable battery set and the ground wire 10; Rechargeable battery set converts charged battery voltage into direct voltage through the voltage stabilizing chip and offers single-chip microcomputer, LED light and current sense amplifier work use; The operating voltage of general single-chip microcomputer is 5V, and promptly the voltage of rechargeable battery set supplies single-chip microcomputer to use convert the direct current of 5V into through the voltage stabilizing chip after; The voltage at current sense amplifier detecting detecting resistance two ends also is messaging in single-chip microcomputer, establishes A/D converter in the single-chip microcomputer, and the voltage analog signal of its reception converted into converts current data into through calculating after the digital signal and store in the relevant register; The demonstration of Single-chip Controlling LED light; Single-chip microcomputer is opened and closing control charging end and anodal being connected and disconnection of rechargeable battery set through control charging control FET, and single-chip microcomputer is opened and closing control discharge end and anodal being connected and disconnection of rechargeable battery set through control discharge control FET.
Be provided with ten A/D converters in the single-chip microcomputer, and test rechargeable battery set voltage through detecting resistance, single-chip microcomputer shows rechargeable battery set voltage again through LED light.
Single-chip microcomputer obtains battery capacity according to rechargeable battery set voltage and charging and discharging currents, and the rechargeable battery capacity is analyzed acquisition capacity-voltage-to-current contrast relationship table.In rechargeable battery set when charging,, when the voltage that detects rechargeable battery set when single-chip microcomputer was higher than overshoot protection point, the Single-chip Controlling controlling filed effect transistor that charges was closed.
In discharge battery group when discharge,, when the voltage that detects the discharge battery group when single-chip microcomputer was lower than overshoot protection point, the Single-chip Controlling controlling filed effect transistor that discharges was closed.
In rechargeable battery set when discharge,, the discharging current that detects rechargeable battery set when single-chip microcomputer is during greater than over-current protection point, and single-chip microcomputer controls discharge controlling filed effect transistor equally and cuts out.
LED light comprises working station indicator 71, charging indicator light 72 and discharge indicator light 73.LED light is shown according to data such as the charging and discharging state of the rechargeable battery set that detects, battery capacities by single-chip microcomputer.During the rechargeable battery set charging, the charging indicator light LED C1-4 cycle lighting of charging indicator light 72, blanking time, 2S had 5 recurrent states, and the LED D1-4 of discharge indicator light 73 goes out; During the rechargeable battery set discharge, the LED C1-4 of charging indicator light 72 goes out, and the LED D1-4 of discharge indicator light 73 drives its on and off according to cell load change in voltage scope; When leaving standstill, the LED C1-4 of charging indicator light 72 goes out, and the LED D1-4 of discharge indicator light 73 goes out.As shown in table 1.
Table 1
Among the present invention, as shown in Figure 1, there are five cycle of states in the LED C1-4 of charging indicator light 72, and be respectively: 1.LED C1-4 goes out; 2.LED C1 is bright; 3.LEDC1-2 it is bright; 4.LED C1-3 is bright; 5.LED C1-4 is bright.After battery is full of, LED C1-4 Chang Liang, behind the disconnection charger, LED C1-4 goes out.
Among the present invention, as shown in Figure 1, the residual capacity of the LED D1-4 indication rechargeable battery set of discharge indicator light 73, the residual capacity of rechargeable battery set are according to cell voltage, charging and discharging currents contrast assessment, and table 2 is discharge indicator light 73 show state tables.
Table 2
The main electrical parameter of secondary battery protective device of the present invention is as shown in table 3.
| Sequence number | Project | Specification |
| 1 | System voltage | 15～40V |
| 2 | Dynamically power consumption is flowed | 5～10mA |
| 3 | The static state electric current | Less than 500uA |
Table 3
Secondary battery protective device of the present invention; Can carry out functions such as over-charge protective, overcurrent protection, low-voltage variation, capacity detecting, short-circuit protection simultaneously to rechargeable battery; Show that through the operating state of LED light function is many simultaneously, the sequencing design with rechargeable battery; Simple in structure, low from power consumption.
The invention is not restricted to the foregoing description, many variation designs can also be arranged, can carry out various combination, replacement etc. on demand, the technical scheme that equal replacement of all employings or equivalent transformation form all drops on the protection range of this patent claim.
Claims (7)
1. detecting voltage type secondary battery protective device; It is characterized in that: it comprises rechargeable battery set (1), charging end (2), discharge end (3), charging controlling filed effect transistor (4), discharge controlling filed effect transistor (5), single-chip microcomputer (6), LED light (7), voltage stabilizing chip (8), detecting resistance (Rs) and current sense amplifier (9); Said single-chip microcomputer and said rechargeable battery set, said current sense amplifier, said LED light, said charging controlling filed effect transistor, said discharge controlling filed effect transistor and said voltage stabilizing chip electrically connect, and said detecting resistance string is connected between said rechargeable battery set and the said ground wire (10); Said rechargeable battery set converts said charged battery voltage into direct voltage through said voltage stabilizing chip and offers said single-chip microcomputer, LED light and current sense amplifier; Said current sense amplifier is detected the voltage at said detecting resistance two ends and is messaging in said single-chip microcomputer; Establish A/D converter in the said single-chip microcomputer, and the voltage analog signal of its reception converted into convert current data into through calculating after the digital signal and store in the relevant register; The demonstration of the said LED light of said Single-chip Controlling; Said single-chip microcomputer is through controlling opening and said charging end of closing control and anodal being connected and disconnection of said rechargeable battery set of said charging control FET, and said single-chip microcomputer is through controlling opening and said discharge end of closing control and anodal being connected and disconnection of said rechargeable battery set of said discharge control FET.
2. detecting voltage type secondary battery protective device according to claim 1; It is characterized in that: be provided with ten A/D converters in the said single-chip microcomputer; And test said rechargeable battery set voltage through said detecting resistance, said single-chip microcomputer shows rechargeable battery set voltage again through said LED light.
3. detecting voltage type secondary battery protective device according to claim 2; It is characterized in that: said single-chip microcomputer obtains battery capacity according to rechargeable battery set voltage and charging and discharging currents, and the rechargeable battery capacity is analyzed acquisition capacity-voltage-to-current contrast relationship table.
4. detecting voltage type secondary battery protective device according to claim 1; It is characterized in that: when said rechargeable battery set is charged; When the voltage that detects said rechargeable battery set when said single-chip microcomputer was higher than overshoot protection point, the said charging controlling filed of said Single-chip Controlling effect transistor was closed.
5. detecting voltage type secondary battery protective device according to claim 1; It is characterized in that: when said discharge battery group is discharged; When the voltage that detects said discharge battery group when said single-chip microcomputer was lower than overshoot protection point, the said discharge controlling filed of said Single-chip Controlling effect transistor was closed.
6. detecting voltage type secondary battery protective device according to claim 1; It is characterized in that: when said rechargeable battery set is discharged; The discharging current that said single-chip microcomputer detects said rechargeable battery set is during greater than over-current protection point, and the said discharge controlling filed of said Single-chip Controlling effect transistor is closed.
7. according to each described detecting voltage type secondary battery protective device in the claim 1 to 6, it is characterized in that: said LED light comprises working station indicator (71), charging indicator light (72) and discharge indicator light (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100971149A CN102751704A (en) | 2011-04-19 | 2011-04-19 | Voltage detecting type rechargeable battery protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100971149A CN102751704A (en) | 2011-04-19 | 2011-04-19 | Voltage detecting type rechargeable battery protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102751704A true CN102751704A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100971149A Pending CN102751704A (en) | 2011-04-19 | 2011-04-19 | Voltage detecting type rechargeable battery protector |
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| Country | Link |
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| CN (1) | CN102751704A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884997A (en) * | 2014-04-09 | 2014-06-25 | 天宇通讯科技(昆山)有限公司 | Mobile power supply charging-discharging capacity testing system |
| CN104459554A (en) * | 2014-12-02 | 2015-03-25 | 河南新太行电源有限公司 | Battery cell monitoring device for high-capacity storage battery formation |
| CN105356569A (en) * | 2015-12-01 | 2016-02-24 | 中国海洋大学 | Wave energy generator power transfer control system |
| CN112806666A (en) * | 2021-02-23 | 2021-05-18 | 上海安踏体育用品有限公司 | Luminous shoes |
-
2011
- 2011-04-19 CN CN2011100971149A patent/CN102751704A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884997A (en) * | 2014-04-09 | 2014-06-25 | 天宇通讯科技(昆山)有限公司 | Mobile power supply charging-discharging capacity testing system |
| CN104459554A (en) * | 2014-12-02 | 2015-03-25 | 河南新太行电源有限公司 | Battery cell monitoring device for high-capacity storage battery formation |
| CN105356569A (en) * | 2015-12-01 | 2016-02-24 | 中国海洋大学 | Wave energy generator power transfer control system |
| CN112806666A (en) * | 2021-02-23 | 2021-05-18 | 上海安踏体育用品有限公司 | Luminous shoes |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121024 |