CN206226063U - A kind of lithium cell charging cell equalizing protecting circuit - Google Patents
A kind of lithium cell charging cell equalizing protecting circuit Download PDFInfo
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- CN206226063U CN206226063U CN201621221113.5U CN201621221113U CN206226063U CN 206226063 U CN206226063 U CN 206226063U CN 201621221113 U CN201621221113 U CN 201621221113U CN 206226063 U CN206226063 U CN 206226063U
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- Prior art keywords
- lithium battery
- single lithium
- voltage
- triode
- protecting circuit
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Abstract
The utility model discloses a kind of lithium cell charging cell equalizing protecting circuit; some single lithium battery battery packs in series; and save a cell equalizing protecting circuit in parallel in single lithium battery every; the cell equalizing protecting circuit includes triode, the potentiometer for providing reference voltage, the source of stable pressure for adjusting single lithium battery limitation voltage and plays the power resistor of metering function; the triode is PNP triode; the source of stable pressure and power resistor connection and it is connected with triode simultaneously, the potentiometer is connected with source of stable pressure.The utility model ensures the single lithium battery equalizaing charge of series connection so that single lithium battery can be with automatic shutdown circuit when reaching full voltage.
Description
Technical field
The utility model is related to electrokinetic cell, and in particular to lithium cell charging cell equalizing protecting circuit.
Background technology
Lithium battery has been widely used in electronic product and power-equipment now, and its charging technique is also very crucial
Technology, because single lithium battery voltage is smaller, is typically operated, due to itself manufacturing process by the way of being connected in series
And the lack of uniformity that the factor of use environment is brought so that Charge Management faces certain difficulty.If it is not charged carrying out
Weighing apparatus protection, then can largely effect on its service life, and bring certain potential safety hazard.
In the prior art, Charge Management is most of using passive method in a balanced way, by parallel resistance to the monomer lithium that overcharges
Battery is discharged, so less efficient, and energy loss is big.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of lithium cell charging cell equalizing protecting circuit, it is ensured that string
Connection lithium battery equalizaing charge so that automatic shutdown circuit when single lithium battery reaches full voltage.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：A kind of lithium cell charging balance protection
Circuit, some single lithium battery battery packs in series, and a cell equalizing protecting circuit in parallel, institute in every section single lithium battery
Cell equalizing protecting circuit is stated including triode, the potentiometer for providing reference voltage, for adjusting single lithium battery limitation voltage
Source of stable pressure and play the power resistor of metering function, the triode is PNP triode, and the source of stable pressure and power resistor connect
Connect and be connected with triode simultaneously, the potentiometer is connected with source of stable pressure；The cell equalizing protecting circuit sets for single lithium battery
Limitation voltage, if the voltage of single lithium battery is less than limitation voltage, source of stable pressure does not absorb electric current, triode cut-off, charging electricity
Stream continues to be charged to the single lithium battery by single lithium battery；If single lithium battery voltage reaches limitation voltage, source of stable pressure is opened
Begin absorption electric current, triode ON, then by triode, not by the single lithium battery, the single lithium battery stops filling electric current
Electricity, makes the single lithium battery voltage be limited in below limitation voltage.
Preferably, the cell equalizing protecting circuit is also connected including one with triode, plays the diode of partial pressure effect.
The technical solution adopted in the utility model, a cell equalizing protecting circuit in parallel in every section single lithium battery, if single
The voltage of body lithium battery does not absorb electric current less than limitation voltage, then source of stable pressure, and triode cut-off, charging current is electric by monomer lithium
Continue to be charged to the single lithium battery in pond；If single lithium battery voltage reaches limitation voltage, source of stable pressure starts to absorb electric current, three poles
Pipe is turned on, then by triode, not by the single lithium battery, the single lithium battery stops charging electric current, makes monomer lithium electricity
Cell voltage is limited in below limitation voltage.Therefore, the utility model ensures the single lithium battery equalizaing charge of series connection so that monomer
Lithium battery can be with automatic shutdown circuit when reaching full voltage.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the utility model cell equalizing protecting circuit theory diagram；
Fig. 2 is the utility model cell equalizing protecting circuit schematic diagram；
Fig. 3 is the utility model cell equalizing protecting circuit parallel circuit fundamental diagram；
Fig. 4 charges normal operating diagram for the utility model cell equalizing protecting circuit；
Fig. 5 is the utility model cell equalizing protecting circuit upscale protection operating diagram；
Specific embodiment
As shown in figure 1, some single lithium battery battery packs in series, in every section monomer lithium by the way of being connected in parallel
A cell equalizing protecting circuit all in parallel on battery.
Such as Fig. 2, potentiometer, controllable accurate source of stable pressure TL431,1K power resistor, PNP of the cell equalizing protecting circuit including 100K
Triode MJ11015, diode 10A01.Wherein, potentiometer is used to provide reference voltage, and source of stable pressure is used to adjust monomer lithium electricity
Pond limits voltage, and power resistor plays metering function, and diode plays partial pressure.Triode is PNP triode, source of stable pressure and power
Resistance is connected and is connected with triode simultaneously, and potentiometer is connected with source of stable pressure.
As shown in figure 3, illustrating its operation principle with single cell equalizing protecting circuit, cell equalizing protecting circuit sets for single lithium battery
Definite limitation voltage is 4.2V, and controllable accurate source of stable pressure TL431 does not absorb electric current, the poles of PNP tri- if cell voltage is below 4.2V
Pipe MJ11015 ends, and charging current can continue to charge the battery by battery；If cell voltage reaches 4.2V, controllable accurate is steady
Potential source TL431 starts to absorb electric current, and PNP triode MJ11015 is turned on, then electric current passes through triode MJ11015 and diode
10A01, not by battery, stops charging, and cell voltage is limited in below 4.2V, and diode 10A01 plays partial pressure, reduces
PNP triode MJ11015 dissipated powers.
As shown in figure 4, for the utility model cell equalizing protecting circuit charges normal operating diagram, each source of stable pressure is adjusted
To 4.2V.Its in a balanced way principle be, when it is every section single lithium battery voltage be both less than 4.2V when, cell equalizing protecting circuit does not work,
Charging current all passes through from single lithium battery, and all single lithium batteries continue to charge.
As shown in figure 5, be the utility model cell equalizing protecting circuit upscale protection operating diagram, if wherein one monomer
Lithium battery is first full of (taking the lead in reaching 4.2V), then its corresponding cell equalizing protecting circuit in parallel begins to conducting, plays shunting action,
Voltage is stablized can always in 4.2V, single lithium battery of the charging current no longer by being currently full of.
Claims (2)
1. a kind of lithium cell charging cell equalizing protecting circuit, some single lithium battery battery packs in series, and in every section monomer lithium
A cell equalizing protecting circuit in parallel on battery, it is characterised in that：The cell equalizing protecting circuit is including triode, for providing benchmark
The power resistor of the potentiometer of voltage, the source of stable pressure for adjusting single lithium battery limitation voltage and a metering function, it is described
Triode is PNP triode, the source of stable pressure and power resistor connection and is connected with triode simultaneously, the potentiometer and voltage stabilizing
Source connects；The cell equalizing protecting circuit is single lithium battery setting limitation voltage, if the voltage of single lithium battery is less than limitation electricity
Press, then source of stable pressure does not absorb electric current, triode cut-off, charging current continues to be filled to the single lithium battery by single lithium battery
Electricity；If single lithium battery voltage reaches limitation voltage, source of stable pressure starts to absorb electric current, triode ON, then electric current passes through three poles
Pipe, not by the single lithium battery, the single lithium battery stop charge, make the single lithium battery voltage be limited in limitation voltage with
Under.
2. a kind of lithium cell charging cell equalizing protecting circuit according to claim 1, it is characterised in that：The balance protection electricity
Road is also connected including one with triode, plays the diode of partial pressure effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621221113.5U CN206226063U (en) | 2016-11-14 | 2016-11-14 | A kind of lithium cell charging cell equalizing protecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621221113.5U CN206226063U (en) | 2016-11-14 | 2016-11-14 | A kind of lithium cell charging cell equalizing protecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226063U true CN206226063U (en) | 2017-06-06 |
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ID=58793389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621221113.5U Active CN206226063U (en) | 2016-11-14 | 2016-11-14 | A kind of lithium cell charging cell equalizing protecting circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206226063U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231024A (en) * | 2017-06-27 | 2017-10-03 | 广西科技大学 | The general charging method of button cell and charger |
| CN107910951A (en) * | 2017-12-26 | 2018-04-13 | 周伟中 | A kind of automobile starting storage battery |
| CN111781506A (en) * | 2020-05-26 | 2020-10-16 | 上海空间电源研究所 | High-precision adjustable lithium battery cell voltage control circuit |
-
2016
- 2016-11-14 CN CN201621221113.5U patent/CN206226063U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231024A (en) * | 2017-06-27 | 2017-10-03 | 广西科技大学 | The general charging method of button cell and charger |
| CN107231024B (en) * | 2017-06-27 | 2023-06-23 | 广西科技大学 | General charging method and charger for button cell |
| CN107910951A (en) * | 2017-12-26 | 2018-04-13 | 周伟中 | A kind of automobile starting storage battery |
| CN111781506A (en) * | 2020-05-26 | 2020-10-16 | 上海空间电源研究所 | High-precision adjustable lithium battery cell voltage control circuit |
| CN111781506B (en) * | 2020-05-26 | 2023-02-03 | 上海空间电源研究所 | High-precision adjustable lithium battery cell voltage control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230731 Address after: 311215 No.33, hongken Road, hongken farm, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Tianyi Industrial Co.,Ltd. Address before: A-102-561, No. 198 Qidi Road, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province, 311232 Patentee before: HANGZHOU JINQIU AUTOMOBILE ENERGY STORAGE TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |