CN103390883B - A kind of charging protective circuit of lithium cell - Google Patents
A kind of charging protective circuit of lithium cell Download PDFInfo
- Publication number
- CN103390883B CN103390883B CN201310263083.9A CN201310263083A CN103390883B CN 103390883 B CN103390883 B CN 103390883B CN 201310263083 A CN201310263083 A CN 201310263083A CN 103390883 B CN103390883 B CN 103390883B
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- resistance
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- semiconductor
- oxide
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
- H02H11/003—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
Abstract
The invention discloses a kind of charging protective circuit of lithium cell, comprise switching circuit and the charging signals testing circuit for controlling this switching circuit break-make, switching circuit comprises metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, and charging signals testing circuit comprises the diode D1, voltage-stabiliser tube ZD1, resistance R1, the resistance R2 that are connected on successively between charger negative terminal P-and negative electrode of chargeable battery B-; Described diode D1 positive pole connecting charger negative terminal P-, diode D1 negative pole connects voltage-stabiliser tube ZD1 voltage stabilizing end, the voltage-stabiliser tube ZD1 other end is contact resistance R1, resistance R2 successively, and the tie point of resistance R1, resistance R2 is as the output OUT connecting valve control circui end of signal deteching circuit.The invention provides a kind of charger is connected whether exact connect ion identification circuit with battery that distinguishes, the circuit avoids the battery quality that circuit connection error brings and damage, extend the useful life of battery, improve operating efficiency, environmental protection and energy saving.
Description
Technical field
The present invention relates to battery detecting protection field, particularly relate to a kind of charging protective circuit of lithium cell.
Background technology
Along with the popularization gradually of environmental protection concept, the novel environment friendly energy that lithium energy-storage battery is promoted as whole world emphasis, no longer be confined to the application of the middle-size and small-size mobile device electrical source of power such as mobile phone, MP3, MP4, digital camera, notebook, just progressively replace lead-acid battery, become the power supply of the instruments such as electric tool, battery-operated motor cycle, electric bicycle.Lithium battery is also just extended to communication base station by country, adopts high-power lithium battery as the accumulation power supply of communication base station.Meanwhile, move towards commercial market with new forms of energy, roof photovoltaic power generation system or household small-size wind powered generator system are installed by a lot of family, and therefore family's energy-storage system just becomes it than one of indispensable equipment.Due to base station maintenance personnel and the large multipair lithium battery control system proximate nutrition of domestic consumer fuzzy, the technology of this area is not understood, therefore there will be various misoperation installing and using in process.Occur when mounted to prevent control system damaging, control system must possess the measure preventing incorrect link.Accompanying drawing 1 and accompanying drawing 2 are correctly installed and wrong mounting circuit schematic diagram for lithium battery.
Summary of the invention
The present invention provides a kind of charging protective circuit of lithium cell to solve the problems of the technologies described above, and this charging protective circuit of lithium cell solves battery charging operation and to slip up the cell damage problem brought, and improves operating efficiency, economizes on resources, be of value to environmental protection.
Technical problem to be solved by this invention is achieved by the following technical programs: a kind of charging protective circuit of lithium cell, comprise the switching circuit be connected between negative electrode of chargeable battery B-with charger negative terminal P-and the charging signals testing circuit be connected with switching circuit for controlling this switching circuit break-make, described charging signals testing circuit comprises the diode D1, voltage-stabiliser tube ZD1, resistance R1, the resistance R2 that are connected on successively between charger negative terminal P-and negative electrode of chargeable battery B-; Described diode D1 positive pole connecting charger negative terminal P-, diode D1 negative pole connects voltage-stabiliser tube ZD1 voltage stabilizing end, the voltage-stabiliser tube ZD1 other end is contact resistance R1, resistance R2 successively, and the tie point of resistance R1, resistance R2 is as the output OUT connecting valve control circui end of signal deteching circuit.
Preferably, described switching circuit comprises metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, the drain electrode connecting charger negative terminal P-of described metal-oxide-semiconductor Q1, and its source electrode is connected to negative cell terminal end B-, its grid connects power input IN, is provided with resistance R3 between grid and circuit input end IN; The drain electrode of described metal-oxide-semiconductor Q2 is connected with the grid of metal-oxide-semiconductor Q1, and its source electrode is connected to negative electrode of chargeable battery terminal B-, and its grid is connected to the output OUT of signal deteching circuit.
The present invention has following beneficial effect: the present invention is provided with a kind of charger is connected whether exact connect ion identification circuit with battery that distinguishes, control battery charges normal, this avoid the battery quality damage that circuit connection error is brought, extend the useful life of battery, improve operating efficiency, environmental protection and energy saving.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of charging protective circuit of lithium cell exact connect ion.
Fig. 2 is the circuit theory diagrams of charging protective circuit of lithium cell incorrect link.
Fig. 3 is the concrete implementing circuit figure of the embodiment of the present invention one charging protective circuit of lithium cell.
Fig. 4 is the concrete implementing circuit figure of the embodiment of the present invention two charging protective circuit of lithium cell.
Embodiment
In order to allow those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is further elaborated.
Embodiment one: as shown in Figure 3.The charging protective circuit of lithium cell that the present embodiment discloses comprises the switching circuit be connected between negative electrode of chargeable battery B-with charger negative terminal P-and the charging signals testing circuit be connected with switching circuit for controlling this switching circuit break-make, and described charging signals testing circuit comprises the diode D1, voltage-stabiliser tube ZD1, resistance R1, the resistance R2 that are connected on successively between charger negative terminal P-and negative electrode of chargeable battery B-; Described diode D1 positive pole connecting charger negative terminal P-, diode D1 negative pole connects voltage-stabiliser tube ZD1 voltage stabilizing end, the voltage-stabiliser tube ZD1 other end is contact resistance R1, resistance R2 successively, and the tie point of resistance R1, resistance R2 is as the output OUT connecting valve control circui end of signal deteching circuit.
Wherein, the conducting voltage of voltage-stabiliser tube ZD1 is greater than lithium battery voltage, and when charger exact connect ion, charger negative terminal P-voltage is negative pressure or is less than lithium battery voltage, and diode D1 or voltage-stabiliser tube ZD1 can not conducting, and output OUT is low level.When charger incorrect link, charger negative terminal P-voltage is greater than lithium battery voltage, and diode D1 and voltage-stabiliser tube ZD1 conducting, output OUT is high level.Therefore, the low and high level detecting output OUT by switching circuit can judge charger whether connection error.
Embodiment two: as shown in Figure 4.The charging protective circuit of lithium cell that the present embodiment discloses is the improvement on embodiment one basis.Specifically, the present embodiment comprises the switching circuit be connected between negative electrode of chargeable battery B-with charger negative terminal P-and the charging signals testing circuit be connected with switching circuit for controlling this switching circuit break-make, and described charging signals testing circuit comprises the diode D1, voltage-stabiliser tube ZD1, resistance R1, the resistance R2 that are connected on successively between charger negative terminal P-and negative electrode of chargeable battery B-; Described diode D1 positive pole connecting charger negative terminal P-, diode D1 negative pole connects voltage-stabiliser tube ZD1 voltage stabilizing end, the voltage-stabiliser tube ZD1 other end is contact resistance R1, resistance R2 successively, and the tie point of resistance R1, resistance R2 is as the output OUT connecting valve control circui end of signal deteching circuit; Described switching circuit comprises metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, the drain electrode connecting charger negative terminal P-of described metal-oxide-semiconductor Q1, and its source electrode is connected to negative cell terminal end B-, and its grid connects power input IN, is provided with resistance R3 between grid and circuit input end IN; The drain electrode of described metal-oxide-semiconductor Q2 is connected with the grid of metal-oxide-semiconductor Q1, and its source electrode is connected to negative electrode of chargeable battery terminal B-, and its grid is connected to the output OUT of signal deteching circuit.
When the scheme that the present embodiment discloses can work as charger incorrect link, the loop of lithium battery and charger is in closed condition, prevents lithium battery or charger from occurring damaging.Charging protective circuit of lithium cell operation principle in one in conjunction with the embodiments, specifically, when charger exact connect ion, output OUT is low level, and NMOS tube Q2 closes, and the control pole tension of NMOS tube Q1 is drawn high by IN terminal, NMOS tube Q1 opens, the complete conducting in the loop between charger and battery; When charger incorrect link, output OUT is high level, NMOS tube Q2 conducting, and the control pole tension of NMOS tube Q1 is dragged down by Q2, and NMOS tube Q1 closes, and the loop between charger and battery disconnects.
Can find out from above-mentioned two embodiments, although physical circuit is comparatively succinct, be that of avoiding the battery quality damage that circuit connection error is brought, extend the useful life of battery, improve operating efficiency, environmental protection and energy saving, practical, cost is low, has substantive distinguishing features and marked improvement.
It is more than the present invention's preferably implementation; it should be noted that; when not deviating from the present invention's spirit and essence thereof; as other concrete forms etc. of switching circuit, those of ordinary skill in the art are when making various corresponding change according to the present invention and be out of shape the protection range that should belong to the claim appended by the present invention.
Claims (1)
1. a charging protective circuit of lithium cell, comprising the switching circuit be connected between negative electrode of chargeable battery B-with charger negative terminal P-and the charging signals testing circuit be connected with switching circuit for controlling this switching circuit break-make, it is characterized in that: described charging signals testing circuit comprises the diode D1, voltage-stabiliser tube ZD1, resistance R1, the resistance R2 that are connected on successively between charger negative terminal P-and negative electrode of chargeable battery B-; Described diode D1 positive pole connecting charger negative terminal P-, diode D1 negative pole connects voltage-stabiliser tube ZD1 voltage stabilizing end, the voltage-stabiliser tube ZD1 other end is contact resistance R1, resistance R2 successively, and the tie point of resistance R1, resistance R2 is as the output OUT connecting valve control circui end of signal deteching circuit; Described switching circuit comprises metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, the drain electrode connecting charger negative terminal P-of described metal-oxide-semiconductor Q1, and its source electrode is connected to negative cell terminal end B-, and its grid connects power input IN, is provided with resistance R3 between grid and circuit input end IN; The drain electrode of described metal-oxide-semiconductor Q2 is connected with the grid of metal-oxide-semiconductor Q1, and its source electrode is connected to negative electrode of chargeable battery terminal B-, and its grid is connected to the output OUT of signal deteching circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310263083.9A CN103390883B (en) | 2013-06-28 | 2013-06-28 | A kind of charging protective circuit of lithium cell |
| PCT/CN2013/086524 WO2014205974A1 (en) | 2013-06-28 | 2013-11-05 | Charging protection circuit for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310263083.9A CN103390883B (en) | 2013-06-28 | 2013-06-28 | A kind of charging protective circuit of lithium cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103390883A CN103390883A (en) | 2013-11-13 |
| CN103390883B true CN103390883B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310263083.9A Active CN103390883B (en) | 2013-06-28 | 2013-06-28 | A kind of charging protective circuit of lithium cell |
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| Country | Link |
|---|---|
| CN (1) | CN103390883B (en) |
| WO (1) | WO2014205974A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786985A (en) * | 2017-02-10 | 2017-05-31 | 厦门市普星电子科技有限公司 | The battery protecting method and circuit and supporting charger of a kind of electrical equipment |
| DE102017219551A1 (en) | 2017-11-03 | 2019-05-09 | Continental Teves Ag & Co. Ohg | Polarity reversal protection arrangement, method for operating the Verpolschutzanordnung and corresponding use |
| CN108282185B (en) * | 2018-02-08 | 2023-05-26 | 福建省万华电子科技有限公司 | Control circuit for transmitting interphone information through charger base |
| CN110571883B (en) * | 2019-09-10 | 2023-05-09 | 欣旺达电子股份有限公司 | Lithium battery charging current limiting system |
| CN113022896B (en) * | 2021-03-26 | 2022-12-13 | 上海卫星工程研究所 | Hot knife unblock drive circuit device |
| CN113054723B (en) * | 2021-04-30 | 2023-11-21 | 上海器外文化科技有限公司 | Electric screwdriver and charging circuit thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201312124Y (en) * | 2008-12-09 | 2009-09-16 | 黄敬党 | Protection circuit for preventing accumulator charging and reversal connection |
| CN201754501U (en) * | 2010-07-30 | 2011-03-02 | 天津力神电池股份有限公司 | Reverse-charge prevention circuit of lithium battery protecting circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10034442A1 (en) * | 2000-07-15 | 2002-01-24 | Bayerische Motoren Werke Ag | Electronic unit and method for detecting a polarity reversal in the vehicle electrical system voltage in motor vehicles |
| DE102010051874A1 (en) * | 2010-11-22 | 2012-05-24 | Init Innovative Informatikanwendungen In Transport-, Verkehrs- Und Leitsystemen Gmbh | Circuit for protection against reverse polarity |
| CN101997328B (en) * | 2010-12-08 | 2013-02-27 | 上海理工大学 | Lithium battery management system |
-
2013
- 2013-06-28 CN CN201310263083.9A patent/CN103390883B/en active Active
- 2013-11-05 WO PCT/CN2013/086524 patent/WO2014205974A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201312124Y (en) * | 2008-12-09 | 2009-09-16 | 黄敬党 | Protection circuit for preventing accumulator charging and reversal connection |
| CN201754501U (en) * | 2010-07-30 | 2011-03-02 | 天津力神电池股份有限公司 | Reverse-charge prevention circuit of lithium battery protecting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103390883A (en) | 2013-11-13 |
| WO2014205974A1 (en) | 2014-12-31 |
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