CN203434607U - Lithium battery pack charging protection circuit - Google Patents
Lithium battery pack charging protection circuit Download PDFInfo
- Publication number
- CN203434607U CN203434607U CN201320552711.0U CN201320552711U CN203434607U CN 203434607 U CN203434607 U CN 203434607U CN 201320552711 U CN201320552711 U CN 201320552711U CN 203434607 U CN203434607 U CN 203434607U
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- CN
- China
- Prior art keywords
- charging
- circuit
- communication interface
- charger
- lithium battery
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a lithium battery pack charging protection circuit. The circuit comprises a protection plate and a charger, wherein the protection plate comprises a control chip; the control chip is connected with a detection unit, an equilibrium control unit, a charging control circuit IMOSFET and a protection plate communication interface; the detection unit and the equilibrium control unit are connected with the lithium battery pack; the lithium battery pack is connected with a charging line I; the charging control circuit IMOSFET is arranged on the charging line I; the charger comprises a charger communication interface and a charging circuit of an external power supply; the charging circuit is connected with a charging line II; the charging line I and the charging line II are connected through a port I and a port II; the charger communication interface forms communication connection with the protection plate communication interface; the charger communication interface is connected with a charging control circuit IIMOSFET arranged on the charging line II. The circuit of the utility model has the advantage that a dual protection design is used so that the battery pack is effectively protected and a safe accident is avoided.
Description
Technical field
The utility model relates to a kind of lithium battery group charge protector.
Background technology
When lithium battery group is charged; because of additives for overcharge protection runaway electric circuit or charger is former thereby cause the problem of overcharging and causing security incident to happen occasionally; common charging circuit relies on baffle charging MOSFT to cut off the electricity supply when charging completes or be abnormal; during due to specific reasons runaway electric circuit, cannot avoid overcharging problem; cause security incident, especially the battery pack to large capacity version, high-power type.
Summary of the invention
For solving above technical deficiency, the utility model provides a kind of lithium battery group charge protector safe to use.
The utility model is realized by following measures:
A kind of lithium battery group charge protector of the present utility model, comprising:
Baffle, comprises control chip, described control chip be connected with detecting unit, balanced control unit,
Charging control circuit I MOSFET and baffle communication interface; Detecting unit is connected with lithium battery group with balanced control unit, and lithium battery group is connected with charging circuit I, and charging control circuit I MOSFET is arranged in charging circuit I;
Charger, comprises the charging circuit of charger communication interface and external power supply, and described charging circuit connects
Be connected to charging circuit II; charging circuit I is connected with port II by port I with charging circuit II; charger communication interface is connected with the communication of baffle communication interface, and charger communication interface is connected with the charging control circuit II MOSFET being arranged in charging circuit II.
The beneficial effects of the utility model are: the utility model adopts duplicate protection design; in battery pack, occur overcharging, during the abnormality such as excess Temperature; when autoprotection circuit cuts off, charger also carries out dump; thereby effectively protected battery pack; avoid the generation of security incident, be particularly suitable for large capacity version, high-power type battery pack.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Embodiment
As shown in Figure 1, a kind of lithium battery group charge protector of the present utility model, comprises baffle A
With charger B, between baffle A and charger B, communicate with one another, cut off the electricity supply in time, prevent from overcharging, avoid the generation of security incident.
Baffle A comprises control chip, and control chip is connected with detecting unit, balanced control unit, fills
Electric control circuit I MOSFET and baffle communication interface; Detecting unit is connected with lithium battery group with balanced control unit, and lithium battery group is connected with charging circuit I, and charging control circuit I MOSFET is arranged in charging circuit I;
Charger B comprises the charging circuit of charger communication interface and external power supply, and charging circuit is connected with
Charging circuit II, charging circuit I is connected with port II by port I with charging circuit II, and charger communication interface is connected with the communication of baffle communication interface, and charger communication interface is connected with the charging control circuit II MOSFET being arranged in charging circuit II.
When charger B charges to lithium battery group by baffle; between baffle A and charger B, by communication interface, carry out data sharing; two groups of data of control chip inner setting of baffle A; for example 4.20v and 4.30v are set in monomer voltage protection; when monomer voltage arrives 4.20v; the charging control circuit I MOSFET of tripping protection plate itself, output circuit for charger does not cut off.As baffle circuit abnormality, when monomer battery voltage continues to raise arrival 4.30v, the control chip output order of baffle A, cuts off the charging control circuit II MOSFET on charger B, thereby has effectively protected battery pack, has avoided overcharging problem.
The above is only the preferred implementation of this patent; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the art of this patent principle; can also make some improvement and replacement, these improvement and replacement also should be considered as the protection range of this patent.
Claims (1)
1. a lithium battery group charge protector, is characterized in that, comprising:
Baffle, comprises control chip, and described control chip is connected with detecting unit, balanced control unit, charging control circuit I MOSFET and baffle communication interface; Detecting unit is connected with lithium battery group with balanced control unit, and lithium battery group is connected with charging circuit I, and charging control circuit I MOSFET is arranged in charging circuit I;
Charger; the charging circuit that comprises charger communication interface and external power supply; described charging circuit is connected with charging circuit II; charging circuit I is connected with port II by port I with charging circuit II; charger communication interface is connected with the communication of baffle communication interface, and charger communication interface is connected with the charging control circuit II MOSFET being arranged in charging circuit II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320552711.0U CN203434607U (en) | 2013-09-06 | 2013-09-06 | Lithium battery pack charging protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320552711.0U CN203434607U (en) | 2013-09-06 | 2013-09-06 | Lithium battery pack charging protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203434607U true CN203434607U (en) | 2014-02-12 |
Family
ID=50063625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320552711.0U Expired - Fee Related CN203434607U (en) | 2013-09-06 | 2013-09-06 | Lithium battery pack charging protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203434607U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687558A (en) * | 2019-02-23 | 2019-04-26 | 深圳市超能威电子有限公司 | The control system and method for multi-series lithium battery group shielding failure |
| USD929336S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929337S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929334S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929335S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929338S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929339S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD953268S1 (en) | 2019-09-05 | 2022-05-31 | Techtronic Cordless Gp | Electrical interface |
| USD1012855S1 (en) | 2019-09-05 | 2024-01-30 | Techtronic Cordless Gp | Battery pack |
-
2013
- 2013-09-06 CN CN201320552711.0U patent/CN203434607U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687558A (en) * | 2019-02-23 | 2019-04-26 | 深圳市超能威电子有限公司 | The control system and method for multi-series lithium battery group shielding failure |
| USD929336S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929337S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929334S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929335S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929338S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929339S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD953268S1 (en) | 2019-09-05 | 2022-05-31 | Techtronic Cordless Gp | Electrical interface |
| USD1012855S1 (en) | 2019-09-05 | 2024-01-30 | Techtronic Cordless Gp | Battery pack |
| USD1013634S1 (en) | 2019-09-05 | 2024-02-06 | Techtronic Cordless Gp | Battery pack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20170906 |