CN202678945U - Waterproof protector of lithium battery - Google Patents
Waterproof protector of lithium battery Download PDFInfo
- Publication number
- CN202678945U CN202678945U CN 201220364470 CN201220364470U CN202678945U CN 202678945 U CN202678945 U CN 202678945U CN 201220364470 CN201220364470 CN 201220364470 CN 201220364470 U CN201220364470 U CN 201220364470U CN 202678945 U CN202678945 U CN 202678945U
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- mos
- battery pack
- battery
- discharge
- waterproof
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a waterproof protector of a lithium battery, relating to the technical field of production of the lithium batteries. The waterproof protector comprises a battery management chip, a waterproof detection circuit, a discharge MOS (Metal Oxide Semiconductor) and a charge MOS, wherein an input end of the waterproof detection circuit is connected with one end of the waterproof detection circuit, a control end of the discharge MOS is connected with a pole G of the discharge MOS, a control end of the charge MOS is connected with a pole G of the charge MOS, an input end of the charge MOS is connected with a pole S of the charge MOS, an anode wiring end of a battery pack is connected with an anode of the battery pack, a cathode wiring end of the battery pack is connected with a cathode of the battery pack, the other end of the waterproof detection circuit is respectively connected with the anode of the battery pack, a load anode and a charger anode, a pole D of the discharge MOS is connected with a load cathode, a pole S of the discharge MOS is connected with the cathode of the battery pack, and a pole D of charge MOS is connected with a charger cathode. According to the utility model, the anti-water protection for the battery pack and the circuit is realized by opening and closing the discharge MOS through the battery management chip according to sampling circuit voltage detected by the waterproof detection circuit, so that the waterproof protector can carry out conventional protection on the lithium battery and simultaneously has an anti-water protection function.
Description
Technical field
The utility model relates to the lithium battery production technical field, is specifically related to a kind of li-ion cell protection device.
Background technology
Li-ion cell protection device in the market generally all has the functions such as the charge and discharge overcurrent protection, battery pack charge and discharge temperature protection, battery pack short-circuit protection, the control of light current switch of over-charge protective and Cross prevention, battery pack; but do not have into the water defencive function; in case there is water to enter in the battery pack; will cause burning of battery pack and circuit, and then vehicle is run out of steam and cause certain economic loss.
The utility model content
The purpose of this utility model provides a kind of water proofing of lithium battery protector; he not only can carry out GPF (General Protection False to lithium battery; also have simultaneously into the water defencive function; it can disconnect the battery power discharge switch when sending battery water inlet warning, thereby has avoided the generation of battery pack and short circuit situation.
In order to solve existing problem in the background technology, the utility model is by the following technical solutions: it comprises battery management chip, the waterproof testing circuit, discharge MOS, charging MOS, described battery management chip comprises waterproof testing circuit input, discharge MOS control end, charging MOS control end, charging MOS input, the battery anode terminals, the battery pack negative terminals, described waterproof testing circuit input is taken over control water testing circuit one end, the G utmost point of discharge MOS control termination discharge MOS, the G utmost point of charging MOS control termination charging MOS, the S utmost point of charging MOS input termination charging MOS, the battery anode terminals are connected with battery anode, the battery pack negative terminals is connected with the battery pack negative pole;
The described waterproof testing circuit other end is connected with battery anode, load are anodal, charger is anodal respectively, and the D utmost point of discharge MOS is connected with the load negative pole, and the S utmost point is connected with the battery pack negative pole, and the D utmost point of the MOS that charges is connected with the negative pole of charger.
When battery pack and circuit are not intake; the sample circuit voltage that the waterproof testing circuit detects is greater than setting voltage; the waterproof testing circuit will send this signal to battery management chip; battery management chip is given an order according to this signal and is allowed discharge MOS to open; this moment, battery pack will be powered to load; if when battery pack and circuit water inlet; because water has internal resistance; the sample circuit voltage that the waterproof testing circuit detects will be less than setting voltage; the waterproof testing circuit will send this signal to battery management chip; battery management chip is given an order according to this signal discharge MOS is disconnected; this moment, battery pack will stop load supplying, thereby had protected battery pack and circuit.
Water proofing of lithium battery protector of the present utility model; whether the sample circuit voltage that detects according to the waterproof testing circuit is greater than setting voltage; then this signal is transferred to battery management chip, by battery management chip the switching of discharge MOS is controlled to realize water inlet protection to battery pack and circuit.Thereby the utility model can carry out GPF (General Protection False to lithium battery, has again into the water defencive function simultaneously.
Description of drawings
Fig. 1 is water proofing of lithium battery protector one embodiment schematic diagram of the present utility model
Embodiment
Referring to Fig. 1, a kind of water proofing of lithium battery protector, it comprises battery management chip 1, waterproof testing circuit 2, discharge MOS3, charging MOS4, described battery management chip 1 comprises waterproof testing circuit input, discharge MOS control end, charging MOS control end, charging MOS input, the battery anode terminals, the battery pack negative terminals, described waterproof testing circuit input is taken over control water testing circuit 2 one ends, the G utmost point of discharge MOS control termination discharge MOS3, the G utmost point of charging MOS control termination charging MOS4, the S utmost point of charging MOS input termination charging MOS4, the battery anode terminals are connected with battery anode, the battery pack negative terminals is connected with the battery pack negative pole;
Described waterproof testing circuit 2 other ends are connected with battery anode, load are anodal, charger is anodal respectively, and the D utmost point of discharge MOS3 is connected with the load negative pole, and the S utmost point is connected with the battery pack negative pole, and the D utmost point of the MOS4 that charges is connected with the negative pole of charger.
When battery pack and circuit are not intake; the sample circuit voltage that the waterproof testing circuit detects is greater than setting voltage; the waterproof testing circuit will send this signal to battery management chip; battery management chip is given an order according to this signal and is allowed discharge MOS to open; this moment, battery pack will be powered to load; if when battery pack and circuit water inlet; because water has internal resistance; the sample circuit voltage that the waterproof testing circuit detects will be less than setting voltage; the waterproof testing circuit will send this signal to battery management chip; battery management chip is given an order according to this signal discharge MOS is disconnected; this moment, battery pack will stop load supplying, thereby had protected battery pack and circuit.
Water proofing of lithium battery protector of the present utility model; whether the sample circuit voltage that detects according to the waterproof testing circuit is greater than setting voltage; then this signal is transferred to battery management chip, by battery management chip the switching of discharge MOS is controlled to realize water inlet protection to battery pack and circuit.Thereby the utility model can carry out GPF (General Protection False to lithium battery, has again into the water defencive function simultaneously.
Claims (1)
1. a water proofing of lithium battery protector is characterized in that it is by battery management chip (1), waterproof testing circuit (2), discharge MOS (3), charging MOS (4);
Described battery management chip (1) comprises waterproof testing circuit input, discharge MOS control end, charging MOS control end, charging MOS input, the battery anode terminals, the battery pack negative terminals, described waterproof testing circuit input is taken over control water testing circuit (2) one ends, the G utmost point of discharge MOS control termination discharge MOS (3), the G utmost point of charging MOS control termination charging MOS (4), the S utmost point of charging MOS input termination charging MOS (4), the battery anode terminals are connected with battery anode, the battery pack negative terminals is connected with the battery pack negative pole;
Described waterproof testing circuit (2) other end is connected with battery anode, load are anodal, charger is anodal respectively, the D utmost point of discharge MOS (3) is connected with the load negative pole, the S utmost point is connected with the battery pack negative pole, and the D utmost point of charging MOS (4) is connected with the negative pole of charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364470 CN202678945U (en) | 2012-07-19 | 2012-07-19 | Waterproof protector of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364470 CN202678945U (en) | 2012-07-19 | 2012-07-19 | Waterproof protector of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678945U true CN202678945U (en) | 2013-01-16 |
Family
ID=47499820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220364470 Expired - Fee Related CN202678945U (en) | 2012-07-19 | 2012-07-19 | Waterproof protector of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678945U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451647A (en) * | 2016-11-08 | 2017-02-22 | 谢乐 | Protective circuit |
| CN110829385A (en) * | 2019-10-29 | 2020-02-21 | 深圳市吉影科技有限公司 | Battery leakage protection circuit and method and electronic product |
| WO2021213286A1 (en) * | 2020-04-24 | 2021-10-28 | 深圳市韶音科技有限公司 | Charging control circuit and acoustic output device |
-
2012
- 2012-07-19 CN CN 201220364470 patent/CN202678945U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451647A (en) * | 2016-11-08 | 2017-02-22 | 谢乐 | Protective circuit |
| CN110829385A (en) * | 2019-10-29 | 2020-02-21 | 深圳市吉影科技有限公司 | Battery leakage protection circuit and method and electronic product |
| WO2021213286A1 (en) * | 2020-04-24 | 2021-10-28 | 深圳市韶音科技有限公司 | Charging control circuit and acoustic output device |
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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 |
Granted publication date: 20130116 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |