CN204886149U - Cell protection circuit - Google Patents
Cell protection circuit Download PDFInfo
- Publication number
- CN204886149U CN204886149U CN201520317453.7U CN201520317453U CN204886149U CN 204886149 U CN204886149 U CN 204886149U CN 201520317453 U CN201520317453 U CN 201520317453U CN 204886149 U CN204886149 U CN 204886149U
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- battery
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- semiconductor
- oxide
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Abstract
The utility model provides a cell protection circuit, this circuit of includes control circuit, main circuit and reposition of redundant personnel discharge circuit, control circuit includes battery protection chip, the MOS pipe that charges, the MOS that discharges pipe and overcurrent protection resistance, overcurrent protection resistance, the MOS that charges pipe and the MOS pipe that discharges are connected with battery protection chip respectively, the main circuit is including charging control switch, the control switch that discharges, battery, first diode and second diode, the reposition of redundant personnel discharge circuit is including reposition of redundant personnel switch and reposition of redundant personnel discharge resistance. Implement the utility model discloses a cell protection circuit has following beneficial effect: multisection lithium A series of cells's group battery protection shield has been realized, except that can accomplishing necessary overvoltage, undertension, overcurrent and short -circuit protection function, the equalizing charge function can also be realized.
Description
Technical field
The utility model relates to the technical field of circuit protection, more particularly, relates to a kind of battery protecting circuit.
Background technology
A lot of load devises current foldback circuit and short-circuit protection circuit all respectively, and when electric current exceedes rated current or the load short circuits of load, current protecting circuit or short-circuit protection circuit will make load auto-breaking respectively, thus are protected load.But, current foldback circuit and short-circuit protection circuit separately design one side will be increased the volume of load, also add the design cost of load on the other hand.
Utility model content
Technical problem to be solved in the utility model is; in use can not equalizing charge for existing series-connected cell; make the performance of whole Battery pack and life-span affected technical problem; there is provided a kind of battery protecting circuit, in order to improve the function of overvoltage, under voltage, overcurrent, short-circuit protection and equalizing charge.
The utility model solves the problems of the technologies described above, and provide the following technical scheme solved: a kind of battery protecting circuit, this circuit comprises control circuit, main circuit and shunting discharge circuit;
Described control circuit comprises battery protection chip, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor and overcurrent protection resistance; Described overcurrent protection resistance, charging metal-oxide-semiconductor are connected with battery protection chip respectively with electric discharge metal-oxide-semiconductor;
Described main circuit comprises charging control switch, discharge control switch, battery, the first diode and the second diode;
Described shunting discharge circuit comprises diverting switch and shunting discharge resistance.
In the battery protecting circuit of this practicality, described first diode is connected with charging control switch; Described second diode is connected with discharge control switch.
In the battery protecting circuit of this practicality, described battery protection chip comprises charging and controls leads ends CO, control of discharge leads ends DO, discharge over-current and short-circuit detecting leads ends VM, anode VDD and battery cathode VSS.
In the battery protecting circuit of this practicality, described charging control switch is connected with charging metal-oxide-semiconductor, and described charging metal-oxide-semiconductor controls leads ends CO with the charging of battery protection chip and is connected.
In the battery protecting circuit of this practicality, described discharge control switch is connected with electric discharge metal-oxide-semiconductor, and described electric discharge metal-oxide-semiconductor is connected with the control of discharge leads ends DO of battery protection chip.
In the battery protecting circuit of this practicality, described main circuit is connected with discharge over-current and short-circuit detecting leads ends VM by overcurrent protection resistance.
In the battery protecting circuit of this practicality, described diverting switch, shunting discharge resistance and described anode VDD and battery cathode VSS form loop.
In the battery protecting circuit of this practicality, described charging is controlled leads ends CO and is connected by diverting switch with anode VDD.
In the battery protecting circuit of this practicality, described battery protection chip, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor and overcurrent protection resistance are at least one; Described diverting switch, shunting discharge resistance and battery are at least one.
Implement battery protecting circuit of the present utility model, there is following beneficial effect: the battery pack protection plate achieving multisection lithium battery series connection, except can completing necessary overvoltage, under voltage, overcurrent and short-circuit protection function, equalizing charge function can also be realized.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of battery protecting circuit of the present utility model;
1, battery, 2, shunting discharge resistance, 3, diverting switch; 4, overcurrent protection resistance; 5, for abridged Li battery protection IC and circuit connecting section are divided, 6, battery protection chip, 7, charging metal-oxide-semiconductor; 8, discharge metal-oxide-semiconductor; 9, charging control switch, 10, discharge control switch, 11, be control circuit; 12, main circuit, 13, shunting discharge circuit.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, be the structural representation of battery protecting circuit of the present utility model; A kind of battery protecting circuit, this circuit comprises control circuit, main circuit and shunting discharge circuit;
Described control circuit comprises battery protection chip, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor and overcurrent protection resistance; Described overcurrent protection resistance, charging metal-oxide-semiconductor are connected with battery protection chip respectively with electric discharge metal-oxide-semiconductor;
Described main circuit comprises charging control switch, discharge control switch, battery, the first diode and the second diode;
Described shunting discharge circuit comprises diverting switch and shunting discharge resistance.
In the battery protecting circuit of this practicality, described first diode is connected with charging control switch; Described second diode is connected with discharge control switch.
In the battery protecting circuit of this practicality, described battery protection chip comprises charging and controls leads ends CO, control of discharge leads ends DO, discharge over-current and short-circuit detecting leads ends VM, anode VDD and battery cathode VSS.
In the battery protecting circuit of this practicality, described charging control switch is connected with charging metal-oxide-semiconductor, and described charging metal-oxide-semiconductor controls leads ends CO with the charging of battery protection chip and is connected.
In the battery protecting circuit of this practicality, described discharge control switch is connected with electric discharge metal-oxide-semiconductor, and described electric discharge metal-oxide-semiconductor is connected with the control of discharge leads ends DO of battery protection chip.
In the battery protecting circuit of this practicality, described main circuit is connected with discharge over-current and short-circuit detecting leads ends VM by overcurrent protection resistance.
In the battery protecting circuit of this practicality, described diverting switch, shunting discharge resistance and described anode VDD and battery cathode VSS form loop.
In the battery protecting circuit of this practicality, described charging is controlled leads ends CO and is connected by diverting switch with anode VDD.
In the battery protecting circuit of this practicality, described battery protection chip, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor and overcurrent protection resistance are at least one; Described diverting switch, shunting discharge resistance and battery are at least one.
Compared with prior art; implement battery protecting circuit of the present utility model; there is following beneficial effect: the battery pack protection plate achieving multisection lithium battery series connection, except can completing necessary overvoltage, under voltage, overcurrent and short-circuit protection function, equalizing charge function can also be realized.
The above embodiment only have expressed execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (9)
1. a battery protecting circuit, is characterized in that, this circuit comprises control circuit, main circuit and shunting discharge circuit;
Described control circuit comprises battery protection chip, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor and overcurrent protection resistance; Described overcurrent protection resistance, charging metal-oxide-semiconductor are connected with battery protection chip respectively with electric discharge metal-oxide-semiconductor;
Described main circuit comprises charging control switch, discharge control switch, battery, the first diode and the second diode;
Described shunting discharge circuit comprises diverting switch and shunting discharge resistance.
2. battery protecting circuit according to claim 1, is characterized in that, described first diode is connected with charging control switch; Described second diode is connected with discharge control switch.
3. battery protecting circuit according to claim 1, is characterized in that, described battery protection chip comprises charging and controls leads ends CO, control of discharge leads ends DO, discharge over-current and short-circuit detecting leads ends VM, anode VDD and battery cathode VSS.
4. the battery protecting circuit according to claim 1 or 3, is characterized in that, described charging control switch is connected with charging metal-oxide-semiconductor, and described charging metal-oxide-semiconductor controls leads ends CO with the charging of battery protection chip and is connected.
5. the battery protecting circuit according to claim 1 or 3, is characterized in that, described discharge control switch is connected with electric discharge metal-oxide-semiconductor, and described electric discharge metal-oxide-semiconductor is connected with the control of discharge leads ends DO of battery protection chip.
6. the battery protecting circuit according to claim 1 or 3, is characterized in that, described main circuit is connected with discharge over-current and short-circuit detecting leads ends VM by overcurrent protection resistance.
7. battery protecting circuit according to claim 3, is characterized in that, described diverting switch, shunting discharge resistance and described anode VDD and battery cathode VSS form loop.
8. battery protecting circuit according to claim 3, is characterized in that, described charging is controlled leads ends CO and is connected by diverting switch with anode VDD.
9. battery protecting circuit according to claim 1, is characterized in that, described battery protection chip, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor and overcurrent protection resistance are at least one; Described diverting switch, shunting discharge resistance and battery are at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317453.7U CN204886149U (en) | 2015-05-16 | 2015-05-16 | Cell protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317453.7U CN204886149U (en) | 2015-05-16 | 2015-05-16 | Cell protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886149U true CN204886149U (en) | 2015-12-16 |
Family
ID=54830481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520317453.7U Active CN204886149U (en) | 2015-05-16 | 2015-05-16 | Cell protection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204886149U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105955009A (en) * | 2016-04-27 | 2016-09-21 | 深圳还是威健康科技有限公司 | Power supply circuit and intelligent bracelet of real-time clock |
| CN108682289A (en) * | 2018-07-10 | 2018-10-19 | 成都中辰信息科技有限公司 | A kind of school bag is listed |
-
2015
- 2015-05-16 CN CN201520317453.7U patent/CN204886149U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105955009A (en) * | 2016-04-27 | 2016-09-21 | 深圳还是威健康科技有限公司 | Power supply circuit and intelligent bracelet of real-time clock |
| CN105955009B (en) * | 2016-04-27 | 2019-12-10 | 深圳市元征科技股份有限公司 | Power supply circuit of real-time clock and intelligent bracelet |
| CN108682289A (en) * | 2018-07-10 | 2018-10-19 | 成都中辰信息科技有限公司 | A kind of school bag is listed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |