CN205304225U - Lithium battery protection circuit of volume of taking gauge and instruction of LED lamp - Google Patents
Lithium battery protection circuit of volume of taking gauge and instruction of LED lamp Download PDFInfo
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- CN205304225U CN205304225U CN201520855256.0U CN201520855256U CN205304225U CN 205304225 U CN205304225 U CN 205304225U CN 201520855256 U CN201520855256 U CN 201520855256U CN 205304225 U CN205304225 U CN 205304225U
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Abstract
The utility model discloses a lithium battery protection circuit of volume of taking gauge and instruction of LED lamp, including lithium ion protection IC, the MOS that charges, the MOS that discharges, communication port, LED indicating circuit, current detection circuit and lithium cell B1 -B4, its characterized in that, lithium ion protection IC connects the MOS that charges respectively, the MOS that discharges, communication port, LED indicating circuit, current detection resistance and lithium cell B1 -B4. The utility model discloses a key feature is: have accurate electric quantity gauge function, the external SBS V1.1 interface of accessible is read data such as SOC, FCC, RC, voltage, electric current, temperature by the host computer. The nimble required each item parameter of protection circuit of adjusting of host computer software support. Has accurate LED electric quantity instruction function, low power LED lamp warning etc..
Description
Technical field
The utility model relates to a kind of lithium ion holding circuit, specifically a kind of lithium battery protection circuit with amount metering and the instruction of LED lamp.
Background technology
Lithium ion battery is a kind of novel battery that can discharge and recharge continuously that last century, the nineties grew up. Lithium ion battery has the high and a series of advantage such as have extended cycle life of energy density, obtains extensive use in portable electric appts. Along with the development of the new and high technology such as space, microelectronics, for the mobile energy, especially can provide the demand of secondary cell (battery pack) of high-energy-density and longer life increasing. At present in rechargeable secondary cell system, the features such as the energy density of providing is large, energy-conserving and environment-protective, long service life are provided lithium ion battery, make it in some need to provide the application of the high density energy, replace ni-mh, nickel-cadmium cell system, as many aspects such as electric motor car, aeronautical and space technology, electronic equipments, particularly become very soon the fashion of the developed countries such as America and Europe and developing country in the extensive use aspect family expenses, electric tool.
Along with digital product development; having intelligentized lithium ion battery is more and more paid attention to; detect in real time about accurate battery electric quantity metering and battery performance; it is the problem of correlation engineering technical staff overriding concern; this mentality of designing; jump out the pure hardware protection circuit of commonly using at present, adopted the mentality of designing with electric quantity metering and battery capacity indication, be convenient to intellectuality and market demand.
Utility model content
The purpose of this utility model is to provide a kind of lithium battery protection circuit with amount metering and the instruction of LED lamp, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of lithium battery protection circuit with amount metering and the instruction of LED lamp; comprise lithium ion protection IC, charging MOS, electric discharge MOS, communication port, LED indicating circuit, current detection circuit and lithium battery B1-B4, described lithium ion protection IC connects respectively charging MOS, electric discharge MOS, communication port, LED indicating circuit, current sense resistor and lithium battery B1-B4.
As preferred version of the present utility model: described protection IC calculates dump energy by current detection circuit, and according to the size of electric weight, the number of selecting LED lamp to be lit.
Compared with prior art, the beneficial effects of the utility model are: main feature of the present utility model is: have accurate electric quantity metering function, can pass through external SBSV1.1 interface, read the data such as SOC, FCC, RC, voltage, electric current, temperature by host computer. The required parameters of holding circuit is adjusted in upper computer software support flexibly. There is accurate LED electric quantity indication function, low electric weight LED lamp warning etc.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-2; a kind of lithium battery protection circuit with amount metering and the instruction of LED lamp; comprise lithium ion protection IC, charging MOS, electric discharge MOS, communication port, LED indicating circuit, current detection circuit and lithium battery B1-B4, described lithium ion protection IC connects respectively charging MOS, electric discharge MOS, communication port, LED indicating circuit, current sense resistor and lithium battery B1-B4.
Protection IC calculates dump energy by current detection circuit, and according to the size of electric weight, the number of selecting LED lamp to be lit.
Operation principle of the present utility model is: see Fig. 2: battery all functions are all sent instruction by master chip, and M2 and M3 two metal-oxide-semiconductors are respectively electric discharge and charging MOS, when it's the end or too high is past battery core voltage; electric current is excessive, and excess Temperature, when external short-circuit of battery; two metal-oxide-semiconductors can correspondingly be closed, to realize protection.
How much LED1～LED5 is battery capacity indication circuit, and each LED lamp represents 20% electric weight, when pressing S1 switch, follow according to battery carried charge, and LED lantern festival is lighted by corresponding. Under charged state, indicator lamp is indicated equally, and the corresponding LED lamp of current the highest electric weight continues flicker. When battery electric quantity is lower than 10% time, LED1 glimmers automatically, to point out electric weight too low.
R20, R24, RT1, C18 has formed temperature sensing circuit, reaches 60 DEG C when RT1 detects current environmental temperature, and IC1 will close M2 and M3, forbid discharging and recharging, until recover.
R17, R18, C13～C15, R25 has formed current detection circuit, and by this circuit, IC1 carries out electric weight calculating, overcurrent and short-circuit detecting.
Claims (2)
1. the lithium battery protection circuit with amount metering and the instruction of LED lamp; comprise lithium ion protection IC, charging MOS, electric discharge MOS, communication port, LED indicating circuit, current detection circuit and lithium battery B1-B4; it is characterized in that, described lithium ion protection IC connects respectively charging MOS, electric discharge MOS, communication port, LED indicating circuit, current sense resistor and lithium battery B1-B4.
2. a kind of lithium battery protection circuit with amount metering and the instruction of LED lamp according to claim 1, is characterized in that, described protection IC calculates dump energy by current detection circuit, and according to the size of electric weight, the number of selecting LED lamp to be lit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520855256.0U CN205304225U (en) | 2015-10-29 | 2015-10-29 | Lithium battery protection circuit of volume of taking gauge and instruction of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520855256.0U CN205304225U (en) | 2015-10-29 | 2015-10-29 | Lithium battery protection circuit of volume of taking gauge and instruction of LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205304225U true CN205304225U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520855256.0U Active CN205304225U (en) | 2015-10-29 | 2015-10-29 | Lithium battery protection circuit of volume of taking gauge and instruction of LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205304225U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106502970A (en) * | 2016-10-27 | 2017-03-15 | 广东小天才科技有限公司 | A kind of method and device for realizing title lamp effect |
| WO2021063290A1 (en) * | 2019-09-30 | 2021-04-08 | 深圳市道通科技股份有限公司 | Battery and automotive diagnostic tablet |
-
2015
- 2015-10-29 CN CN201520855256.0U patent/CN205304225U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106502970A (en) * | 2016-10-27 | 2017-03-15 | 广东小天才科技有限公司 | A kind of method and device for realizing title lamp effect |
| WO2021063290A1 (en) * | 2019-09-30 | 2021-04-08 | 深圳市道通科技股份有限公司 | Battery and automotive diagnostic tablet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |