CN203951172U - Lithium battery protection board circuit based on NTC paster thermistor element - Google Patents
Lithium battery protection board circuit based on NTC paster thermistor element Download PDFInfo
- Publication number
- CN203951172U CN203951172U CN201420286604.2U CN201420286604U CN203951172U CN 203951172 U CN203951172 U CN 203951172U CN 201420286604 U CN201420286604 U CN 201420286604U CN 203951172 U CN203951172 U CN 203951172U
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- China
- Prior art keywords
- ntc
- paster
- thermistor
- lithium battery
- protection board
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of lithium battery protection board circuit based on NTC paster thermistor element, comprise charge circuit and discharge loop, also comprise BQ20Z75 type control chip, a plurality of Resistor-Capacitor Units, a plurality of switch mosfet devices and PTC thermistor, described BQ20Z75 type control chip detects cell voltage and loop current by a plurality of described Resistor-Capacitor Units, and by a plurality of described switch mosfet devices, control conducting and the shutoff of described charge circuit and described discharge loop, described PTC thermistor is series between a plurality of described capacitance resistance wares and battery, described PTC thermistor adopts NTC paster.The utility model is a kind of lithium battery protection board circuit based on NTC paster thermistor element, substitutes plug-in type NTC thermistor can save production and processing man-hour with paster NTC thermistor; There is displacement in deduction and exemption plug-in type NTC thermistor contact; There is line short in deduction and exemption; There is displacement and fracture in deduction and exemption, reduces artificial damage probability.
Description
Technical field
The utility model relates to a kind of lithium battery circuit, particularly relates to a kind of lithium battery protection board circuit based on NTC paster thermistor element.
Background technology
SMT paster refers to the abbreviation of the series of processes flow process of processing on pcb basis, and SMT is surface installation technique (surface mounting technology), is most popular a kind of technology and technique in current Electronic Assemblies industry.Electronic circuit surface installation technique, is called surface mount or surface mounting technology.It is a kind ofly will without pin or short leg surface-assembled components and parts, (be called for short SMC/SMD, Chinese claims sheet components and parts) be arranged on printed circuit board (surface or the surface of other substrate on, by the methods such as reflow welding or the immersed solder circuit load technology of welding assembly in addition.
The electronic product of our use is all to add various electric capacity by pcb under normal conditions, and the electronic devices and components such as resistance form by the electric circuit diagram design of design, so panoramic electrical equipment needs various smt paster processing technology to process.
--> part mounts, and----> divides plate to SMT basic technology inscape: paste solder printing in >AOI optical detection--> maintenance--in > reflow soldering.
The advantage of SMT paster processing: packaging density is high, electronic product volume is little, lightweight, the volume and weight of surface mount elements only has 1/10 left and right of traditional inserting element, after general employing SMT, electronic product volume-diminished 40%～60%, weight saving 60%～80%.Reliability is high, vibration resistance is strong.Welding point defect rate is low.High frequency characteristics is good.Electromagnetism and radio frequency interference have been reduced.Easily be automated, enhance productivity.Reduce costs and reach 30%～50%.Save material, the energy, equipment, manpower, time etc.
The complexity of the technological process of processing just because of smt paster, so there is the factory of a lot of smt paster processing, specialty is done the processing of smt paster, in Shenzhen, has benefited from the flourish of electron trade, smt paster has just been processed into the prosperity of an industry.
In conventional art, PACK intelligent power Management IC temperature detection sensor NTC thermistor is manual card formula, and then artificial welding is attached to thermistor contact in battery core, finally with heat-conducting glue, fixes.Such design is at present popular, if but be used in NTC paster can make lithium battery protection board circuit have more advantage in the situation that physical dimension is satisfied.
Utility model content
The purpose of this utility model is that a kind of lithium battery protection board circuit based on NTC paster thermistor element is provided in order to address the above problem.
The utility model is achieved through the following technical solutions:
A kind of lithium battery protection board circuit based on NTC paster thermistor element, comprise charge circuit and discharge loop, also comprise BQ20Z75 type control chip, a plurality of Resistor-Capacitor Units, a plurality of switch mosfet devices and PTC thermistor, described BQ20Z75 type control chip detects cell voltage and loop current by a plurality of described Resistor-Capacitor Units, and by a plurality of described switch mosfet devices, control conducting and the shutoff of described charge circuit and described discharge loop, described PTC thermistor is series between a plurality of described capacitance resistance wares and battery, described PTC thermistor adopts NTC paster.
Particularly, a plurality of described capacitance resistance wares comprise 30 resistance and 23 electric capacity.
Further, described switch mosfet device is four.
Further, described lithium battery protection board circuit also comprises four diodes, two voltage stabilizing didoes, fuse and potentiometers.
The beneficial effects of the utility model are:
The utility model is a kind of lithium battery protection board circuit based on NTC paster thermistor element, substitutes plug-in type NTC thermistor produced following advantage with paster NTC thermistor:
1, save production and processing man-hour;
2, there is displacement in deduction and exemption plug-in type NTC thermistor contact;
3, there is line short in deduction and exemption;
4, there is displacement and fracture in deduction and exemption, reduces artificial damage probability.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the lithium battery protection board circuit of the utility model based on NTC paster thermistor element.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail:
As shown in Figure 1, the utility model is a kind of lithium battery protection board circuit based on NTC paster thermistor element, comprise charge circuit and discharge loop, also comprise BQ20Z75 type control chip, a plurality of Resistor-Capacitor Units, a plurality of switch mosfet devices and PTC thermistor, described BQ20Z75 type control chip detects cell voltage and loop current by a plurality of described Resistor-Capacitor Units, and by a plurality of described switch mosfet devices, control conducting and the shutoff of described charge circuit and described discharge loop, described PTC thermistor is series between a plurality of described capacitance resistance wares and battery, described PTC thermistor adopts NTC paster.A plurality of described capacitance resistance wares comprise 30 resistance and 23 electric capacity.Described switch mosfet device is four.Described lithium battery protection board circuit also comprises four diodes, two voltage stabilizing didoes, fuse and potentiometers.
Use paster NTC thermistor can realize direct SMT paster, simple traditional artificial welding, thus shortened the machining period of manufacturing.Avoid plug-in type NTC thermistor contact to occur displacement, as NTC thermistor contact is displaced on heater members or around, thereby make managing electric quantity IC detected temperatures occur relatively large deviation, serious appearance mistake.Avoid occurring line short, as NTC thermistor supplied materials or add and occur damaged naked copper man-hour, be easy to be connected with some the device short circuit on pcb board since like this, be easy to like this damage pcb board or battery core, serious words have accident potential.Avoid NTC to occur fracture, as NTC thermistor supplied materials or add and occur fracture man-hour, thereby cause managing electric quantity IC temperature detection mistake.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within being all included in protection scope of the present invention.
Claims (4)
1. the lithium battery protection board circuit based on NTC paster thermistor element, comprise charge circuit and discharge loop, it is characterized in that: also comprise BQ20Z75 type control chip, a plurality of Resistor-Capacitor Units, a plurality of switch mosfet devices and PTC thermistor, described BQ20Z75 type control chip detects cell voltage and loop current by a plurality of described Resistor-Capacitor Units, and by a plurality of described switch mosfet devices, control conducting and the shutoff of described charge circuit and described discharge loop, described PTC thermistor is series between a plurality of described capacitance resistance wares and battery, described PTC thermistor adopts NTC paster.
2. the lithium battery protection board circuit based on NTC paster thermistor element according to claim 1, is characterized in that: a plurality of described capacitance resistance wares comprise 30 resistance and 23 electric capacity.
3. the lithium battery protection board circuit based on NTC paster thermistor element according to claim 1, is characterized in that: described switch mosfet device is four.
4. the lithium battery protection board circuit based on NTC paster thermistor element according to claim 1, is characterized in that: described lithium battery protection board circuit also comprises four diodes, two voltage stabilizing didoes, fuse and potentiometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420286604.2U CN203951172U (en) | 2014-05-30 | 2014-05-30 | Lithium battery protection board circuit based on NTC paster thermistor element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420286604.2U CN203951172U (en) | 2014-05-30 | 2014-05-30 | Lithium battery protection board circuit based on NTC paster thermistor element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203951172U true CN203951172U (en) | 2014-11-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420286604.2U Expired - Fee Related CN203951172U (en) | 2014-05-30 | 2014-05-30 | Lithium battery protection board circuit based on NTC paster thermistor element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203951172U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300507A (en) * | 2014-10-30 | 2015-01-21 | 成都艾塔科技有限公司 | Lithium battery guard plate circuit based on NTC patch thermistor elements |
| CN104362597A (en) * | 2014-11-20 | 2015-02-18 | 成都群侠科技有限公司 | Lithium battery protection panel circuit based on NTC surface-mounted device thermistor elements |
| CN105958568A (en) * | 2016-05-17 | 2016-09-21 | 福建万众百源实业有限公司 | Battery intelligent identification and management circuit |
-
2014
- 2014-05-30 CN CN201420286604.2U patent/CN203951172U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300507A (en) * | 2014-10-30 | 2015-01-21 | 成都艾塔科技有限公司 | Lithium battery guard plate circuit based on NTC patch thermistor elements |
| CN104362597A (en) * | 2014-11-20 | 2015-02-18 | 成都群侠科技有限公司 | Lithium battery protection panel circuit based on NTC surface-mounted device thermistor elements |
| CN105958568A (en) * | 2016-05-17 | 2016-09-21 | 福建万众百源实业有限公司 | Battery intelligent identification and management circuit |
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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: 20141119 Termination date: 20170530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |