CN204809351U - Lithium battery protection board based on voltage limiting steady voltage - Google Patents
Lithium battery protection board based on voltage limiting steady voltage Download PDFInfo
- Publication number
- CN204809351U CN204809351U CN201520387888.9U CN201520387888U CN204809351U CN 204809351 U CN204809351 U CN 204809351U CN 201520387888 U CN201520387888 U CN 201520387888U CN 204809351 U CN204809351 U CN 204809351U
- Authority
- CN
- China
- Prior art keywords
- circuit
- battery
- voltage
- voltage stabilizing
- sampling circuit
- Prior art date
- 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
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 28
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 25
- 230000005669 field effect Effects 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Secondary Cells (AREA)
- Protection Of Static Devices (AREA)
Abstract
The utility model belongs to the technical field of the lithium battery manufacturing technique and specifically relates to a lithium battery protection board based on voltage limiting steady voltage is equipped with the protection shield main part that is with low costs, rational in infrastructure, can prevent effectively that the lithium cell from organizing to fill to overflow be equipped with current sampling circuit, voltage sampling circuit, voltage stabilizing circuit, PTC on its characterized in that protection shield and overflow the excess temperature protection circuit, wherein current sampling circuit and voltage sampling circuit respectively with wait that it is connected to detect the battery, voltage stabilizing circuit and battery cell establish ties, voltage stabilizing circuit includes field effect transistor and TL431 chip circuit, wherein field effect transistor's base links to each other with the TL431 chip circuit, the drain electrode links to each other with the battery negative pole, the source electrode links to each other with the anodal of battery, the both ends of TL431 chip circuit link to each other with battery both ends, compared with the prior art, the utility model, has the advantage that rational in infrastructure, easy and simple to handle, safe and reliable etc. Is showing.
Description
Technical field:
The utility model relates to lithium battery manufacturing technology field, and specifically a kind of cost is low, rational in infrastructure, can effectively prevent lithium battery group from overcharging the lithium battery protection board based on pressure limiting voltage stabilizing of overcurrent.
Background technology:
Lithium battery is because having the advantages such as storage power density is high, flying power is strong, and be widely used with on digital product, in the recent period, lithium battery group is applied to the energy storage in electric vehicle and power station.But lithium battery in use needs to prevent from overcharging, crossing and put, otherwise the useful life of lithium battery group has a greatly reduced quality, and can unsafe factor be produced, in the lithium battery group course of work, can heat be produced, heat cannot be discharged in time and will be caused battery set charge/discharge decrease in efficiency, and can damage battery pack.
Summary of the invention:
The utility model, for the shortcoming and defect of prior art, proposes a kind of cost low, rational in infrastructure, can effectively prevent lithium battery group from overcharging the lithium battery protection board based on pressure limiting voltage stabilizing of overcurrent.
The utility model can be reached by following measures:
A kind of lithium battery protection board based on pressure limiting voltage stabilizing, be provided with baffle main body, it is characterized in that baffle is provided with current sampling circuit, voltage sampling circuit, voltage stabilizing circuit, PTC excess-current excess-temperature protective circuit, wherein current sampling circuit and voltage sampling circuit are connected with battery to be detected respectively, voltage stabilizing circuit is connected with cell, voltage stabilizing circuit comprises field effect transistor and TL431 chip circuit, wherein the base stage of field effect transistor is connected with TL431 chip circuit, drain electrode is connected with battery cathode, source electrode is connected with the positive pole of battery, the two ends of described TL431 chip circuit are connected with battery two ends.
PTC excess-current excess-temperature protective circuit described in the utility model and sensitive switch and serial battery, due to PTC resistance unit at an elevated temperature resistance increase, series loop resistance can be improved when overheated, play a protective role.
The utility model is also provided with microcontroller chip, and microcontroller chip is connected with sensitive switch, current sampling circuit, voltage sampling circuit respectively, for acquisition device running parameter and realize relevant control.
The utility model in use; current sampling circuit and voltage sampling circuit gather the current/voltage value of current monolithic battery; and return sampled value to microcontroller chip; microcontroller chip is by the electric current that returns, the access of magnitude of voltage control PTC excess-current excess-temperature protective circuit or disconnect battery charging and discharging loop; simultaneously voltage stabilizing circuit can play the effect of voltage stabilizing pressure limiting in battery charging process, thus avoid many Battery packs to charge existing under-voltage, the situation such as to overcharge.
The utility model compared with prior art, has the significant advantages such as rational in infrastructure, easy and simple to handle, safe and reliable.
Accompanying drawing illustrates:
Accompanying drawing 1 is structured flowchart of the present utility model.
Reference numeral: current sampling circuit 1, voltage sampling circuit 2, voltage stabilizing circuit 3, PTC excess-current excess-temperature protective circuit 4, battery to be detected 5, sensitive switch 6, microcontroller chip 7.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the utility model proposes a kind of lithium battery protection board based on pressure limiting voltage stabilizing, be provided with baffle main body, it is characterized in that baffle is provided with current sampling circuit 1, voltage sampling circuit 2, voltage stabilizing circuit 3, PTC excess-current excess-temperature protective circuit 4, wherein current sampling circuit 1 and voltage sampling circuit 2 are connected with battery 5 to be detected respectively, voltage stabilizing circuit 3 is connected with cell 5, voltage stabilizing circuit 3 comprises field effect transistor and TL431 chip circuit, wherein the base stage of field effect transistor is connected with TL431 chip circuit, drain electrode is connected with battery cathode, source electrode is connected with the positive pole of battery, the two ends of described TL431 chip circuit are connected with battery two ends.
PTC excess-current excess-temperature protective circuit 4 described in the utility model is connected with sensitive switch 6 and battery 5, due to the resistance increase at an elevated temperature of PTC resistance unit, can improve series loop resistance, play a protective role when overheated.
The utility model is also provided with microcontroller chip 7, and microcontroller chip 7 is connected with sensitive switch 6, current sampling circuit 1, voltage sampling circuit 2 respectively, for acquisition device running parameter and realize relevant control.
The utility model in use; current sampling circuit 1 and voltage sampling circuit 2 gather the current/voltage value of current monolithic battery; and return sampled value to microcontroller chip 7; microcontroller chip 7 is accessed by the electric current that returns, magnitude of voltage control PTC excess-current excess-temperature protective circuit 4 or is disconnected battery charging and discharging loop; simultaneously voltage stabilizing circuit can play the effect of voltage stabilizing pressure limiting in battery charging process, thus avoid many Battery packs to charge existing under-voltage, the situation such as to overcharge.
The utility model compared with prior art, has the significant advantages such as rational in infrastructure, easy and simple to handle, safe and reliable.
Claims (3)
1. the lithium battery protection board based on pressure limiting voltage stabilizing, be provided with baffle main body, it is characterized in that baffle is provided with current sampling circuit, voltage sampling circuit, voltage stabilizing circuit, PTC excess-current excess-temperature protective circuit, wherein current sampling circuit and voltage sampling circuit are connected with battery to be detected respectively, voltage stabilizing circuit is connected with cell, voltage stabilizing circuit comprises field effect transistor and TL431 chip circuit, wherein the base stage of field effect transistor is connected with TL431 chip circuit, drain electrode is connected with battery cathode, source electrode is connected with the positive pole of battery, the two ends of described TL431 chip circuit are connected with battery two ends.
2. a kind of lithium battery protection board based on pressure limiting voltage stabilizing according to claim 1, is characterized in that described PTC excess-current excess-temperature protective circuit and sensitive switch and serial battery.
3. a kind of lithium battery protection board based on pressure limiting voltage stabilizing according to claim 1, it is characterized in that also being provided with microcontroller chip, microcontroller chip is connected with sensitive switch, current sampling circuit, voltage sampling circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387888.9U CN204809351U (en) | 2015-06-09 | 2015-06-09 | Lithium battery protection board based on voltage limiting steady voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387888.9U CN204809351U (en) | 2015-06-09 | 2015-06-09 | Lithium battery protection board based on voltage limiting steady voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204809351U true CN204809351U (en) | 2015-11-25 |
Family
ID=54594126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520387888.9U Expired - Fee Related CN204809351U (en) | 2015-06-09 | 2015-06-09 | Lithium battery protection board based on voltage limiting steady voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204809351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253380A (en) * | 2016-08-10 | 2016-12-21 | 合肥国盛电池科技有限公司 | Multiple serial lithium battery group protection device |
-
2015
- 2015-06-09 CN CN201520387888.9U patent/CN204809351U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253380A (en) * | 2016-08-10 | 2016-12-21 | 合肥国盛电池科技有限公司 | Multiple serial lithium battery group protection 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20160609 |