CN204809856U - Low -power consumption lithium battery protection device - Google Patents
Low -power consumption lithium battery protection device Download PDFInfo
- Publication number
- CN204809856U CN204809856U CN201520387889.3U CN201520387889U CN204809856U CN 204809856 U CN204809856 U CN 204809856U CN 201520387889 U CN201520387889 U CN 201520387889U CN 204809856 U CN204809856 U CN 204809856U
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- China
- Prior art keywords
- circuit
- voltage
- sampling circuit
- battery
- low
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- 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
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- 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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a lithium battery manufacturing technical field, accuracy, the low low -power consumption lithium battery protection device of power consumption are detected to specific saying so one kind, are equipped with micro -control chip, current sampling circuit, voltage sampling circuit, its characterized in that still is equipped with filter circuit, and filter circuit is established ties by current -limiting resistor and condenser and constitutes, and filter circuit connects in parallel and is waiting that it just is connected with the micro -control chip to detect the battery both ends, and current sampling circuit and voltage sampling circuit's output is connected with filter circuit respectively, the utility model discloses current sampling circuit and voltage sampling circuit gather electric current, the magnitude of voltage of current battery measurement in -process, send into the micro -control chip after filter circuit handles, effectively reduce the burr, prevent the erroneous judgement, and voltage stabilizing circuit and A series of cells play voltage limiting steady voltage effect, fill to put equalizer circuit and through the charge -discharge difference that the equalizing resistance comes the different battery cell of balanced lithium cell inter block, compare with prior art, have the advantage that rational in infrastructure, with low costs, convenient to use etc. Is showing.
Description
Technical field:
The utility model relates to lithium battery manufacturing technology field, a kind ofly specifically to detect accurately, consume energy low-power consumption lithium cell protecting device that is low, working stability.
Background technology:
Lithium battery due to energy density high, cause there is potential safety hazard, specifically, lithium battery is when overcharging, electrolyte can be decomposed, the temperature and pressure of inside battery is made to increase, crossing under the state of putting, the electrolysis material of negative pole can melt and cause internal short-circuit, elevates the temperature, outside short circuit or electric current excessive time, due to the characteristic of high internal resistance, cause inside battery power consumption to increase, temperature also can rise, oxidation or the decomposition of electrolyte may be caused, cause service life of lithium battery to shorten.In addition, if lithium battery carries out excessive electric discharge, then electrolyte can be made to change, and thus the number of times of charging capable of circulation tails off, and affects the useful life of lithium battery.
Due to the problems referred to above, lithium battery in use must add protective circuit, and protective circuit requires to provide additives for overcharge protection, over, short-circuit protection and overcurrent protection.The power consumption of protective circuit should be as far as possible low, otherwise affect the flying power of lithium battery.
Summary of the invention:
The utility model for the shortcoming and defect of prior art, propose a kind ofly to detect accurately, consume energy low-power consumption lithium cell protecting device that is low, working stability.
The utility model can be reached by following measures:
A kind of low-power consumption lithium cell protecting device; be provided with microcontroller chip XDC13, current sampling circuit, voltage sampling circuit; it is characterized in that also being provided with filter circuit; filter circuit is composed in series by current-limiting resistance and capacitor; filter circuit is connected in parallel on battery two ends to be detected and is connected with microcontroller chip, and current sampling circuit is connected with filter circuit respectively with the output of voltage sampling circuit.
The utility model is also provided with the charge and discharge equalizing circuit be connected with microcontroller chip, is provided with equalizing resistance and sensitive switch in charge and discharge equalizing circuit, and charge and discharge equalizing circuit is connected in parallel on the two ends of battery to be detected, and the control end of sensitive switch is connected with microcontroller chip.
In the utility model, current sampling circuit adopts sampling resistor to realize, for obtaining current sampling data and sending into microcontroller chip.
Also be provided with the voltage stabilizing circuit with serial battery to be detected in the utility model, for pressure limiting voltage stabilizing, avoid voltage fluctuation or too high give battery to be detected bring harmful effect.
The utility model in use, current sampling circuit and voltage sampling circuit gather electric current, magnitude of voltage in present battery charge and discharge process, the information gathered sends into microcontroller chip after filter circuit process, effective reduction burr, prevents erroneous judgement, voltage stabilizing circuit and serial battery, play pressure limiting pressure stabilization function, charge and discharge equalizing circuit balances the discharge and recharge difference of different monomers battery in lithium battery group by equalizing resistance, thus effectively improves efficiency for charge-discharge, extends lithium battery useful life.
The utility model compared with prior art, have rational in infrastructure, cost is low, the significant advantage such as easy to use.
Accompanying drawing illustrates:
Accompanying drawing 1 is structured flowchart of the present utility model.
Reference numeral: microcontroller chip 1, current sampling circuit 2, voltage sampling circuit 3, filter circuit 4, charge and discharge equalizing circuit 5, battery 6, voltage stabilizing circuit 7.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in drawings; the utility model proposes a kind of low-power consumption lithium cell protecting device; be provided with microcontroller chip XDC131, current sampling circuit 2, voltage sampling circuit 3; it is characterized in that also being provided with filter circuit 4; filter circuit 4 is composed in series by current-limiting resistance and capacitor; filter circuit 4 is connected in parallel on battery 6 two ends to be detected and is connected with microcontroller chip 1, and current sampling circuit 2 is connected with filter circuit 4 respectively with the output of voltage sampling circuit 3.
The utility model is also provided with the charge and discharge equalizing circuit 5 be connected with microcontroller chip 1, is provided with equalizing resistance and sensitive switch in charge and discharge equalizing circuit 5, and charge and discharge equalizing circuit 5 is connected in parallel on the two ends of battery 6 to be detected, and the control end of sensitive switch is connected with microcontroller chip 1.
In the utility model, current sampling circuit 2 adopts sampling resistor to realize, for obtaining current sampling data and sending into microcontroller chip.
Also be provided with the voltage stabilizing circuit 7 with serial battery to be detected in the utility model, for pressure limiting voltage stabilizing, avoid voltage fluctuation or too high give battery to be detected bring harmful effect.
The utility model in use, current sampling circuit and voltage sampling circuit gather electric current, magnitude of voltage in present battery charge and discharge process, the information gathered sends into microcontroller chip after filter circuit process, effective reduction burr, prevents erroneous judgement, voltage stabilizing circuit and serial battery, play pressure limiting pressure stabilization function, charge and discharge equalizing circuit balances the discharge and recharge difference of different monomers battery in lithium battery group by equalizing resistance, thus effectively improves efficiency for charge-discharge, extends lithium battery useful life.
The utility model compared with prior art, have rational in infrastructure, cost is low, the significant advantage such as easy to use.
Claims (4)
1. a low-power consumption lithium cell protecting device; be provided with microcontroller chip XDC13, current sampling circuit, voltage sampling circuit; it is characterized in that also being provided with filter circuit; filter circuit is composed in series by current-limiting resistance and capacitor; filter circuit is connected in parallel on battery two ends to be detected and is connected with microcontroller chip, and current sampling circuit is connected with filter circuit respectively with the output of voltage sampling circuit.
2. a kind of low-power consumption lithium cell protecting device according to claim 1; it is characterized in that also being provided with the charge and discharge equalizing circuit be connected with microcontroller chip; equalizing resistance and sensitive switch is provided with in charge and discharge equalizing circuit; charge and discharge equalizing circuit is connected in parallel on the two ends of battery to be detected, and the control end of sensitive switch is connected with microcontroller chip.
3. a kind of low-power consumption lithium cell protecting device according to claim 1, is characterized in that current sampling circuit adopts sampling resistor to realize, for obtaining current sampling data and sending into microcontroller chip.
4. a kind of low-power consumption lithium cell protecting device according to claim 1, is characterized in that also being provided with the voltage stabilizing circuit with serial battery to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387889.3U CN204809856U (en) | 2015-06-09 | 2015-06-09 | Low -power consumption lithium battery protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387889.3U CN204809856U (en) | 2015-06-09 | 2015-06-09 | Low -power consumption lithium battery protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204809856U true CN204809856U (en) | 2015-11-25 |
Family
ID=54594620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520387889.3U Expired - Fee Related CN204809856U (en) | 2015-06-09 | 2015-06-09 | Low -power consumption lithium battery protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204809856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946680A (en) * | 2017-12-06 | 2018-04-20 | 合肥国盛电池科技有限公司 | Lithium battery group based on self-shield remote alarms |
-
2015
- 2015-06-09 CN CN201520387889.3U patent/CN204809856U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946680A (en) * | 2017-12-06 | 2018-04-20 | 合肥国盛电池科技有限公司 | Lithium battery group based on self-shield remote alarms |
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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: 20151125 Termination date: 20160609 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |