CN101771177A - Zero-power protective plate of lithium battery - Google Patents
Zero-power protective plate of lithium battery Download PDFInfo
- Publication number
- CN101771177A CN101771177A CN201010109732A CN201010109732A CN101771177A CN 101771177 A CN101771177 A CN 101771177A CN 201010109732 A CN201010109732 A CN 201010109732A CN 201010109732 A CN201010109732 A CN 201010109732A CN 101771177 A CN101771177 A CN 101771177A
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- lithium battery
- zero
- battery
- mcu
- protective plate
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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
Abstract
The invention discloses a zero-power protective plate of a lithium battery, which comprises a PCB plate, an LED lamp, a battery contact chip, a 16-bit MCU function control and communication part, an MOS switch control loop, a switch, a temperature protection circuit part and a battery power display circuit part. The zero-power protective plate is characterized in that the LED lamp, the 16-bit MCU function control and communication part and the MOS switch control loop are respectively fixed on the PCB plate by welding; the PCB plate is fixed on the shell of a battery pack; one end of the battery contact chip is fixed on the PCB plate, and the other end thereof is connected with the phase of a single lithium battery and is connected with four pole pieces on the shell by inner leads. The zero-power protective plate has the advantages that the problem of high self energy consumption of mainstream multi-string lithium battery protective plates in the current market is solved, thereby enabling the lithium battery to almost reach zero power under the condition of nonuse and greatly prolonging the service life of the lithium battery.
Description
Technical field
The present invention relates to a kind of zero-power protective plate of lithium battery, belong to the small household appliance technical field.
Background technology
The fast development of electric tool of lithium battery in the market is with universal; make lithium battery charger and li-ion cell protection strip come huge business opportunity. the development of domestic present lithium electric protection plate is very fast; the production status of li-ion cell protection plate is differed, and the problem that causes the later stage to manifest also gets more and more.
The li-ion cell protection plate be in order effectively to protect lithium battery, and in operate as normal whether whether its baffle no matter lithium battery and machine supporting, all will consume the electric weight of lithium battery itself.If this in the running consumption of machine is normal; but machine is when out of service; may be that cell voltage was original just very low after machine had moved; do not carry out charger timely; the energy of that li-ion cell protection plate autophage will consume the remaining electric weight of lithium battery itself very soon; make its voltage very low, cause battery to damage, can not charge and to reuse.In order to address this problem, promptly produce product of the present invention.
Summary of the invention
The purpose of this invention is to provide a kind of zero-power protective plate of lithium battery; solve the big problem of self-energy consumption of the multi-series lithium battery baffle of main flow in the market; make lithium battery under obsolete situation, almost reach zero-power, prolong the useful life of lithium battery greatly.
The objective of the invention is to be achieved through the following technical solutions: a kind of zero-power li-ion cell protection plate comprises pcb board, LED lamp, battery contact piece, the control of 16 MCU functions and communication and MOS switch control circuit, switch, temperature protection circuit part, electric weight display circuit part.It is characterized in that: LED lamp, the control of 16 MCU functions and communication and switch mosfet control loop are all by welding fixedly on the pcb board; pcb board is fixed on above the battery pack case; battery contact piece one end is fixed on the pcb board; the other end is connected with the single-unit lithium battery; and be connected with four pole pieces on the housing by inner lead, to reach the protective effect that is connected and plays lithium battery of lithium battery and protection.
Described four pole pieces are respectively: positive pole, negative pole, the temperature control utmost point, the communication port utmost point.
Described LED lamp can show the state of lithium battery voltage.
Described 16 MCU functions control partly comprises with communication: the on off state of 1) controlling discharge MOSFET by 16 MCU, judge battery operated state by the variation of discharge voltage and discharging current, and by detecting the different magnitude of voltage of power brick, and adjust and whether export.
2) 16 MCU exist by detecting the state whether discharging current is arranged, if all be not in discharge condition in a time decided at the higher level but not officially announced, MCU is defaulted as holding state so, and MCU will turn-off all powered battery output, comprise the power supply of MCU itself, to reach the purpose of zero-power.
Described MOS switch control circuit is that the loop of 16 MCU detection batteries is MOSFET control, because 16 MCU are to take a sample by resistance to get when carrying out the single battery detection, this sample circuit autophage energy is uncontrolled, carry out switch so on control loop, add MOSFET, in the needs sampling, just the MOSFET pipe is opened, otherwise then close, can reduce the power consumption of its circuit itself greatly.
Described temperature protection circuit partly by the sampling of NTC, changes to detect the power brick temperature inside, and passes through the computing judgement of 16 MCU, and the state of control charging and discharging lithium battery prevents power brick dangerous or damage because of super-charge super-discharge produces.
Described electric weight display circuit part when discharging and recharging, also by the calculating of 16 MCU, can show the state of cell voltage by sample circuit by the li-ion cell protection plate intuitively, gives the user directly sense organ.
Advantage of the present invention is: owing to adopted technique scheme; solve the big problem of self-energy consumption of the multi-series lithium battery baffle of main flow in the market; make lithium battery under obsolete situation, almost reach zero-power, prolong the useful life of lithium battery greatly.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structure block diagram of the present invention.
Fig. 2 is the structural representation of pole piece of the present invention.
Among the figure, 1.PCB plate, 2. battery contact piece, 3. battery, 4.16 MCU functions control and communication part, 5. temperature protection circuit part, 6.MOS switch control circuit, 7. switch, 8.LED lamp, 9, pole piece.
Embodiment
With reference to Fig. 1, Fig. 2, the present invention includes pcb board 1, LED lamp 8,2,16 MCU function controls of battery contact piece and communication part 4 and MOS switch control circuit 6, switch 7, temperature protection circuit part 5, electric weight display circuit part.The electronic component of the control of 8,16 MCU functions of LED lamp and communication part 4 and MOS switch control circuit and other periphery is all by welding fixedly on the pcb board; pcb board 1 is fixed on above the battery pack case; battery contact piece 2 one ends are fixed on the pcb board 1; the other end is connected with single-unit lithium battery 3; and be connected with four pole pieces 9 on the housing by inner lead, to reach the protective effect that is connected and plays lithium battery of lithium battery and protection.
Described four pole pieces 9 are respectively: positive pole, negative pole, the temperature control utmost point, the communication port utmost point.
Described LED lamp 8 can show the state of lithium battery voltage.
Described 16 MCU functions control and communication partly 4 comprise 1) on off state by 16 MCU control discharge MOSFET, judge battery operated state by the variation of discharge voltage and discharging current, and by detecting the different magnitude of voltage of power brick, and adjust and whether export.
2) 16 MCU exist by detecting the state whether discharging current is arranged, if in a time decided at the higher level but not officially announced, all be not in discharge condition, 16 MCU are defaulted as holding state so, 16 MCU will turn-off all powered battery output, comprise the power supply of 16 MCU itself, to reach the purpose of zero-power.
(annotate: the self discharge of lithium battery self is not in the category of considering)
Whether described 16 MCU have the state of discharge stream to exist by detecting the li-ion cell protection plate, are to realize by the switch of 16 MCU control discharge MOSFET.
Described MOS switch control circuit is that the loop of 16 MCU detection batteries is MOSFET control, because 16 MCU are to take a sample by resistance to get when carrying out the single battery detection, this sample circuit autophage energy is uncontrolled, carry out switch so on control loop, add MOSFET, in the needs sampling, just the MOSFET pipe is opened, otherwise then close, can reduce the power consumption of its circuit itself greatly.
Described temperature protection circuit partly by the sampling of NTC, changes to detect the power brick temperature inside, and passes through the computing judgement of 16 MCU, and the state of control charging and discharging lithium battery prevents power brick dangerous or damage because of super-charge super-discharge produces.
Described electric weight display circuit part when discharging and recharging, also by the calculating of 16 MCU, can show the state of cell voltage by sample circuit by the li-ion cell protection plate intuitively, gives the user directly sense organ.
Claims (3)
1. a zero-power protective plate of lithium battery comprises PCB, LED lamp, battery contact piece, the control of 16 MCU functions and communication part and MOS switch control circuit, switch, temperature protection circuit part, electric weight display circuit part; It is characterized in that: LED lamp, the control of 16 MCU functions and communication part and switch mosfet control loop are all by welding fixedly on the pcb board, pcb board is fixed on above the battery pack case, battery contact piece one end is fixed on the pcb board, the other end is connected with the single-unit lithium battery, and is connected with four pole pieces on the housing by inner lead.
2. zero-power protective plate of lithium battery according to claim 1 is characterized in that: described four pole pieces are respectively: positive pole, negative pole, the temperature control utmost point, the communication port utmost point.
3. zero-power protective plate of lithium battery according to claim 1 is characterized in that: whether described 16 MCU have the state of discharge stream to exist by detecting the li-ion cell protection plate, are to realize by the switch of 16 MCU control discharge MOSFET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010109732A CN101771177A (en) | 2010-01-31 | 2010-01-31 | Zero-power protective plate of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010109732A CN101771177A (en) | 2010-01-31 | 2010-01-31 | Zero-power protective plate of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101771177A true CN101771177A (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010109732A Pending CN101771177A (en) | 2010-01-31 | 2010-01-31 | Zero-power protective plate of lithium battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN101771177A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201760A (en) * | 2014-09-21 | 2014-12-10 | 戴国群 | Wall-mounted household solar energy storage power supply |
-
2010
- 2010-01-31 CN CN201010109732A patent/CN101771177A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201760A (en) * | 2014-09-21 | 2014-12-10 | 戴国群 | Wall-mounted household solar energy storage power supply |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100707 |