CN203071565U - Power saving circuit for lithium battery protection board - Google Patents
Power saving circuit for lithium battery protection board Download PDFInfo
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- CN203071565U CN203071565U CN 201320047746 CN201320047746U CN203071565U CN 203071565 U CN203071565 U CN 203071565U CN 201320047746 CN201320047746 CN 201320047746 CN 201320047746 U CN201320047746 U CN 201320047746U CN 203071565 U CN203071565 U CN 203071565U
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- triode
- diode
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- power saving
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Abstract
The utility model discloses a power saving circuit for a lithium battery protection board. The power saving circuit comprises a signal synthesis circuit and a power switch circuit, wherein the signal synthesis circuit is composed of a resistor R1, a resistor R2, a triode Q1, a triode Q2, a triode Q3, a diode D1, a diode D2 and a diode D3, and the power switch circuit is composed of a resistor R3, a triode Q4 and a PMOS tube Q5. When a charging loop or discharging loop is turned on, the power saving circuit is started so as to supply power to a power supply module; and a one-chip microcomputer begins working and sends a locking signal to the power saving circuit, and the protection board starts working. When the charging loop or discharging loop is turned off, the one-chip microcomputer sends an unlocking signal to the power saving circuit, the power saving circuit is closed, the protection board stops working, and zero current output of a lithium battery pack is realized. Thus, the purpose of reducing loss of electric energy is realized, and power saving circuit is convenient to use by a user.
Description
Technical field
The utility model relates to a kind of li-ion cell protection plate power-saving circuit, belongs to the power-saving circuit technical field.
Background technology
As a kind of novel energy, lithium battery has energy density height, single-unit voltage height, pollution-free, long service life, self discharge is little, charging rate is fast and advantage such as memory-less effect, thereby is widely used in people's the production, life.But also there is fatal shortcoming in it, namely poor stability, can blast, simultaneously, lithium battery is not supported super-high-current discharge, therefore need be specifically designed to and prevent that battery is by the protection circuit of super-charge super-discharge electricity.
Present li-ion cell protection plate mainly contains based on specialized lithium battery protection chip with based on two kinds of forms of single-chip microcomputer; these chips need specific power supply apparatus and circuit to cooperate; not only when loaded work piece, can produce power consumption; also can consumes power when the lithium battery group does not have external load; can cause unnecessary energy loss in actual applications, make troubles to the user.
Summary of the invention
At the problem that above-mentioned prior art exists, the utility model provides a kind of li-ion cell protection plate power-saving circuit, can make the current zero output when not having external load of lithium battery group, reduces the loss of electric energy, is user-friendly to.
To achieve these goals, the technical solution adopted in the utility model is: a kind of li-ion cell protection plate power-saving circuit, comprise the synthetic and mains switch two-stage circuit of signal, signal synthesis circuit is made up of resistance R 1, resistance R 2, triode Q1, triode Q2, triode Q3, diode D1, diode D2 and diode D3, and power switch circuit is made up of resistance R 3, triode Q4 and PMOS pipe Q5; One end of resistance R 1 is connected with the anodal B+ of lithium battery group, and the other end is connected with the collector electrode of triode Q1, the collector electrode of triode Q2 and the collector electrode of triode Q3; The base stage of triode Q1 meets discharge negative pole OUT-, the base stage of triode Q2 meets the anodal C+ of charging, the base stage of triode Q3 meets the control pin P1.1 of single-chip microcomputer, the emitter of triode Q1 connects the anode of diode D1, the emitter of triode Q2 connects the anode of diode D2, the emitter of triode Q3 connects the anode of diode D3, and the negative electrode of the negative electrode of diode D1, diode D2 and the negative electrode of diode D3 all are connected with the base stage of triode Q4 in the power switch circuit, and by resistance R 2 ground connection; The collector electrode of triode Q4 meets the anodal B+ of lithium battery group by resistance R 3; the grounded emitter of triode Q4; the collector electrode of triode Q4 is connected with the grid of PMOS pipe Q5; the source electrode of PMOS pipe Q5 meets the anodal B+ of lithium battery group, and the drain electrode output current of PMOS pipe Q5 is given the power supply of li-ion cell protection plate power module.
Operation principle: as shown in Figure 3, after the charge or discharge loop was connected, high voltage appearred in charge anodal C+ or discharge negative pole OUT-; this power-saving circuit starts, and to the power module power supply, single-chip microcomputer is started working; and send locking signal, baffle work for this power-saving circuit.After the charge or discharge loop disconnected, single-chip microcomputer sent unlocking signal for this power-saving circuit, and this power-saving circuit is closed, and all devices quit work on the baffle, and the output of lithium battery group electric current is approximately zero.
The beneficial effects of the utility model are: except being operated in charging, discharge condition; all devices of this circuit self are operated in inactive state; the input of the module of cutting off the electricity supply; make power module and late-class circuit thereof cut off the power supply; the whole protecting plate is similar to zero-power; finally make the current zero output when not having external load of lithium battery group, reduce the loss of electric energy, be user-friendly to.
Description of drawings
Fig. 1 is electric theory diagram of the present utility model;
Fig. 2 is circuit diagram of the present utility model;
Fig. 3 is used for the schematic block circuit diagram of li-ion cell protection plate for the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, this li-ion cell protection plate power-saving circuit comprises the synthetic and mains switch two-stage circuit of signal, signal synthesis circuit is made up of resistance R 1, resistance R 2, triode Q1, triode Q2, triode Q3, diode D1, diode D2 and diode D3, and power switch circuit is made up of resistance R 3, triode Q4 and PMOS pipe Q5; One end of resistance R 1 is connected with the anodal B+ of lithium battery group, and the other end is connected with the collector electrode of triode Q1, the collector electrode of triode Q2 and the collector electrode of triode Q3; The base stage of triode Q1 meets discharge negative pole OUT-, the base stage of triode Q2 meets the anodal C+ of charging, the base stage of triode Q3 meets the control pin P1.1 of single-chip microcomputer, the emitter of triode Q1 connects the anode of diode D1, the emitter of triode Q2 connects the anode of diode D2, the emitter of triode Q3 connects the anode of diode D3, and the negative electrode of the negative electrode of diode D1, diode D2 and the negative electrode of diode D3 all are connected with the base stage of triode Q4 in the power switch circuit, and by resistance R 2 ground connection; The collector electrode of triode Q4 meets the anodal B+ of lithium battery group by resistance R 3; the grounded emitter of triode Q4; the collector electrode of triode Q4 is connected with the grid of PMOS pipe Q5; the source electrode of PMOS pipe Q5 meets the anodal B+ of lithium battery group, and the drain electrode output current of PMOS pipe Q5 is given the power supply of li-ion cell protection plate power module.
As Fig. 3 and shown in Figure 2; part as li-ion cell protection plate circuit; the utility model acts on the previous stage of baffle power module; form an enabling signal; be used for starting mains switch, behind the power connection, single-chip microcomputer is started working; the locking signal combiner circuit is guaranteed the operate as normal of power module.Particularly, when discharge loop was connected, discharge negative pole OUT-end was sent high voltage here, triode Q1 conducting, and diode D1 conducting, triode Q4 conducting, the power supply of baffle power module is given in PMOS pipe Q5 conducting; When charge circuit was connected, C+ brought in high voltage, triode Q2 conducting, and diode D2 conducting, triode Q4 conducting, the power supply of baffle power module is given in PMOS pipe Q5 conducting; When below wherein a kind of situation occurs, all can start power module, to the single-chip microcomputer power supply, after single-chip microcomputer starts, put high level for pin P1.1, triode Q3 conducting, diode D3 conducting, locking triode Q4 is in conducting state; When charging and discharge loop when all disconnecting, single-chip microcomputer is put low level to pin P1.1, and triode Q4 ends; PMOS pipe Q5 stops power supply output, makes power module and late-class circuit thereof cut off the power supply, and the whole protecting plate is similar to zero-power; reduce the loss of electric energy, be user-friendly to.
Claims (1)
1. li-ion cell protection plate power-saving circuit, it is characterized in that, comprise the synthetic and mains switch two-stage circuit of signal, signal synthesis circuit is made up of resistance R 1, resistance R 2, triode Q1, triode Q2, triode Q3, diode D1, diode D2 and diode D3, and power switch circuit is made up of resistance R 3, triode Q4 and PMOS pipe Q5; One end of resistance R 1 is connected with the anodal B+ of lithium battery group, and the other end is connected with the collector electrode of triode Q1, the collector electrode of triode Q2 and the collector electrode of triode Q3; The base stage of triode Q1 meets discharge negative pole OUT-, the base stage of triode Q2 meets the anodal C+ of charging, the base stage of triode Q3 meets the control pin P1.1 of single-chip microcomputer, the emitter of triode Q1 connects the anode of diode D1, the emitter of triode Q2 connects the anode of diode D2, the emitter of triode Q3 connects the anode of diode D3, and the negative electrode of the negative electrode of diode D1, diode D2 and the negative electrode of diode D3 all are connected with the base stage of triode Q4 in the power switch circuit, and by resistance R 2 ground connection; The collector electrode of triode Q4 meets the anodal B+ of lithium battery group by resistance R 3; the grounded emitter of triode Q4; the collector electrode of triode Q4 is connected with the grid of PMOS pipe Q5; the source electrode of PMOS pipe Q5 meets the anodal B+ of lithium battery group, and the drain electrode output current of PMOS pipe Q5 is given the power supply of li-ion cell protection plate power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320047746 CN203071565U (en) | 2013-01-29 | 2013-01-29 | Power saving circuit for lithium battery protection board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320047746 CN203071565U (en) | 2013-01-29 | 2013-01-29 | Power saving circuit for lithium battery protection board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071565U true CN203071565U (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320047746 Expired - Fee Related CN203071565U (en) | 2013-01-29 | 2013-01-29 | Power saving circuit for lithium battery protection board |
Country Status (1)
| Country | Link |
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| CN (1) | CN203071565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803688A (en) * | 2015-11-26 | 2017-06-06 | 衡阳市利美电瓶车制造有限责任公司 | A kind of power-saving circuit |
-
2013
- 2013-01-29 CN CN 201320047746 patent/CN203071565U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803688A (en) * | 2015-11-26 | 2017-06-06 | 衡阳市利美电瓶车制造有限责任公司 | A kind of power-saving circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI NANFUHUA TRADING CO., LTD. Free format text: FORMER OWNER: XUZHOU LINENG ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20141106 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Du Xiaotong Inventor before: Ge Chongju Inventor before: Shen Xuefeng Inventor before: Cai Lingzhong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GE CHONGJU SHEN XUEFENG CAI LINGZHONG TO: ZHU XIAOTONG Free format text: CORRECT: ADDRESS; FROM: 221000 XUZHOU, JIANGSU PROVINCE TO: 200127 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141106 Address after: 200127 Shanghai Pudong New Area City asan Road No. 613 building 11 building C Room 303 Patentee after: Shanghai South China Trade Co., Ltd. Address before: 221000, room 8, building 23, student Pioneer Park, 8101 North Beijing Road, Copper Mt. District, Xuzhou, Jiangsu Patentee before: Xuzhou LINENG Electronic Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20190129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |