CN202150708U - Multi-mode charging device of cell driven switch - Google Patents
Multi-mode charging device of cell driven switch Download PDFInfo
- Publication number
- CN202150708U CN202150708U CN201020700990U CN201020700990U CN202150708U CN 202150708 U CN202150708 U CN 202150708U CN 201020700990 U CN201020700990 U CN 201020700990U CN 201020700990 U CN201020700990 U CN 201020700990U CN 202150708 U CN202150708 U CN 202150708U
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- voltage
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a multi-mode charging device of a cell driven switch, wherein the cell is utilized for charging driving, which prevents a human body from an accident caused by wrong touch. In addition, multiple charging modes are integrated, with a normal electronic, a corresponding charging mode can be selected according to different states of the cell, different charging prompts can be provided according to different charging modes, the charging modes include a trickle charging mode under a low temperature and under-voltage charging condition, a constant current constant voltage charging mode and a timing charging mode, protection functions such as cell overheating and severe under-voltage protection are possessed, and the multi-mode charging device of a cell driven switch is advantageous in that the cell is charged by a high precision standard, accidents are prevented such as spontaneous combustion and blast of the cell, etc.
Description
Technical field
The utility model belongs to the battery charge field, is specifically related to a kind of multi-mode charging device of battery-operated charge switch.
Background technology
Along with the development of current social, various electronic equipments are main with light carrying all, and the electronic equipment of various functions all might be can use whenever and wherever possible, thereby battery becomes its necessary part, and the charging method of battery is also arisen at the historic moment.Constantly there is high end cell special charger spare to release on the market; Also have liquid crystal, LCD product are used for the charging indication; But these dedicated devices and liquid crystal, LCD need huge auxiliary circuit to drive or carry out and can accomplish the Charge Management function; During actual application as charging, have excessive shortcoming at aspects such as material supplies, cost, volume, reliabilities, it utilizes multiple unconventional electronic devices and components can realize multiple charge mode and gives different charge promptings to different charge modes; And big multi-charger can't charge according to whether inserting battery, and human body then might meet accident because of the false touch charging end.
Summary of the invention
The technical problem that the utility model will solve provides a kind of charging device of gathering various modes; It utilizes battery to drive the switch of charging, and comprises functions such as the overheated and serious under-voltage protection of trickle charge, constant current charge, constant voltage charge, timing mode, battery under low temperature, the under-voltage charge condition.
The multi-mode charging device of this novel described battery-operated switch; It comprises power output end, charging port, first triode, cell voltage end and charge switch; Said charge switch is a MOS power tube, and its source electrode is connected charging port and power output end respectively with drain electrode, and grid connects the collector electrode of first triode; The base stage of first triode connects the cell voltage end of charging port, grounded emitter.
Said device also comprises voltage output end, photoelectrical coupler, current feedback terminal and the pressure feedback port, current control circuit and the voltage control circuit that connect successively, and said photoelectrical coupler connects power supply.
Said device also comprises a timing circuit, high temperature and serious under-voltage detection control circuit, second triode and the 3rd triode; The base stage of said second triode connects the timing output of timing circuit, and collector and emitter connects cell voltage end and ground end respectively; The base stage of said the 3rd triode connects high temperature and serious under-voltage detection control circuit, and collector and emitter connects cell voltage end and ground end respectively, and the temperature inductor of said high temperature and serious under-voltage detection control circuit places battery pack.
Said device comprises that also a low temperature detects control circuit, under-voltage control circuit and a small-power metal-oxide-semiconductor; Said small-power metal-oxide-semiconductor grid connects low temperature respectively and detects control circuit and under-voltage control circuit; Source electrode connects earth terminal and current control circuit respectively with drain electrode, and temperature inductor places battery pack in the low temperature detection control circuit.
Use this novel beneficial effect that can reach to be: to utilize conventional electronic devices and components then can switch the charge mode that adapts, give different charge promptings according to a tree name battery different state to different charge modes; It integrates trickle charge pattern, constant-current constant-voltage charging pattern, timing mode under low temperature, the under-voltage charge condition, battery is overheated and function such as serious under-voltage protection in one; And utilize battery to drive the switch of charging, avoid human body to meet accident because of false touch.
Below in conjunction with accompanying drawing and embodiment, the utility model is done further to specify:
Description of drawings
Fig. 1 is the physical circuit figure of the utility model.
Embodiment
As shown in Figure 1, the multi-mode charging device of the described battery-operated switch of the utility model, it comprises power output end, charging port, triode Q1 and charge switch VT1; Said charge switch VT1 is a MOS power tube, and its source electrode is connected charging port and power output end respectively with drain electrode, and grid connects the collector electrode of triode Q1; The base stage of triode Q1 connects the cell voltage end of charging port; Grounded emitter, battery-driven charging process: when connecting battery, battery provides voltage VB+ turn-on transistor Q1; And then conducting charge switch VT1, realize the conducting of charging main line; When taking out battery, cell voltage VB+ holds no-voltage and ends triode Q1, and then by charge switch VT1, realizes the disconnection of charging main line.
Said device also comprises the voltage output end Vcc, photoelectrical coupler U1, current feedback terminal and pressure feedback port, current control circuit and the voltage control circuit that connect successively; Said photoelectrical coupler U1 connects Switching Power Supply; It provides voltage by voltage output end Vcc, and changes according to the output voltage and the output current of the Signal-controlled switch power supply of each feedback end output.
Said device also comprises a voltage reference circuit; This circuit further comprises a reference voltage integrated circuit; Said voltage reference circuit provides control ratio voltage reference to control circuits at different levels by power output end Vcc power supply after voltage reference integrated circuit U2 voltage stabilizing.
Reference voltage integrated circuit in the said voltage reference circuit connects the reference edge of power output end, photoelectrical coupler and control circuits at different levels.
Voltage reference integrated circuit U3 in the said voltage control circuit, R10, R11 control output signal; When cell voltage during less than the constant voltage charge threshold voltage, voltage control circuit is controlled at power supply through pressure feedback port the voltage output value of a little higher than battery voltage value; When cell voltage during more than or equal to the constant voltage charge threshold voltage, voltage control circuit is locked to a constant voltage value through pressure feedback port with electric power output voltage, realizes the constant voltage charge process.
Said current control circuit is connected to current feedback terminal; When charging current is equal to or less than constant current value; The size of charging end negative pole VB-magnitude of voltage is equal to or less than the constant current reference voltage level; Said current control circuit U4 output high level signal is to current feedback terminal, and the adjustment electric power outputting current improves charging current; When charging current during greater than constant current value; The size of charging end negative pole VB-magnitude of voltage is greater than the constant current reference voltage level; Said current control circuit U4 output low level signal is to current feedback terminal, and the adjustment electric power outputting current reduces charging current, realizes the constant current charge process.
Said device also comprises a timing circuit, high temperature and serious under-voltage detection control circuit, triode Q2 and triode Q3; The base stage of said triode Q2 connects the timing output t of timing circuit, and collector electrode connects cell voltage end VB+, grounded emitter through resistance R 4; Conducting Q2 during timing circuit output timing signal; The voltage that is added in the Q1 base stage becomes low level, realizes ending of charge switch VT1 thereby make Q1 end, and promptly breaks off charging circuit; The base stage of said triode Q3 connects high temperature and serious under-voltage detection control circuit; Collector electrode connects cell voltage end VB+ through resistance R 5, the grounded emitter end, and the temperature inductor of said high temperature and serious under-voltage detection control circuit places battery pack; Too high or the battery of battery temperature is lower than under the safe voltage in limited time; High temperature and serious under-voltage detection control circuit output low level, Q3 ends, cell voltage terminal voltage VB+ conducting Q2 and Q1 is ended; Realize effect, promptly break off charging circuit by VT1.
Said device comprises that also a low temperature detects control circuit, under-voltage control circuit and a small-power metal-oxide-semiconductor VT2; The grid of said small-power metal-oxide-semiconductor VT2 connects low temperature respectively and detects the comparator U6 of control circuit and the comparator U5 of under-voltage control circuit; Source electrode connects earth terminal and current control circuit respectively with drain electrode; Temperature inductor places battery pack in the low temperature detection control circuit; When low temperature detected control circuit and under-voltage control circuit output signal, the in-phase end voltage of comparator U4 promptly reduced the reference voltage level that sends the charging current signal in metal-oxide-semiconductor VT2 conducting and then the change current control circuit; The output signal that changes current control circuit is a trickle output signal, carries out trickle charge.
The above is merely this novel most preferred embodiment, and not in order to restriction the utility model, all modifications of on this novel foundation, being done, replacement or improvement etc. all fall in this novel protection range.
Claims (5)
1. the device of the multi-mode of battery-operated switch charging; It comprises power output end, charging port, first triode, cell voltage end and charge switch, it is characterized in that, said charge switch is a MOS power tube; Its source electrode is connected charging port and power output end respectively with drain electrode; Grid connects the collector electrode of first triode, and the base stage of first triode is connected the cell voltage end of charging port, grounded emitter.
2. the multi-mode charging device of battery-operated switch according to claim 1; It is characterized in that; Also comprise a timing circuit, high temperature and serious under-voltage detection control circuit, second triode and the 3rd triode; The base stage of said second triode connects the timing output of timing circuit, and collector and emitter connects cell voltage end and ground end respectively, and the base stage of said the 3rd triode connects high temperature and serious under-voltage detection control circuit; Collector and emitter connects cell voltage end and ground end respectively, and the temperature inductor in said high temperature and the serious under-voltage detection control circuit places battery pack.
3. the multi-mode charging device of battery-operated switch according to claim 1 is characterized in that, also comprises voltage output end, photoelectrical coupler, current feedback terminal and the pressure feedback port, current control circuit and the voltage control circuit that connect successively; Said photoelectrical coupler connects Switching Power Supply.
4. the multi-mode charging device of battery-operated switch according to claim 1; It is characterized in that; Also comprise a voltage reference circuit, the reference voltage integrated circuit in the said voltage reference circuit connects the reference edge of power output end, photoelectrical coupler and control circuits at different levels.
5. the multi-mode charging device of battery-operated switch according to claim 3; It is characterized in that; Comprise that also a low temperature detects control circuit, under-voltage control circuit and a small-power metal-oxide-semiconductor; Said small-power metal-oxide-semiconductor grid connects low temperature respectively and detects control circuit and under-voltage control circuit, and source electrode connects earth terminal and current control circuit respectively with drain electrode, and the base stage of said the 3rd triode connects high temperature and serious under-voltage detection control circuit; Collector and emitter connects cell voltage end and ground end respectively, and the temperature inductor that said low temperature detects in the control circuit places battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020700990U CN202150708U (en) | 2010-12-30 | 2010-12-30 | Multi-mode charging device of cell driven switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020700990U CN202150708U (en) | 2010-12-30 | 2010-12-30 | Multi-mode charging device of cell driven switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202150708U true CN202150708U (en) | 2012-02-22 |
Family
ID=45591759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020700990U Expired - Fee Related CN202150708U (en) | 2010-12-30 | 2010-12-30 | Multi-mode charging device of cell driven switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202150708U (en) |
-
2010
- 2010-12-30 CN CN201020700990U patent/CN202150708U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20131230 |