CN203071627U - Cell constant-voltage charging control circuit - Google Patents

Cell constant-voltage charging control circuit Download PDF

Info

Publication number
CN203071627U
CN203071627U CN 201320080601 CN201320080601U CN203071627U CN 203071627 U CN203071627 U CN 203071627U CN 201320080601 CN201320080601 CN 201320080601 CN 201320080601 U CN201320080601 U CN 201320080601U CN 203071627 U CN203071627 U CN 203071627U
Authority
CN
China
Prior art keywords
npn pipe
base stage
pipe
connects
collector electrode
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
Application number
CN 201320080601
Other languages
Chinese (zh)
Inventor
王文建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Business College
Original Assignee
Zhejiang Business College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Business College filed Critical Zhejiang Business College
Priority to CN 201320080601 priority Critical patent/CN203071627U/en
Application granted granted Critical
Publication of CN203071627U publication Critical patent/CN203071627U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Amplifiers (AREA)

Abstract

The utility model discloses a cell constant-voltage charging control circuit. The cell constant-voltage charging control circuit comprises a biasing circuit, a comparison circuit, and an output drive circuit. The biasing circuit provides bias current for a whole circuit. The comparison circuit performs comparison on reference voltage and cell voltage. The output drive circuit drives and output voltage generated by the comparison circuit. By using the cell constant-voltage charging control circuit, charging control of whole cell voltage is more stable.

Description

A kind of battery constant voltage charge control circuit
Technical field
The utility model relates to integrated circuit technique, refers more particularly to battery constant voltage charge control circuit.
Background technology
In the battery charge integrated circuit, very high to the requirement of battery charging voltage, along with the carrying out of constant current charge, cell voltage rises, and when cell voltage reaches output voltage, enters the constant-potential charge stage.In this stage, cell voltage constantly rises, and in certain voltage, charging current reduces gradually simultaneously by constant.The constant voltage charge control circuit is when battery charging voltage reaches certain voltage, and the output control signal makes charging process enter the constant voltage charge state.Compare and enlarge by cell voltage VBAT and reference voltage V REF, control circuit enters constant voltage charge when VBAT reaches output voltage.
Summary of the invention
The utility model is intended to solve the deficiencies in the prior art, provides a kind of to the more stable battery constant voltage charge control circuit of battery charge control.
Battery constant voltage charge control circuit comprises biasing circuit, comparison circuit and output driving circuit:
Described biasing circuit is to provide bias current to entire circuit;
Described comparison circuit is that reference voltage and cell voltage are compared;
Described output driving circuit is that the voltage that described comparison circuit produces is driven output.
Described biasing circuit comprises first current source and NPN pipe:
One termination power of described first current source, base stage and the collector electrode of the described NPN pipe of another termination;
The base stage of a described NPN pipe and collector electrode connect an end of described first current source, grounded emitter.
Described comparison circuit comprises the 2nd NPN pipe, the 3rd NPN pipe, the 4th NPN pipe, the 5th NPN pipe, the 6th NPN pipe, the 7th NPN pipe, the 8th NPN pipe, the 9th NPN pipe, the tenth NPN pipe, PMOS pipe, the 2nd PMOS pipe and first resistance:
The base stage of described the 2nd NPN pipe connects reference voltage, and collector electrode connects power supply, and emitter connects base stage and the collector electrode of described the 3rd NPN pipe;
The base stage of described the 3rd NPN pipe and collector electrode connect the emitter of described the 2nd NPN pipe, and emitter connects the base stage of collector electrode and described the 7th NPN pipe of described the 4th NPN pipe;
The base stage of described the 4th NPN pipe connects the base stage of a described NPN pipe and an end and the base stage of described the 5th NPN pipe and the base stage of described the 6th NPN pipe of collector electrode and described first current source, collector electrode connects the base stage of emitter and described the 7th NPN pipe of described the 3rd NPN pipe, and emitter connects the emitter of described the 6th NPN pipe and an end of described first resistance;
The base stage of described the 5th NPN pipe connects the base stage of a described NPN pipe and an end and the base stage of described the 4th NPN pipe and the base stage of described the 6th NPN pipe of collector electrode and described first current source, collector electrode connects the emitter of described the 7th NPN pipe and the emitter of described the 8th NPN pipe, grounded emitter;
The base stage of described the 6th NPN pipe connects the base stage of a described NPN pipe and an end and the base stage of described the 4th NPN pipe and the base stage of described the 5th NPN pipe of collector electrode and described first current source, collector electrode connects the base stage of described the 8th NPN pipe and the emitter of described the 9th NPN pipe, and emitter connects the emitter of described the 4th NPN pipe and an end of described first resistance;
The base stage of described the 7th NPN pipe connects the emitter of described the 3rd NPN pipe and the collector electrode of described the 4th NPN pipe, and collector electrode connects grid and the drain electrode of a described PMOS pipe, and emitter connects the emitter of described the 8th NPN pipe and the collector electrode of the 5th NPN pipe;
The base stage of described the 8th NPN pipe connects the emitter of described the 9th NPN pipe and the collector electrode of described the 6th NPN pipe, and collector electrode connects grid and the drain electrode of described the 2nd PMOS pipe, and emitter connects the emitter of described the 7th NPN pipe and the collector electrode of described the 5th NPN pipe;
The base stage of described the 9th NPN pipe and collector electrode connect the emitter of described the tenth NPN pipe, and emitter connects the base stage of described the 8th NPN pipe and the collector electrode of described the 6th NPN pipe;
The base stage of described the tenth NPN pipe connects cell voltage, and collector electrode connects power supply, and emitter connects base stage and the collector electrode of described the 9th NPN pipe;
The grid of a described PMOS pipe and drain electrode connect the collector electrode of described the 7th NPN pipe, and source electrode connects power supply;
The grid of described the 2nd PMOS pipe and drain electrode connect the collector electrode of described the 8th NPN pipe, and source electrode connects power supply;
The emitter of described the 4th NPN pipe of one termination of described first resistance and the emitter of described the 6th NPN pipe, other end ground connection.
Described output driving circuit comprises the 3rd PMOS pipe, the 4th PMOS pipe, the 11 NPN pipe, the 12 NPN pipe and the 13 NPN pipe:
The grid of described the 3rd PMOS pipe connects the grid of a described PMOS pipe and the collector electrode of drain electrode and described the 7th NPN pipe, and drain electrode connects the base stage of described the 11 NPN pipe and the base stage of collector electrode and described the 12 NPN pipe, and source electrode connects power supply;
The grid of described the 4th PMOS pipe connects the base stage of described the 2nd PMOS pipe and the collector electrode of drain electrode and described the 8th NPN pipe, and drain electrode connects the collector electrode of described the 12 NPN pipe, and source electrode connects power supply;
The base stage of described the 11 NPN pipe and collector electrode connect the drain electrode of described the 3rd PMOS pipe and the base stage of described the 12 NPN pipe, and emitter connects the emitter of described the 12 NPN pipe and the collector electrode of described the 13 NPN pipe;
The base stage of described the 12 NPN pipe connects the base stage of described the 11 NPN pipe and the drain electrode of collector electrode and described the 3rd PMOS pipe, collector electrode connects the drain electrode of described the 4th PMOS pipe, and emitter connects the emitter of described the 11 NPN pipe and the collector electrode of described the 13 NPN pipe;
The base stage of described the 13 NPN pipe connects base stage and an end of collector electrode and described first current source and base stage and the base stage of described the 5th NPN pipe and the base stage of described the 6th NPN pipe of described the 4th NPN pipe of a described NPN pipe, collector electrode connects the emitter of described the 11 NPN pipe and the emitter of described the 12 NPN pipe, grounded emitter.
The battery constant voltage charge control circuit that utilizes the utility model to provide can make entire cell voltage charging control more stable.
Description of drawings
Fig. 1 is the circuit diagram of battery constant voltage charge control circuit of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model content is further specified.
Battery constant voltage charge control circuit as shown in Figure 1, comprises biasing circuit, comparison circuit and output driving circuit:
Described biasing circuit is to provide bias current to entire circuit;
Described comparison circuit is that reference voltage and cell voltage are compared;
Described output driving circuit is that the voltage that described comparison circuit produces is driven output.
Described biasing circuit comprises first current source 101 and NPN pipe 102:
One termination power VCC of described first current source 101, base stage and the collector electrode of the described NPN pipe 102 of another termination;
The end that the base stage of described NPN pipe 102 and collector electrode connect described first current source 101, grounded emitter.
Described comparison circuit comprises the 2nd NPN pipe the 103, the 3rd NPN pipe the 104, the 4th NPN pipe the 105, the 5th NPN pipe the 106, the 6th NPN pipe the 107, the 7th NPN pipe the 108, the 8th NPN pipe the 109, the 9th NPN pipe the 110, the tenth NPN pipe the 111, the one PMOS pipe the 112, the 2nd PMOS pipe 113 and first resistance 114:
The base stage of described the 2nd NPN pipe 103 meets reference voltage V REF, and collector electrode meets power supply VCC, and emitter connects base stage and the collector electrode of described the 3rd NPN pipe 104;
The base stage of described the 3rd NPN pipe 104 and collector electrode connect the emitter of described the 2nd NPN pipe 103, and emitter connects the base stage of collector electrode and described the 7th NPN pipe 108 of described the 4th NPN pipe 105;
The base stage of described the 4th NPN pipe 105 connects the base stage of described NPN pipe 102 and an end and the base stage of described the 5th NPN pipe 106 and the base stage of described the 6th NPN pipe 107 of collector electrode and described first current source 101, collector electrode connects the base stage of emitter and described the 7th NPN pipe 108 of described the 3rd NPN pipe 104, and emitter connects the emitter of described the 6th NPN pipe 107 and an end of described first resistance 114;
The base stage of described the 5th NPN pipe 106 connects the base stage of described NPN pipe 102 and an end and the base stage of described the 4th NPN pipe 105 and the base stage of described the 6th NPN pipe 107 of collector electrode and described first current source 101, collector electrode connects the emitter of described the 7th NPN pipe 108 and the emitter of described the 8th NPN pipe 109, grounded emitter;
The base stage of described the 6th NPN pipe 107 connects the base stage of described NPN pipe 102 and an end and the base stage of described the 4th NPN pipe 105 and the base stage of described the 5th NPN pipe 106 of collector electrode and described first current source 101, collector electrode connects the base stage of described the 8th NPN pipe 109 and the emitter of described the 9th NPN pipe 110, and emitter connects the emitter of described the 4th NPN pipe 105 and an end of described first resistance 114;
The base stage of described the 7th NPN pipe 108 connects the emitter of described the 3rd NPN pipe 104 and the collector electrode of described the 4th NPN pipe 105, collector electrode connects grid and the drain electrode of described PMOS pipe 112, and emitter connects the emitter of described the 8th NPN pipe 109 and the collector electrode of the 5th NPN pipe 106;
The base stage of described the 8th NPN pipe 109 connects the emitter of described the 9th NPN pipe 110 and the collector electrode of described the 6th NPN pipe 107, collector electrode connects grid and the drain electrode of described the 2nd PMOS pipe 113, and emitter connects the emitter of described the 7th NPN pipe 108 and the collector electrode of described the 5th NPN pipe 106;
The base stage of described the 9th NPN pipe 110 and collector electrode connect the emitter of described the tenth NPN pipe 111, and emitter connects the base stage of described the 8th NPN pipe 109 and the collector electrode of described the 6th NPN pipe 107;
The base stage of described the tenth NPN pipe 111 connects cell voltage, and collector electrode meets power supply VCC, and emitter connects base stage and the collector electrode of described the 9th NPN pipe 110;
The grid of described PMOS pipe 112 and drain electrode connect the collector electrode of described the 7th NPN pipe 108, and source electrode meets power supply VCC;
The grid of described the 2nd PMOS pipe 113 and drain electrode connect the collector electrode of described the 8th NPN pipe 109, and source electrode meets power supply VCC;
The emitter of described the 4th NPN pipe 105 of one termination of described first resistance 114 and the emitter of described the 6th NPN pipe 107, other end ground connection.
Described output driving circuit comprises the 3rd PMOS pipe the 115, the 4th PMOS pipe 116, the 11 NPN pipe 117, the 12 NPN pipe the 118 and the 13 NPN pipe 119:
The grid of described the 3rd PMOS pipe 115 connects the grid of described PMOS pipe 112 and the collector electrode of drain electrode and described the 7th NPN pipe 108, drain electrode connects the base stage of described the 11 NPN pipe 117 and the base stage of collector electrode and described the 12 NPN pipe 118, and source electrode meets power supply VCC;
The grid of described the 4th PMOS pipe 116 connects the base stage of described the 2nd PMOS pipe 113 and the collector electrode of drain electrode and described the 8th NPN pipe 109, and drain electrode connects the collector electrode of described the 12 NPN pipe 118, and source electrode meets power supply VCC;
The base stage of described the 11 NPN pipe 117 and collector electrode connect the drain electrode of described the 3rd PMOS pipe 115 and the base stage of described the 12 NPN pipe 118, and emitter connects the emitter of described the 12 NPN pipe 118 and the collector electrode of described the 13 NPN pipe 119;
The base stage of described the 12 NPN pipe 118 connects the base stage of described the 11 NPN pipe 117 and the drain electrode of collector electrode and described the 3rd PMOS pipe 115, collector electrode connects the drain electrode of described the 4th PMOS pipe 116, and emitter connects the emitter of described the 11 NPN pipe 117 and the collector electrode of described the 13 NPN pipe 119;
The base stage of described the 13 NPN pipe 119 connects base stage and an end of collector electrode and described first current source 101 and base stage and the base stage of described the 5th NPN pipe 106 and the base stage of described the 6th NPN pipe 107 of described the 4th NPN pipe 105 of described NPN pipe 102, collector electrode connects the emitter of described the 11 NPN pipe 117 and the emitter of described the 12 NPN pipe 118, grounded emitter.
The utility model discloses a kind of battery constant voltage charge control circuit, and describe embodiment of the present utility model and effect with reference to the accompanying drawings.What should be understood that is: above-described embodiment is just to explanation of the present utility model, rather than to restriction of the present utility model, any utility model that does not exceed in the utility model connotation scope is created, and all falls within the utility model protection range.

Claims (4)

1. battery constant voltage charge control circuit is characterized in that comprising biasing circuit, comparison circuit and output driving circuit:
Described biasing circuit is to provide bias current to entire circuit;
Described comparison circuit is that reference voltage and cell voltage are compared;
Described output driving circuit is that the voltage that described comparison circuit produces is driven output.
2. battery constant voltage charge control circuit as claimed in claim 1 is characterized in that described biasing circuit comprises first current source and NPN pipe:
One termination power of described first current source, base stage and the collector electrode of the described NPN pipe of another termination;
The base stage of a described NPN pipe and collector electrode connect an end of described first current source, grounded emitter.
3. battery constant voltage charge control circuit as claimed in claim 1 is characterized in that described comparison circuit comprises the 2nd NPN pipe, the 3rd NPN pipe, the 4th NPN pipe, the 5th NPN pipe, the 6th NPN pipe, the 7th NPN pipe, the 8th NPN pipe, the 9th NPN pipe, the tenth NPN pipe, PMOS pipe, the 2nd PMOS pipe and first resistance:
The base stage of described the 2nd NPN pipe connects reference voltage, and collector electrode connects power supply, and emitter connects base stage and the collector electrode of described the 3rd NPN pipe;
The base stage of described the 3rd NPN pipe and collector electrode connect the emitter of described the 2nd NPN pipe, and emitter connects the base stage of collector electrode and described the 7th NPN pipe of described the 4th NPN pipe;
The base stage of described the 4th NPN pipe connects the base stage of a described NPN pipe and an end and the base stage of described the 5th NPN pipe and the base stage of described the 6th NPN pipe of collector electrode and described first current source, collector electrode connects the base stage of emitter and described the 7th NPN pipe of described the 3rd NPN pipe, and emitter connects the emitter of described the 6th NPN pipe and an end of described first resistance;
The base stage of described the 5th NPN pipe connects the base stage of a described NPN pipe and an end and the base stage of described the 4th NPN pipe and the base stage of described the 6th NPN pipe of collector electrode and described first current source, collector electrode connects the emitter of described the 7th NPN pipe and the emitter of described the 8th NPN pipe, grounded emitter;
The base stage of described the 6th NPN pipe connects the base stage of a described NPN pipe and an end and the base stage of described the 4th NPN pipe and the base stage of described the 5th NPN pipe of collector electrode and described first current source, collector electrode connects the base stage of described the 8th NPN pipe and the emitter of described the 9th NPN pipe, and emitter connects the emitter of described the 4th NPN pipe and an end of described first resistance;
The base stage of described the 7th NPN pipe connects the emitter of described the 3rd NPN pipe and the collector electrode of described the 4th NPN pipe, and collector electrode connects grid and the drain electrode of a described PMOS pipe, and emitter connects the emitter of described the 8th NPN pipe and the collector electrode of the 5th NPN pipe;
The base stage of described the 8th NPN pipe connects the emitter of described the 9th NPN pipe and the collector electrode of described the 6th NPN pipe, and collector electrode connects grid and the drain electrode of described the 2nd PMOS pipe, and emitter connects the emitter of described the 7th NPN pipe and the collector electrode of described the 5th NPN pipe;
The base stage of described the 9th NPN pipe and collector electrode connect the emitter of described the tenth NPN pipe, and emitter connects the base stage of described the 8th NPN pipe and the collector electrode of described the 6th NPN pipe;
The base stage of described the tenth NPN pipe connects cell voltage, and collector electrode connects power supply, and emitter connects base stage and the collector electrode of described the 9th NPN pipe;
The grid of a described PMOS pipe and drain electrode connect the collector electrode of described the 7th NPN pipe, and source electrode connects power supply;
The grid of described the 2nd PMOS pipe and drain electrode connect the collector electrode of described the 8th NPN pipe, and source electrode connects power supply;
The emitter of described the 4th NPN pipe of one termination of described first resistance and the emitter of described the 6th NPN pipe, other end ground connection.
4. battery constant voltage charge control circuit as claimed in claim 1 is characterized in that described output driving circuit comprises the 3rd PMOS pipe, the 4th PMOS pipe, the 11 NPN pipe, the 12 NPN pipe and the 13 NPN pipe:
The grid of described the 3rd PMOS pipe connects the grid of a described PMOS pipe and the collector electrode of drain electrode and described the 7th NPN pipe, and drain electrode connects the base stage of described the 11 NPN pipe and the base stage of collector electrode and described the 12 NPN pipe, and source electrode connects power supply;
The grid of described the 4th PMOS pipe connects the base stage of described the 2nd PMOS pipe and the collector electrode of drain electrode and described the 8th NPN pipe, and drain electrode connects the collector electrode of described the 12 NPN pipe, and source electrode connects power supply;
The base stage of described the 11 NPN pipe and collector electrode connect the drain electrode of described the 3rd PMOS pipe and the base stage of described the 12 NPN pipe, and emitter connects the emitter of described the 12 NPN pipe and the collector electrode of described the 13 NPN pipe;
The base stage of described the 12 NPN pipe connects the base stage of described the 11 NPN pipe and the drain electrode of collector electrode and described the 3rd PMOS pipe, collector electrode connects the drain electrode of described the 4th PMOS pipe, and emitter connects the emitter of described the 11 NPN pipe and the collector electrode of described the 13 NPN pipe;
The base stage of described the 13 NPN pipe connects base stage and an end of collector electrode and described first current source and base stage and the base stage of described the 5th NPN pipe and the base stage of described the 6th NPN pipe of described the 4th NPN pipe of a described NPN pipe, collector electrode connects the emitter of described the 11 NPN pipe and the emitter of described the 12 NPN pipe, grounded emitter.
CN 201320080601 2013-02-21 2013-02-21 Cell constant-voltage charging control circuit Expired - Fee Related CN203071627U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320080601 CN203071627U (en) 2013-02-21 2013-02-21 Cell constant-voltage charging control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320080601 CN203071627U (en) 2013-02-21 2013-02-21 Cell constant-voltage charging control circuit

Publications (1)

Publication Number Publication Date
CN203071627U true CN203071627U (en) 2013-07-17

Family

ID=48770377

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320080601 Expired - Fee Related CN203071627U (en) 2013-02-21 2013-02-21 Cell constant-voltage charging control circuit

Country Status (1)

Country Link
CN (1) CN203071627U (en)

Similar Documents

Publication Publication Date Title
CN102904329B (en) Electric power management circuit
CN202230128U (en) Overcurrent detection and alarm circuit for rechargeable battery
CN204290475U (en) Power supply switch circuit and electronic equipment
CN203071869U (en) Oscillator circuit
CN203658414U (en) Cell simulation circuit
CN204118791U (en) The control protection electric circuit of portable power source
CN203071627U (en) Cell constant-voltage charging control circuit
CN203261052U (en) Charging circuit utilizing battery of turned-off laptop
CN104897991A (en) Battery simulator circuit
CN206195385U (en) Charging circuit
CN204205574U (en) A kind of over-discharge protection circuit
CN201733130U (en) Power supply management module circuit
CN203617696U (en) Cell over-discharge protection circuit
CN206602403U (en) A kind of electronic equipment power supply circuit
CN204578363U (en) A kind of bidirectional electronic switch for photovoltaic controller and drive circuit
CN204424936U (en) A kind of battery feed circuit
CN206004961U (en) A kind of Internet of Things light fixture constant-current driving control circuit
CN204089284U (en) A kind of aptitude chargeable circuit and electric terminal equipment
CN204244073U (en) A kind of controllable direct current power supply circuit
CN204424970U (en) With circuit, adaptive device and portable power source that portable power source fills power supply to little load
CN204795713U (en) LED step -down voltage stabilizing circuit
CN104454603A (en) Electronic device and fan driving circuit thereof
CN103840804A (en) Circuit enabling LDO to be turned off rapidly through diode
CN202586291U (en) Overload protection circuit
CN204064373U (en) A kind of energy-conservation LCD control system based on flow measurement device

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: 20130717

Termination date: 20140221