CN201623518U - Single-chip charging circuit for electric vehicles - Google Patents
Single-chip charging circuit for electric vehicles Download PDFInfo
- Publication number
- CN201623518U CN201623518U CN2010201498149U CN201020149814U CN201623518U CN 201623518 U CN201623518 U CN 201623518U CN 2010201498149 U CN2010201498149 U CN 2010201498149U CN 201020149814 U CN201020149814 U CN 201020149814U CN 201623518 U CN201623518 U CN 201623518U
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- circuit
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- transformer
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A single-chip charging circuit for electric vehicles belongs to an application circuit for lead-acid battery charging and mainly comprises a Top247YN main chip. After a lightning protection circuit, a conjugation suppression circuit, a rectification circuit and a filter circuit are serially connected in sequence, a positive voltage from the filter circuit is connected to the pin L of the main chip, the negative voltage from the filter circuit is connected to the pins S, X and F, an over-voltage protection circuit is in parallel connection between the pin D and the pins S, X and F, the secondary coil of a transformer is connected with a secondary filter circuit, an optical coupler IC is further connected between the secondary coil of the transformer and the pin C of the main chip, a charge-disable determination circuit is connected between the pin C and the pins S, X and F, transformer output filtered by the secondary filter circuit and the pins S, X and F form a charge output loop, a constant-voltage circuit is in parallel connection between the transformer output and the pins S, X and F, and output from the pins S, X and F is in serial connection with a constant-current circuit. The circuit has the advantages of high charging efficiency, energy savings, quick charging, impunity from interference and high stability, and has the capabilities of overheat protection, over-voltage protection, lightning resistance and the like.
Description
Technical field:
The utility model belongs to a kind of application circuit, and particularly a kind of single-chip is used for electric motor car charging lead-acid cells device circuit.
Background technology:
Electric bicycle is subjected to people's favor now just day by day, is widely applied to every field.It has advantages such as environmental protection and energy saving, safe ready.Electric motor car useful life and performance quality depend on battery pack to a great extent, and the quality of battery pack except sole mass, also has very big getting in touch with charger especially.Existing battery pack all is a sealed lead acid battery, and the charger that is used with it generally all is to adopt common switching power circuit, and there are many deficiencies in sort circuit: 1, efficient is lower, easily heating; 2, the charging curve of the existing battery of charge characteristic incompatibility often causes undercharge or overcharges; 3, frequency lower (generally being 40kHz) is so volume is big, Heavy Weight; 4, use active components and parts many, discrete degree is big, poor reliability, and widespread usage operational amplifier, and regular meeting causes damaging under the situation of impulse disturbances; 5, protection link weaknesses such as overcurrent, overvoltage, thunderbolt.
Summary of the invention:
The utility model is exactly in order to overcome the shortcoming of the described charger circuit of background technology, to invent a kind of charger circuit of single-chip, can reduce number of elements, improve charging performance, sufficient overcurrent, overvoltage, anti-lightning strike protection being provided simultaneously.
This circuit is made of master chip, lightning protection circuit, conjugation inhibition circuit, rectification, filter circuit, overvoltage crowbar, high frequency transformer, secondary filter circuit, light lotus root IC, charging termination decision circuitry and constant-current circuit, constant voltage circuit, positive voltage was connected to master chip L pin after lightning protection circuit, conjugation inhibition circuit, rectification, filter circuit were connected successively, and the D pin power supply of giving master chip by the first utmost point winding of transformer, negative voltage is connected to S, X, the F pin of master chip, is parallel with an overvoltage crowbar between D and S, X, F pin; The secondary coil of transformer is connected with filter circuit, also is connected with light lotus root IC between transformer secondary output and the master chip C pin, is connected with the charging termination decision circuitry between C pin and S, X, the F pin; Secondary filter circuit output and S, X behind the transformer, F pin constitute the charging output loop, are parallel with constant voltage circuit, S, X, the output of F pin therebetween and are in series with constant-current circuit.
The concrete model of master chip is preferably used Top247YN.
Can preferably connect TVS transient state diode on the D pin of master chip, can be used for the influence of suppressor pulse to master chip, at the front end of TVS transient state diode, constitute elementary clamper after resistance and the electric capacity parallel connection and suppress circuit, the reverse photopeak that is produced when being absorbed in the speed-sensitive switch conversion.
The secondary output of transformer can also connect a motor, is convenient to drive small-sized fans and dispels the heat to entire circuit.Preferably can a charging indicator light in parallel between output and the constant-current circuit after the secondary coil filtering, indicator light is made corresponding reaction when charging is finished.
This charging circuit has energy-efficient advantage, and charge efficiency height, speed are fast, and has defencive functions such as overheated, overvoltage, anti-thunderbolt, and antijamming capability is strong.Be more suitable for sealing charging lead-acid cells characteristic, can not fill deficiency and also can not overcharge.And components and parts are few, an active element is only arranged, and improved the practicality and the reliability of entire circuit greatly.
Description of drawings:
Fig. 1 is a schematic diagram of the present utility model.
Embodiment:
In conjunction with Fig. 1, an embodiment of this circuit is described according to current direction.
After single-phase civil power connected lightning prevention circuit 2, conjugation inhibition circuit 3, rectification circuit 4, filter circuit 5 successively, positive voltage was connected to the primary coil of high frequency transformer 6, was the D pin power supply of the master chip 1 of Top247YN to model through primary coil; The positive voltage that filter circuit 5 comes out is also connected to the L pin of master chip 1, and negative voltage is connected to S, X, three pins of F, is parallel with an overvoltage crowbar 7 between D and S, X, the F.The secondary coil output of transformer 6 connects secondary filter circuit 8, output charging positive voltage after the filtering; Another group secondary coil connects a light lotus root IC9, and light lotus root IC is connected to the C pin of master chip 1, and the C pin is connected with S, X, F simultaneously, is parallel with therebetween and holds the C pin compensating circuit that resistor constitutes.S, X, F output serial connection charge stop decision circuitry 10, constant-current circuit 11 back output becoming charging negative voltages, are parallel with a constant voltage circuit 12 between the charging generating positive and negative voltage.
Connect a TVS transient state diode D3 on the D pin of master chip 1, at its front end, capacitor C 1 and resistance R 2 compose in parallel an elementary clamper and suppress circuit.Transient state diode D3 and the series connection of elementary clamp circuit.
Other is connected with charging termination decision circuitry 10 after having the 3rd group of secondary coil to connect a motor 13, and when charging normal, this motor rotates.Heat radiation in the time of can driving small-sized fans and work to entire circuit.
During this circuit working, the L pin of master chip 1 also is an overvoltage and under-voltage protection, when the overtension behind a series of rectifying and wave-filterings, high-voltage pulse is arranged or have under-voltagely, all can cause closing automatically of master chip, thus the protection entire circuit.The work of master chip 1 is controlled by light lotus root IC9 by the C pin, conducting or close.The conducting that light lotus root IC9 goes round and begins again, close, the break-make of control master chip 1 produces certain pulse current, exports through constant-current circuit 11 and has just formed charging current, reaches the purpose to the battery pack constant current charge.In the charging, the voltage of battery pack is elevated to a certain degree, and constant voltage circuit 12 feeds back to light lotus root IC9, and control master chip 1 turn-offs rapidly and quits work, and has just reached the purpose of constant voltage charge.
Claims (4)
1. monolithic electric motor car charging circuit, it is characterized in that: by master chip (1), lightning protection circuit (2), conjugation suppresses circuit (3), rectification (4), filter circuit (5), overvoltage crowbar (7), high frequency transformer (6), secondary filter circuit (8), light lotus root IC (9), charging termination decision circuitry (10) and constant-current circuit (11), constant voltage circuit (12) constitutes, lightning protection circuit (2), conjugation suppresses circuit (3), rectification (4), the D pin power supply that positive voltage was connected to master chip (1) L pin and gives master chip (1) by the first utmost point winding of transformer (6) after filter circuit (5) was connected successively, negative voltage is connected to the S of master chip (1), X, the F pin is at D and S, X, be parallel with an overvoltage crowbar (7) between the F pin; The secondary coil of transformer is connected with filter circuit (8), also is connected with light lotus root IC (9) between transformer secondary output and master chip (1) the C pin, is connected with charging termination decision circuitry (10) between C pin and S, X, the F pin; (8) output of secondary filter circuit and S, X behind the transformer, F pin constitute the charging output loop, are parallel with constant voltage circuit (12), S, X, the output of F pin therebetween and are in series with constant-current circuit (11).
2. by the described charging circuit of claim 1, it is characterized in that described master chip (1) is the integrated circuit of Top247YN model.
3. by the described charging circuit of claim 1, it is characterized in that: electric capacity (C1) and resistance (R2) parallel connection be a series connection TVS transient state diode (D3) afterwards, is connected to the D pin of master chip (1).
4. by the described charging circuit of claim 1, it is characterized in that: the secondary output of transformer is connected with a motor (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201498149U CN201623518U (en) | 2010-03-22 | 2010-03-22 | Single-chip charging circuit for electric vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201498149U CN201623518U (en) | 2010-03-22 | 2010-03-22 | Single-chip charging circuit for electric vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201623518U true CN201623518U (en) | 2010-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201498149U Expired - Fee Related CN201623518U (en) | 2010-03-22 | 2010-03-22 | Single-chip charging circuit for electric vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201623518U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123978A (en) * | 2016-02-25 | 2017-09-01 | 博大科技股份有限公司 | Voltage protection |
-
2010
- 2010-03-22 CN CN2010201498149U patent/CN201623518U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123978A (en) * | 2016-02-25 | 2017-09-01 | 博大科技股份有限公司 | Voltage protection |
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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: 20101103 Termination date: 20150322 |
|
| EXPY | Termination of patent right or utility model |