CN205248884U - New energy automobile's battery charging circuit - Google Patents
New energy automobile's battery charging circuit Download PDFInfo
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- CN205248884U CN205248884U CN201521111897.1U CN201521111897U CN205248884U CN 205248884 U CN205248884 U CN 205248884U CN 201521111897 U CN201521111897 U CN 201521111897U CN 205248884 U CN205248884 U CN 205248884U
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- triode
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- energy automobile
- battery
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
New energy automobile's battery charging circuit relates to battery charging circuit technical field, and its circuit includes direct current supply circuit and first triode, direct current supply circuit warp charge for the battery behind the first triode signal amplification, the utility model discloses still include overvoltage crowbar, overvoltage crowbar includes bleeder circuit, first diode, second triode and third triode, bleeder circuit connects to the both ends of battery, bleeder circuit's output warp the base of third triode is delivered to with voltage to first diode, and the collecting electrode of third triode connects the base of second triode, and the collecting electrode of second triode connects the base of first triode, and the projecting pole of second triode and the projecting pole of third triode all connect the negative pole of battery, the utility model discloses can play overvoltage protection's effect to the battery, this overvoltage protection circuit simple structure, it is with low costs.
Description
Technical field
The utility model relates to battery charger technical field, particularly relates to the battery charger of new-energy automobile.
Background technology
New-energy automobile refers to and adopts unconventional vehicle fuel as power resources (or using conventional vehicle fuel, employing novel on-vehicle power set), the advanced technology of the dynamic Control of comprehensive vehicle and driving aspect, the know-why advanced person of formation, has the automobile of new technology, new construction.
New-energy automobile comprises pure electric automobile, stroke-increasing electric automobile, hybrid vehicle, FC-EV, hydrogen engine automobile and other new-energy automobiles etc. Pure electric automobile (BladeElectricVehicles, BEV) be a kind of automobile of single battery as stored energy power source that adopt, it utilizes battery as stored energy power source, provides electric energy by battery to motor, drive motor running, thus propelling vehicle travels. Conventionally, all to need by battery charger be its charging to battery.
The pure electric automobile of prior art, its battery charger generally lacks voltage protection, in the time that battery is charged; if battery is full of, do not take any measure, be easy to so make over-charging of battery; go down for a long time, will affect the life-span of battery.
Also there are some battery chargers to be provided with overvoltage crowbar, such as a kind of for the charging overvoltage protection device of battery, comprise the first potentiometer, the second potentiometer, the first resistance to the four resistance, also comprise triode, relay, diode, transformer, amplifier, bridge rectifier, fuse, the first electric capacity and the second electric capacity; The two ends of a winding of described transformer are connected with positive source input and power cathode input respectively, the first end of the Secondary Winding of described transformer is connected with the first ac input end of described bridge rectifier, and the second end of the Secondary Winding of described transformer is connected with the second ac input end of described bridge rectifier.
But above circuit structure more complicated, cost is high.
Utility model content
The purpose of this utility model is to avoid weak point of the prior art and battery charger that new-energy automobile is provided, and this battery charger has overvoltage crowbar, and this overvoltage crowbar is simple in structure, and cost is low.
The purpose of this utility model is achieved through the following technical solutions:
The battery charger of new-energy automobile is provided, comprise direct current supply circuit and the first triode, described direct current supply circuit is battery charging after described the first triode amplifying signal, the utility model also comprises overvoltage crowbar, described overvoltage crowbar comprises bleeder circuit, the first diode, the second triode and the 3rd triode, described bleeder circuit is connected to the two ends of battery, the output of described bleeder circuit is delivered to voltage through described the first diode the base stage of the 3rd triode, the colelctor electrode of the 3rd triode connects the base stage of the second triode, the colelctor electrode of the second triode connects the base stage of the first triode, the emitter stage of the emitter stage of the second triode and the 3rd triode all connects the negative pole of battery.
Described bleeder circuit comprises the 6th resistance and adjustable resistance of series connection.
Described battery charger also comprises start-up circuit, described start-up circuit comprises the second light emitting diode, the second resistance, the 3rd resistance and the second electric capacity, the positive pole of described the second light emitting diode connects the base stage of described the first triode, the negative pole of described the second light emitting diode connects one end of described the second resistance, one end of the 3rd resistance and the colelctor electrode of the second triode described in another termination of described the second resistance, one end of the second electric capacity described in another termination of described the 3rd resistance, the base stage of the 3rd triode described in another termination of described the second electric capacity.
The battery charger of new-energy automobile also comprises the 5th resistance and the 7th resistance, after described the 5th resistance and the 7th resistance serial connection, is connected between the emitter stage of the 3rd triode and the negative pole of the first diode.
The resistance of described the second resistance is that 470 ohm, the resistance of the 3rd resistance are 1 kilohm, and the capacitance of the second electric capacity is 100 microfarads.
Described direct current supply circuit comprises transformer and the secondary rectifier bridge being connected with transformer.
The output of described rectifier bridge is connected to the first electric capacity.
The capacitance of described the first electric capacity is 470 microfarads.
Described direct current supply circuit also comprises power display circuit, and described power display circuit comprises the first light emitting diode and first resistance of serial connection, described power display circuit and described the first Capacitance parallel connection.
The resistance of described the first resistance is 1 kilohm.
Described the first triode is that model is 8550 triode, and the resistance of described the 6th resistance is 10 kilohms.
The beneficial effects of the utility model: the battery charger of new-energy automobile of the present utility model comprises direct current supply circuit and the first triode, described direct current supply circuit is battery charging after described the first triode amplifying signal, the utility model also comprises overvoltage crowbar, described overvoltage crowbar comprises bleeder circuit, the first diode, the second triode and the 3rd triode, described bleeder circuit is connected to the two ends of battery, the output of described bleeder circuit is delivered to voltage through described the first diode the base stage of the 3rd triode, the colelctor electrode of the 3rd triode connects the base stage of the second triode, the colelctor electrode of the second triode connects the base stage of the first triode, the emitter stage of the emitter stage of the second triode and the 3rd triode all connects the negative pole of battery, the utility model is after the voltage of bleeder circuit output exceedes the pressure drop (1.4V) of BE knot of the first diode and the 3rd triode, the base stage of the 3rd triode obtains electric current, make the voltage drop of the colelctor electrode of the 3rd triode, impel the electric current of the base stage of the second triode also to decline, and then the base current of the first triode also declines, finally make output voltage also decline, just battery is played the effect of overvoltage protection, this overvoltage crowbar only comprises bleeder circuit, the first diode, the second triode and the several devices of the 3rd triode, simple in structure, cost is low.
Brief description of the drawings
Utilize accompanying drawing to be described further utility model, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the circuit diagram of the battery charger of new-energy automobile of the present utility model.
Detailed description of the invention
With the following Examples the utility model is further described.
The battery charger of the new-energy automobile of the present embodiment, as shown in Figure 1, comprise direct current supply circuit and the first triode T1, described direct current supply circuit is battery charging after described the first triode T1 amplifying signal, the present embodiment also comprises overvoltage crowbar, described overvoltage crowbar comprises bleeder circuit, the first diode D1, the second triode T2 and the 3rd triode T3, described bleeder circuit is connected to the two ends of battery, comprise the 6th resistance R 6 and the adjustable resistance RP of series connection, the output of described bleeder circuit is delivered to voltage through described the first diode D1 the base stage of the 3rd triode T3, the colelctor electrode of the 3rd triode T3 connects the base stage of the second triode T2, the colelctor electrode of the second triode T2 connects the base stage of the first triode T1, the emitter stage of the emitter stage of the second triode T2 and the 3rd triode T3 all connects the negative pole of battery.
The present embodiment is after the voltage of bleeder circuit output exceedes the pressure drop (1.4V) of BE knot of the first diode D1 and the 3rd triode T3, the base stage of the 3rd triode T3 obtains electric current, make the voltage drop of the colelctor electrode of the 3rd triode T3, impel the electric current of the base stage of the second triode T2 also to decline, and then the base current of the first triode T1 also declines, finally make output voltage also decline, just battery is played the effect of overvoltage protection, this overvoltage crowbar only comprises bleeder circuit, the first diode D1, the second triode T2 and the several devices of the 3rd triode T3, simple in structure, cost is low.
Described battery charger also comprises start-up circuit, described start-up circuit comprises the second LED 2, the second resistance R 2, the 3rd resistance R 3 and the second capacitor C 2, the positive pole of described the second LED 2 connects the base stage of described the first triode T1, the negative pole of described the second LED 2 connects one end of described the second resistance R 2, one end of the 3rd resistance R 3 and the colelctor electrode of the second triode T2 described in another termination of described the second resistance R 2, one end of the second capacitor C 2 described in another termination of described the 3rd resistance R 3, the base stage of the 3rd triode T3 described in another termination of described the second capacitor C 2.
Described direct current supply circuit comprises transformer and the secondary rectifier bridge being connected with transformer.
The output of described rectifier bridge is connected to the first capacitor C 1.
Described direct current supply circuit also comprises power display circuit, and described power display circuit comprises the first LED 1 and first resistance R 1 of serial connection, and described power display circuit is in parallel with described the first capacitor C 1.
Between the base stage of the colelctor electrode of the first triode T1 and the second triode T2, be connected to the 4th resistance R 4.
Starting up's process: electric current is through the BE knot of the first triode T1, through the second LED 2, the second resistance R 2, the 3rd resistance R 3, the second capacitor C 2 is charged, because the second capacitor C 2 did not have electric charge in inside before energising, so the electric current of BE knot that flows through the first triode T1 is after amplifying, just have the colelctor electrode of direct voltage output to the first triode T1, this time, electric current divided 3 loops:
1, flowing through the 4th resistance R 4 provides bias current to the second triode T2, allows the first triode T1 continue to maintain conducting to reach.
2, flow through the bleeder circuit that the first resistance R 1 and adjustable resistance RP form. The effect of the first resistance R 6 and adjustable resistance RP is exactly to form voltage sense line.
3, charge the battery.
The battery charger of new-energy automobile also comprises the 5th resistance R 5 and the 7th resistance R 7; after described the 5th resistance R 5 and the 7th resistance R 7 serial connections, be connected between the emitter stage of the 3rd triode T3 and the negative pole of the first diode D1; the 7th resistance R 7 is current sampling resistor, can be used for overcurrent protection.
The resistance of described the first resistance R 1 is 1 kilohm.
The resistance of described the second resistance R 2 is that 470 ohm, the resistance of the 3rd resistance R 3 are 1 kilohm, and the resistance of the 5th resistance R 5 is 10 kilohms, and the capacitance of described the first capacitor C 1 is 470 microfarads, and the capacitance of the second capacitor C 2 is 100 microfarads.
Described the first triode T1 is that model is 8550 triode, and the second triode T2 and the 3rd triode T3 are all that model is 9014 triode, and the resistance of described the 6th resistance R 6 is 10 kilohms.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not restriction to the utility model protection domain; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (10)
1. the battery charger of new-energy automobile, comprise direct current supply circuit and the first triode, described direct current supply circuit is battery charging after described the first triode amplifying signal, it is characterized in that: also comprise overvoltage crowbar, described overvoltage crowbar comprises bleeder circuit, the first diode, the second triode and the 3rd triode, described bleeder circuit is connected to the two ends of battery, the output of described bleeder circuit is delivered to voltage through described the first diode the base stage of the 3rd triode, the colelctor electrode of the 3rd triode connects the base stage of the second triode, the colelctor electrode of the second triode connects the base stage of the first triode, the emitter stage of the emitter stage of the second triode and the 3rd triode all connects the negative pole of battery.
2. the battery charger of new-energy automobile as claimed in claim 1, is characterized in that: described bleeder circuit comprises the 6th resistance and adjustable resistance of series connection.
3. the battery charger of new-energy automobile as claimed in claim 1, it is characterized in that: described battery charger also comprises start-up circuit, described start-up circuit comprises the second light emitting diode, the second resistance, the 3rd resistance and the second electric capacity, the positive pole of described the second light emitting diode connects the base stage of described the first triode, the negative pole of described the second light emitting diode connects one end of described the second resistance, one end of the 3rd resistance and the colelctor electrode of the second triode described in another termination of described the second resistance, one end of the second electric capacity described in another termination of described the 3rd resistance, the base stage of the 3rd triode described in another termination of described the second electric capacity.
4. the battery charger of new-energy automobile as claimed in claim 3, is characterized in that: the resistance of described the second resistance is that 470 ohm, the resistance of the 3rd resistance are 1 kilohm, and the capacitance of the second electric capacity is 100 microfarads.
5. the battery charger of new-energy automobile as claimed in claim 3, is characterized in that: also comprise the 5th resistance and the 7th resistance, after described the 5th resistance and the 7th resistance serial connection, be connected between the emitter stage of the 3rd triode and the negative pole of the first diode.
6. the battery charger of new-energy automobile as claimed in claim 1, is characterized in that: described direct current supply circuit comprises transformer and the secondary rectifier bridge being connected with transformer.
7. the battery charger of new-energy automobile as claimed in claim 6, is characterized in that: the output of described rectifier bridge is connected to the first electric capacity.
8. the battery charger of new-energy automobile as claimed in claim 7, is characterized in that: the capacitance of described the first electric capacity is 470 microfarads.
9. the battery charger of new-energy automobile as claimed in claim 7 or 8, it is characterized in that: described direct current supply circuit also comprises power display circuit, described power display circuit comprises the first light emitting diode and first resistance of serial connection, described power display circuit and described the first Capacitance parallel connection.
10. the battery charger of new-energy automobile as claimed in claim 9, is characterized in that: the resistance of described the first resistance is 1 kilohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521111897.1U CN205248884U (en) | 2015-12-29 | 2015-12-29 | New energy automobile's battery charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521111897.1U CN205248884U (en) | 2015-12-29 | 2015-12-29 | New energy automobile's battery charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205248884U true CN205248884U (en) | 2016-05-18 |
Family
ID=55947955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521111897.1U Expired - Fee Related CN205248884U (en) | 2015-12-29 | 2015-12-29 | New energy automobile's battery charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205248884U (en) |
-
2015
- 2015-12-29 CN CN201521111897.1U patent/CN205248884U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20161229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |