CN217741368U - CC signal circuit of alternating current charging gun - Google Patents
CC signal circuit of alternating current charging gun Download PDFInfo
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- CN217741368U CN217741368U CN202221898980.8U CN202221898980U CN217741368U CN 217741368 U CN217741368 U CN 217741368U CN 202221898980 U CN202221898980 U CN 202221898980U CN 217741368 U CN217741368 U CN 217741368U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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Abstract
The utility model discloses a CC signal circuit of an AC charging gun, which comprises a battery anode, a triode Q1 connected through a resistor R1 after being connected with a first pin and a third pin of a voltage stabilization chip, and a battery cathode connected after the base of the triode Q1 is connected with the third pin of the voltage stabilization chip and a resistor R5; the collector of the triode Q1 is sequentially connected with a diode D1 and a resistor R2 and then connected with a CC resistor network unit, a capacitor C1 and a voltage regulator tube ZD1 are connected in parallel between a node between the diode D1 and the resistor R2 and the cathode of the battery, and the resistor R2 is connected with a detection port of the single chip microcomputer through a resistor R5. The utility model discloses a triode and a plurality of resistance of a voltage stabilization chip, PNP type have constituted a constant current circuit for detect CC resistance and use, obtain CC resistance detection voltage through resistance R2 and the inside CC resistance network rear end of rifle head, CC resistance detection voltage is stable, and the testing result is accurate.
Description
Technical Field
The utility model relates to a new energy automobile technical field especially relates to the rifle technical field that charges, specific theory, a AC charging rifle CC signal circuit.
Background
In the new energy automobile field, charging is divided into four modes in standard, the mode I is forbidden to be used in most countries due to the lack of necessary safety protection, the mode II is an alternating current charging device which can be used along with automobiles, the difference from the mode I is that a control protection box (IC-CPD) is added on a charging cable, the mode III is an alternating current charging pile, the mode IV is a direct current charging pile, and in the mode II/III of the new energy automobile, charging connection confirmation of a charging gun/pile and an electric automobile is realized by a vehicle end identification CC signal (connection detection signal). Accurate detection of CC signal detection is crucial to normal charging in mode two/three, and a traditional CC detection signal is obtained by dividing a +12V constant current through a resistor. The detection mode has the disadvantages that the CC resistance voltage division detection is inaccurate when the normal electricity (the normal electricity refers to a positive power supply which is connected from the positive pole of the storage battery and is not controlled by any switch, relay and the like) is unstable, and the erroneous judgment can be caused once the detection exceeds the detection tolerance range specified by the national standard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an exchange rifle CC signal circuit that charges for the operating voltage who solves CC signal among the prior art obtains through the resistance partial pressure and leads to CC resistance partial pressure to detect unsafe problem when the car normal electricity is unstable.
The utility model discloses a following technical scheme solves above-mentioned problem:
the utility model provides a AC charging rifle CC signal circuit, includes battery BAT1, the first pin of voltage regulator chip, third pin and the first end of resistance R1 are connected to the positive pole of battery BAT1, the second pin of voltage regulator chip connects the first end of resistance R3, the negative pole of battery BAT1 and ground connection are connected to the second end of resistance R3, the projecting pole of triode Q1 is connected to the second end of resistance R1, the first end of resistance R3 is connected to the base of triode Q1, the positive pole of diode D1 is connected to the collecting electrode of triode Q1, the first end of electric capacity C1, the negative pole of stabilivolt ZD1 and the first end of resistance R2 are connected to the negative pole of triode Q1, the second end of resistance R2 connects CC resistance network unit for provide voltage for CC resistance network unit, the second end of resistance R2 still connects the first end of resistance R5, the second end of resistance R5 connects the detection port of singlechip.
The CC resistance network unit comprises a resistor RC connected with the second end of the resistor R2, the resistor RC is connected with the resistor R4 in series and then is grounded, and the resistor R4 is connected with a switch S1 in parallel.
The resistor R1 is a variable resistor.
The triode Q1 is a PNP type triode.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
(1) The utility model discloses a triode and a plurality of resistance of a voltage stabilization chip, a PNP type have constituted a constant current circuit for detect CC resistance and use, obtain CC resistance detection voltage through resistance R2 and the inside CC resistance network of rifle head (resistance R4, resistance RC and switch S1) rear end, CC resistance detection voltage is stable, and the testing result is accurate.
(2) The utility model discloses a zener diode steady voltage and resistance current-limiting make CC resistance detection voltage no longer than singlechip detectable voltage.
(3) The utility model provides a constant current circuit is used for detecting the voltage on the CC resistance, and circuit structure is simple, the reliability is high.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
wherein, U1-voltage stabilizing chip.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
The embodiment is as follows:
with reference to fig. 1, a CC signal circuit of an ac charging gun includes a battery BAT1, a positive electrode of the battery BAT1 is connected to a first PIN (PIN 1) and a third PIN (PIN 3) of a voltage stabilization chip U1 and a first end of a resistor R1, a second PIN (PIN 2) of the voltage stabilization chip U1 is connected to a first end of a resistor R3, a second end of the resistor R3 is connected to a negative electrode of the battery BAT1 and grounded, a second end of the resistor R1 is connected to an emitter of a triode Q1, a base of the triode Q1 is connected to a first end of the resistor R3, a collector of the triode Q1 is connected to an anode of a diode D1, a cathode of the diode D1 is connected to a first end of a capacitor C1, a cathode of a voltage stabilization tube ZD1 and a first end of a resistor R2, a second end of the capacitor C1 and an anode of the voltage stabilization tube 1 are connected to a negative electrode of the battery BAT1, a second end of the resistor R2 is connected to a CC resistor network unit for providing voltage to the CC resistor network unit, a second end of the resistor R2 is also connected to a second end of a resistor R5, and a second end of the detection port of the voltage stabilization tube R5 is connected to a detection port of a single chip microcomputer.
When the voltage stabilizing chip U1 adopts the chip AS431, PIN1 and PIN3 of the chip AS431 are in short circuit and connected to the battery BAT1 (+ 12V), PIN1 and PIN3 of the chip AS431 are in short circuit and then are equivalent to a voltage stabilizing tube of 2.5V, a voltage of 9.5V is generated at the PIN2 end of the chip AS431, the triode Q1 is simultaneously conducted, the triode Q1 adopts an NPN type triode, namely, the E pole, namely the emitting pole, of the triode Q1 generates a current I, the current I can be calculated through a loop of the battery BAT1 → a resistor R1 → the triode Q1 → a voltage stabilizing chip U1, and the PN junction voltage drop between the emitting pole and the base pole of the triode Q1 is 0.7V. When the resistor R1 is 1.8K Ω, the current I = (12-0.7-9.5) V/1.8K Ω =1mA, constant currents of different sizes can be generated by selecting the resistors R1 with different resistance values, and the resistors R1 can be used for detecting the CC resistor. The resistor R1 can also adopt a variable resistor, and can obtain the required constant current by adjusting the resistance value, so that the generation of the constant current of 1mA is only for easier calculation of subsequent detection voltage.
In order to obtain pure and stable constant current, the rear end of the constant current source performs diode rectification on the 1mA through a diode D1, and performs capacitance filtering through a capacitor C1, and because the detection voltage of a common single chip microcomputer is +5V, a 5.1V voltage stabilizing diode ZD1 is used for clamping the voltage on the CC resistor in the scheme, so that the detection voltage CC _ SEN of the CC resistor does not exceed the detection voltage of the single chip microcomputer. A resistor R5 is used for limiting the current flowing into the detection port of the single chip microcomputer, and the function of protecting the single chip microcomputer is achieved.
And a CC resistance network inside the gun head is arranged in a dotted line frame, and different combinations of the resistor R4 and the resistor RC represent different cable capacities. There are four common combinations of resistor RC and resistor R4:
1) RC =1.51.8k Ω, R4=1.81.8k Ω, indicating a charging cable capacity of 10A;
2) RC =0.68K Ω, R4=2.7K Ω, indicating a charging cable capacity of 16A;
3) RC =0.22K Ω, R4=3.3K Ω, indicating a charging cable capacity of 32A;
4) RC =0.1K Ω, R4=3.3K Ω, indicating a charging cable capacity of 63A.
The normally closed switch S1 inside the charging gun head is closed and opened, so that the voltages of the detection port CC _ SEN of the single chip microcomputer are different, and CC signal detection of the charging gun is achieved.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are merely preferred embodiments of the present invention, it is to be understood that the present invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (4)
1. The utility model provides a CC signal circuit of alternating current charging rifle which characterized in that, includes battery BAT1, the first pin of first pin, the third pin of voltage regulator chip and the first end of resistance R1 are connected to the positive pole of battery BAT1, the first end of second pin connecting resistance R3 of voltage regulator chip, the negative pole of battery BAT1 and ground connection are connected to the second end of resistance R3, the projecting pole of triode Q1 is connected to the second end of resistance R1, the first end of base connection resistance R3 of triode Q1, the positive pole of diode D1 is connected to the collecting electrode of triode Q1, the first end of electric capacity C1, the negative pole of stabilivolt ZD1 and the first end of resistance R2 are connected to the negative pole of battery BAT1, the second end of resistance R2 connects CC resistance network unit for provide voltage for CC resistance network unit, the second end of resistance R2 still connects the first end of resistance R5, the second end of resistance R5 connects the detection port of singlechip R1.
2. An ac charging gun CC signal circuit as claimed in claim 1 wherein the CC resistance network unit includes a resistor RC connected to the second end of the resistor R2, the resistor RC is connected in series with a resistor R4 and then grounded, and the resistor R4 is connected in parallel with a switch S1.
3. An AC charging gun CC signal circuit according to claim 1 or 2 wherein said resistor R1 is a variable resistor.
4. An ac charging gun CC signal circuit as claimed in claim 1 or 2 wherein the transistor Q1 is a PNP transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221898980.8U CN217741368U (en) | 2022-07-22 | 2022-07-22 | CC signal circuit of alternating current charging gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221898980.8U CN217741368U (en) | 2022-07-22 | 2022-07-22 | CC signal circuit of alternating current charging gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217741368U true CN217741368U (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221898980.8U Active CN217741368U (en) | 2022-07-22 | 2022-07-22 | CC signal circuit of alternating current charging gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217741368U (en) |
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2022
- 2022-07-22 CN CN202221898980.8U patent/CN217741368U/en active Active
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