CN210478420U - Universal charging pile auxiliary power supply identification and conversion circuit - Google Patents
Universal charging pile auxiliary power supply identification and conversion circuit Download PDFInfo
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- CN210478420U CN210478420U CN201921549739.2U CN201921549739U CN210478420U CN 210478420 U CN210478420 U CN 210478420U CN 201921549739 U CN201921549739 U CN 201921549739U CN 210478420 U CN210478420 U CN 210478420U
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
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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
- Y02T90/14—Plug-in electric vehicles
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model provides a commonality fills electric pile auxiliary power source discernment and converting circuit fills electric pile auxiliary power source's signal through reposition of redundant personnel and voltage stabilizing circuit, filter circuit, transmits for (vehicle control unit) VCU or (battery management system) BMS, through relay in (battery management system) BMS or (vehicle control unit) VCU mouth output control or direct control output awakens the main circuit that charges up. The utility model discloses change conventional thinking, only carry out signal sampling to filling electric pile auxiliary power supply, do not use any device of this power drive to through reposition of redundant personnel and voltage stabilizing circuit, filter circuit's setting, for (vehicle control unit) VCU or (battery management system) BMS provide stable signal input, reach the purpose that new forms of energy vehicle can both charge when filling electric pile auxiliary power supply DC12V or DC24V, realized commonality and reliability.
Description
Technical Field
The utility model belongs to fill electric pile and new energy vehicle conduction field of charging relates to a commonality fills electric pile auxiliary power source identification circuit.
Background
At present, when a pure electric vehicle EV, a hybrid electric vehicle HEV and a series-parallel hybrid electric vehicle are charged quickly by direct current, the vehicles are DC12V and (/ or) DC24V low-voltage systems, and the direct current charging piles DC12V and (/ or) DC24V are not matched, so that charging cannot be carried out.
At present, the electric automobile is according to GB/T20234.3-2015 connection device for electric automobile conduction charging part 3: the direct current charging interface provides that the charging auxiliary low-voltage output A + and A-are DC 0-30V; the large-tonnage vehicle is generally DC24V, the small-tonnage vehicle is DC12V, and the output auxiliary power supply of the charging pile is generally set to be DC12V or DC24V at present.
At present, there are two situations in charging pile through the circuit of conduction charging access new forms of energy vehicle. In the first case, as shown in fig. 1, the dc charging pile auxiliary power supply (a +, a-are the positive and negative poles of the charging pile auxiliary power supply) is directly introduced into the new energy vehicle through the diode, and the charging signal (the car VCU or BMS) is directly provided; in the second case, as shown in fig. 2, the relay in the vehicle is used for intermediate transition based on the first case, and the characteristic is that the charging pile auxiliary power supply (a +, a-is the positive and negative poles of the charging pile auxiliary power supply) is the control relay coil, and directly provides the charging signal (vehicle VCU or BMS), and transmits the signal and controls the power through the relay contact.
The circuit vehicle connected with the new energy vehicle through conduction charging has numerous electric appliances, even if unnecessary electric appliances can not work, a plurality of low-voltage devices of the vehicle need to work during charging, and the diode has large power load and is easy to heat and seriously damage; if the auxiliary low-voltage power supply of the vehicle is in a DC12V state, the condition that charging cannot be carried out can occur when the auxiliary power supply of the charging pile is in a DC24V state, and if charging is forced, the risk of damage to important electrical components (such as damage caused by overheating of an important high-voltage contactor) exists; on the contrary, if the auxiliary low-voltage power supply of the vehicle is in a DC24 state, and if the charging pile is in a DC12V state, some devices may not work due to the fact that the power supply voltage is too low, and if a high-voltage contactor of a power device is used, the devices may not be pulled in, and a related high-voltage circuit is closed, so that charging cannot be conducted.
Disclosure of Invention
In order to overcome current new energy vehicle and meet the vexed work that fills electric pile and can not charge, reach the new energy vehicle and can both charge when filling electric pile auxiliary power supply DC12V or DC24V the utility model provides a commonality fills electric pile auxiliary power source discernment and converting circuit, only carry out signal sampling, realize the commonality through (vehicle control unit) VCU or (battery management system) BMS to the auxiliary power source who fills electric pile.
The technical idea of the utility model is that: the signal of the charging pile auxiliary power supply is transmitted to a Vehicle Control Unit (VCU) or a Battery Management System (BMS) through a shunt and voltage stabilizing circuit and a filter circuit, and an in-vehicle relay is controlled through the output of a Battery Management System (BMS) or VCU port of the vehicle control unit (BMS) or the output is directly controlled to wake up a charging main circuit.
In order to achieve the purpose, the utility model discloses directly provide the signal of charging or use the relay to carry out the intermediate transition and provide the two kinds of circumstances of the signal of charging to prior art, adopt two kinds of following technical scheme.
The first technical scheme is as follows: the utility model provides a stake auxiliary power source discernment of commonality charging and converting circuit, includes vehicle control unit, battery management system, its characterized in that: the signal of the auxiliary power supply of the charging pile is transmitted to an input port of a VCU (virtual vehicle Unit) or an input port of a BMS (battery management system) through a shunt and voltage stabilizing circuit and a filter circuit, and the signal is judged through the VCU or the BMS; the VCU outputs a charging signal again to wake up the charging main circuit; or, the charging main circuit is awakened by the BMS outputting the charging signal again.
The second technical scheme is as follows: the utility model provides a stake auxiliary power source discernment of commonality fills and converting circuit, includes vehicle control unit or battery management system, its characterized in that: the signal of the auxiliary power supply of the charging pile is transmitted to an input port of a VCU (virtual vehicle Unit) or an input port of a BMS (battery management system) through a shunt and voltage stabilizing circuit and a filter circuit, and the signal is judged through the VCU or the BMS; the VCU is connected with a relay in the vehicle to output a charging signal, and the charging main circuit is awakened (and a power supply of a low-voltage system in the vehicle is provided for other electrical appliances, such as a BMS (battery management system) and instruments); or, the BMS is connected with the in-vehicle relay to output a charging signal, so that the main charging circuit is awakened (and the power of a low-voltage system in the vehicle is supplied to other electrical appliances, such as the BMS and the instrument).
The two technical schemes are further defined together: the shunt and voltage stabilizing circuit comprises a first shunt resistor, a divider resistor and a voltage stabilizing diode, wherein the divider resistor and the voltage stabilizing diode are connected in series to form a voltage stabilizing circuit; the resistor absorbs current, so that stable voltage output of the voltage stabilizing circuit is ensured, and electromagnetic coupling interference influence in the signal transmission process is reduced.
The two technical schemes are further defined together: the filter circuit comprises an RC filter circuit, and the RC filter circuit is connected with a second shunt resistor in parallel and serves as a capacitor charge leakage loop of the RC filter circuit, so that the stability and reliability of the filtered signal are further ensured, and the vehicle control unit or the battery management system receives a more stable input signal.
The two technical schemes are further defined together: the digital filtering module is arranged in the VCU or the BMS, and the digital filtering module is adopted under the condition that the analog quantity filtering is insufficient, so that the reliability is further improved.
The utility model has the advantages that: the utility model discloses change conventional thinking, only carry out signal sampling to filling electric pile auxiliary power supply, do not use any device of this power drive, and through reposition of redundant personnel and voltage stabilizing circuit, filter circuit's setting, for (vehicle control unit) VCU or (battery management system) BMS provide stable signal input, the realization is DC12V or DC24V state insensitive to filling electric pile auxiliary power supply, reach the purpose that new energy vehicle can both charge when filling electric pile auxiliary power supply DC12V or DC24V, the adverse effect that electric pile auxiliary power supply led to the fact the new energy vehicle among the prior art has been overcome completely, commonality and reliability have been realized.
Drawings
Fig. 1 is a schematic diagram of a charging pile access circuit in the prior art.
Fig. 2 is a schematic diagram of another charging pile access circuit in the prior art (with an in-vehicle relay).
Fig. 3 is a circuit block diagram of an embodiment of the present invention.
Fig. 4 is a schematic circuit diagram of an embodiment of the present invention.
Fig. 5 is a circuit block diagram (with in-vehicle relay) of another embodiment of the present invention.
Fig. 6 is a schematic circuit diagram (with in-vehicle relay) of another embodiment of the present invention.
Detailed Description
As shown in fig. 3, which is an embodiment of the present invention, a universal charging pile auxiliary power source identification and conversion circuit includes a vehicle control unit or a battery management system, wherein a signal of the charging pile auxiliary power source (a +, a-is a positive electrode and a negative electrode of the charging pile auxiliary power source) is transmitted to an input port of a VCU or an input port of a BMS through a shunt and voltage stabilizing circuit and a filter circuit, and the signal is judged by the VCU or the BMS; the VCU outputs a charging signal to the BMS, the charging main circuit is awakened through the BMS, and other electrical appliances such as the BMS and instruments in the charging process are awakened; or, the BMS outputs the charging signal to the VCU, the VCU wakes up the charging main circuit, and other electrical appliances such as the BMS and the meters in the charging process are simultaneously woken up.
As shown in fig. 5, it is another embodiment (with in-vehicle relay) of the present invention, a universal charging pile auxiliary power source identification and conversion circuit, including a vehicle control unit or a battery management system, signals of the charging pile auxiliary power source (a +, a-is charging pile auxiliary power source positive and negative electrodes) are transmitted to the input port of the VCU or the input port of the BMS through a shunt and voltage stabilizing circuit and a filter circuit, and the signals are judged by the VCU or the BMS; the VCU is connected with an in-vehicle relay K1 to output a charging signal to the BMS, awakens the charging main circuit (can provide energy power) and provides power of a low-voltage system in the vehicle to other electrical appliances such as the BMS and instruments; or, the BMS is used for switching on the in-vehicle relay K1 to output a charging signal to the VCU, so that the charging main circuit is awakened (can provide energy power) and the power of a low-voltage system in the vehicle is provided for other electric appliances, such as the BMS and the meters.
As shown in FIG. 4, the signal of the auxiliary power supply of the charging pile (A1 +, A2+ is the anode of the auxiliary power supply of the charging pile, A1-A2-is the cathode of the auxiliary power supply of the charging pile) is transmitted to the input port of the VCU or the input port of the BMS through a shunt and voltage stabilizing circuit and a filter circuit.
As shown in fig. 6, the signal of the auxiliary power supply of the charging pile (a 1+, a2+ is the positive pole of the auxiliary power supply of the charging pile, and a1-, a 2-is the negative pole of the auxiliary power supply of the charging pile) is transmitted to the input port of the VCU or the input port of the BMS through a shunt and voltage regulator circuit and a filter circuit.
As shown in fig. 4 and 6, the two embodiments of the present invention have the same shunt and voltage stabilizing circuit;
the shunt and voltage stabilizing circuit comprises a first shunt resistor R1, a voltage dividing resistor R2 and a voltage stabilizing diode D1, wherein the voltage dividing resistor R2 and the voltage stabilizing diode D1 are connected in series to form a voltage stabilizing circuit, the shunt resistor R1 is connected in parallel with the voltage stabilizing circuit, and the shunt resistor R1 forms a shunt circuit; the resistor R1 absorbs current, so that the stable voltage output of the voltage stabilizing circuit is ensured, and the electromagnetic coupling interference influence in the signal transmission process is reduced.
As shown in fig. 4 and 6, the two embodiments of the present invention have the same filter circuit; the filter circuit comprises an RC filter circuit, wherein the RC filter circuit is formed by a resistor R3, a capacitor C1 and a capacitor C2, the capacitor C1 is an electrolytic capacitor, and the capacitor C2 is a high-frequency capacitor; further, compared with a further innovation mode in the prior art, the RC filter circuit is connected in parallel with a second shunt resistor R4, and the second shunt resistor R4 is used as a charge leakage loop of a capacitor (capacitor C1 and capacitor C2) of the RC filter circuit, so that the stability and reliability of the filtered signal are further ensured, and the (vehicle control unit) VCU or (battery management system) BMS receives a more stable input signal.
As shown in fig. 3-6, it can be seen that: signals of the charging pile auxiliary power supply are transmitted to an input port of the VCU through the shunt and voltage stabilizing circuit and the filter circuit, and then the BMS wakes up the charging main circuit necessarily; and vice versa.
As shown in fig. 4 and 6, the manual power main switch and the low-voltage battery are expressed as the connection state of the charging main circuit.
As shown in fig. 4 and 6, the diode D2 and the diode D3 are connected to an output circuit of the charging pile auxiliary power supply, and belong to a charging pile auxiliary power supply part, and the diode D2 and the diode D3 ensure that the positive output voltage of the charging pile auxiliary power supply is only led to a VCU or a BMS; if the voltages are opposite, the diodes D2 and D3 bear all reverse voltages, and the VCU or BMS input port is protected.
In the present invention, the resistance of the second shunt resistor R4 is greater than or equal to 5 times the sum of the resistance of the shunt resistor R2 and the resistance of the resistor R3.
Further common limitations to both of the above embodiments are: the digital filtering module is arranged in the VCU or the BMS, and the digital filtering module is adopted under the condition that the analog quantity filtering is insufficient, so that the reliability is further improved.
The core of the utility model lies in: the charging pile auxiliary power supply signal is received instead of requesting power from the charging pile auxiliary power supply, so that a charging main circuit is awakened, the problem of conversion of DC12V and DC24V devices is solved, BMS or VCU output drive is an internal power supply of the whole vehicle and is unrelated to the voltage of the charging pile auxiliary power supply, the universality of vehicle charging is improved, and the trouble that the charging pile cannot be charged when meeting is reduced.
For those skilled in the art, simple combination, equivalent replacement, and further improvement without departing from the technical concept of the present invention shall be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a stake auxiliary power source discernment of commonality charging and converting circuit, includes vehicle control unit, battery management system, its characterized in that: the signal of the auxiliary power supply of the charging pile is transmitted to an input port of a VCU (virtual vehicle Unit) or an input port of a BMS (battery management system) through a shunt and voltage stabilizing circuit and a filter circuit, and the signal is judged through the VCU or the BMS; the VCU outputs a charging signal again to wake up the charging main circuit; or, the charging main circuit is awakened by the BMS outputting the charging signal again.
2. The circuit of claim 1, wherein the circuitry for identifying and converting the auxiliary power source of the universal charging pile comprises: the shunt and voltage stabilizing circuit comprises a first shunt resistor, a divider resistor and a voltage stabilizing diode, wherein the divider resistor and the voltage stabilizing diode are connected in series to form a voltage stabilizing circuit, the shunt resistor is connected with the voltage stabilizing circuit in parallel, and the shunt resistor forms a shunt circuit.
3. The circuit for identifying and converting an auxiliary power supply of a universal charging pile according to claim 1 or 2, wherein: the filter circuit comprises an RC filter circuit, and a second shunt resistor is connected in parallel with the RC filter circuit and is used as a capacitance charge leakage loop of the RC filter circuit.
4. The circuit of claim 3, wherein the circuitry for identifying and converting the auxiliary power source of the universal charging pile comprises: the VCU or the BMS is internally provided with a digital filtering module.
5. The utility model provides a stake auxiliary power source discernment of commonality fills and converting circuit, includes vehicle control unit or battery management system, its characterized in that: the signal of the auxiliary power supply of the charging pile is transmitted to an input port of a VCU (virtual vehicle Unit) or an input port of a BMS (battery management system) through a shunt and voltage stabilizing circuit and a filter circuit, and the signal is judged through the VCU or the BMS; the VCU is connected with a relay in the vehicle to output a charging signal, and a charging main circuit is awakened; or, the relay in the vehicle is switched on again through the BMSDevice for cleaning the skinAnd outputting a charging signal to wake up the charging main circuit.
6. The circuit of claim 5, wherein the circuitry for identifying and converting the auxiliary power source of the universal charging pile comprises: the shunt and voltage stabilizing circuit comprises a first shunt resistor, a divider resistor and a voltage stabilizing diode, wherein the divider resistor and the voltage stabilizing diode are connected in series to form a voltage stabilizing circuit, the shunt resistor is connected with the voltage stabilizing circuit in parallel, and the shunt resistor forms a shunt circuit.
7. The circuit of claim 5 or 6, wherein the circuit comprises: the filter circuit comprises an RC filter circuit, and a second shunt resistor is connected in parallel with the RC filter circuit and is used as a capacitance charge leakage loop of the RC filter circuit.
8. The circuit of claim 7, wherein the circuitry for identifying and converting the auxiliary power source of the universal charging pile comprises: the VCU or the BMS is internally provided with a digital filtering module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921549739.2U CN210478420U (en) | 2019-09-18 | 2019-09-18 | Universal charging pile auxiliary power supply identification and conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921549739.2U CN210478420U (en) | 2019-09-18 | 2019-09-18 | Universal charging pile auxiliary power supply identification and conversion circuit |
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| Publication Number | Publication Date |
|---|---|
| CN210478420U true CN210478420U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921549739.2U Withdrawn - After Issue CN210478420U (en) | 2019-09-18 | 2019-09-18 | Universal charging pile auxiliary power supply identification and conversion circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450662A (en) * | 2019-09-18 | 2019-11-15 | 东风华神汽车有限公司 | A kind of identification of versatility charging pile accessory power supply and conversion circuit |
| CN112277727A (en) * | 2020-10-22 | 2021-01-29 | 奇瑞新能源汽车股份有限公司 | Charging control circuit and charging control method |
-
2019
- 2019-09-18 CN CN201921549739.2U patent/CN210478420U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450662A (en) * | 2019-09-18 | 2019-11-15 | 东风华神汽车有限公司 | A kind of identification of versatility charging pile accessory power supply and conversion circuit |
| CN110450662B (en) * | 2019-09-18 | 2024-10-08 | 东风华神汽车有限公司 | Auxiliary power supply identification and conversion circuit for universal charging pile |
| CN112277727A (en) * | 2020-10-22 | 2021-01-29 | 奇瑞新能源汽车股份有限公司 | Charging control circuit and charging control method |
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Granted publication date: 20200508 Effective date of abandoning: 20241008 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200508 Effective date of abandoning: 20241008 |