CN112636425B - Electric automobile fills CC soon, fills CC wake-up circuit slowly - Google Patents
Electric automobile fills CC soon, fills CC wake-up circuit slowly Download PDFInfo
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- CN112636425B CN112636425B CN202011520844.0A CN202011520844A CN112636425B CN 112636425 B CN112636425 B CN 112636425B CN 202011520844 A CN202011520844 A CN 202011520844A CN 112636425 B CN112636425 B CN 112636425B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a fast-charging CC and slow-charging CC wake-up circuit of an electric automobile, which comprises the following steps: the output end of the charging wake-up circuit is electrically connected with the input end of the power switch circuit; the output end of the power switch circuit is electrically connected with the direct-current power supply conversion circuit; the output end of the direct current power supply conversion circuit is respectively connected with the CC acquisition circuit and the MCU circuit to supply power to the CC acquisition circuit and the MCU circuit; the charging wake-up circuit receives the CC signal of the charging gun and then transmits a CC_OPEN signal to the power switch circuit; the CC acquisition circuit acquires a CC signal of the charging gun and transmits an AD_CC signal to the MCU control circuit; the MCU circuit transmits an ignition hold signal to the DC switch circuit. According to the invention, after the charging wake-up circuit is arranged to wake up the battery management system for a short time when the vehicle is charged, the ignition maintaining signal output by the MCU control circuit of the battery management system takes over wake-up until slow charging is finished, and the MCU stops outputting the ignition maintaining signal, so that the battery management system is powered down after the charging is finished.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to a fast-charging CC and slow-charging CC wake-up circuit of an electric automobile.
Background
According to the general requirement of the 1 st part of the GBT 18487.1-2015 electric conduction charging system, after the charging is finished, the BMS enters a sleep mode, and the following problems exist in the existing fast-charging CC and slow-charging CC wake-up circuit: 1. and when the charging function is abnormal, the BMS can not enter a working state, so that the charging start is failed, and the charging gun is repeatedly plugged and unplugged for many times, so that bad impressions can be caused to the client, and customer complaints and complaints are caused. 2. Ordinary CC awakens the circuit, only is responsible for waking up BMS, does not have the function of breaking, and after charging, if not extracting the rifle that charges, BMS will not get into sleep mode, and CC awakens the circuit and continuously wakes up battery management system, will probably cause electric automobile 12V lead acid battery to be deficient, and the vehicle can't start when the next time uses the vehicle, causes customer complain, complains.
Disclosure of Invention
The invention aims to provide a quick charge CC and slow charge CC wake-up circuit of an electric automobile, which is characterized in that after a battery management system is temporarily awakened by the charge wake-up circuit when a vehicle is charged, an ignition maintaining signal output by an MCU control circuit of the battery management system takes over wake-up until slow charge is finished, and the MCU stops outputting the ignition maintaining signal to realize the power-down function of the battery management system after the charging is finished; through triode Q11, after charging, BMS gets into sleep mode, prevents BMS ignition, avoids electric automobile 12V lead acid battery to lose power, and the customer is when using the vehicle next time, and the vehicle can't start.
In order to solve the technical problems, the invention is realized by the following technical scheme:
The invention relates to a fast-charging CC and slow-charging CC wake-up circuit of an electric automobile, which comprises a charging wake-up circuit, a power switch circuit, a direct-current power supply conversion circuit, a CC acquisition circuit and an MCU control circuit; the output end of the charging wake-up circuit is electrically connected with the input end of the power switch circuit; the output end of the power switch circuit is electrically connected with the direct-current power supply conversion circuit; the output end of the direct current power supply conversion circuit is respectively connected with the CC acquisition circuit and the MCU circuit to supply power to the CC acquisition circuit and the MCU circuit; the charging wake-up circuit transmits a CC_OPEN signal to the power switch circuit after receiving a CC signal of the charging gun; the CC acquisition circuit acquires a CC signal of the charging gun and transmits an AD_CC signal to the MCU control circuit; the MCU circuit transmits an ignition maintaining signal to the direct current switch circuit;
The charging wake-up circuit comprises a triode Q3; the emitter of the triode Q3 is connected with a 12V voltage source; the base electrode of the triode Q3 is respectively connected with the S_charge_CC end and the Q_charge_CC end of the charging gun; the base electrode of the triode Q3 is also connected in series with a resistor R22 to 12V voltage source; the collector electrode of the triode Q3 outputs a CC_OPEN signal to the power switch circuit;
After the charging wake-up circuit is connected to the charging gun, the S_charge_CC signal or the Q_charge_CC signal is connected, and the triode Q3 is conducted to transmit the CC_OPEN signal to the power switch circuit;
The power switch circuit comprises a triode Q11 and a triode Q12; the emitter of the triode Q11 is connected with the output end of the charging wake-up circuit; the collector electrode of the triode Q11 is connected with the base electrode of the triode Q12; the base electrode of the triode Q11 is connected with the collector electrode of the triode Q12;
The base electrode of the triode Q12 is also connected with the cathode of the diode D33; the anode of the diode D33 is connected in series with a resistor to the MCU control circuit; the MCU control circuit transmits a CC_OFF signal to the power switch circuit;
The collector of the triode Q12 is connected in series with a resistor R512 to the emitter of the triode Q11; two ends of the resistor R512 are connected with a capacitor in parallel; the emitter of the triode Q12 is grounded; a resistor R513 is connected in series between the emitter and the base of the triode Q12, and two ends of the resistor R513 are connected with a capacitor C512 in parallel; the triode Q11 and the triode Q12 form an interlocking circuit.
Further, the base of the transistor Q3 is connected in series with a resistor R20 and diodes D13 to s_charge_cc; the base of transistor Q3 is also coupled in series with a resistor R21 and diodes D14 through Q_CHARGE_CC.
Further, the collector of the triode Q3 is connected in series with a resistor R511 to the emitter of the triode Q11; a grounded capacitance C519 is connected between the resistor R511 and the emitter of the pole tube Q11.
Further, the triode Q3 and the triode Q11 are PNP triodes; the triode Q12 is an NPN triode.
Further, the s_charge_cc terminal and the q_charge_cc terminal of the charging gun are both grounded.
The invention has the following beneficial effects:
According to the invention, after the charging wake-up circuit is arranged to wake up the battery management system for a short time when the vehicle is charged, the ignition hold signal output by the MCU control circuit of the battery management system takes over wake-up until slow charging is finished, and the MCU stops outputting the ignition hold signal, so that the power-down function of the battery management system after the charging is finished is realized; through triode Q11, after charging, BMS gets into sleep mode, prevents BMS ignition, avoids electric automobile 12V lead acid battery to lose power, and the customer is when using the vehicle next time, and the vehicle can't start.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system block diagram of an electric vehicle fast charge CC and slow charge CC wake-up circuit;
Fig. 2 is a circuit diagram of a charge wake-up circuit and a power switching circuit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the invention discloses a fast-charging CC and slow-charging CC wake-up circuit of an electric vehicle, which comprises a charging wake-up circuit, a power switch circuit, a direct current power supply conversion circuit, a CC acquisition circuit and an MCU control circuit;
The output end of the charging wake-up circuit is electrically connected with the input end of the power switch circuit; the output end of the power switch circuit is electrically connected with the direct-current power supply conversion circuit and provides 12V direct current for the direct-current power supply conversion circuit; the output end of the direct current power supply conversion circuit is respectively connected with the CC acquisition circuit and the MCU circuit to supply power to the CC acquisition circuit and the MCU circuit;
The charging wake-up circuit receives the CC signal of the charging gun and then transmits a CC_OPEN signal to the power switch circuit;
The CC acquisition circuit acquires a CC signal of the charging gun and transmits an AD_CC signal to the MCU control circuit; the MCU circuit transmits an ignition maintaining signal to the direct current switch circuit;
As shown in fig. 2, the charging wake-up circuit includes a triode Q3; the emitter of the triode Q3 is connected with a 12V voltage source; the base electrode of the triode Q3 is respectively connected with the S_charge_CC end and the Q_charge_CC end of the charging gun; the base electrode of the triode Q3 is also connected in series with a resistor R22 to 12V voltage source; the collector electrode of the triode Q3 outputs a CC_OPEN signal to the power switch circuit; the base electrode of the triode Q3 is connected in series with a resistor R20 and diodes D13 to S_charge_CC, the anode of the diode D13 is connected with the resistor R20, and the cathode of the diode D13 is connected with the S_charge_CC; the base electrode of the triode Q3 is also connected in series with a resistor R21 and diodes D14 to Q_charge_CC, the anode of the diode D14 is connected with the resistor R21, and the cathode of the diode D14 is connected with the Q_charge_CC; the model numbers of the diode D13 and the diode D14 are BAS21; the S_charge_CC end and the Q_charge_CC end of the charging gun are both grounded ends; the S_charge_CC end and the Q_charge_CC end are both grounded modules connected in series with a resistor with the resistance value of 1KΩ;
After the charging wake-up circuit is connected to the charging gun, the S_charge_CC signal or the Q_charge_CC signal is connected, and the triode Q3 is conducted to transmit the CC_OPEN signal to the power switch circuit; when a client inserts a charging gun, the S_charge_CC signal/Q_charge_CC signal is accessed, the triode Q3 is opened, and the CC_OPEN voltage becomes high level;
The power switching circuit comprises a triode Q11 and a triode Q12; the emitter of the triode Q11 is connected with the output end of the charging wake-up circuit; the collector of the triode Q3 is connected in series with a resistor R511 to the emitter of the triode Q11; a grounding capacitor C519 is connected between the resistor R511 and the emitter electrode of the polar tube Q11; the collector of the triode Q11 is connected with the base of the triode Q12; the base electrode of the triode Q11 is connected with the collector electrode of the triode Q12;
the base electrode of the triode Q12 is also connected with the cathode of the diode D33; the anode of the diode D33 is connected in series with a resistor to the MCU control circuit; the MCU control circuit transmits a CC_OFF signal to the power switch circuit; the collector of the triode Q12 is connected in series with a resistor R512 to the emitter of the triode Q11; two ends of the resistor R512 are connected in parallel with a capacitor; the emitter of the triode Q12 is grounded; a resistor R513 is connected in series between the emitter and the base of the triode Q12, and two ends of the resistor R513 are connected with a capacitor C512 in parallel; transistor Q11 and transistor Q12 form an interlock circuit.
Wherein, triode Q3 and triode Q11 are PNP triodes; triode Q12 is an NPN triode; the resistances of the resistor R20, the resistor R21 and the resistor R511 are all 10kΩ.
Embodiment one: the embodiment is a circuit working principle of a fast charge CC and slow charge CC wake-up circuit of an electric automobile: when a client inserts a charging gun, an S_charge_CC signal/Q_charge_CC signal is connected, a triode Q3 is turned on, the CC_OPEN voltage becomes high level, a power switch circuit is turned on, the BMS starts to work, an ignition maintaining signal of the BMS is turned on after the BMS works, at the moment, an MCU control circuit turns on a CC_OFF signal, a triode Q12 is turned on, the CC_OPEN signal is turned from high level to low level, and CC ignition is completed. The effect of Q11 is, when charging is accomplished, and BMS gets into sleep mode, in order to prevent CC_OPEN from igniting the BMS again, continuously becomes the low level with CC_OPEN, avoids electric automobile 12V lead acid battery to lack the power, and the customer is at the next time when using the vehicle, and the vehicle can't start.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (5)
1. The quick-charge CC and slow-charge CC wake-up circuit of the electric automobile is characterized by comprising a charge wake-up circuit, a power switch circuit, a direct-current power supply conversion circuit, a CC acquisition circuit and an MCU control circuit;
The output end of the charging wake-up circuit is electrically connected with the input end of the power switch circuit; the output end of the power switch circuit is electrically connected with the direct-current power supply conversion circuit; the output end of the direct current power supply conversion circuit is respectively connected with the CC acquisition circuit and the MCU circuit to supply power to the CC acquisition circuit and the MCU circuit;
the charging wake-up circuit transmits a CC_OPEN signal to the power switch circuit after receiving a CC signal of the charging gun;
the CC acquisition circuit acquires a CC signal of the charging gun and transmits an AD_CC signal to the MCU control circuit; the MCU circuit transmits an ignition maintaining signal to the direct current switch circuit;
The charging wake-up circuit comprises a triode Q3; the emitter of the triode Q3 is connected with a 12V voltage source; the base electrode of the triode Q3 is respectively connected with the S_charge_CC end and the Q_charge_CC end of the charging gun; the base electrode of the triode Q3 is also connected in series with a resistor R22 to 12V voltage source; the collector electrode of the triode Q3 outputs a CC_OPEN signal to the power switch circuit;
After the charging wake-up circuit is connected to the charging gun, the S_charge_CC signal or the Q_charge_CC signal is connected, and the triode Q3 is conducted to transmit the CC_OPEN signal to the power switch circuit;
The power switch circuit comprises a triode Q11 and a triode Q12; the emitter of the triode Q11 is connected with the output end of the charging wake-up circuit; the collector electrode of the triode Q11 is connected with the base electrode of the triode Q12; the base electrode of the triode Q11 is connected with the collector electrode of the triode Q12;
The base electrode of the triode Q12 is also connected with the cathode of the diode D33; the anode of the diode D33 is connected in series with a resistor to the MCU control circuit; the MCU control circuit transmits a CC_OFF signal to the power switch circuit;
The collector of the triode Q12 is connected in series with a resistor R512 to the emitter of the triode Q11; two ends of the resistor R512 are connected with a capacitor in parallel; the emitter of the triode Q12 is grounded;
A resistor R513 is connected in series between the emitter and the base of the triode Q12, and two ends of the resistor R513 are connected in parallel with a capacitor C512.
2. The wake-up circuit for fast and slow charging of an electric vehicle according to claim 1, wherein a base of the triode Q3 is connected in series with a resistor R20 and diodes D13 to s_charge_cc;
the base of transistor Q3 is also coupled in series with a resistor R21 and diodes D14 through Q_CHARGE_CC.
3. The wake-up circuit for fast and slow charging of an electric vehicle according to claim 1, wherein a collector of the triode Q3 is connected in series with a resistor R511 to an emitter of the triode Q11; a grounded capacitance C519 is connected between the resistor R511 and the emitter of the pole tube Q11.
4. The wake-up circuit for fast and slow charging of an electric vehicle according to claim 1, wherein the transistor Q3 and the transistor Q11 are PNP transistors; the triode Q12 is an NPN triode.
5. The wake-up circuit of claim 1, wherein the terminals s_charge_cc and q_charge_cc of the charging gun are both grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520844.0A CN112636425B (en) | 2020-12-21 | 2020-12-21 | Electric automobile fills CC soon, fills CC wake-up circuit slowly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520844.0A CN112636425B (en) | 2020-12-21 | 2020-12-21 | Electric automobile fills CC soon, fills CC wake-up circuit slowly |
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| Publication Number | Publication Date |
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| CN112636425A CN112636425A (en) | 2021-04-09 |
| CN112636425B true CN112636425B (en) | 2024-06-04 |
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| CN202011520844.0A Active CN112636425B (en) | 2020-12-21 | 2020-12-21 | Electric automobile fills CC soon, fills CC wake-up circuit slowly |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466699B (en) * | 2021-06-24 | 2024-05-14 | 安徽锐能科技有限公司 | Slow-charge CC signal awakening and detecting circuit |
| CN115366710B (en) * | 2022-10-24 | 2022-12-27 | 沈阳宇龙新能源汽车有限公司 | New energy automobile self-adaptation control system that charges based on big data |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102017000714A1 (en) * | 2017-01-26 | 2018-07-26 | Borgward Trademark Holdings Gmbh | Method, battery management system and vehicle for charge-wake-up mode |
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| CN105515094A (en) * | 2015-12-04 | 2016-04-20 | 合肥工业大学 | Charging wake-up circuit of battery management system |
| CN206264804U (en) * | 2016-12-02 | 2017-06-20 | 华南理工大学 | A kind of battery management system auto sleep and the circuit for waking up |
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| CN112636425A (en) | 2021-04-09 |
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