CN114083986A - Automobile high-voltage controller capable of independently controlling upper power supply and control method thereof - Google Patents
Automobile high-voltage controller capable of independently controlling upper power supply and control method thereof Download PDFInfo
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- CN114083986A CN114083986A CN202010768248.8A CN202010768248A CN114083986A CN 114083986 A CN114083986 A CN 114083986A CN 202010768248 A CN202010768248 A CN 202010768248A CN 114083986 A CN114083986 A CN 114083986A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 91
- 230000001815 facial effect Effects 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims description 35
- 238000010586 diagram Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an electric automobile high-voltage controller capable of independently controlling the power supply of an upper device and a control method thereof, wherein the high-voltage controller comprises: the insulation detector and the upper motor driving circuit are arranged; the insulation detector is connected between the anode and the cathode of the power battery; the upper motor driving circuit comprises an upper contactor, an upper pre-charging circuit and an upper interface; the input end of the upper contactor is connected with the positive end of the power battery, the output end of the upper contactor is connected with the positive end of the upper interface, and the negative end of the upper interface is connected with the negative end of the power battery; when the insulation detector detects that the vehicle has insulation faults of more than three levels, the vehicle control unit controls the upper device to independently supply power. This application can realize the independent power supply of electric automobile facial make-up part, when electric fault appears in the facial make-up, keeps apart facial make-up circuit and main car circuit, and when electric fault appears in especially trucd mixer, can realize cutting trouble circuit, for the trucd mixer supplies power alone, avoids a jar body to solidify.
Description
Technical Field
The invention belongs to the technical field of high-voltage electric appliances of new energy automobiles, and particularly relates to an electric automobile high-voltage controller capable of independently controlling upper power supply and a control method thereof.
Background
At present, the voltage of a power system of an electric truck is generally between rated 530VDC and 600VDC and is far higher than the human body safety voltage, and due to the consideration of personnel and equipment safety, when a high-voltage system has a fault of more than 3 levels, the system can protectively disconnect a high-voltage power supply from a power transmission system; in the process of transportation and use of the loading type of the electric cement mixer truck and the like, if a high-voltage power supply is cut off due to an insulation fault, and the loading stops working for a long time, a great risk is caused, for example, materials in a tank body of the electric cement mixer truck are in a risk of condensation, and if the loading type of the electric driving loading type of the sanitation truck, the professional maintenance truck and the like is in an electric fault, a loading circuit cannot be isolated from a main vehicle circuit, so that the running function of the vehicle is influenced.
Disclosure of Invention
The invention aims to provide an electric automobile high-voltage controller capable of independently controlling the upper circuit to supply power, namely, a control circuit is designed in an integrated controller to control the upper circuit and a main circuit to supply power respectively and independently when a vehicle is in a fault state, so that mutual influence between the upper circuit and the main circuit is avoided.
The technical scheme adopted by the invention is as follows:
in a first aspect, a high voltage controller for an electric vehicle, capable of independently controlling power supply of an upper device, comprises: the insulation detector and the upper motor driving circuit are arranged;
the insulation detector is connected between the anode and the cathode of the power battery;
the upper motor driving circuit comprises an upper contactor, an upper pre-charging circuit and an upper interface; the input end of the upper contactor is connected with the positive end of the power battery, the output end of the upper contactor is connected with the positive end of the upper interface, and the negative end of the upper interface is connected with the negative end of the power battery;
when the insulation detector detects that the vehicle has insulation faults more than three levels, the vehicle controller controls the whole vehicle to be electrified under high voltage and controls the upper contactor to be closed, so that the upper motor driving circuit is closed, and insulation detection is carried out again:
if the insulation detector detects an insulation fault, the vehicle control unit controls the upper-mounted contactor to be disconnected, so that the upper-mounted motor driving circuit is cut off;
if insulation detector detects no insulation fault, then vehicle control unit control the disconnection of facial make-up contactor to control BMS main contactor is closed, carries out insulation detection once more:
if the insulation detector detects the insulation fault again, the vehicle control unit controls the upper-mounted contactor to keep a disconnection state, so that the upper-mounted motor driving circuit is disconnected;
and if the insulation detector detects no insulation fault, the vehicle control unit controls the upper device to independently supply power.
Preferably, the electric vehicle high-voltage controller capable of independently controlling the upper assembly to supply power further comprises a main driving motor circuit for independently supplying power to the main driving motor and an auxiliary equipment driving circuit for independently supplying power to auxiliary equipment; the main driving motor circuit and the auxiliary equipment driving circuit are respectively and independently connected between the anode and the cathode of the power battery.
Preferably, the main driving motor circuit comprises a main machine contactor and a driving motor interface, the input end of the main machine contactor is connected to the positive end of the power battery, the output end of the main machine contactor is connected to the positive end of the driving motor interface, and the negative end of the driving motor interface is connected to the negative end of the power battery.
Preferably, auxiliary assembly drive circuit includes auxiliary machine contactor, auxiliary machine control module and auxiliary machine interface, the input of auxiliary machine contactor inserts the power battery positive pole end, the output of auxiliary machine contactor with auxiliary machine control module links to each other, auxiliary machine control module inserts power battery negative pole end, each the auxiliary machine interface all inserts auxiliary machine control module.
Preferably, but above-mentioned electric automobile high voltage controller of independent control facial make-up power supply still includes and inserts respectively main drive motor circuit auxiliary equipment drive circuit reaches three pre-charge circuit of group of facial make-up motor drive circuit, three group pre-charge circuit all includes pre-charge contactor and pre-charge resistance of establishing ties, three group pre-charge contactor all inserts the power battery positive terminal, three group pre-charge resistance respectively with the output of host computer contactor the output of auxiliary machine contactor reaches the output of facial make-up contactor links to each other.
Preferably, the vehicle control unit controls to independently supply power to the upper vehicle, and includes:
the vehicle control unit controls the pre-charging contactor to be closed for pre-charging, after the pre-charging is finished, the vehicle control unit controls the pre-charging contactor in the upper motor driving circuit to be opened and the upper contactor to be closed, and the upper contactor is electrified to work.
Preferably, the upper motor driving circuit further comprises a voltage detection module, and the voltage detection module is connected in parallel between the positive electrode and the negative electrode of the upper interface;
the voltage detection module sends a detection signal to the vehicle control unit, when the vehicle control unit receives that the voltage value fed back by the voltage detection module is larger than or equal to 90% of the rated voltage of the power battery, the pre-charging is finished, and the vehicle control unit controls the pre-charging contactor in the upper-mounted motor driving circuit to be opened and the upper-mounted contactor to be closed.
Preferably, the main driving motor circuit, the auxiliary device driving circuit and the upper motor driving circuit are all connected with fuses.
Preferably, the two ends of the host contactor are connected in parallel to the adhesion detection module.
In another aspect, a control method of the high voltage controller includes
When the insulation detector detects that the vehicle has insulation faults more than three levels, the vehicle controller controls the whole vehicle to be electrified under high voltage and controls the upper contactor to be closed, so that the upper motor driving circuit is closed, and insulation detection is carried out again:
if the insulation detector detects an insulation fault, the vehicle control unit controls the upper-mounted contactor to be disconnected, so that the upper-mounted motor driving circuit is cut off;
if insulation detector detects no insulation fault, then vehicle control unit control the disconnection of facial make-up contactor to control BMS main contactor is closed, carries out insulation detection once more:
if the insulation detector detects the insulation fault again, the vehicle control unit controls the upper-mounted contactor to keep a disconnection state, so that the upper-mounted motor driving circuit is disconnected;
and if the insulation detector detects no insulation fault, the vehicle control unit controls the upper device to independently supply power.
Compared with the prior art, the invention has the following beneficial technical effects:
the control circuit of the high-voltage controller can realize independent power supply of the upper part of the electric automobile, and can control the drive circuit of the upper part machine to be independently electrified to drive the upper part electrical appliance system to work when the high-voltage power supply is cut off due to an insulation fault, so that the risk problem caused by long-time stop of the upper part machine is avoided;
this application is through designing main driving motor circuit, auxiliary assembly drive circuit and facial make-up motor drive circuit triplex circuit, make integrated controller divide into independent triplex supply circuit with whole car distribution circuit, when insulating trouble cuts off high voltage power supply, whole car controller can control main driving motor circuit and auxiliary assembly drive circuit and go up the electricity alone respectively to carry out insulation detection, thereby when electrical trouble appears in facial make-up, keep apart facial make-up circuit and main car circuit, guarantee that the vehicle function of traveling is not influenced.
Drawings
Fig. 1 is a schematic diagram of a high-voltage electrical apparatus of a high-voltage integrated controller according to the present invention;
fig. 2 is a schematic position diagram of the upper loop voltage detection module provided by the present invention.
Fig. 3 is a schematic diagram of a secondary power-on process of the upper assembly according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solution of the present invention will be explained with reference to specific embodiments.
Example 1
As shown in fig. 1 to 3, a high voltage controller for an electric vehicle capable of individually controlling an on-board power supply includes: the insulation detector and the upper motor driving circuit are arranged;
the insulation detector is connected between the anode and the cathode of the power battery;
the upper motor driving circuit comprises an upper contactor and an upper interface; the input end of the upper contactor is connected with the positive end of the power battery, the output end of the upper contactor is connected with the positive end of the upper interface, and the negative end of the upper interface is connected with the negative end of the power battery;
when the insulation detector detects that the vehicle has insulation faults more than three levels, the vehicle controller controls the whole vehicle to be electrified under high voltage and controls the upper contactor to be closed, so that the upper motor driving circuit is closed, and insulation detection is carried out again:
if the insulation detector detects an insulation fault, the vehicle control unit controls the upper-mounted contactor to be disconnected, so that the upper-mounted motor driving circuit is cut off;
if insulation detector detects no insulation fault, then vehicle control unit control the disconnection of facial make-up contactor to control BMS main contactor is closed, carries out insulation detection once more:
if the insulation detector detects the insulation fault again, the vehicle control unit controls the upper-mounted contactor to keep a disconnection state, so that the upper-mounted motor driving circuit is disconnected;
and if the insulation detector detects no insulation fault, the vehicle control unit controls the upper device to independently supply power.
The control circuit of the high-voltage controller is designed, so that independent power supply of an upper mounting part of an electric automobile can be realized, when an insulation fault occurs and a high-voltage power supply is cut off, the whole automobile controller firstly controls the upper mounting machine driving circuit to be independently powered on and carries out insulation detection, if the insulation fault is detected again, the upper mounting machine driving circuit has a fault, the upper mounting machine cannot be powered on at the moment, and if no insulation fault exists, the upper mounting machine driving circuit is normal; then still need detect battery inner circuit, also closed BMS main contactor promptly, if there is the trouble in the battery inner circuit, also can not make the facial make-up power supply work this moment, if the battery inner circuit does not have the trouble, then explain that battery inner circuit and facial make-up motor drive circuit are all normal, alright supply power for facial make-up interface alone power up this moment, drive facial make-up electrical system work, avoid facial make-up long-time stop work risk problem that causes.
In an implementation manner, the electric vehicle high-voltage controller further comprises a main driving motor circuit for independently supplying power to the main driving motor and an auxiliary equipment driving circuit for independently supplying power to auxiliary equipment; the main driving motor circuit and the auxiliary equipment driving circuit are respectively and independently connected between the anode and the cathode of the power battery.
The independent design of the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit enables the integrated controller to divide the whole vehicle power distribution circuit into three independent power supply circuits, so that the three independent power supply of the circuits is realized, wherein the main driving motor circuit and the auxiliary equipment driving circuit are consistent with the control circuit principle of the upper motor driving circuit; when an insulation fault occurs and a high-voltage power supply is cut off, the vehicle control unit can control the main driving motor circuit and the auxiliary equipment driving circuit to be independently powered on and carry out insulation detection, for example, when the controller is used for a vehicle model such as an environmental sanitation vehicle with electric drive upper-loading and a professional maintenance vehicle, the upper-loading circuit is isolated from the main vehicle circuit when the upper-loading has an electrical fault, and the running function of the vehicle is not influenced.
Specifically, the main driving motor circuit comprises a main machine contactor and a driving motor interface, wherein the input end of the main machine contactor is connected to the positive end of the power battery, the output end of the main machine contactor is connected to the positive end of the driving motor interface, and the negative end of the driving motor interface is connected to the negative end of the power battery; the auxiliary device drive circuit comprises an auxiliary device contactor, an auxiliary device control module and an auxiliary device interface, wherein the input end of the auxiliary device contactor is connected to the positive end of the power battery, the output end of the auxiliary device contactor is connected to the auxiliary device control module, the auxiliary device control module is connected to the negative end of the power battery, and the auxiliary device interface is connected to the auxiliary device control module.
In an implementation manner, the electric vehicle high-voltage controller further includes three groups of pre-charging circuits respectively connected to the main driving motor circuit, the auxiliary device driving circuit and the upper motor driving circuit, each of the three groups of pre-charging circuits includes a pre-charging contactor and a pre-charging resistor connected in series, each of the three groups of pre-charging contactors is connected to the positive terminal of the power battery, and each of the three groups of pre-charging resistors is respectively connected to the output terminal of the main machine contactor, the output terminal of the auxiliary device contactor and the output terminal of the upper charging contactor; the design of the three groups of pre-charging circuits can ensure that the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit can realize respective pre-charging processes when the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit are independently powered.
After the pre-charging circuit is matched, the vehicle control unit controls the upper device to independently supply power, and the method specifically comprises the following steps:
the vehicle control unit controls the pre-charging contactor to be closed for pre-charging, after the pre-charging is finished, the vehicle control unit controls the pre-charging contactor in the upper motor driving circuit to be opened and the upper contactor to be closed, and the upper contactor is electrified to work.
In addition, the upper motor driving circuit further comprises a voltage detection module, and the voltage detection module is connected between the positive electrode and the negative electrode of the upper interface in parallel;
the voltage detection module sends a detection signal to the vehicle control unit, when the vehicle control unit receives that the voltage value fed back by the voltage detection module is larger than or equal to 90% of the rated voltage of the power battery, the pre-charging is finished, and the vehicle control unit controls the pre-charging contactor in the upper-mounted motor driving circuit to be opened and the upper-mounted contactor to be closed.
The voltage monitoring to the pre-charging process can be realized by the arrangement of the voltage detection module, the upper-mounted contactor is closed after the pre-charging is successfully completed, and power is supplied to the upper-mounted motor, so that the upper-mounted contactor can work normally and safely after the pre-charging is finished.
Furthermore, in order to improve the safety of each circuit, fuses are connected to the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit.
Furthermore, the two ends of the host contactor are connected with the adhesion detection module in parallel, when the host contactor is adhered, an alarm can be sent to the whole vehicle controller in a low-voltage state of the whole vehicle, and the situation that the power cannot be cut off or the circuit is directly connected without a pre-charging process to generate impact current to damage equipment is avoided.
Example 2
A control method of the high-voltage controller of embodiment 1, comprising:
when the insulation detector detects that the vehicle has insulation faults more than three levels, the vehicle controller controls the whole vehicle to be electrified under high voltage and controls the upper contactor to be closed, so that the upper motor driving circuit is closed, and insulation detection is carried out again:
if the insulation detector detects an insulation fault, the vehicle control unit controls the upper-mounted contactor to be disconnected, so that the upper-mounted motor driving circuit is cut off;
if insulation detector detects no insulation fault, then vehicle control unit control the disconnection of facial make-up contactor to control BMS main contactor is closed, carries out insulation detection once more:
if the insulation detector detects the insulation fault again, the vehicle control unit controls the upper-mounted contactor to keep a disconnection state, so that the upper-mounted motor driving circuit is disconnected;
and if the insulation detector detects no insulation fault, the vehicle control unit controls the upper device to independently supply power.
The embodiments given above are preferable examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical characteristics of the technical scheme of the invention by a person skilled in the art belong to the protection scope of the invention.
Claims (10)
1. An electric automobile high voltage controller capable of independently controlling the upper power supply is characterized by comprising: the insulation detector and the upper motor driving circuit are arranged;
the insulation detector is connected between the anode and the cathode of the power battery;
the upper motor driving circuit comprises an upper contactor and an upper interface; the input end of the upper contactor is connected with the positive end of the power battery, the output end of the upper contactor is connected with the positive end of the upper interface, and the negative end of the upper interface is connected with the negative end of the power battery;
when the insulation detector detects that the vehicle has insulation faults more than three levels, the vehicle controller controls the whole vehicle to be electrified under high voltage and controls the upper contactor to be closed, so that the upper motor driving circuit is closed, and insulation detection is carried out again:
if the insulation detector detects an insulation fault, the vehicle control unit controls the upper-mounted contactor to be disconnected, so that the upper-mounted motor driving circuit is cut off;
if insulation detector detects no insulation fault, then vehicle control unit control the disconnection of facial make-up contactor to control BMS main contactor is closed, carries out insulation detection once more:
if the insulation detector detects the insulation fault again, the vehicle control unit controls the upper-mounted contactor to keep a disconnection state, so that the upper-mounted motor driving circuit is disconnected;
and if the insulation detector detects no insulation fault, the vehicle control unit controls the upper device to independently supply power.
2. The electric vehicle high-voltage controller capable of independently controlling the power supply of the upper assembly according to claim 1, further comprising a main driving motor circuit for independently supplying power to a main driving motor and an auxiliary driving circuit for independently supplying power to an auxiliary; the main driving motor circuit and the auxiliary equipment driving circuit are respectively and independently connected between the anode and the cathode of the power battery.
3. The high voltage controller of an electric vehicle capable of independently controlling power supply on top of claim 2, wherein the main driving motor circuit comprises a main machine contactor and a driving motor interface, an input end of the main machine contactor is connected to a positive end of the power battery, an output end of the main machine contactor is connected to a positive end of the driving motor interface, and a negative end of the driving motor interface is connected to a negative end of the power battery.
4. The electric vehicle high-voltage controller capable of independently controlling power supply on top is characterized in that the auxiliary device driving circuit comprises an auxiliary device contactor, an auxiliary device control module and an auxiliary device interface, wherein the input end of the auxiliary device contactor is connected to the positive end of the power battery, the output end of the auxiliary device contactor is connected to the auxiliary device control module, the auxiliary device control module is connected to the negative end of the power battery, and each auxiliary device interface is connected to the auxiliary device control module.
5. The separately controllable top-loading power supply electric vehicle high voltage controller according to claim 4, further comprising three groups of pre-charging circuits respectively connected to the main driving motor circuit, the auxiliary device driving circuit and the top-loading motor driving circuit, wherein the three groups of pre-charging circuits each comprise a pre-charging contactor and a pre-charging resistor connected in series, the three groups of pre-charging contactors are connected to the positive terminal of the power battery, and the three groups of pre-charging resistors are respectively connected to the output terminal of the main machine contactor, the output terminal of the auxiliary device contactor and the output terminal of the top-loading contactor.
6. The individually controllable power-on-board high voltage controller of an electric vehicle according to claim 5,
the vehicle control unit control give go up and adorn independent power supply, include:
the vehicle control unit controls the pre-charging contactor to be closed for pre-charging, after the pre-charging is finished, the vehicle control unit controls the pre-charging contactor in the upper motor driving circuit to be opened and the upper contactor to be closed, and the upper contactor is electrified to work.
7. The electric vehicle high-voltage controller capable of independently controlling power supply of the upper assembly according to claim 6, wherein the upper assembly motor driving circuit further comprises a voltage detection module, and the voltage detection module is connected in parallel between a positive electrode and a negative electrode of the upper assembly interface;
the voltage detection module sends a detection signal to the vehicle control unit, when the vehicle control unit receives that the voltage value fed back by the voltage detection module is larger than or equal to 90% of the rated voltage of the power battery, the pre-charging is finished, and the vehicle control unit controls the pre-charging contactor in the upper-mounted motor driving circuit to be opened and the upper-mounted contactor to be closed.
8. The separately controllable top-mounted power supply electric vehicle high voltage controller according to claim 2, wherein fuses are connected to the main driving motor circuit, the auxiliary device driving circuit and the top-mounted motor driving circuit.
9. The electric vehicle high-voltage controller capable of being independently controlled to be supplied with power through an upper assembly according to claim 3, wherein two ends of the main machine contactor are connected in parallel to an adhesion detection module.
10. A control method of a high-voltage controller according to any one of claims 1 to 9, comprising:
when the insulation detector detects that the vehicle has insulation faults more than three levels, the vehicle controller controls the whole vehicle to be electrified under high voltage and controls the upper contactor to be closed, so that the upper motor driving circuit is closed, and insulation detection is carried out again:
if the insulation detector detects an insulation fault, the vehicle control unit controls the upper-mounted contactor to be disconnected, so that the upper-mounted motor driving circuit is cut off;
if insulation detector detects no insulation fault, then vehicle control unit control the disconnection of facial make-up contactor to control BMS main contactor is closed, carries out insulation detection once more:
if the insulation detector detects the insulation fault again, the vehicle control unit controls the upper-mounted contactor to keep a disconnection state, so that the upper-mounted motor driving circuit is disconnected;
and if the insulation detector detects no insulation fault, the vehicle control unit controls the upper device to independently supply power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010768248.8A CN114083986B (en) | 2020-08-03 | 2020-08-03 | Automobile high-voltage controller capable of independently controlling uploading power supply and control method thereof |
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| CN202010768248.8A CN114083986B (en) | 2020-08-03 | 2020-08-03 | Automobile high-voltage controller capable of independently controlling uploading power supply and control method thereof |
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| CN114083986A true CN114083986A (en) | 2022-02-25 |
| CN114083986B CN114083986B (en) | 2023-12-29 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114083986B (en) | 2023-12-29 |
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