CN114083986B - Automobile high-voltage controller capable of independently controlling uploading power supply and control method thereof - Google Patents
Automobile high-voltage controller capable of independently controlling uploading power supply and control method thereof Download PDFInfo
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- CN114083986B CN114083986B CN202010768248.8A CN202010768248A CN114083986B CN 114083986 B CN114083986 B CN 114083986B CN 202010768248 A CN202010768248 A CN 202010768248A CN 114083986 B CN114083986 B CN 114083986B
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- whole vehicle
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- 238000009413 insulation Methods 0.000 claims abstract description 92
- 238000001514 detection method Methods 0.000 claims description 35
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 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
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
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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
-
- 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
-
- 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 upper-part power supply and a control method thereof, wherein the high-voltage controller comprises the following components: an insulation detector and an upper motor driving circuit; 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 mounting contactor is connected with the positive end of the power battery, the output end of the upper mounting contactor is connected with the positive end of the upper mounting interface, and the negative end of the upper mounting interface is connected with the negative end of the power battery; when the insulation detector detects that the vehicle has more than three levels of insulation faults, the whole vehicle controller controls the independent power supply for the upper part. According to the electric vehicle power supply device, independent power supply of the electric vehicle loading part can be realized, when an electric fault occurs in loading, the loading circuit is isolated from the main vehicle circuit, and particularly when an electric fault occurs in a mixer, the fault circuit can be cut off, the independent power supply of the mixer tank is realized, and the tank body is prevented from solidifying.
Description
Technical Field
The invention belongs to the technical field of high-voltage appliances of new energy automobiles, and particularly relates to an electric automobile high-voltage controller capable of independently controlling uploading power supply and a control method thereof.
Background
The voltage of the power system of the existing electric truck is generally between rated 530VDC and 600VDC, which is far higher than the safety voltage of a human body, and the system can protectively disconnect the high-voltage power supply from the power transmission system when the high-voltage system has more than 3-level faults due to the consideration of personnel and equipment safety; in the process of transportation and use of the electric cement mixer truck and other loading truck types, if the high-voltage power supply is cut off due to insulation faults, the loading is stopped for a long time, so that a great risk is caused, for example, the materials in the tank body of the electric cement mixer truck have a condensation risk, and if the electric cement mixer truck is provided with an electric drive loading truck type such as an sanitation truck and a professional maintenance truck, the loading circuit and the main truck circuit cannot be isolated when the electric faults occur in the loading, so that the running function of the truck is influenced.
Disclosure of Invention
The invention aims to provide an electric automobile high-voltage controller capable of independently controlling upper-part power supply, namely a control circuit is designed in an integrated controller, so that a vehicle is in a fault state, and the upper-part circuit and a main vehicle circuit are controlled to independently supply power respectively, so that the mutual influence of the upper-part circuit and the main vehicle circuit is avoided.
The technical scheme adopted by the invention is as follows:
a first aspect provides an electric vehicle high voltage controller capable of individually controlling power supplied from an upper package, comprising: an insulation detector and an upper motor driving circuit;
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 mounting contactor is connected with the positive end of the power battery, the output end of the upper mounting contactor is connected with the positive end of the upper mounting interface, and the negative end of the upper mounting interface is connected with the negative end of the power battery;
when the insulation detector detects that the vehicle has more than three levels of insulation faults, the whole vehicle controller controls the whole vehicle to be electrified under high voltage, and controls the upper mounting contactor to be closed, so that the upper mounting motor driving circuit is closed, and insulation detection is performed again:
if the insulation detector detects an insulation fault, the whole vehicle controller controls the upper mounting contactor to be disconnected, so that the upper mounting motor driving circuit is disconnected;
if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper-mounted contactor to be opened, controls the BMS main contactor to be closed, and performs insulation detection again:
if the insulation fault is detected again by the insulation detector, the whole vehicle controller controls the upper mounting contactor to keep an off state, so that the upper mounting motor driving circuit is cut off;
and if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper part to independently supply power.
Preferably, the electric vehicle high-voltage controller capable of independently controlling the upper-part power supply 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 the 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, wherein the input end of the main machine contactor is connected with the positive end of the power battery, the output end of the main machine contactor is connected with the positive end of the driving motor interface, and the negative end of the driving motor interface is connected with the negative end of the power battery.
Preferably, the auxiliary equipment driving circuit comprises an auxiliary equipment contactor, an auxiliary equipment control module and auxiliary equipment interfaces, wherein the input end of the auxiliary equipment contactor is connected with the positive end of the power battery, the output end of the auxiliary equipment contactor is connected with the auxiliary equipment control module, the auxiliary equipment control module is connected with the negative end of the power battery, and each auxiliary equipment interface is connected with the auxiliary equipment control module.
Preferably, the electric automobile high-voltage controller capable of independently controlling the power supply of the upper package further comprises three groups of pre-charging circuits which are respectively connected into the main driving motor circuit, the auxiliary equipment driving circuit and the upper package motor driving circuit, wherein the three groups of pre-charging circuits comprise pre-charging contactors and pre-charging resistors which are connected in series, the three groups of pre-charging contactors are connected into the positive end of the power battery, and the three groups of pre-charging resistors are respectively connected with the output end of the main machine contactor, the output end of the auxiliary machine contactor and the output end of the upper package contactor.
Preferably, the whole vehicle controller controls to supply power to the upper part independently, and the method comprises the following steps:
and the whole vehicle controller controls the closing of the pre-charging contactor to perform pre-charging, and after the pre-charging is finished, the whole vehicle controller controls the opening of the pre-charging contactor and the closing of the upper charging contactor in the upper charging motor driving circuit, and the upper charging 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 anode and the cathode of the upper interface;
and the voltage detection module sends a detection signal to the whole vehicle controller, and when the whole vehicle controller receives that the voltage value fed back by the voltage detection module is more than or equal to 90% of the rated voltage of the power battery, the pre-charging is finished, and the whole vehicle controller controls the pre-charging contactor in the upper motor driving circuit to be opened and the upper contactor to be closed.
Preferably, the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit are connected with fuses.
Preferably, two ends of the host contactor are connected in parallel to the adhesion detection module.
Another aspect provides a control method of the high voltage controller, including
When the insulation detector detects that the vehicle has more than three levels of insulation faults, the whole vehicle controller controls the whole vehicle to be electrified under high voltage, and controls the upper mounting contactor to be closed, so that the upper mounting motor driving circuit is closed, and insulation detection is performed again:
if the insulation detector detects an insulation fault, the whole vehicle controller controls the upper mounting contactor to be disconnected, so that the upper mounting motor driving circuit is disconnected;
if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper-mounted contactor to be opened, controls the BMS main contactor to be closed, and performs insulation detection again:
if the insulation fault is detected again by the insulation detector, the whole vehicle controller controls the upper mounting contactor to keep an off state, so that the upper mounting motor driving circuit is cut off;
and if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper part to independently supply power.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the control circuit of the high-voltage controller, provided by the application, the independent power supply of the upper assembly part of the electric automobile can be realized, when an insulation fault occurs and a high-voltage power supply is cut off, the independent power supply of the upper assembly driving circuit can be controlled, the upper assembly electric appliance system is driven to work, and the risk problem caused by long-time stop of the upper assembly is avoided;
according to the integrated control system, the main driving motor circuit, the auxiliary equipment driving circuit and the upper mounting motor driving circuit are designed, the integrated controller divides the whole vehicle power distribution circuit into independent three-part power supply circuits, when an insulation fault occurs and a high-voltage power supply is cut off, the whole vehicle controller can control the main driving motor circuit and the auxiliary equipment driving circuit to be electrified independently respectively, insulation detection is carried out, and therefore when an electrical fault occurs in upper mounting, the upper mounting circuit is isolated from the main vehicle circuit, and the running function of a vehicle is guaranteed not to be affected.
Drawings
Fig. 1 is a schematic diagram of a high-voltage electrical apparatus architecture of a high-voltage integrated controller according to the present invention;
fig. 2 is a schematic diagram of a position of a voltage detection module of a loading loop according to the present invention.
FIG. 3 is a schematic diagram of a top-loading secondary current-up process according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 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.
The technical scheme of the present invention will be explained in conjunction with specific embodiments.
Example 1
As shown in fig. 1-3, an electric vehicle high voltage controller capable of individually controlling power supply of an upper package, comprising: an insulation detector and an upper motor driving circuit;
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 mounting contactor is connected with the positive end of the power battery, the output end of the upper mounting contactor is connected with the positive end of the upper mounting interface, and the negative end of the upper mounting interface is connected with the negative end of the power battery;
when the insulation detector detects that the vehicle has more than three levels of insulation faults, the whole vehicle controller controls the whole vehicle to be electrified under high voltage, and controls the upper mounting contactor to be closed, so that the upper mounting motor driving circuit is closed, and insulation detection is performed again:
if the insulation detector detects an insulation fault, the whole vehicle controller controls the upper mounting contactor to be disconnected, so that the upper mounting motor driving circuit is disconnected;
if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper-mounted contactor to be opened, controls the BMS main contactor to be closed, and performs insulation detection again:
if the insulation fault is detected again by the insulation detector, the whole vehicle controller controls the upper mounting contactor to keep an off state, so that the upper mounting motor driving circuit is cut off;
and if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper part to independently supply power.
By designing the control circuit of the high-voltage controller, the independent power supply of the upper assembly part of the electric automobile can be realized, when an insulation fault occurs and the high-voltage power supply is cut off, the whole automobile controller firstly controls the upper assembly driving circuit to independently power up and perform insulation detection, if the insulation fault is detected again, the upper assembly driving circuit is indicated to have a fault, the upper assembly power supply cannot be operated at the moment, and if the insulation fault does not exist, the upper assembly driving circuit is indicated to be normal; then still need detect battery internal circuit, close BMS main contactor promptly, if battery internal circuit has the trouble, also can not make the power supply work of upper assembling this moment, if battery internal circuit does not have the trouble, then indicate that battery internal circuit and upper assembling motor drive circuit are all normal, alright for upper assembling independent power supply this moment, make the upper assembling interface independently power up, drive upper assembling electrical apparatus system work, avoid the long-time risk problem that stops working and cause of upper assembling.
In one 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 device driving circuit for independently supplying power to the auxiliary device; 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 integrated controller divides the whole power distribution circuit into three independent power supply circuits so as to realize independent power supply of the three circuits, wherein the main driving motor circuit and the auxiliary equipment driving circuit are consistent with the principle of a control circuit of the upper motor driving circuit; when the high-voltage power supply is cut off due to insulation faults, the whole vehicle controller can control the main driving motor circuit and the auxiliary equipment driving circuit to be electrified independently respectively and conduct insulation detection, for example, when the controller is used for a sanitation vehicle with electric drive uploading, a professional maintenance vehicle and other vehicle types, the uploading circuit is isolated from the main vehicle circuit when the electric faults occur in uploading, and the vehicle driving function is not affected.
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 with the positive end of the power battery, the output end of the main machine contactor is connected with the positive end of the driving motor interface, and the negative end of the driving motor interface is connected with the negative end of the power battery; the auxiliary equipment driving circuit comprises an auxiliary equipment contactor, an auxiliary equipment control module and auxiliary equipment interfaces, wherein the input end of the auxiliary equipment contactor is connected with the positive end of the power battery, the output end of the auxiliary equipment contactor is connected with the auxiliary equipment control module, the auxiliary equipment control module is connected with the negative end of the power battery, and each auxiliary equipment interface is connected with the auxiliary equipment control module.
In an implementation manner, the electric automobile high-voltage controller further comprises three groups of pre-charging circuits which are respectively connected with the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit, wherein the three groups of pre-charging circuits comprise pre-charging contactors and pre-charging resistors which are connected in series, the three groups of pre-charging contactors are connected with the positive end of the power battery, and the three groups of pre-charging resistors are respectively connected with the output end of the main machine contactor, the output end of the auxiliary machine contactor and the output end of the upper contactor; the design of the three groups of pre-charging circuits can ensure that the three circuits of the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit can realize respective pre-charging processes when the independent power supply works.
After the pre-charging circuit is matched, the whole vehicle controller controls the independent power supply for the upper garment, and the method specifically comprises the following steps:
and the whole vehicle controller controls the closing of the pre-charging contactor to perform pre-charging, and after the pre-charging is finished, the whole vehicle controller controls the opening of the pre-charging contactor and the closing of the upper charging contactor in the upper charging motor driving circuit, and the upper charging is electrified to work.
In addition, the upper motor driving circuit further comprises a voltage detection module, and the voltage detection module is connected in parallel between the anode and the cathode of the upper interface;
and the voltage detection module sends a detection signal to the whole vehicle controller, and when the whole vehicle controller receives that the voltage value fed back by the voltage detection module is more than or equal to 90% of the rated voltage of the power battery, the pre-charging is finished, and the whole vehicle controller controls the pre-charging contactor in the upper motor driving circuit to be opened and the upper contactor to be closed.
The voltage detection module is arranged, so that voltage monitoring on the precharge process can be realized, the upper-mounting contactor is closed after the precharge is smoothly completed, and power is supplied to the upper-mounting motor, so that the upper-mounting can work normally and safely after the precharge is finished.
Furthermore, in order to improve the safety of each part of the circuit, the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit are connected with fuses.
Furthermore, the two ends of the host contactor are connected in parallel to the adhesion detection module, 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 phenomenon that the equipment is damaged due to the fact that the power cannot be cut off or the circuit is directly connected without a pre-charging process 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 more than three levels of insulation faults, the whole vehicle controller controls the whole vehicle to be electrified under high voltage, and controls the upper mounting contactor to be closed, so that the upper mounting motor driving circuit is closed, and insulation detection is performed again:
if the insulation detector detects an insulation fault, the whole vehicle controller controls the upper mounting contactor to be disconnected, so that the upper mounting motor driving circuit is disconnected;
if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper-mounted contactor to be opened, controls the BMS main contactor to be closed, and performs insulation detection again:
if the insulation fault is detected again by the insulation detector, the whole vehicle controller controls the upper mounting contactor to keep an off state, so that the upper mounting motor driving circuit is cut off;
and if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper part to independently supply power.
The embodiments given above are preferred examples for realizing the present invention, and the present invention is not limited to the above-described embodiments. Any immaterial additions and substitutions made by those skilled in the art according to the technical features of the technical scheme of the invention are all within the protection scope of the invention.
Claims (2)
1. An electric automobile high voltage controller capable of independently controlling upper-part power supply, which is characterized by comprising: an insulation detector and an upper motor driving circuit;
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 mounting contactor is connected with the positive end of the power battery, the output end of the upper mounting contactor is connected with the positive end of the upper mounting interface, and the negative end of the upper mounting interface is connected with the negative end of the power battery;
when the insulation detector detects that the vehicle has more than three levels of insulation faults, the whole vehicle controller controls the whole vehicle to be electrified under high voltage, and controls the upper mounting contactor to be closed, so that the upper mounting motor driving circuit is closed, and insulation detection is performed again:
if the insulation detector detects an insulation fault, the whole vehicle controller controls the upper mounting contactor to be disconnected, so that the upper mounting motor driving circuit is disconnected;
if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper-mounted contactor to be opened, controls the BMS main contactor to be closed, and performs insulation detection again:
if the insulation fault is detected again by the insulation detector, the whole vehicle controller controls the upper mounting contactor to keep an off state, so that the upper mounting motor driving circuit is cut off;
if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper part to independently supply power;
the auxiliary equipment driving circuit is used for independently supplying power to the 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 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 with the positive end of the power battery, the output end of the main machine contactor is connected with the positive end of the driving motor interface, and the negative end of the driving motor interface is connected with the negative end of the power battery;
the auxiliary equipment driving circuit comprises an auxiliary equipment contactor, an auxiliary equipment control module and auxiliary equipment interfaces, wherein the input end of the auxiliary equipment contactor is connected with the positive end of the power battery, the output end of the auxiliary equipment contactor is connected with the auxiliary equipment control module, the auxiliary equipment control module is connected with the negative end of the power battery, and each auxiliary equipment interface is connected with the auxiliary equipment control module;
the power battery pre-charging device further comprises three groups of pre-charging circuits which are respectively connected into the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit, wherein the three groups of pre-charging circuits comprise pre-charging contactors and pre-charging resistors which are connected in series, the three groups of pre-charging contactors are connected into the positive end of the power battery, and the three groups of pre-charging resistors are respectively connected with the output end of the main machine contactor, the output end of the auxiliary machine contactor and the output end of the upper contactor;
the whole vehicle controller controls to supply power to the upper part independently, and the whole vehicle controller comprises:
the whole vehicle controller controls the closing of the pre-charging contactor to perform pre-charging, and after the pre-charging is finished, the whole vehicle controller controls the opening of the pre-charging contactor and the closing of the upper charging contactor in the upper charging motor driving circuit, and the upper charging is electrified to work;
the upper motor driving circuit further comprises a voltage detection module, and the voltage detection module is connected in parallel between the anode and the cathode of the upper interface;
the voltage detection module sends a detection signal to the whole vehicle controller, when the whole vehicle controller receives that the voltage value fed back by the voltage detection module is more than or equal to 90% of the rated voltage of the power battery, the pre-charging is finished, and the whole vehicle controller controls the pre-charging contactor in the upper motor driving circuit to be opened and the upper contactor to be closed;
the main driving motor circuit, the auxiliary equipment driving circuit and the upper motor driving circuit are connected with fuses;
and two ends of the host contactor are connected in parallel to the adhesion detection module.
2. A control method of the high voltage controller according to claim 1, comprising: when the insulation detector detects that the vehicle has more than three levels of insulation faults, the whole vehicle controller controls the whole vehicle to be electrified under high voltage, and controls the upper mounting contactor to be closed, so that the upper mounting motor driving circuit is closed, and insulation detection is performed again:
if the insulation detector detects an insulation fault, the whole vehicle controller controls the upper mounting contactor to be disconnected, so that the upper mounting motor driving circuit is disconnected;
if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper-mounted contactor to be opened, controls the BMS main contactor to be closed, and performs insulation detection again:
if the insulation fault is detected again by the insulation detector, the whole vehicle controller controls the upper mounting contactor to keep an off state, so that the upper mounting motor driving circuit is cut off;
and if the insulation detector detects no insulation fault, the whole vehicle controller controls the upper part to independently supply power.
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| 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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| CN114083986B true CN114083986B (en) | 2023-12-29 |
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| CN115214366A (en) * | 2022-06-29 | 2022-10-21 | 上海启源芯动力科技有限公司 | Method, system, equipment and storage medium for preventing tank building of mixer truck |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005295698A (en) * | 2004-03-31 | 2005-10-20 | Sanyo Electric Co Ltd | Power supply device for vehicle |
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| CN114083986A (en) | 2022-02-25 |
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