CN117002259A - External discharge control system, method and vehicle - Google Patents
External discharge control system, method and vehicle Download PDFInfo
- Publication number
- CN117002259A CN117002259A CN202311201483.7A CN202311201483A CN117002259A CN 117002259 A CN117002259 A CN 117002259A CN 202311201483 A CN202311201483 A CN 202311201483A CN 117002259 A CN117002259 A CN 117002259A
- Authority
- CN
- China
- Prior art keywords
- vehicle
- external discharge
- external
- controller
- discharging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000007599 discharging Methods 0.000 claims abstract description 59
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 50
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 34
- 230000003993 interaction Effects 0.000 claims description 22
- 238000012795 verification Methods 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application discloses an external discharge control system, an external discharge control method and a vehicle, and relates to the technical field of new energy vehicles. The pair of external discharge control systems includes: the vehicle controller and the vehicle-mounted bidirectional charger; the whole vehicle controller is used for responding to the obtained external discharging instruction and judging whether the vehicle meets the external discharging condition, wherein the external discharging condition is that the current electric quantity of the high-voltage battery is larger than or equal to a high-voltage battery discharging threshold value, the connection state of the discharging gun is connected, and the speed of the whole vehicle is smaller than or equal to a vehicle static threshold value; if yes, after the high voltage on the whole vehicle is controlled, sending an external discharge enabling instruction to the vehicle-mounted bidirectional charger; and the vehicle-mounted bidirectional charger is used for responding to the external discharge enabling instruction and executing external discharge. Therefore, the problem that the alternating-current charging port generates high voltage due to the fact that the whole vehicle controller unexpectedly sends an external discharging request can be avoided, and accordingly reliability and safety of discharging are improved.
Description
Technical Field
The application relates to the technical field of new energy vehicles, in particular to an external discharge control system and method and a vehicle.
Background
In recent years, with the continuous upgrade of new energy automobiles, electric automobile technology has been actively developed, and V2L technology (Vehicle to Load) for supplying power to other external loads by using a high-voltage battery of the whole automobile has also been developed.
In the related art, an automobile can respond to a request of a member in the automobile, and the automobile controller (Vehicle Control Unit, VCU) requests an On-Board bidirectional Charger (OBC) to execute external discharge On the basis of ensuring that the electric quantity of a high-voltage battery and other related parameters meet requirements, wherein the voltage of the On-Board bidirectional Charger can reach 220V.
However, if the automobile fails systematically or in random hardware, the vehicle controller may send an external discharge request unexpectedly, resulting in high voltage power generated at the ac charging port, so that the reliability and safety of the external discharge are low.
Disclosure of Invention
The application provides an outward discharge control system, an outward discharge control method and a vehicle, which can improve the reliability and safety of outward discharge.
The application discloses the following technical scheme:
in a first aspect, the present application provides an external discharge control system, comprising: the vehicle controller and the vehicle-mounted bidirectional charger;
the vehicle controller is used for responding to the obtained external discharging instruction and judging whether the vehicle meets the external discharging condition, wherein the external discharging condition is that the current electric quantity of the high-voltage battery is larger than or equal to a high-voltage battery discharging threshold value, the connection state of the discharging gun is connected, and the vehicle speed of the vehicle is smaller than or equal to a vehicle static threshold value; if yes, after the high voltage on the whole vehicle is controlled, sending an external discharge enabling instruction to the vehicle-mounted bidirectional charger;
the vehicle-mounted bidirectional charger is used for responding to the external discharge enabling instruction and executing external discharge.
Optionally, the vehicle-mounted bidirectional charger is specifically configured to:
judging whether the vehicle meets the external discharge condition or not in response to the external discharge enabling instruction; if yes, the external discharge is executed.
Optionally, the vehicle-mounted bidirectional charger is specifically configured to:
converting alternating current of a high-voltage battery of the vehicle into 220-volt alternating current in response to the external discharge enabling instruction;
releasing the 220 volt alternating current.
Optionally, the system further comprises: a high voltage battery controller;
the vehicle controller is specifically configured to send a closing instruction to the high-voltage battery controller if the vehicle controller is on, where the closing instruction characterizes a main relay for requesting to close a high-voltage battery of the vehicle;
the high-voltage battery controller is used for sending a closing success instruction to the whole vehicle controller after executing the main relay for closing the high-voltage battery of the vehicle;
the whole vehicle controller is specifically used for controlling high-voltage power on the whole vehicle according to the closing success instruction; and after the high-voltage electricity on the whole vehicle is controlled, sending an external discharge enabling instruction to the vehicle-mounted bidirectional charger.
Optionally, the system further comprises: a human-computer interaction interface;
the man-machine interaction interface is used for acquiring a discharge threshold value of the high-voltage battery; and sending an external discharging instruction to the whole vehicle controller, wherein the external discharging instruction comprises the high-voltage power Chi Fangdian threshold.
Optionally, the whole vehicle controller is specifically configured to:
judging whether a communication interface of the whole vehicle controller meets a signal verification requirement or not, wherein the signal verification requirement is that communication among the man-machine interaction interface, the high-voltage battery controller, the vehicle-mounted bidirectional charger and the whole vehicle controller can be normally transmitted;
if so, judging whether the vehicle meets the external discharge condition or not in response to the obtained external discharge instruction.
Optionally, the vehicle-mounted bidirectional charger is specifically configured to:
judging whether the communication interface of the vehicle-mounted bidirectional charging meets a second signal checking requirement, wherein the second signal checking requirement is that communication among the man-machine interaction interface, the high-voltage battery controller, the whole vehicle controller and the vehicle-mounted bidirectional charging machine can be normally transmitted;
if yes, external discharge is executed in response to the external discharge enabling instruction.
Optionally, the whole vehicle controller is specifically configured to:
based on a CRC8 checking algorithm, whether the communication interface of the whole vehicle controller meets the first signal checking requirement is judged.
In a second aspect, the present application provides an external discharge control method, applied to a vehicle controller, where the method includes:
responding to the obtained external discharging instruction, judging whether the vehicle meets an external discharging condition, wherein the external discharging condition is that the current electric quantity of the high-voltage battery is larger than or equal to a high-voltage battery discharging threshold, the connection state of the discharging gun is connected, and the vehicle speed of the whole vehicle is smaller than or equal to a vehicle static threshold;
if so, after the high voltage on the whole vehicle is controlled, an external discharge enabling instruction is sent to the vehicle-mounted bidirectional charger, so that the vehicle-mounted bidirectional charger responds to the external discharge enabling instruction to execute external discharge.
Optionally, the determining whether the vehicle meets the external discharge condition in response to the obtained external discharge instruction includes:
judging whether a communication interface of the whole vehicle controller meets a first signal verification requirement or not, wherein the first signal verification requirement is that communication among a human-computer interaction interface of the vehicle, a high-voltage battery controller, a vehicle-mounted bidirectional charger and the whole vehicle controller can be normally transmitted;
if so, judging whether the vehicle meets the external discharge condition or not in response to the obtained external discharge instruction.
Optionally, the determining whether the communication interface of the whole vehicle controller meets the first signal verification requirement includes:
based on a CRC8 checking algorithm, whether the communication interface of the whole vehicle controller meets the first signal checking requirement is judged.
In a third aspect, the present application provides a vehicle comprising an external discharge control system as described in the first aspect above.
Compared with the prior art, the application has the following beneficial effects:
the application provides an outward discharge control system, an outward discharge control method and a vehicle, wherein the outward discharge control system comprises: the vehicle controller and the vehicle-mounted bidirectional charger; the whole vehicle controller is used for responding to the obtained external discharging instruction and judging whether the vehicle meets the external discharging condition, wherein the external discharging condition is that the current electric quantity of the high-voltage battery is larger than or equal to a high-voltage battery discharging threshold value, the connection state of the discharging gun is connected, and the speed of the whole vehicle is smaller than or equal to a vehicle static threshold value; if yes, after the high voltage on the whole vehicle is controlled, sending an external discharge enabling instruction to the vehicle-mounted bidirectional charger; and the vehicle-mounted bidirectional charger is used for responding to the external discharge enabling instruction and executing external discharge. Therefore, the problem that the alternating-current charging port generates high voltage due to the fact that the whole vehicle controller unexpectedly sends an external discharging request can be avoided, and accordingly reliability and safety of discharging are improved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic diagram of an external discharge control system according to an embodiment of the present application;
fig. 2 is a signaling diagram of an external discharge control system according to an embodiment of the present application;
fig. 3 is a flowchart of an external discharge control method according to an embodiment of the present application.
Detailed Description
As described above, in the related art, the vehicle may respond to the request of the member in the vehicle, and through the vehicle controller (Vehicle Control Unit, VCU), on the basis of ensuring that the electric quantity of the high-voltage battery and other related parameters meet the requirements, request the On-Board Charger (OBC) to perform the external discharge, and the voltage thereof may reach 220 v.
However, if the automobile fails systematically or in random hardware, the vehicle controller may send an external discharge request unexpectedly, resulting in high voltage power generated at the ac charging port, so that the reliability and safety of the external discharge are low.
In view of this, the application discloses an external discharge control system, method and vehicle, the external discharge control system includes: the vehicle controller and the vehicle-mounted bidirectional charger; the whole vehicle controller is used for responding to the obtained external discharging instruction and judging whether the vehicle meets the external discharging condition, wherein the external discharging condition is that the current electric quantity of the high-voltage battery is larger than or equal to a high-voltage battery discharging threshold value, the connection state of the discharging gun is connected, and the speed of the whole vehicle is smaller than or equal to a vehicle static threshold value; if yes, after the high voltage on the whole vehicle is controlled, sending an external discharge enabling instruction to the vehicle-mounted bidirectional charger; and the vehicle-mounted bidirectional charger is used for responding to the external discharge enabling instruction and executing external discharge. Therefore, the problem that the alternating-current charging port generates high voltage due to the fact that the whole vehicle controller unexpectedly sends an external discharging request can be avoided, and accordingly reliability and safety of discharging are improved.
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, the schematic diagram of an external discharge control system according to an embodiment of the present application is shown. The pair of external discharge control systems 100 includes: the vehicle-mounted bidirectional charger comprises a vehicle controller 101, a vehicle-mounted bidirectional charger 102, a high-voltage battery controller 103 and a human-computer interaction interface 104.
Specifically, the whole vehicle controller 101 is a controller used in a pure electric vehicle and can be used for executing form control, accessory management, energy management, fault processing and information interaction, so that the whole vehicle can normally and stably work under the conditions of better dynamic property, higher economy and reliability.
The vehicle-mounted bidirectional charger 102 is a bidirectional charger fixedly mounted on an electric automobile, has the capability of safely and automatically fully charging a power battery of the electric automobile, can dynamically adjust charging current or voltage parameters according to data provided by a battery management system, executes corresponding actions and completes a bidirectional charging process.
The high-voltage battery controller 103 is used for ensuring the safe and reliable use of the battery, controlling the charge and discharge of the battery pack, reporting the basic parameters and fault information of the battery system, and is a core component for battery protection and management.
In some specific implementations, the man-machine interaction interface 104 may refer to an interface that can perform man-machine interaction on a vehicle, such as an instrument display of the vehicle, or may refer to an interface that can perform man-machine interaction on an application on an electronic device of a user, such as the like. The present application is not limited to a specific hardware position relationship between the human-computer interaction interface 104 and the vehicle.
Referring to fig. 2, the signaling diagram of an external discharge control system according to an embodiment of the present application is shown.
S201: the human-computer interaction interface obtains a high-voltage electric Chi Fangdian threshold.
The man-machine interaction interface 104 may obtain the high-voltage battery discharge threshold input by the user, and trigger an external discharge instruction to the vehicle controller 101, where the external discharge instruction includes the high-voltage battery Chi Fangdian threshold.
For example, the high-voltage battery discharge threshold of the vehicle may be 20%, i.e., the vehicle controller 101 controls the vehicle to discharge at most 20% of the electric power of the high-voltage battery. It should be noted that, the present application is not limited to a specific high-voltage battery discharge threshold.
S202: the man-machine interaction interface sends an external discharge instruction to the whole vehicle controller.
S203: the vehicle controller judges whether the vehicle meets the external discharge condition. If yes, step S204 is performed.
When the vehicle controller 101 acquires the external discharge command, it is necessary to determine whether the vehicle satisfies the external discharge condition. Specifically, the external discharging condition is that the current electric quantity of the high-voltage battery is greater than or equal to a discharging threshold value of the high-voltage battery, the connection state of the discharging gun is connected, and the speed of the whole vehicle is less than or equal to a vehicle static threshold value. That is, the external discharge condition is satisfied only when the current high-voltage battery power is greater than or equal to the high-voltage battery discharge threshold, the discharge gun connection state is connected, and the vehicle speed of the whole vehicle is less than or equal to the vehicle rest threshold.
For example, the vehicle stationary threshold may be 2km/h (kilometers per hour). When the whole vehicle speed of the vehicle is less than or equal to 2km/h, judging that the vehicle is stationary; and when the whole vehicle speed of the vehicle is greater than 2km/h, judging that the vehicle is not stationary. The present application is not limited to a specific vehicle stationary threshold value.
Specifically, the connection state of the discharge gun is divided into the following types: connected, semi-connected, unconnected. It can be understood that if the vehicle does not meet the external discharge condition, that is, the current electric quantity of the high-voltage battery is less than the discharge threshold of the high-voltage battery, or the connection state of the discharge gun is semi-connected or unconnected, or the vehicle speed of the whole vehicle is greater than the vehicle rest threshold, the step S204 and the subsequent operations cannot be continuously executed.
In some specific implementations, before the vehicle controller 101 determines whether the vehicle meets the external discharge condition, it may also determine whether the communication interface of the vehicle controller 101 meets the first signal verification requirement. Specifically, the first signal verification requirement is whether the communication among the man-machine interaction interface 104, the high-voltage battery controller 103, the vehicle-mounted bidirectional charger 102 and the whole vehicle controller 101 of the vehicle can be normally transmitted. And after judging that the communication can be normally transmitted, executing the step of judging whether the vehicle meets the external discharge condition.
The communication interface of the vehicle Controller 101 may be a Controller area network (Controller AreaNetwork, CAN) interface, for example. Then, based on the CRC8 checking algorithm, the check sum signal check bit, the rolling counter signal check bit, and the Timeout signal check bit in the packet corresponding to the CAN interface may be checked, so as to determine whether the CAN interface of the whole vehicle controller 101 meets the first signal checking requirement. If the value of the Checksum in the Checksum signal check bit is incorrect, or if the rolling counter is stuck or the signal times out, it is determined that the CAN interface of the whole vehicle controller 101 does not meet the first signal check requirement. Otherwise, the CAN interface of the whole vehicle controller 101 is judged to meet the first signal verification requirement.
It should be noted that, the communication interface of the vehicle controller 101 may be a Local network bus (Local InterconnectNetwork, LIN) or may communicate through a wireless transmission mode such as 3G/4G/5G/WIFI, in addition to the CAN interface. The application is not limited to a specific communication method.
It can be understood that if the vehicle controller 101 detects that the communication between the human-computer interaction interface 104, the high-voltage battery controller 103, the vehicle-mounted bidirectional charger 102 or the vehicle controller 101 is abnormal and does not meet the first signal verification requirement, the subsequent operation cannot be continuously performed, and the step of determining whether the vehicle meets the external discharge condition is not performed.
S204: and the whole vehicle controller sends a closing instruction to the high-voltage battery controller.
When the vehicle controller 101 determines that the vehicle meets the external discharge condition, a closing instruction is sent to the high-voltage battery controller 103. The close command characterizes a main relay requesting to close a high voltage battery of the vehicle.
It can be understood that the relay is closed before charging and discharging in order to avoid load closing, so that the high-voltage process on the whole vehicle in the discharging process can be safely completed. The relay action sequence of the process is consistent with that of the high-voltage process on the normal vehicle triggered by non-discharge, and the description is omitted here.
S205: the high-voltage battery controller performs a main relay operation of closing a high-voltage battery of the vehicle.
S206: and the high-voltage battery controller sends a closing success instruction to the whole vehicle controller.
After the high-voltage battery controller 103 performs the main relay operation for closing the high-voltage battery of the vehicle, a closing success command is sent to the whole vehicle controller 101, so that the whole vehicle controller 101 can control the high voltage on the whole vehicle in response to the closing success command.
S207: and the whole vehicle controller responds to the closing success instruction and controls high pressure on the whole vehicle.
In some specific implementations, after receiving the closing success command, the vehicle controller 101 may further perform high-voltage self-test, and if the high-voltage self-test passes, control the high voltage on the vehicle.
For example, the high-voltage self-checking content may include whether the direct current conversion device of the whole vehicle is faulty or not and whether the high-voltage relay of the whole vehicle is stuck to the fault or not. If the direct current-direct current conversion device of the whole vehicle has no fault and the high-voltage relay of the whole vehicle has no adhesion fault, the step of controlling the high voltage on the whole vehicle can be executed.
S208: the whole vehicle controller sends an external discharge enabling instruction to the vehicle-mounted bidirectional charger.
After the vehicle controller 101 controls the high voltage on the vehicle, an external discharge enabling instruction can be sent to the vehicle-mounted bidirectional charger 102.
S209: the vehicle-mounted bidirectional charger responds to the external discharge enabling instruction to execute external discharge.
In some specific implementations, before receiving the external discharging enabling instruction, the vehicle-mounted bidirectional charger 102 may first determine whether the communication interface of the vehicle-mounted bidirectional charger meets a second signal checking requirement, where the second signal checking requirement is specifically that communication among the human-machine interaction interface 104, the high-voltage battery controller 103, the vehicle controller 101 and the vehicle-mounted bidirectional charger 102 may be normally transmitted. And after judging that the communication can be normally transmitted, executing the step of executing the external discharge. The specific verification method is similar to the verification method in step S203, and will not be described here again.
Since the problem that the vehicle-mounted bidirectional charger 102 unexpectedly performs the external discharge operation and causes the ac charging port to generate high voltage electricity may occur, it is also possible to determine whether the vehicle satisfies the external discharge condition again after receiving the external discharge enabling instruction.
In some specific implementation manners, the external discharge condition same as the external discharge condition in S203 may be set, that is, the current high-voltage battery power is greater than or equal to the high-voltage battery discharge threshold, the connection state of the discharge gun is connected, and the vehicle speed of the whole vehicle is less than or equal to the vehicle rest threshold. If the external discharge condition is satisfied, external discharge may be performed.
In other specific implementations, the external discharge condition may also be set to: the current high-voltage battery electric quantity is greater than or equal to a high-voltage battery discharge threshold, the connection state of the discharge gun is connected, the speed of the whole vehicle is less than or equal to a vehicle static threshold, and the electronic lock state of the discharge gun is in an effective state or a locking state. If the external discharge condition is satisfied, external discharge may be performed. The present application is not limited to specific external discharge conditions.
In some specific implementations, in order to improve reliability and safety of discharge, the 220 v ac power may be released after the ac power of the high-voltage battery of the vehicle is converted into the 220 v ac power in response to an external discharge enabling command.
In some specific implementation manners, a monitoring module can be further arranged in the external discharge system to monitor the external discharge process of the vehicle. Firstly, if the external discharging system is not expected to be started, or an abnormality occurs in the allowing process of the external discharging system, the external discharging can be immediately closed, so that the safety of personnel in and out of the vehicle is ensured. Secondly, the monitoring module can realize that a driver observes the discharge state in real time, and the driver can pause or close the vehicle to discharge outwards at any time through the monitoring module.
In summary, the application discloses an external discharge control system, which increases dangerous condition identification, can avoid the problem that an external discharge request is not expected to be sent by a whole vehicle controller, and high voltage is generated at an alternating current charging port, so that the reliability and safety of discharge are improved. In addition, the communication verification problem is also involved in the external discharge control system, when the safety key signal communication verification is abnormal, an external discharge enabling instruction is not sent or discharge operation is not executed, state jump related to the termination of discharge in the range of a functional link is ensured, the safe termination of the high-voltage discharge of the whole vehicle is ensured, and the reliability and the safety of the discharge are also improved.
Referring to fig. 3, the flowchart of an external discharge control method according to an embodiment of the present application is shown. The method is applied to the whole vehicle controller 101, and comprises the following steps:
s301: and responding to the obtained external discharge instruction, and judging whether the vehicle meets the external discharge condition. If yes, step S302 is performed.
Specifically, the external discharging condition is that the current electric quantity of the high-voltage battery is greater than or equal to a discharging threshold value of the high-voltage battery, the connection state of the discharging gun is connected, and the speed of the whole vehicle is less than or equal to a vehicle static threshold value.
In some specific implementations, in response to the obtained external discharge instruction, determining whether the vehicle satisfies the external discharge condition includes:
judging whether a communication interface of the whole vehicle controller meets a first signal checking requirement, wherein the first signal checking requirement is that communication among a human-computer interaction interface of a vehicle, a high-voltage battery controller, a vehicle-mounted bidirectional charger and the whole vehicle controller can be normally transmitted; if so, judging whether the vehicle meets the external discharge condition or not in response to the obtained external discharge instruction.
In some specific implementations, determining whether the communication interface of the vehicle controller meets a first signal verification requirement includes:
based on a CRC8 checking algorithm, whether the communication interface of the whole vehicle controller meets the first signal checking requirement is judged.
S302: after the high voltage on the whole vehicle is controlled, an external discharge enabling instruction is sent to the vehicle-mounted bidirectional charger, so that the vehicle-mounted bidirectional charger responds to the external discharge enabling instruction to execute external discharge.
In summary, the application discloses an external discharge control method applied to a vehicle controller. The problem that the alternating-current charging port generates high voltage due to the fact that the whole vehicle controller unexpectedly sends an external discharging request can be avoided, and accordingly reliability and safety of discharging are improved. In addition, the communication verification problem is also involved in the external discharge control system, when the safety key signal communication verification is abnormal, an external discharge enabling instruction is not sent, the state jump related to the discharge is stopped within the range of a functional link, the safe termination of the high-voltage discharge of the whole vehicle is ensured, and the reliability and the safety of the discharge are also improved.
Correspondingly, the application also discloses a vehicle which comprises the external discharge control system as introduced in the embodiment.
The vehicle provided by the embodiment of the application has the beneficial effects of the external discharge control system introduced above, increases dangerous condition identification, can avoid the problem that the whole vehicle controller does not send an external discharge request to cause high voltage electricity to an alternating current charging port, and further improves the reliability and safety of discharge. In addition, the communication verification problem is also involved in the external discharge control system, when the safety key signal communication verification is abnormal, an external discharge enabling instruction is not sent or discharge operation is not executed, state jump related to the termination of discharge in the range of a functional link is ensured, the safe termination of the high-voltage discharge of the whole vehicle is ensured, and the reliability and the safety of the discharge are also improved.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. In particular, for the device and vehicle embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, with reference to the description of the method embodiments in part. The apparatus and vehicle described above are merely illustrative, wherein elements illustrated as separate elements may or may not be physically separate, and elements illustrated as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present application without undue burden.
The foregoing is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (10)
1. An external discharge control system, the system comprising: the vehicle controller and the vehicle-mounted bidirectional charger;
the vehicle controller is used for responding to the obtained external discharging instruction and judging whether the vehicle meets the external discharging condition, wherein the external discharging condition is that the current electric quantity of the high-voltage battery is larger than or equal to a high-voltage battery discharging threshold value, the connection state of the discharging gun is connected, and the vehicle speed of the vehicle is smaller than or equal to a vehicle static threshold value; if yes, after the high voltage on the whole vehicle is controlled, sending an external discharge enabling instruction to the vehicle-mounted bidirectional charger;
the vehicle-mounted bidirectional charger is used for responding to the external discharge enabling instruction and executing external discharge.
2. The system of claim 1, wherein the vehicle-mounted bi-directional charger is specifically configured to:
judging whether the vehicle meets the external discharge condition or not in response to the external discharge enabling instruction; if yes, the external discharge is executed.
3. The system of claim 1, wherein the vehicle-mounted bi-directional charger is specifically configured to:
converting alternating current of a high-voltage battery of the vehicle into 220-volt alternating current in response to the external discharge enabling instruction;
releasing the 220 volt alternating current.
4. The system of claim 1, wherein the system further comprises: a high voltage battery controller;
the vehicle controller is specifically configured to send a closing instruction to the high-voltage battery controller if the vehicle controller is on, where the closing instruction characterizes a main relay for requesting to close a high-voltage battery of the vehicle;
the high-voltage battery controller is used for sending a closing success instruction to the whole vehicle controller after executing the main relay for closing the high-voltage battery of the vehicle;
the whole vehicle controller is specifically used for controlling high-voltage power on the whole vehicle according to the closing success instruction; and after the high-voltage electricity on the whole vehicle is controlled, sending an external discharge enabling instruction to the vehicle-mounted bidirectional charger.
5. The system of claim 4, wherein the system further comprises: a human-computer interaction interface;
the man-machine interaction interface is used for acquiring a discharge threshold value of the high-voltage battery; and sending an external discharging instruction to the whole vehicle controller, wherein the external discharging instruction comprises the high-voltage power Chi Fangdian threshold.
6. The system of claim 5, wherein the vehicle controller is configured specifically to:
judging whether a communication interface of the whole vehicle controller meets a first signal verification requirement or not, wherein the first signal verification requirement is that communication among the man-machine interaction interface, the high-voltage battery controller, the vehicle-mounted bidirectional charger and the whole vehicle controller can be normally transmitted;
if so, judging whether the vehicle meets the external discharge condition or not in response to the obtained external discharge instruction.
7. The system of claim 5, wherein the vehicle-mounted bi-directional charger is specifically configured to:
judging whether the communication interface of the vehicle-mounted bidirectional charging meets a second signal checking requirement, wherein the second signal checking requirement is that communication among the man-machine interaction interface, the high-voltage battery controller, the whole vehicle controller and the vehicle-mounted bidirectional charging machine can be normally transmitted;
if yes, external discharge is executed in response to the external discharge enabling instruction.
8. The system of claim 6, wherein the vehicle controller is configured to:
based on a CRC8 checking algorithm, whether the communication interface of the whole vehicle controller meets the first signal checking requirement is judged.
9. The external discharge control method is characterized by being applied to a whole vehicle controller, and comprises the following steps:
responding to the obtained external discharging instruction, judging whether the vehicle meets an external discharging condition, wherein the external discharging condition is that the current electric quantity of the high-voltage battery is larger than or equal to a high-voltage battery discharging threshold, the connection state of the discharging gun is connected, and the vehicle speed of the whole vehicle is smaller than or equal to a vehicle static threshold;
if so, after the high voltage on the whole vehicle is controlled, an external discharge enabling instruction is sent to the vehicle-mounted bidirectional charger, so that the vehicle-mounted bidirectional charger responds to the external discharge enabling instruction to execute external discharge.
10. A vehicle characterized in that it comprises the external discharge control system according to claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311201483.7A CN117002259A (en) | 2023-09-18 | 2023-09-18 | External discharge control system, method and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311201483.7A CN117002259A (en) | 2023-09-18 | 2023-09-18 | External discharge control system, method and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117002259A true CN117002259A (en) | 2023-11-07 |
Family
ID=88563941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311201483.7A Pending CN117002259A (en) | 2023-09-18 | 2023-09-18 | External discharge control system, method and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117002259A (en) |
-
2023
- 2023-09-18 CN CN202311201483.7A patent/CN117002259A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105391103B (en) | Off-board charger for high voltage battery charging | |
| EP2802891B1 (en) | System and method for high voltage cable detection in hybrid vehicles | |
| CN111038288B (en) | Control system and method for vehicle hydrogen charging | |
| CN108206570B (en) | Direct-current power transmission system between electric vehicles and control method | |
| JP5849208B2 (en) | In-vehicle charger | |
| KR20170059844A (en) | Apparatus for preventing over discharge of vehicle battery and method thereof | |
| US20170279288A1 (en) | Power-supply apparatus | |
| CN105158614B (en) | High-voltage safety monitoring method and high-voltage safety monitor system | |
| CN105291875A (en) | Electromobile quick charge method | |
| CN114771326B (en) | AC/DC compatible charging control method, device, vehicle-mounted terminal and system | |
| JP2013090496A (en) | Charger for electric car | |
| CN101281230A (en) | Insulation fault monitoring device and method for hybrid power vehicle high voltage system | |
| CN109484186A (en) | Electric car active charging method and device | |
| KR101091145B1 (en) | Portable charge control device and processing method thereof | |
| CN205292509U (en) | Voltage cutting device of car | |
| CN112277730A (en) | Charging protection method and device for electric automobile, electric automobile and storage medium | |
| CN117002259A (en) | External discharge control system, method and vehicle | |
| CN114379370B (en) | Control method and device for vehicle limp mode, vehicle and storage medium | |
| CN114801749A (en) | Intelligent control system for vehicle power battery | |
| CN107719127A (en) | Electric automobile and battery management system | |
| KR20230080893A (en) | The method of controlling active insulation resistance of within dc fast charger for electric vehicle | |
| KR20180023327A (en) | Power supply apparatus for electric field load in eco-vehicle | |
| CN113799611A (en) | Electric vehicle battery diagnosis and control method, vehicle-mounted terminal and readable storage medium | |
| CN107230809B (en) | Battery pack charging protection method, corresponding battery pack and battery pack charging equipment | |
| CN102189995B (en) | For making method out of service by the functional unit of controller controlling run in the car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |