CN113415249A - Domain controller turn-off path circuit and vehicle - Google Patents
Domain controller turn-off path circuit and vehicle Download PDFInfo
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- CN113415249A CN113415249A CN202110860973.2A CN202110860973A CN113415249A CN 113415249 A CN113415249 A CN 113415249A CN 202110860973 A CN202110860973 A CN 202110860973A CN 113415249 A CN113415249 A CN 113415249A
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- circuit
- controller
- triode
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- single chip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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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
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
Abstract
The invention discloses a domain controller turn-off path circuit and a vehicle, which comprises a monitoring single chip microcomputer circuit, a main single chip microcomputer circuit, a driving circuit, a CAN circuit, a resistor R1 and a triode Q1, wherein the monitoring single chip microcomputer circuit, the main single chip microcomputer circuit, the driving circuit, the CAN circuit, the resistor R1 and the triode Q1 are integrated on a domain controller; the base electrode of the triode Q1 is connected with the monitoring singlechip circuit, the monitoring singlechip circuit is in SPI communication with the main singlechip circuit, and the main singlechip circuit is connected with the CAN circuit; the collector of the triode is connected with the main singlechip circuit through a resistor R1, and the collector of the triode Q1 is also connected with an EN pin of the driving circuit; the emitter of the triode Q1 is grounded; the main singlechip circuit is respectively connected with each external controller through a CAN circuit; the driving circuit is respectively connected with each external controller. When the main single chip circuit of the domain controller fails, the invention can close the wake-up signal of the domain controller to the external controller.
Description
Technical Field
The invention belongs to the technical field of automobile domain controllers, and particularly relates to a domain controller turn-off path circuit and a vehicle.
Background
The automobile power domain controller manages information collection and function calling of relevant controllers related to automobile power. When a power domain controller program fails to operate according to a normal requirement, an error instruction may be sent to power related controllers such as an EDS (motor controller), a DCDC (power supply controller), a BMS (battery management controller) and the like controlled by the power domain controller, and if the power related controllers execute the error instruction, the whole vehicle may be out of control, and personnel on the vehicle cannot normally control the whole vehicle, which is very dangerous.
Therefore, functional safety of the power domain controller must be a significant design consideration. The functional safety related requirements are that when the power domain controller program fails to operate according to normal requirements, a wake-up signal needs to be turned off to power related controllers such as an EDS (motor controller), a DCDC (power supply controller), a BMS (battery management controller) and the like controlled by the domain controller, so that the power related controllers know that the power domain controller is in an abnormal condition at present, and accordingly, related functional safety is implemented, and risks of vehicles and personnel on the vehicles are reduced.
Therefore, it is necessary to develop a domain controller off-path circuit and a vehicle.
Disclosure of Invention
The invention aims to provide a domain controller turn-off path circuit and a vehicle, which can turn off a wake-up signal of a domain controller to an external controller when a main singlechip circuit of the domain controller fails.
In a first aspect, the domain controller turn-off path circuit provided by the invention comprises a monitoring single chip circuit, a main single chip circuit, a driving circuit, a CAN circuit, a resistor R1 and a triode Q1, wherein the monitoring single chip circuit, the main single chip circuit, the driving circuit, the CAN circuit, the resistor R1 and the triode Q1 are integrated on a domain controller;
the base electrode of the triode Q1 is connected with the monitoring singlechip circuit, the monitoring singlechip circuit is in SPI communication with the main singlechip circuit, and the main singlechip circuit is connected with the CAN circuit; the collector of the triode is connected with the main singlechip circuit through a resistor R1, and the collector of the triode Q1 is also connected with an EN pin of the driving circuit; the emitter of the triode Q1 is grounded;
the main singlechip circuit is respectively connected with each external controller through a CAN circuit; the driving circuit is respectively connected with each external controller;
under the normal condition of the main singlechip circuit, when each external controller works normally, the wake-up signal output by the drive circuit is at a high level, after the main singlechip circuit performs power-off flow on each external controller through the CAN circuit, the main singlechip circuit controls the drive circuit to close the wake-up signal through a resistor R1, the wake-up signal is at a low level after closing, and each external controller is closed;
under the abnormal condition of main singlechip circuit, control singlechip circuit output high level and give triode Q1, triode Q1 switches on, draws drive circuit's EN foot to low level by force, makes drive circuit close, and the wakening up signal that drive circuit output is the low level this moment, and when each external control ware received the wakening up signal and is the low level, starts self function safety mode.
Optionally, the domain controller is a power domain controller.
Optionally, the external controller includes an EDS controller, a BMS controller, and a DCDC controller, the EDS controller, the BMS controller, and the DCDC controller are respectively connected with the output end of the driving circuit, and the EDS controller, the BMS controller, and the DCDC controller are further respectively connected with the CAN circuit.
In a second aspect, the invention provides a vehicle employing a domain controller shutdown path circuit according to the invention.
The invention has the following advantages: under the abnormal condition of the main single chip circuit of the domain controller, the monitoring single chip circuit outputs high level to the triode Q1, the triode Q1 is conducted, an EN pin of the driving circuit is forcibly pulled to be low level, the driving circuit is closed, the awakening signal output by the driving circuit is low level, when each external controller receives the awakening signal which is low level, the self function safety mode is started, and the safety of the vehicle is greatly improved.
Drawings
FIG. 1 is a circuit diagram of the present embodiment;
in the figure: 10. the controller comprises a domain controller 11, a monitoring singlechip circuit 12, a main singlechip circuit 13, a driving circuit 14, a CAN circuit 20, an EDS controller 30, a BMS controller 40 and a DCDC controller.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, in this embodiment, a domain controller turn-off path circuit includes a monitoring single chip microcomputer circuit 11, a main single chip microcomputer circuit 12, a driving circuit 13, a CAN circuit 14, a resistor R1, and a transistor Q1, which are integrated on a domain controller 10; the connection relationship is as follows:
the base of triode Q1 is connected with monitoring singlechip single circuit 11, and monitoring singlechip single circuit 11 carries out SPI communication with main singlechip circuit 12, and main singlechip circuit 12 is connected with CAN circuit 14. The collector of the triode is connected with the main singlechip circuit 12 through a resistor R1, and the collector of the triode Q1 is also connected with an EN pin of the driving circuit 13. The emitter of the transistor Q1 is grounded. In use, the main chip 12 is connected to the external controllers through the CAN circuits 14, and the drive circuits 13 are connected to the external controllers.
In this embodiment, the monitoring mcu 11 is configured to monitor whether the main mcu 12 is working normally and drive the transistor Q1 to switch. The main singlechip circuit 12 is used for sending the health state of the main singlechip circuit to the monitoring singlechip circuit 11. Resistor R1 is a current limiting resistor.
In this embodiment, the domain controller 10 is a power domain controller. The external controller includes an EDS controller 20, a BMS controller 30, and a DCDC controller 40, the EDS controller 20, the BMS controller 30, and the DCDC controller 40 are respectively connected with the output terminal of the driving circuit 13, and the EDS controller 20, the BMS controller 30, and the DCDC controller 40 are also respectively connected with the CAN circuit 14.
Hereinafter, the operation principle of the present embodiment will be described in detail by taking the domain controller 10 as a power domain controller and the external controllers as the EDS controller 20, the BMS controller 30, and the DCDC controller 40 as examples.
When the main chip circuit 12 of the domain controller 10 is normal, and when three external controllers, namely the EDS controller 20, the BMS controller 30, and the DCDC controller 40, are working normally, the wake-up signal output by the driving circuit 13 is at a high level; when the main monolithic computer circuit 12 performs a current-down interval on the EDS controller 20, the BMS controller 30, and the DCDC controller 40 through the CAN circuit 14, the main monolithic computer circuit 12 controls the driving circuit 13 through the resistor R1 to turn off the wake-up signal again, the wake-up signal is at a low level after the turn-off, and all three external controllers, namely the EDS controller 20, the BMS controller 30, and the DCDC controller 40, are turned off.
When the main singlechip circuit 12 of the domain controller 10 fails, the CAN circuit 14 cannot normally communicate with an external controller; the monitoring singlechip circuit 11 cannot normally communicate with the main singlechip circuit 12 through the SPI; at this time, the monitoring single chip circuit 11 outputs a high level to the transistor Q1, and at this time, the transistor Q1 is in a conducting state, and pulls the EN pin of the driving circuit 13 to a low level, so that the driving circuit 13 is turned off. After the driving circuit 13 is turned off, the wake-up signal output from the driving circuit 13 also becomes low. Due to the failure of the main singlechip circuit 12, the CAN circuit 14 cannot go down the power supply flow of the EDS controller 20, the BMS controller 30 and the DCDC controller 40; under the condition that the current path is not provided with the CAN, when the three external controllers receive the wake-up signal and change into a low level, the three external controllers judge that the domain controller 10 is abnormal in function, and therefore the self functional safety mode is started.
Claims (4)
1. A domain controller shutdown path circuit, comprising: the system comprises a monitoring single chip circuit (11), a main single chip circuit (12), a driving circuit (13), a CAN circuit (14), a resistor R1 and a triode Q1, which are integrated on a domain controller (10);
the base electrode of the triode Q1 is connected with the monitoring single chip microcomputer circuit (11), the monitoring single chip microcomputer circuit (11) is in SPI communication with the main single chip microcomputer circuit (12), and the main single chip microcomputer circuit (12) is connected with the CAN circuit (14); the collector of the triode is connected with the main singlechip circuit (12) through a resistor R1, and the collector of the triode Q1 is also connected with an EN pin of the drive circuit (13); the emitter of the triode Q1 is grounded;
the main single chip microcomputer circuit (12) is respectively connected with each external controller through a CAN circuit (14);
the driving circuit (13) is respectively connected with each external controller;
under the normal condition of a main singlechip circuit (12), when each external controller works normally, a wake-up signal output by a drive circuit (13) is at a high level, after the main singlechip circuit (12) performs a power-down process on each external controller through a CAN (controller area network) circuit (14), the main singlechip circuit (12) controls the drive circuit (13) to close the wake-up signal through a resistor R1, the wake-up signal is at a low level after the wake-up signal is closed, and each external controller is closed;
under the abnormal condition of the main singlechip circuit (12), the monitoring singlechip circuit (11) outputs high level to the triode Q1, the triode Q1 is conducted, an EN pin of the driving circuit (13) is forcibly pulled to be low level, the driving circuit (13) is closed, the wake-up signal output by the driving circuit (13) is at low level, and when each external controller receives the wake-up signal which is at low level, the self function safety mode is started.
2. The domain controller off path circuit of claim 1, wherein: the domain controller (10) is a power domain controller.
3. The domain controller off path circuit of claim 1 or 2, wherein: the external controller comprises an EDS controller (20), a BMS controller (30) and a DCDC controller (40), wherein the EDS controller (20), the BMS controller (30) and the DCDC controller (40) are respectively connected with the output end of the driving circuit (13), and the EDS controller (20), the BMS controller (30) and the DCDC controller (40) are also respectively connected with the CAN circuit (14).
4. A vehicle, characterized in that: use of a domain controller as claimed in any one of claims 1 to 3 to shut down the path circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860973.2A CN113415249B (en) | 2021-07-29 | 2021-07-29 | Domain controller turn-off path circuit and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860973.2A CN113415249B (en) | 2021-07-29 | 2021-07-29 | Domain controller turn-off path circuit and vehicle |
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| Publication Number | Publication Date |
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| CN113415249A true CN113415249A (en) | 2021-09-21 |
| CN113415249B CN113415249B (en) | 2022-05-03 |
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| CN202110860973.2A Active CN113415249B (en) | 2021-07-29 | 2021-07-29 | Domain controller turn-off path circuit and vehicle |
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Citations (7)
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| US20160207485A1 (en) * | 2013-08-19 | 2016-07-21 | Bayerische Motoren Werke Aktiengesellschaft | A safety-relevant system in a vehicle |
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| JP2016190505A (en) * | 2015-03-30 | 2016-11-10 | 株式会社デンソー | Control system |
| JP2017171157A (en) * | 2016-03-24 | 2017-09-28 | 株式会社デンソー | Control system for vehicle |
| CN110525232A (en) * | 2019-09-04 | 2019-12-03 | 天津易鼎丰动力科技有限公司 | A kind of dynamical system domain controller for electric vehicle and its control method |
| CN112440904A (en) * | 2019-08-31 | 2021-03-05 | 比亚迪股份有限公司 | Domain controller, system and vehicle |
| CN112698981A (en) * | 2021-01-08 | 2021-04-23 | 重庆长安新能源汽车科技有限公司 | Protection circuit and method for preventing single chip microcomputer reset signal from failing |
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2021
- 2021-07-29 CN CN202110860973.2A patent/CN113415249B/en active Active
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| US20160207485A1 (en) * | 2013-08-19 | 2016-07-21 | Bayerische Motoren Werke Aktiengesellschaft | A safety-relevant system in a vehicle |
| JP2016190505A (en) * | 2015-03-30 | 2016-11-10 | 株式会社デンソー | Control system |
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| JP2017171157A (en) * | 2016-03-24 | 2017-09-28 | 株式会社デンソー | Control system for vehicle |
| CN112440904A (en) * | 2019-08-31 | 2021-03-05 | 比亚迪股份有限公司 | Domain controller, system and vehicle |
| CN110525232A (en) * | 2019-09-04 | 2019-12-03 | 天津易鼎丰动力科技有限公司 | A kind of dynamical system domain controller for electric vehicle and its control method |
| CN112698981A (en) * | 2021-01-08 | 2021-04-23 | 重庆长安新能源汽车科技有限公司 | Protection circuit and method for preventing single chip microcomputer reset signal from failing |
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| CN113415249B (en) | 2022-05-03 |
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Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |
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