CN112046421B

CN112046421B - Power-on control device and method of all-in-one controller and automobile

Info

Publication number: CN112046421B
Application number: CN202010811905.2A
Authority: CN
Inventors: 陈建清; 牛高产; 徐研科
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2022-05-17
Anticipated expiration: 2040-08-13
Also published as: CN112046421A

Abstract

The invention discloses a power-on control device and method of an all-in-one controller and an automobile, wherein the device comprises the following components: the control unit is used for controlling the power-on of the all-in-one controller of the automobile; the control unit is also used for enabling the PDU to control the auxiliary driving module of the automobile to be electrified after the power-on self-test of the all-in-one controller of the automobile and judging whether the auxiliary driving module is electrified successfully under the control of the PDU; the control unit is also used for enabling the PDU to control the main driving module of the automobile to be electrified if the auxiliary driving module is successfully electrified under the control of the PDU; and the control unit is also used for controlling the auxiliary drive module to be electrified again by the MCU, the VCU and/or the ACU if the auxiliary drive module is failed to be electrified under the control of the PDU. According to the scheme, the problem that the power-on reliability is poor due to the fact that the internal structure of the all-in-one controller of the new energy automobile is complex can be solved, and the effect of improving the power-on reliability of the all-in-one controller of the new energy automobile is achieved.

Description

Power-on control device and method of all-in-one controller and automobile

Technical Field

The invention belongs to the technical field of automobiles, and particularly relates to a power-on control device and method of an all-in-one controller and an automobile, in particular to a high-voltage power-on control device and method of an all-in-one controller of a new energy automobile and an automobile.

Background

The internal structure of the all-in-one controller of the new energy automobile is complex, and the electrifying reliability of the all-in-one controller is influenced.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention aims to provide a power-on control device and method of an all-in-one controller and an automobile, so as to solve the problem that the power-on reliability of the all-in-one controller of a new energy automobile is poor due to the complex internal structure of the all-in-one controller, and achieve the effect of improving the power-on reliability of the all-in-one controller of the new energy automobile.

The invention provides a power-on control device of an all-in-one controller, which is an all-in-one controller of an automobile and comprises a PDU (protocol data Unit), an MCU (microprogrammed control Unit), a VCU (virtual control Unit) and an ACU (access control Unit); the power-on control device of the all-in-one controller comprises: a control unit; the control unit is used for controlling the power-on of the all-in-one controller of the automobile; the control unit is also used for enabling the PDU to control the auxiliary driving module of the automobile to be electrified after the power-on self-test of the all-in-one controller of the automobile, and judging whether the auxiliary driving module is electrified successfully under the control of the PDU; the control unit is also used for enabling the PDU to control the main driving module of the automobile to be electrified if the auxiliary driving module is successfully electrified under the control of the PDU; the control unit is further configured to, if the auxiliary drive module fails to be powered up under the control of the PDU, control the MCU, the VCU, and/or the ACU to power up the auxiliary drive module again.

Optionally, the method further comprises: the control unit is further configured to determine whether the auxiliary drive module is powered on again successfully under the control of the MCU, the VCU, and the ACU after the MCU, the VCU, and/or the ACU controls the auxiliary drive module to be powered on again; the control unit is further configured to enable the PDU to control the main drive module of the automobile to be powered on again if the auxiliary drive module is powered on again successfully under the control of the MCU, the VCU, and the ACU; the control unit is further configured to determine a power-on failure of the all-in-one controller and disconnect a strong power supply of the all-in-one controller if the auxiliary drive module fails to be powered on again under the control of the MCU, the VCU, and the ACU.

Optionally, the method further comprises: the control unit is also used for judging whether the main driving module is successfully electrified under the control of the PDU after the PDU controls the main driving module of the automobile to be electrified; the control unit is further configured to determine that the power-on of the all-in-one controller is successful if the power-on of the main drive module is successful under the control of the PDU; the control unit is further configured to, if the power-on of the main drive module fails under the control of the PDU, control the MCU, the VCU, and/or the ACU to power on the main drive module again.

Optionally, the method further comprises: the control unit is further configured to determine whether the main drive module is powered on again successfully under the control of the MCU, the VCU, and the ACU after the MCU, the VCU, and/or the ACU controls the main drive module to be powered on again; the control unit is further configured to determine that the power-on of the all-in-one controller is successful if the power-on of the main drive module is successful again under the control of the MCU, the VCU, and the ACU; the control unit is further configured to determine a power-on failure of the all-in-one controller and disconnect a strong power supply of the all-in-one controller if the main drive module fails to be powered on again under the control of the MCU, the VCU, and the ACU.

Optionally, the controlling unit causes the MCU, the VCU, and/or the ACU to control the auxiliary driving module to be powered on again, and causes the MCU, the VCU, and/or the ACU to control the main driving module to be powered on again, including: enabling the VCU to execute logic processing functions in the PDU and enabling the MCU and the ACU to execute sampling functions and detection functions in the PDU, so that the MCU, the VCU and/or the ACU jointly execute the functions of the PDU to control the auxiliary drive module or the main drive module to be powered on again; or enabling the ACU to drive the auxiliary driving module to be powered on again, and enabling the MCU to drive the main driving module to be powered on again.

Optionally, wherein the main driving module includes: a main relay and a main pre-charging relay in a high-voltage power-on circuit of the automobile; a first reverse connection prevention module is arranged in a contact branch of the main pre-charging relay; the auxiliary driving module includes: an auxiliary relay and an auxiliary pre-charging relay in a high-voltage power-on circuit of the automobile; and a second reverse connection prevention module is also arranged in the contact branch of the auxiliary drive pre-charging relay.

In accordance with the above apparatus, a further aspect of the present invention provides an automobile comprising: the power-on control device of the all-in-one controller is provided.

The invention also provides a power-on control method of the automobile all-in-one controller, which is matched with the automobile and comprises a PDU (protocol data unit), an MCU (microprogrammed control unit), a VCU (virtual control unit) and an ACU (access unit); the power-on control method of the all-in-one controller of the automobile comprises the following steps: controlling an all-in-one controller of the automobile to be powered on; after the power-on self-test of the all-in-one controller of the automobile, enabling the PDU to control the power-on of an auxiliary driving module of the automobile, and judging whether the power-on of the auxiliary driving module under the control of the PDU is successful; if the auxiliary driving module is successfully electrified under the control of the PDU, the PDU controls the main driving module of the automobile to be electrified; and if the auxiliary drive module fails to be powered on under the control of the PDU, controlling the MCU, the VCU and/or the ACU to control the auxiliary drive module to be powered on again.

Optionally, the method further comprises: after the MCU, the VCU and/or the ACU control the auxiliary drive module to be powered on again, judging whether the auxiliary drive module is powered on again successfully under the control of the MCU, the VCU and the ACU; if the auxiliary driving module is successfully electrified again under the control of the MCU, the VCU and the ACU, enabling the PDU to control the main driving module of the automobile to be electrified again; and if the secondary power-on of the auxiliary driving module fails under the control of the MCU, the VCU and the ACU, determining the power-on fault of the all-in-one controller, and disconnecting the strong power supply of the all-in-one controller.

Optionally, the method further comprises: after the PDU is enabled to control the main driving module of the automobile to be powered on, judging whether the main driving module is powered on successfully under the control of the PDU; if the main driving module is successfully electrified under the control of the PDU, the success of electrifying the all-in-one controller is determined; and if the main drive module fails to be powered on under the control of the PDU, controlling the MCU, the VCU and/or the ACU to control the main drive module to be powered on again.

Optionally, the method further comprises: after the MCU, the VCU and/or the ACU control the main drive module to be powered on again, judging whether the main drive module is powered on again successfully under the control of the MCU, the VCU and the ACU; if the main drive module is successfully electrified again under the control of the MCU, the VCU and the ACU, the power-on success of the all-in-one controller is determined; and if the main drive module fails to be powered on again under the control of the MCU, the VCU and the ACU, determining that the all-in-one controller fails to be powered on, and disconnecting a strong power supply of the all-in-one controller.

Optionally, causing the MCU, the VCU, and/or the ACU to control the auxiliary drive module to be powered on again, and causing the MCU, the VCU, and/or the ACU to control the main drive module to be powered on again includes: enabling the VCU to execute logic processing functions in the PDU and enabling the MCU and the ACU to execute sampling functions and detection functions of the PDU, so that the MCU, the VCU and/or the ACU jointly execute the functions of the PDU to control the auxiliary drive module or the main drive module to be powered on again; or enabling the ACU to drive the auxiliary driving module to be powered on again, and enabling the MCU to drive the main driving module to be powered on again.

Therefore, according to the scheme of the invention, the PDU controls the auxiliary drive module of the automobile to be powered on, and when the PDU controls the auxiliary drive module to be powered on, the MCU, the ACU and the VCU control the auxiliary drive module to be powered on; after the auxiliary drive module is successfully electrified, the PDU controls the main drive module of the automobile to be electrified, and when the PDU controls the main drive module to be electrified and fails, the MCU, the ACU and the VCU control the main drive module to be electrified, so that the problem of poor electrifying reliability due to the complex internal structure of the all-in-one controller of the new energy automobile is solved, and the effect of improving the electrifying reliability of the all-in-one controller of the new energy automobile is achieved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural diagram of a power-on control apparatus of an all-in-one controller according to an embodiment of the present invention;

FIG. 2 is a block diagram of the internal components of the all-in-one controller;

FIG. 3 is a circuit block diagram of a PDU circuit board;

fig. 4 is a schematic flow chart of an embodiment of an overall high-voltage power-on process of the new energy automobile;

FIG. 5 is a graph illustrating the practical effect of the circuit of the present invention;

FIG. 6 is a schematic diagram of a high voltage power-up circuit;

FIG. 7 is a schematic flow chart of another embodiment of an overall high-voltage power-on process of the new energy automobile;

FIG. 8 is a flowchart illustrating a power-up control method of an all-in-one controller according to an embodiment of the present invention;

fig. 9 is a schematic flowchart of an embodiment of monitoring a power-up condition of the auxiliary driving module under the control of the MCU, the VCU, and/or the ACU in the method of the present invention;

fig. 10 is a schematic flowchart of an embodiment of monitoring a power-on condition of the main driving module under the control of the PDU in the method of the present invention;

fig. 11 is a schematic flow chart illustrating an embodiment of monitoring a power-up condition of the main drive module under the control of the MCU, the VCU, and/or the ACU in the method of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to an embodiment of the invention, a power-on control device of an all-in-one controller is provided. Referring to fig. 1, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The power-on control device of the all-in-one controller can be applied to the power-on control aspect of the all-in-one controller of the automobile, and the all-in-one controller of the automobile can comprise a PDU (protocol data Unit), an MCU (microprogrammed control Unit), a VCU (virtual control Unit) and an ACU (access unit). Specifically, the MCU is a main drive motor control unit, the BMS is a battery management system, the PDU is an energy distribution unit, the VCU is a whole vehicle control unit, and the ACU is an auxiliary drive control unit (a drive oil pump and an air pump) DC-DC is a vehicle-mounted high-voltage 27V conversion module. The communication among all modules is connected by a CAN bus. The power-on control device of the all-in-one controller may include: a control unit.

Specifically, the control unit may be configured to control the power-on of the all-in-one controller of the vehicle, and under the condition of the power-on self-test of the all-in-one controller of the vehicle, all relays in the high-voltage power-on circuit of the vehicle are in an off state. For example: and starting, firstly carrying out power-on self-test operation, software initialization and hardware reset by the all-in-one controller when the controller passes through an ACC gear. All relays are in an off state, if a problem exists, the corresponding problem is processed by a program, and the relays only need to be reset again according to the prompt. If the key switch is turned to the ON gear from the LOCK gear through the ACC, the low-voltage battery relay K4 is closed.

Specifically, the control unit may be further configured to control the PDU to power up an auxiliary driving module of the vehicle after power-on self-test of the all-in-one controller of the vehicle, and determine whether the power-on of the auxiliary driving module is successful under the control of the PDU. For example: the PDU is electrified to the auxiliary drive, and after the self-checking is out of order, the PDU detects the information that the key ACC transmitted, begins to start auxiliary drive motor (such as oil pump, air pump etc.). The auxiliary pre-charging relay K5 is closed firstly, when pre-charging is started, after the auxiliary pre-charging relay K5 is closed, the current rises smoothly, and when the fact that the auxiliary pre-charging voltage of K5 reaches 90% of the preset voltage is detected, the auxiliary relay K6 is closed. After delaying for another 10ms, the auxiliary pre-charging relay K5 is switched off, and the auxiliary drive is powered on.

Specifically, the control unit may be further configured to control the PDU to control the main driving module of the automobile to be powered on again if the auxiliary driving module is powered on successfully under the control of the PDU, and monitor a power-on condition of the main driving module under the control of the PDU. For example: and after the auxiliary drive is powered on, starting the main drive to be powered on. Closing the main pre-charging relay K1, waiting for the voltage to rise, detecting that the main pre-charging voltage of the main pre-charging relay K1 reaches 90% of the preset voltage, closing the main relay K2, and then delaying for 10ms and then opening the main pre-charging relay K1 (the step is similar to the auxiliary drive power-on).

Specifically, the control unit may be further configured to control the MCU, the VCU, and/or the ACU to power up the auxiliary drive module again if the auxiliary drive module fails to power up under the control of the PDU.

For example: the high-voltage power-on process can be controlled by the PDU (namely an energy configuration board) firstly, if the process is occasionally unsuccessful, the reset is not needed, and the program is automatically controlled by the VCU catcher to control the high-voltage power on the PDU, so that the restarting and the dual power-on modes are not needed, the stability of the system is improved, and the reliability of the system is also improved.

For example: when the key switch signal is triggered (namely the action of turning the key is detected), the PDU can automatically turn on and turn off the relay without passing through the VCU; when the PDU is not successfully electrified by self processing, namely when the high voltage fails, the PDU can also immediately receive the control of the VCU, the MCU and the ACU, and then the PDU is electrified again, so that the system does not need to be restarted, and the reliability of the system is also improved.

In an alternative embodiment, the method may further include: the specific process of monitoring the power-on condition of the auxiliary drive module under the control of the MCU, the VCU, and/or the ACU may specifically include:

specifically, the control unit may be further configured to determine whether the auxiliary drive module is powered on again successfully under the control of the MCU, the VCU, and the ACU after the MCU, the VCU, and/or the ACU controls the auxiliary drive module to be powered on again.

Specifically, the control unit may be further configured to, if the secondary power-on of the auxiliary drive module is successfully performed under the control of the MCU, the VCU, and the ACU, enable the PDU to control the power-on of the main drive module of the automobile again, and monitor the power-on condition of the main drive module under the control of the PDU.

Specifically, the control unit may be further configured to determine that the all-in-one controller is in a power-on failure if the auxiliary driving module fails to be powered on again under the control of the MCU, the VCU, and the ACU, and disconnect a strong power supply of the all-in-one controller.

Therefore, the reliability of the secondary power-on of the auxiliary drive module under the control of the MCU, the VCU and/or the ACU can be improved by monitoring the secondary power-on condition of the auxiliary drive module under the control of the MCU, the VCU and/or the ACU.

In an alternative embodiment, the method may further include: the specific process of monitoring the power-on condition of the main drive module under the control of the PDU may specifically include:

specifically, the control unit may be further configured to determine whether the power-on of the main driving module under the control of the PDU is successful after the PDU controls the power-on of the main driving module of the automobile.

Specifically, the control unit may be further configured to determine that the power-on of the all-in-one controller is successful if the power-on of the main driving module under the control of the PDU is successful.

Specifically, the control unit may be further configured to control the MCU, the VCU, and/or the ACU to power up the main drive module again if the main drive module fails to power up under the control of the PDU.

Therefore, the reliability of the power-on control of the main drive module under the control of the PDU can be ensured by monitoring the power-on condition of the main drive module under the control of the PDU.

In a further optional embodiment, may further include: the specific process of monitoring the re-powering-on condition of the main drive module under the control of the MCU, the VCU, and/or the ACU may specifically include:

specifically, the control unit may be further configured to determine whether the main drive module is powered on again successfully under the control of the MCU, the VCU, and the ACU after the MCU, the VCU, and/or the ACU controls the main drive module to be powered on again.

Specifically, the control unit may be further configured to determine that the power-on of the all-in-one controller is successful if the power-on of the main drive module is successful again under the control of the MCU, the VCU, and the ACU.

Specifically, the control unit may be further configured to determine that the all-in-one controller is in a power-on failure if the main drive module fails to be powered on again under the control of the MCU, the VCU, and the ACU, and disconnect a strong power supply of the all-in-one controller.

Therefore, the reliability and the safety of the secondary power-on of the main drive module under the control of the MCU, the VCU and/or the ACU can be ensured by monitoring the secondary power-on condition of the main drive module under the control of the MCU, the VCU and/or the ACU.

Optionally, the controlling unit causing the MCU, the VCU, and/or the ACU to control the auxiliary driving module to be powered on again, and causing the MCU, the VCU, and/or the ACU to control the main driving module to be powered on again may include: the control unit may be further specifically configured to enable the VCU to execute a logic processing function in the PDU, and enable the MCU and the ACU to execute a sampling function and a detection function in the PDU, so that the MCU, the VCU, and/or the ACU jointly execute the function of the PDU to control the auxiliary drive module or the main drive module to be powered on again.

For example: the VCU & & MCU & & ACU is powered on again, the logic processing module and the communication state collection module of fig. 2 are replaced by the VCU, and the sampling and detection module of fig. 2 is replaced by the MCU and the ACU. And correspondingly adjusting according to the detected information state of the whole vehicle, and if the restart condition is met, directly giving a corresponding action instruction to the PDU by the VCU according to the set logic to enable the relay to act and successfully electrify.

Or, the controlling unit may cause the MCU, the VCU, and/or the ACU to control the auxiliary driving module to be powered on again, and cause the MCU, the VCU, and/or the ACU to control the main driving module to be powered on again, and may further include: the control unit may be further configured to enable the ACU to drive the auxiliary driving module to be powered on again, and enable the MCU to drive the main driving module to be powered on again.

For example: according to the CAN communication principle, the control of the VCU is not needed, and only the MCU and the ACU are needed to give instructions independently to drive the PDU to drive the relay. MCU can drive main relay and the main pre-charge relay that drives, and ACU can drive the relay and assist and drive the pre-charge relay. The high-voltage power is switched on by enabling the corresponding relay to be switched on, so that the main drive motor and the auxiliary drive (oil pump and air pump) motor can be controlled to work. As for air conditioning, electric heating and electric defrosting, the engine can be automatically started without turning a key to ignite, thus wasting resources. The vehicle is started according to the requirements of a driver in the driving process.

Wherein, the main driving module may include: a main relay and a main pre-charging relay in a high-voltage power-on circuit of the automobile; a first anti-reverse connection module (such as a first anti-reverse connection diode D1) is arranged in a contact branch of the main pre-charging relay. The auxiliary driving module may include: an auxiliary relay and an auxiliary pre-charging relay in a high-voltage power-on circuit of the automobile; a second anti-reverse module (e.g., a second anti-reverse diode D2) is also provided in the contact branch of the auxiliary drive pre-charge relay K5.

Specifically, the high-voltage power-on circuit of the automobile can comprise: the system comprises a main pre-charging relay K1, a main relay K2, an electric air conditioner relay K3, a low-voltage 24V storage battery relay K4, an auxiliary drive pre-charging relay K5, an auxiliary drive relay K6, an electric defrosting relay K7 and an electric heating relay K8; a first anti-reverse diode D1 is provided in the line where the contacts of the main pre-charge relay K1 are located, and a second anti-reverse diode D2 is also provided in the line where the contacts of the auxiliary pre-charge relay K5 are located. The high-voltage power-on circuit does not generate impact current when being powered on, protects the relay from being burnt out, prevents reverse connection of D1 and D2, and ensures the safety of the circuit. The reverse connection prevention diodes D1 and D2 prevent the reverse connection of the high-voltage battery and bring irreversible damage to the controller. The circuit can normally operate without the D1 and D2 anti-reverse diodes.

Through a large number of tests, by adopting the technical scheme of the invention, the auxiliary driving module of the automobile is controlled to be powered on by the PDU, and when the PDU controls the auxiliary driving module to be powered on and fails, the MCU, the ACU and the VCU control the auxiliary driving module to be powered on; after the auxiliary driving module is successfully powered on, the PDU controls the main driving module of the automobile to be powered on, when the PDU controls the main driving module to be powered on unsuccessfully, the MCU, the ACU and the VCU control the main driving module to be powered on, the power-on strategy is safe and reliable, the dual power-on mode improves the stability of the system, and the driving experience of a driver is improved.

According to the embodiment of the invention, the automobile corresponding to the power-on control device of the all-in-one controller is also provided. The automobile may include: the power-on control device of the all-in-one controller is provided.

In the new energy automobile, controllers are definitely integrated in the future, and the controller is called an all-in-one controller. However, the all-in-one controller has the defects of multiple internal modules, complex structure, relatively serious mutual electromagnetic interference, influence on the internal communication of the controller and occasional unsuccessful phenomena of up-down high voltage electricity. Generally, when the power-on is unsuccessful, the handling operation is restarted again, which is effective, but undoubtedly brings bad driving experience to the vehicle owner, and even causes the vehicle owner to doubtful the safety of the vehicle.

In an alternative embodiment, the scheme of the invention adopts a simple and stable circuit and a new high-voltage power-on and power-off control strategy, so that the power-on is more stable.

All control strategies are related to the overall hardware circuit design: a detection circuit, a signal processing circuit, an operation circuit, and the like. In some schemes, a Vehicle Control Unit (VCU) receives and processes signals, and then controls the on-off of a relay according to a processing result to complete the up-down high voltage electricity, which only uses the VCU for control, so that the VCU has too many execution contents and is easy to be interfered, and the method is not stable and reliable enough. In other schemes, in a high-voltage battery relay strategy, the strategy of turning on and off a main drive (main positive) relay is to detect each state quantity of an automobile through an EVCU (the same as a VCU), and then a main drive motor controller MCU controls the on and off of the relay, so that the method is not flexible enough, the electrification can be ensured only by complex information interaction between the EVCU and the VCU, and the control logic is complex.

In summary, all the controls of the all-in-one controller can not bypass the VCU, and all the controls need to be controlled or forwarded by the VCU. The advantages of this are orderly communication and clear arrangement. Because of the danger of high-voltage power-on, some automobile state quantities need to be forwarded through the VCU, so that the automobile state is confirmed to be normal, and power-on can be carried out. In the all-in-one controller, the controllers are connected through a CAN bus, and specific reference may be made to the example shown in fig. 2. According to the characteristics of CAN communication, each node CAN transmit and receive. Therefore, the required information quantity can be forwarded by the VCU, and can also be directly obtained by the VCU, the high-voltage power-on process can be controlled by the PDU (namely the energy configuration board) firstly, and if the PDU is occasionally unsuccessful, the PDU high-voltage power-on process does not need to be reset, and the program is automatically controlled by the VCU.

The operation of the high voltage power-up circuit in the solution of the present invention is described in the following with reference to the examples shown in fig. 2 to 7.

In the all-in-one controller for a vehicle shown in fig. 2: MCU is the main motor control unit that drives, BMS is battery management system, PDU is the energy distribution unit, VCU is whole car control unit, ACU is the supplementary control unit (drive oil pump and air pump) DC-DC that drives 27V modules for the on-vehicle high pressure. The communication among all modules is connected by a CAN bus.

The PDU shown in fig. 3 is a control board for controlling on/off of the relay. As shown in fig. 3, the PDU may include modules for communication, sampling, driving, logic processing, and the like, such as a communication state quantity collection module, a sampling detection module, a relay driving module, a logic processing module, and the like. When the key switch signal is triggered (namely the action of turning the key is detected), the PDU can automatically turn on and turn off the relay without passing through the VCU; when the PDU is not successfully electrified by self processing, namely when the high voltage fails, the PDU can also immediately receive the control of the VCU, the MCU and the ACU, and then the PDU is electrified again, so that the system does not need to be restarted, and the reliability of the system is also improved. The power-on strategy in the scheme of the invention is safe and reliable, and the dual power-on modes improve the stability of the system and the driving experience of the driver.

As shown in fig. 2 and fig. 3, the interior of the all-in-one controller is connected through the CAN bus, so that the modules CAN communicate with each other, and when the PDU fails to be powered up logically by itself, the MCU, the ACU and the VCU CAN jointly control the PDU to be powered up.

In the power-up logic shown in fig. 4, the key switch is turned to the ON position from the LOCK position through the ACC position, and the low-voltage battery relay K4 is closed in fig. 6. In particular, as shown in figure 4,

and step 11, starting, namely firstly carrying out power-on self-test operation, software initialization and hardware reset on the all-in-one controller when the controller passes through an ACC gear. All relays are in an off state, if a problem exists, the problem is handled by a program, and the relay is reset again only according to the prompt.

And step 12, electrifying the auxiliary drive by the PDU, detecting information transmitted by the key ACC by the PDU after self-checking is not available, and starting the auxiliary drive motor (such as an oil pump, an air pump and the like). The auxiliary pre-charging relay K5 is closed firstly, when pre-charging is started, after the auxiliary pre-charging relay K5 is closed, the current rises smoothly, and when the fact that the auxiliary pre-charging voltage of K5 reaches 90% of the preset voltage is detected, the auxiliary relay K6 is closed. After delaying for another 10ms, the auxiliary pre-charging relay K5 is switched off, and the auxiliary drive is powered on.

The auxiliary drive (i.e., the auxiliary driver) refers to a controller in an all-in-one controller of the new energy vehicle, and includes a steering motor controller (such as an auxiliary control steering wheel) and an inflating motor controller (such as an air brake for a brake). The auxiliary drive is powered on, namely the auxiliary drive controller is powered on, and the operation corresponding to the power on is to enable the auxiliary drive relay to act (K5, K6).

The main drive (namely a main driver) refers to a power motor controller in the new energy vehicle all-in-one controller, and power is output by a power motor when the vehicle moves forwards and backwards. The main drive is powered on, namely the main drive controller is powered on, and the corresponding power-on operation is the main drive relay action (K1, K2).

In step 12, the auxiliary drive power-on self-test means: the controller is started to work, the working voltage is 24V, so that the power-on refers to 24V low voltage power-on, and then self-checking is carried out, and all the power-on self-checking are checking operations before the high voltage power-on is not carried out.

And step 13, starting the main drive to be electrified after the auxiliary drive is electrified. Closing the main pre-charging relay K1, waiting for the voltage to rise, detecting that the main pre-charging voltage of the main pre-charging relay K1 reaches 90% of the preset voltage, closing the main relay K2, and then delaying for 10ms and then opening the main pre-charging relay K1 (the step is similar to the auxiliary drive power-on). And step 13, completing the auxiliary drive power-on, namely successfully powering on the auxiliary drive controller at high voltage.

During this process, communication disturbances may occur due to disturbances such as precharge timeout and too fast a precharge failure, or a completely failed precharge failure. At this time, the PDU receives the vehicle state quantity, or the external input quantity such as the detection quantity has a problem (the PDU program generally has no problem).

And step 14, the VCU & & MCU & & ACU is powered on again, the logic processing module and the communication state collection module in fig. 3 are replaced by the VCU, and the sampling and detection module in fig. 3 is replaced by the MCU and the ACU. And correspondingly adjusting according to the detected information state of the whole vehicle, and if the restart condition is met, directly giving a corresponding action instruction to the PDU by the VCU according to the set logic to enable the relay to act and successfully electrify.

The PDU is an energy distribution unit, and whether each controller of the controller is powered on or not is controlled according to the vehicle key signal. In the example shown in fig. 3, there are four modules, namely control, sampling, detection and communication units. Because of hardware circuit, some functions of other modules are combined, the PDU can be completely replaced by the PDU, and instability caused by respective actions of the PDU modules is improved. Because there is a gap in the stability of several modules acting separately to perform the corresponding control processes, and one module acting independently to perform the corresponding control processes, this is especially true in the case of high pressure hazards on the vehicle.

And detecting the information state of the whole automobile, wherein if the PDU is interfered and the electrification is not successful, the states of all key parts of the automobile need to be checked, and if the relay is not adhered, the high-voltage battery is normal, the automobile communication is normal, the sensor is normal and the like. The operation of corresponding adjustment according to the detected information state of the whole vehicle is related to programs of all controllers, the VCU, the MCU and the ACU do not control the power-on condition under the normal condition, but if the PDU does not have power, the VCU, the MCU and the ACU need to control the power-on condition, for example, detection, control and the like are carried out, and the power-on is completed and then the original program part is executed.

When the restarting condition is met, according to the set logic, the VCU directly gives a corresponding action instruction to the PDU, so that the relay acts in the operation of successfully electrifying: the restarting condition can be that the information state of the whole vehicle has no problem, and the vehicle is restarted when no other faults are detected except that power is not supplied; the logic setting can be that three modules, namely VCU, MCU and ACU, are electrified in a combined mode, the three modules are matched together, and the logic is needed to allocate the three modules, so that three controller programs are matched with each other.

For the sampling resistor, a common resistor can be selected, but the resistance value is large, the sampling circuit is low-voltage, and the sampling is high-voltage. Because the sampling circuit cannot sample the high voltage directly, the purpose of the sampling is to measure the magnitude of the voltage actually output to the controller.

Fig. 5 shows that the actual measurement situation of power-on using the control strategy and the corresponding circuit has no unsuccessful power-on phenomenon and good effect.

The high voltage power-up circuit in the solution of the invention can be seen in the example shown in fig. 6. As shown in fig. 6, the high voltage power-on circuit may include: the first to eighth relays are K1 and K2 … … K8, the first to second anti-reverse diodes are D1 and D2, the first to second pre-charging resistors are R1 and R2, and the first to seventh protective tubes are F1 and F2 … … F7. The electric defrosting relay is characterized in that K1 is a main pre-charging relay, K2 is a main relay, K3 is an electric air-conditioning relay, K4 is a low-voltage 24V storage battery relay, K5 is an auxiliary driving pre-charging relay, K6 is an auxiliary driving relay, K7 is an electric defrosting relay, and K8 is an electric heating relay. D1 and D2 are anti-reverse diodes, R1 and R2 are pre-charging resistors, F1 and F2 … … F7 are protective tubes, and the connection mode of the devices can be as shown in the example of FIG. 6. By adopting the high-voltage electrifying circuit shown in FIG. 6, no impact current is generated during electrifying, the relay is protected from being burnt out, reverse connection of D1 and D2 is prevented, and the safety of the circuit is ensured. The reverse connection prevention diodes D1 and D2 prevent the reverse connection of the high-voltage battery and bring irreversible damage to the controller. The circuit can normally operate without the D1 and D2 anti-reverse diodes.

In fig. 6, T1 to T9 are points on a conductive line, and can be used as sampling points of a sampling circuit. Specifically, T1 to T9 are voltage sampling points, T9 is a reference point (0V) for sampling voltage, T1 is a point for sampling bus voltage, and T2 to T8 are all at the lower end of the relay. Taking T2 as an example: the main drive part is conducted between T1 and T2 no matter whether K1 or K2 is closed, so that the main drive can be judged to be closed by a relay when T2 is detected to have high voltage; otherwise, when the voltage of T2 is detected to be 0, the relay of the main drive is not closed.

The high-voltage electrifying strategy of the all-in-one controller in the scheme of the invention mainly controls the main drive motor and the auxiliary drive (oil pump and air pump) motor to work by turning on the corresponding relay and switching on the high-voltage electricity. As for air conditioning, electric heating and electric defrosting, the engine can be automatically started without turning a key to ignite, so that resources are wasted; the vehicle is started according to the requirements of a driver in the driving process.

In an alternative example, according to the CAN communication principle, it is not necessary to control via VCU, but the MCU and the ACU are only required to give commands individually to let the PDU drive the relay. MCU can drive main relay and the main pre-charge relay that drives, and ACU can drive the relay and assist and drive the pre-charge relay. This approach is more demanding for communication. Fig. 7 is a schematic flow chart of another embodiment of the overall high-voltage power-on process of the new energy automobile. As shown in fig. 7, the overall high-voltage power-on process of the new energy automobile may include:

and step 21, starting.

Step 22, the PDU powers on the auxiliary drive, whether the auxiliary drive powers on successfully is judged, and if the auxiliary drive powers on successfully, the step 23 is executed; and if the auxiliary drive is not electrified successfully, the ACU detects and processes the auxiliary drive and powers on the instruction again.

Step 23, after the auxiliary drive is powered on, the PDU powers on the main drive, judges whether the main drive is powered on successfully or not, if the main drive is powered on successfully, the power-on process is finished, and if the main drive is not powered on successfully, the MCU detects and processes the command to be powered on again; and if the main drive is electrified and identified again, the analysis error of the electrifying process is confirmed, and the strong electricity is cut off. After the main drive is successfully electrified, other relays can be triggered to act manually.

Since the processing and functions of the automobile of this embodiment are basically corresponding to the embodiment, principle and example of the device shown in fig. 1, the description of this embodiment is not given in detail, and reference may be made to the related description in the foregoing embodiment, which is not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, and when the key switch signal is detected to be triggered (namely, the action of turning the key exists), the PDU can automatically turn on and turn off the relay without passing through the VCU; when the PDU is not successfully electrified by self processing, namely when the high voltage fails, the PDU can also immediately receive the control of the VCU, the MCU and the ACU, and then the PDU is electrified again, so that the system does not need to be restarted, and the reliability of the system is also improved.

According to an embodiment of the present invention, a power-on control method for an all-in-one controller of an automobile corresponding to the automobile is also provided, as shown in fig. 8, which is a schematic flow chart of an embodiment of the method of the present invention. The power-on control method of the automobile all-in-one controller can be applied to the power-on control aspect of the automobile all-in-one controller, and the automobile all-in-one controller can comprise a PDU (protocol data Unit), an MCU (microprogrammed control Unit), a VCU (virtual control Unit) and an ACU (access unit). Specifically, the MCU is a main drive motor control unit, the BMS is a battery management system, the PDU is an energy distribution unit, the VCU is a whole vehicle control unit, and the ACU is an auxiliary drive control unit (a drive oil pump and an air pump) DC-DC is a vehicle-mounted high-voltage 27V conversion module. The communication among all modules is connected by a CAN bus. The power-on control method of the all-in-one controller of the automobile can comprise the following steps: step S110 to step S140.

In step S110, the all-in-one controller of the vehicle is controlled to be powered on, and in the case of power-on self-test of the all-in-one controller of the vehicle, all relays in the high-voltage power-on circuit of the vehicle are in an off state. For example: and starting, firstly carrying out power-on self-test operation, software initialization and hardware reset by the all-in-one controller when the controller passes through an ACC gear. All relays are in an off state, if a problem exists, the problem is handled by a program, and the relay is reset again only according to the prompt. If the key switch is turned to the ON gear from the LOCK gear through the ACC, the low-voltage battery relay K4 is closed.

In step S120, after the power-on self-test of the all-in-one controller of the vehicle, the PDU controls the power-on of the auxiliary driving module of the vehicle, and determines whether the power-on of the auxiliary driving module is successful under the control of the PDU. For example: the PDU is electrified to the auxiliary drive, and after the self-checking is out of order, the PDU detects the information that the key ACC transmitted, begins to start auxiliary drive motor (such as oil pump, air pump etc.). The auxiliary pre-charging relay K5 is closed firstly, when pre-charging is started, after the auxiliary pre-charging relay K5 is closed, the current rises smoothly, and when the fact that the auxiliary pre-charging voltage of K5 reaches 90% of the preset voltage is detected, the auxiliary relay K6 is closed. After delaying for another 10ms, the auxiliary pre-charging relay K5 is switched off, and the auxiliary drive is powered on.

In step S130, if the auxiliary driving module is successfully powered on under the control of the PDU, the PDU controls the main driving module of the automobile to be powered on again, and monitors the power-on condition of the main driving module under the control of the PDU. For example: and after the auxiliary drive is powered on, starting the main drive to be powered on. Closing the main pre-charging relay K1, waiting for the voltage to rise, detecting that the main pre-charging voltage of the main pre-charging relay K1 reaches 90% of the preset voltage, closing the main relay K2, and then delaying for 10ms and then opening the main pre-charging relay K1 (the step is similar to the auxiliary drive power-on).

In step S140, if the auxiliary drive module fails to be powered up under the control of the PDU, the MCU, the VCU, and/or the ACU is controlled to power up the auxiliary drive module again.

In an alternative embodiment, the method may further include: and monitoring the secondary power-on condition of the auxiliary drive module under the control of the MCU, the VCU and/or the ACU.

With reference to the flowchart of fig. 9, a specific process of monitoring the power-on condition of the auxiliary drive module under the control of the MCU, the VCU, and/or the ACU in step S140 is further described, where the specific process includes: step S210 to step S230.

Step S210, after the MCU, the VCU, and/or the ACU controls the auxiliary driving module to be powered on again, determining whether the auxiliary driving module is powered on again successfully under the control of the MCU, the VCU, and the ACU.

Step S220, if the auxiliary driving module is successfully electrified again under the control of the MCU, the VCU and the ACU, the PDU controls the main driving module of the automobile to be electrified again, and the electrification condition of the main driving module under the control of the PDU is monitored.

Step S230, if the secondary power-on of the auxiliary driving module fails under the control of the MCU, the VCU, and the ACU, determining a power-on failure of the all-in-one controller, and disconnecting the strong power supply of the all-in-one controller.

In an optional embodiment, the method may further include: and a specific process of monitoring the power-on condition of the main drive module under the control of the PDU.

With reference to the flowchart of fig. 10, a specific process of monitoring the power-on condition of the main drive module under the control of the PDU in step S130 is further described below, where the specific process includes: step S310 to step S330.

And step S310, after the PDU is enabled to control the main driving module of the automobile to be powered on, judging whether the main driving module is powered on successfully under the control of the PDU.

Step S320, if the power-on of the main driving module is successful under the control of the PDU, determining that the power-on of the all-in-one controller is successful.

Step S330, if the main drive module fails to be powered on under the control of the PDU, the MCU, the VCU and/or the ACU controls the main drive module to be powered on again.

In a further optional embodiment, may further include: and monitoring the power-on condition of the main drive module under the control of the MCU, the VCU and/or the ACU.

With reference to the flowchart of fig. 11, a specific process of monitoring the re-power-up condition of the main drive module under the control of the MCU, the VCU, and/or the ACU in step S330 is further described, where the specific process includes: step S410 to step S430.

Step S410, after the MCU, the VCU, and/or the ACU controls the main driving module to be powered on again, determining whether the main driving module is powered on again successfully under the control of the MCU, the VCU, and the ACU.

Step S420, if the main driving module is powered on again successfully under the control of the MCU, the VCU, and the ACU, it is determined that the all-in-one controller is powered on successfully.

Step S430, if the main driving module fails to be powered on again under the control of the MCU, the VCU and the ACU, determining that the all-in-one controller is powered on and disconnecting the strong power supply of the all-in-one controller.

Optionally, the step S140 of controlling the MCU, the VCU, and/or the ACU to control the auxiliary driving module to be powered on again, and the step S330 of controlling the MCU, the VCU, and/or the ACU to control the main driving module to be powered on again may include: and enabling the VCU to execute a logic processing function in the PDU, and enabling the MCU and the ACU to execute a sampling function and a detection function in the PDU, so that the MCU, the VCU and/or the ACU jointly execute the function of the PDU to control the auxiliary drive module or the main drive module to be powered on again.

Or, the step S140 of controlling the MCU, the VCU, and/or the ACU to control the auxiliary driving module to be powered on again, and the step S330 of controlling the MCU, the VCU, and/or the ACU to control the main driving module to be powered on again may include: and enabling the ACU to drive the auxiliary driving module to be powered on again, and enabling the MCU to drive the main driving module to be powered on again.

For example: according to the CAN communication principle, the control of the VCU is not needed, and only the MCU and the ACU are needed to give instructions independently to drive the PDU to drive the relay. The MCU can drive the main drive relay and the main drive pre-charge relay, and the ACU can drive the auxiliary drive relay and the auxiliary drive pre-charge relay. The high-voltage power is switched on by enabling the corresponding relay to be switched on, so that the main drive motor and the auxiliary drive (oil pump and air pump) motor can be controlled to work. As for air conditioning, electric heating and electric defrosting, the engine can be automatically started without turning a key to ignite, so that resources are wasted; the vehicle is started according to the requirements of a driver in the driving process.

Since the processing and functions implemented by the method of this embodiment substantially correspond to the embodiments, principles and examples of the automobile, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment, which is not described herein.

Through a large amount of experimental verifications, adopt the technical scheme of this embodiment, through making the inside CAN bus connection that passes through of all-in-one controller, consequently CAN intercommunicate between each module, when PDU was failed according to logical power-on by oneself, CAN be controlled PDU by MCU, ACU and VCU jointly and go up the electricity, dual power-on mode has improved the stability of system, has promoted driver's the experience of driving.

In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The power-on control device of the all-in-one controller is characterized in that the all-in-one controller of an automobile comprises a PDU (protocol data Unit), an MCU (microprogrammed control Unit), a VCU (virtual control Unit) and an ACU (access control Unit); the power-on control device of the all-in-one controller comprises: a control unit;

the control unit is used for controlling the power-on of the all-in-one controller of the automobile;

the control unit is also used for enabling the PDU to control the auxiliary driving module of the automobile to be electrified after the power-on self-test of the all-in-one controller of the automobile, and judging whether the auxiliary driving module is electrified successfully under the control of the PDU;

the control unit is also used for enabling the PDU to control the main driving module of the automobile to be electrified if the auxiliary driving module is successfully electrified under the control of the PDU;

the control unit is further configured to, if the auxiliary drive module fails to be powered on under the control of the PDU, control the MCU, the VCU, and/or the ACU to power on the auxiliary drive module again;

further comprising:

the control unit is also used for judging whether the main driving module is successfully electrified under the control of the PDU after the PDU controls the main driving module of the automobile to be electrified;

the control unit is further configured to determine that the power-on of the all-in-one controller is successful if the power-on of the main drive module is successful under the control of the PDU;

the control unit is further configured to, if the power-on of the main drive module fails under the control of the PDU, control the MCU, the VCU, and/or the ACU to power on the main drive module again.

2. The power-on control device of the all-in-one controller according to claim 1, further comprising:

the control unit is further configured to determine whether the auxiliary drive module is powered on again successfully under the control of the MCU, the VCU, and/or the ACU after the MCU, the VCU, and/or the ACU controls the auxiliary drive module to be powered on again;

the control unit is further configured to enable the PDU to control the main drive module of the automobile to be powered on again if the auxiliary drive module is powered on again successfully under the control of the MCU, the VCU, and/or the ACU;

the control unit is further configured to determine that the all-in-one controller is in a power-on failure if the auxiliary drive module fails to be powered on again under the control of the MCU, the VCU, and/or the ACU, and disconnect a strong power supply of the all-in-one controller.

3. The power-on control device of the all-in-one controller according to claim 2, further comprising:

the control unit is further configured to determine whether the main drive module is powered on again successfully under the control of the MCU, the VCU, and/or the ACU after the MCU, the VCU, and/or the ACU controls the main drive module to be powered on again;

the control unit is further configured to determine that the power-on of the all-in-one controller is successful if the power-on of the main drive module is successful again under the control of the MCU, the VCU, and/or the ACU;

the control unit is further configured to determine that the all-in-one controller is in a power-on failure if the main drive module fails to be powered on again under the control of the MCU, the VCU, and/or the ACU, and disconnect a strong power supply of the all-in-one controller.

4. The power-on control device of the all-in-one controller according to claim 3, wherein the control unit controls the auxiliary driving module to be powered on again and the MCU, the VCU and/or the ACU to be powered on again, and comprises:

enabling the VCU to execute logic processing functions in the PDU and enabling the MCU and the ACU to execute sampling functions and detection functions in the PDU, so that the MCU, the VCU and/or the ACU jointly execute the functions of the PDU to control the auxiliary drive module or the main drive module to be powered on again;

alternatively, the first and second electrodes may be,

and enabling the ACU to drive the auxiliary driving module to be powered on again, and enabling the MCU to drive the main driving module to be powered on again.

5. The power-on control device of the all-in-one controller according to claim 3, wherein the main driving module comprises: a main relay and a main pre-charging relay in a high-voltage power-on circuit of the automobile; a first reverse connection prevention module is arranged in a contact branch of the main pre-charging relay;

the auxiliary driving module includes: an auxiliary relay and an auxiliary pre-charging relay in a high-voltage power-on circuit of the automobile; and a second reverse connection prevention module is also arranged in the contact branch of the auxiliary drive pre-charging relay.

6. An automobile, comprising: the power-on control device of the all-in-one controller according to any one of claims 1 to 5.

7. A power-on control method of an all-in-one controller of an automobile according to claim 6, wherein the all-in-one controller of the automobile comprises a PDU, a MCU, a VCU and an ACU; the power-on control method of the all-in-one controller of the automobile comprises the following steps:

controlling an all-in-one controller of the automobile to be powered on;

after the power-on self-test of the all-in-one controller of the automobile, enabling the PDU to control the power-on of an auxiliary driving module of the automobile, and judging whether the power-on of the auxiliary driving module under the control of the PDU is successful;

if the auxiliary driving module is successfully electrified under the control of the PDU, the PDU controls the main driving module of the automobile to be electrified;

if the auxiliary drive module fails to be powered on under the control of the PDU, controlling the MCU, the VCU and/or the ACU to control the auxiliary drive module to be powered on again;

further comprising:

after the PDU is enabled to control the main driving module of the automobile to be powered on, judging whether the main driving module is powered on successfully under the control of the PDU;

if the main driving module is successfully electrified under the control of the PDU, the success of electrifying the all-in-one controller is determined;

and if the main drive module fails to be powered on under the control of the PDU, controlling the MCU, the VCU and/or the ACU to control the main drive module to be powered on again.

8. The power-on control method of an all-in-one controller for an automobile according to claim 7, further comprising:

after the MCU, the VCU and/or the ACU controls the auxiliary drive module to be powered on again, judging whether the auxiliary drive module is powered on again successfully under the control of the MCU, the VCU and/or the ACU;

if the auxiliary drive module is successfully electrified again under the control of the MCU, the VCU and/or the ACU, enabling the PDU to control the main drive module of the automobile to be electrified again;

and if the secondary power-on of the auxiliary driving module fails under the control of the MCU, the VCU and/or the ACU, determining the power-on fault of the all-in-one controller, and disconnecting the strong power supply of the all-in-one controller.

9. The power-on control method of an all-in-one controller for an automobile according to claim 8, further comprising:

after the MCU, the VCU and/or the ACU control the main drive module to be powered on again, judging whether the main drive module is powered on again successfully under the control of the MCU, the VCU and/or the ACU;

if the main drive module is successfully electrified again under the control of the MCU, the VCU and/or the ACU, determining that the all-in-one controller is successfully electrified;

and if the main drive module fails to be powered on again under the control of the MCU, the VCU and/or the ACU, determining that the all-in-one controller fails to be powered on, and disconnecting a strong power supply of the all-in-one controller.

10. The power-on control method of the all-in-one controller of the automobile according to claim 9, wherein the step of controlling the MCU, the VCU and/or the ACU to control the auxiliary driving module to be powered on again and the step of controlling the MCU, the VCU and/or the ACU to control the main driving module to be powered on again comprises the steps of:

alternatively, the first and second electrodes may be,