CN109828506B - New energy automobile electronic whole car control module static power consumption control system - Google Patents
New energy automobile electronic whole car control module static power consumption control system Download PDFInfo
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Abstract
The invention relates to the technical field of new energy automobile electronics, in particular to a new energy automobile electronic whole automobile control module static power consumption control system, which is applied to a new energy automobile and comprises the following components: the power supply system comprises a main power supply control circuit, a power supply circuit, an auxiliary power supply control circuit, a power supply management IC chip, a main control chip, a communication circuit and a wake-up interface circuit. The power supply structure is optimized, and the energy control circuit controls the on-off of the power supply to avoid the defects of the existing power supply network. Meanwhile, software controls the whole vehicle electronic system to realize low power consumption when the vehicle stops driving in different modes such as a working mode, a sleep mode and the like, and controls the power supply to be turned off to enable and disable when the vehicle enters the low power consumption mode, so that a remote wake-up function is realized. Meanwhile, the hardware awakening interface and the communication network software awakening interface are supplemented, so that the whole vehicle control module can be quickly corresponding, and driving feeling cannot be influenced due to low power consumption.
Description
Technical Field
The invention relates to the technical field of new energy automobile electronics, in particular to a static power consumption control system of a new energy automobile electronic whole automobile control module.
Background
With the development of the automobile industry and under the dual pressures of energy crisis and environmental pollution, electric automobiles have become an inevitable trend in the development of automobiles. Meanwhile, people have increasing material demands, and the comfort and the intelligent degree of automobiles are higher and higher. More and more electronic control systems are applied to automobiles to complete different functions of detection, data interaction, driving and the like.
The increase of electronic control systems increases the consumption of the power supply. The battery is just all sources of all energy of the new energy vehicle, the battery not only needs to provide running kinetic energy, but also is still in a working state if all electronic control units in the whole vehicle system, such as a whole vehicle controller (Vehicle Control Unit), a power control unit PCU (Power Control Unit), a battery management system BMS (Battery Management System), a motor controller MCU (Motor Control Unit) and the like, are in a period of time after the running, and the total consumption current can reach hundreds of milliamperes or even higher. The larger static power consumption can certainly lead the battery to be rapidly deficient, influence the continuous mileage of the automobile, reduce the service life of the battery and influence the overall driving feeling of the vehicle. In order to reduce the static power consumption of the vehicle-mounted electronic control unit, the design of the whole vehicle control hardware is required to consider the static low-power consumption design to optimize the power supply structure, and a control method for reducing the static power consumption is adopted, so that the vehicle-mounted electronic control unit can enter a dormant state when the vehicle stops running, and the battery is prevented from being exhausted. Meanwhile, when running needs to be started, the conversion between the dormant state and the normal working state can be quickly realized, and then the working mode is entered.
The traditional design scheme adopts a method of performing 'one-cut' closing control on a power supply, and closes all power supplies of the vehicle-mounted electronic control units to realize lower static power consumption. Although the purpose of reducing static power consumption is achieved to some extent. However, the power supply shutdown control method is only suitable for sub-components (such as a door and window controller, a wiper controller and the like) of a lower-layer electronic system of a vehicle, after the whole vehicle control power supply of the whole vehicle control unit is shut down, all circuits such as a motor controller MCU, an internal power supply, an on-line electrically erasable and electrically writable memory E2PROM and the like are terminated, and the vehicle control unit can enter a working state again only after being electrified again and initialized, and loses functions such as remote wakeup and the like, thereby influencing driving feeling.
Disclosure of Invention
The invention provides a static power consumption control system of a new energy automobile electronic whole automobile control module, which completes parallel output of electric quantity and mutual direct current isolation through diodes of two parallel working power supply branches, so that the parallel output and the mutual direct current isolation are not mutually influenced. And the voltages of the two power supply branches are input to an analog-to-digital conversion ADC of the motor controller after being attenuated by resistor voltage division, whether the voltages of the two power supply branches are normal or not is judged by an internal program of the motor controller, the abnormal power supply branch is closed by a forbidden energy signal generated by the motor controller, the normal power supply circuit still works, and a message is generated and sent to an automobile communication bus.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
the utility model provides a new energy automobile electron whole car control module static power consumption control system which characterized in that includes:
the power management chip is connected with a main power supply and is powered by the main power supply, and the power management chip is switched between a normal working state and a dormant state under the action of an external hardware wake-up signal;
the main control chip is connected with the power management chip, works under the working voltage provided by the power management chip and generates a control signal;
the communication circuit is respectively connected with the main control chip, the power management chip and an internal power supply and is switched between a normal working state and a dormant state under the action of a software wake-up signal; the internal power supply is connected with the main power supply and converts the voltage provided by the main power supply into the voltage required by the communication circuit;
the auxiliary power supply control circuit is connected with the main control chip, and is turned off to enter a low power consumption mode or turned on to enter a working mode under the enabling signal of the main control chip.
Preferably, a power interface circuit is included between the main power supply and the power management chip, and the power interface circuit includes:
the source electrode of the first switch tube (Q1) is connected with the main power supply, the drain electrode of the first switch tube is connected with the power supply output end, and the power supply output end is connected with the power supply management chip;
a voltage stabilizing tube (T1) connected between the main power supply and the grounding end;
the resistor voltage dividing circuit is connected between the power output end and the grounding end, and a voltage dividing node of the resistor voltage dividing circuit is connected with the grid electrode of the first switch (Q1);
and the energy storage filter capacitor (C1) is connected between the power supply output end and the grounding end.
Preferably, the auxiliary power supply control circuit:
the source electrode of the first triode (Q3) is connected with the input end of the power management chip, and the grid electrode of the first triode (Q3) is connected with the source electrode of the first triode (Q3) through a third resistor (R3); the drain electrode of the first triode (Q3) is connected with an in-board pull-up power supply;
the grid electrode of the second triode (Q4) is connected with the main control chip through an eighth resistor (R8), the drain electrode of the second triode (Q4) is connected with the grid electrode of the first triode (Q3) through a fourth resistor (R4), and the source electrode of the second triode (Q4) is grounded; a ninth resistor (R9) is connected between the source electrode and the grid electrode of the second triode (Q4).
Preferably, the auxiliary power supply control circuit includes a second auxiliary power supply control circuit that controllably outputs a driving power supply, including:
a fifth triode (Q5), wherein a gate of the fifth triode (Q5) is connected to the main control chip through a sixth resistor (R6), a source of the fifth triode (Q5) is connected to the ground, a drain of the fifth triode (Q5) is connected to the main power supply through a fifth resistor (R5), and a seventh resistor (R7) is connected between the gate of the fifth triode (Q5) and the ground;
the control end of the second switching tube (Q2) is connected with the drain electrode of the fifth triode (Q5); the second switching tube (Q2) is controllably connected to the output terminals of the main power supply and the driving power supply.
Preferably, the static power consumption control system of the electronic whole vehicle control module of the new energy automobile comprises a normal working mode, and the normal working mode comprises:
a software communication wake-up trigger signal controls the communication circuit to enter a normal working mode, the communication circuit supplies power, and the communication circuit is communicated with the main control chip and the power management chip and is communicated with an external vehicle communication network module; the power management chip controls the auxiliary power control circuit to supply power to the pull-up power supply in the board, and the stable voltage signal output by the main control chip controls the auxiliary power control circuit to enable to be started.
Preferably, the normal operation mode further includes:
an external hardware wake-up trigger signal controls the power management chip to enter a normal working mode, the power supply voltage provided by the power management chip is the voltage required by the main control chip and the power supply pulled up in the board, the communication circuit supplies power, and the communication circuit is communicated with the main control chip and the power management chip and is communicated with an external vehicle communication network module; the power management chip controls the auxiliary power supply control circuit to supply power to the pull-up power supply in the board, and the stable voltage signal output by the main control chip controls the auxiliary power supply control circuit to enable to be started.
Preferably, under the normal operation of a software communication wake-up power management chip, the main control chip controls the first triode (Q3) and the second triode (Q4) through outputting stable high level, the first triode (Q3) and the second triode (Q4) are opened, and an in-board pull-up power supply is started; the main control chip controls the second switching tube (Q2) and the fifth triode (Q5) through outputting stable high level, the second switching tube (Q2) and the fifth triode (Q5) are opened, and the driving power supply is started.
Preferably, under normal operation of a hardware wake-up power management chip, the main control chip controls the first triode (Q3) and the second triode (Q4) by outputting stable high level, and the first triode (Q3) and the second triode (Q4) are turned on, so that an in-board pull-up power supply is turned on; the main control chip controls the second switching tube (Q2) and the fifth triode (Q5) through outputting stable high level, the second switching tube (Q2) and the fifth triode (Q5) are opened, and the driving power supply is started.
Preferably, the system for controlling static power consumption of the electronic whole vehicle control module of the new energy vehicle comprises a sleep state mode, wherein the sleep state comprises:
an external trigger signal is used for transmitting information to the main control chip and the power management chip, the main control chip controls the communication circuit to enter a sleep mode and controls the auxiliary power control circuit to enable and disable, the main control chip is communicated with the power chip, the power management chip enters the sleep mode, and the power in the board is closed.
Preferably, in the sleep state, the main control chip controls the first triode (Q3) and the second triode (Q4) by outputting a stable low level, and the first triode (Q3) and the second triode (Q4) are turned off, so that a pull-up power supply in the board is turned off; the main control chip controls the second switching tube (Q2) and the fifth triode (Q5) through outputting stable low level, the second switching tube (Q2) and the fifth triode (Q5) are closed, and the driving power supply is closed.
The beneficial effects are that: by adopting the technical scheme, the invention adopts a design method combining hardware low-power consumption design and software low-power consumption control. The power supply structure is optimized to realize that normal power supply and the closable power supply are independent, so that the defects of the existing power supply network are avoided. Meanwhile, software controls the whole vehicle control electronic system to realize low power consumption when the vehicle stops driving by switching different modes such as a working mode, a dormant mode and the like. The defect that the traditional new energy automobile can enter the working state again after being electrified and initialized is overcome, the remote wake-up function is realized, and the driving feeling is further optimized. Meanwhile, the hardware awakening interface and the communication network software awakening interface are supplemented, so that the whole vehicle control module can be corresponding to the low power consumption rapidly, and the driving feeling cannot be influenced due to the low power consumption.
Drawings
FIG. 1 shows a power supply structure of an electronic whole vehicle control module of a new energy automobile;
FIG. 2 is a diagram of a control circuit of a new energy automobile;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1, the power supply structure of the electronic whole vehicle control module of the new energy automobile provided by the invention comprises: the power supply system comprises a main power supply control circuit 1, a power supply circuit 2, an auxiliary power supply control circuit, a power supply management IC chip 4, a main control chip 6, a communication circuit 3 and a wake-up interface circuit 11.
In the embodiment of the invention, a main power supply control circuit 1 is connected with a main power supply, the main power supply control circuit is used for controlling the power supply output of the main power supply, and the main power supply control circuit 1 is connected with a power supply circuit 2, an auxiliary power supply control circuit and a power supply management IC chip 4 and provides working power supply for the main power supply control circuit. The power supply circuit 2 is connected with the communication circuit 3, the power supply circuit 2 supplies power to all communication loops of the vehicle-mounted communication vehicle, and the communication loops, the power management IC chip 4 and the main control chip 6 are communicated with each other and communicate with other modules on an external vehicle communication network. The power management IC chip 4 is connected with the in-board power supply 5, and the in-board power supply 5 is connected with and controlled by the main control chip 6; the power management IC chip 4 is connected with the communication circuit 3 and realizes software wakeup; the power management IC chip 4 is connected to the wake-up interface circuit 11 and implements hardware wake-up.
The auxiliary power supply control circuit also comprises a first auxiliary power supply control circuit 7 and a second auxiliary power supply control circuit 9; the auxiliary power supply control circuit is connected with an auxiliary power supply, the first auxiliary power supply 7 is connected with an input pull-up power supply 8 in the board and realizes the functions of pulling up fixed level of ports such as frequency quantity and switching value, and the second auxiliary power supply 9 is connected with an output driving power supply 10 and realizes the power supply control of the output driving power supply; the communication circuit 3 is connected with the power supply circuit 2, the main control chip 6 and the power management IC chip 4 and realizes the normal operation state-sleep state transition.
Referring to fig. 2, a structure diagram of an electronic whole vehicle control circuit of a new energy automobile is provided.
In the embodiment of the invention, the main power supply is powered by the outside, and the power interface circuit consists of a voltage stabilizing tube T1, a metal oxide semiconductor field effect transistor Q1, a first voltage dividing resistor R1, a second voltage dividing resistor R2 and an energy storage filter capacitor C1. The slow start of the power supply is realized through the power-on self-starting metal oxide semiconductor field effect transistor Q1. The voltage stabilizing tube T1 mainly realizes the protection of a circuit. The voltage division guarantee circuit of the first voltage division resistor R1 and the second voltage division resistor R2 realizes a full working state in the full voltage range of the metal oxide semiconductor field effect transistor Q1. The vehicle-mounted communication circuit power supply is arranged on an internal power supply (constant power). The power management IC chip generates 5V reference voltage and 3.3V reference voltage in the board, mainly supplies power to key ICs such as the main control chip 6 in the board, and provides a sampling reference.
In the embodiment of the invention, the main control chip 6 in the circuit structure realizes the core control of the whole vehicle control module, and the main control chip communicates with the power management IC chip 4, communicates with the communication circuit 3, inputs the enabling of the pull-up power supply 8 in the control panel and controls the enabling of the output driving power supply 10.
In the embodiment of the invention, the input pull-up power supply 8 in the board mainly comprises a first triode Q3 and a second triode Q4; the third resistor R3, the fourth resistor R4, the eighth resistor R8 and the ninth resistor R9. The functions of pulling up fixed level of ports such as frequency quantity, switching quantity and the like are realized. The second triode Q4 is controlled by the main control chip 6, and after the first triode Q3 is opened, a pull-up power supply is input into the board for powering on. If the motor needs to enter a normal working state, the motor controller controls the second triode Q4, the first triode Q3 is opened, and the in-board pull-up power supply is opened. If the user needs to enter the sleep state, the main control chip 6 controls the second triode Q4, the first triode Q3 is closed, and the pull-up power supply in the board is closed. And closing the pull-up power supply of the input quantity port in the rear plate.
In the embodiment of the invention, the output driving power supply 10 mainly realizes the power supply control of driving circuits such as a HSD, LSD, H bridge circuit of a whole vehicle control electronic control system. The second switching tube Q2 is controlled by a second switching tube Q2, a fifth triode Q5, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7, and then output driving power supply switching control is realized. If the normal working state is needed, the micro-control IO port outputs high level to control the fifth triode Q5, the second switching tube Q2 is opened, and the output driving power supply is opened. If the user needs to enter a dormant state, the IO port of the main control chip outputs low level to control the fifth triode Q5, the second switching tube Q2 is closed, and the output power supply is driven and the power supply is closed.
In the embodiment of the invention, when the sleep mode needs to be entered, an external hardware sleep signal or a software CAN sleep signal trigger signal is transmitted to the main control chip 6 and the power management IC chip 4, the main control chip 6 controls the communication circuit 3 to enter the sleep mode, and meanwhile, a stable low level is output through an IO port, and the first triode Q3 and the second triode Q4 are controlled to be closed, so that an input pull-up power supply in the panel is closed. And the second switching tube Q2 and the fifth triode Q5 are controlled to be closed by the stable low level output through the IO port, and then the driving power supply is closed. And meanwhile, the main control chip 6 is communicated with the power management IC chip 4, the power management IC chip 4 enters a sleep mode, and the power supply in the rear-stage board is turned off.
In the embodiment of the present invention, when the hardware wake-up signal is transmitted to the power management IC chip 4, the power management IC chip 4 enters the normal operation mode from the sleep mode, and simultaneously outputs a stable power supply voltage to power the internal key IC chip and the main control chip 6, and the main control chip 6 is started, and the power supply powers all the communication loops, and the communication loops and the main control chip 6 communicate with each other and communicate with other modules on the external vehicle communication network. The main control chip 6 outputs stable high level through the IO port, controls the first triode Q3 and the second triode Q4 to be opened, and then starts the in-board input pull-up power supply. And outputting stable high level through the IO port, and controlling the second switching tube Q2 and the fifth triode Q5 to be opened so as to start the driving power supply.
In the embodiment of the invention, when the software communication wake-up trigger signal is transmitted to the CAN network, the CAN IC enters a normal working mode from a dormant mode, and simultaneously outputs a stable voltage signal control signal to the power management IC chip 4, and the power management IC chip 4 outputs a stable power supply voltage to supply power to the internal key IC and the main control chip 6, the main control chip 6 is started, and the communication loop and the main control chip 6 are communicated with each other and other modules on an external vehicle communication network. The main control chip 6 outputs stable high level through the IO port, controls the first triode Q3 and the second triode Q4 to be opened, and then starts the in-board input pull-up power supply. And outputting stable high level through the IO port, and controlling the second switching tube Q2 and the fifth triode Q5 to be opened so as to start the driving power supply.
According to the embodiment, the low-power-consumption dormancy/awakening control method of the electronic whole vehicle control module of the new energy automobile adopts the low-power-consumption power supply structural design, and the processor is converted into the working mode and the dormancy mode to save the static power consumption of the electronic whole vehicle control module of the new energy automobile to the greatest extent by using the auxiliary power supply to work together with the main power supply. The method solves the defects of the existing new energy automobile, avoids the defect that the sleeping state can be restarted and then the automobile can enter the working state again after being initialized, realizes the remote wake-up function and further optimizes the driving feeling. Meanwhile, the hardware awakening interface and the communication network software awakening interface are supplemented, so that the whole vehicle control module can be corresponding to the low power consumption rapidly, and the driving feeling cannot be influenced due to the low power consumption.
The above description of the specific embodiments of the present invention has been given by way of example only, and the present invention is not limited to the above described specific embodiments. Any equivalent modifications and substitutions for this practical use will also occur to those skilled in the art, and are within the scope of the present invention. Accordingly, equivalent changes and modifications are intended to be included within the scope of the present invention without departing from the spirit and scope thereof.
Claims (9)
1. The utility model provides a new energy automobile electron whole car control module static power consumption control system which characterized in that includes:
the power management chip is connected with a main power supply and is powered by the main power supply, and the power management chip is switched between a normal working state and a dormant state under the action of an external hardware wake-up signal;
the main control chip is connected with the power management chip, works under the working voltage provided by the power management chip and generates a control signal;
the communication circuit is respectively connected with the main control chip, the power management chip and an internal power supply and is switched between a normal working state and a dormant state under the action of a software wake-up signal; the internal power supply is connected with the main power supply and converts the voltage provided by the main power supply into the voltage required by the communication circuit;
the auxiliary power supply control circuit is connected with the main control chip, and is turned off to enter a low power consumption mode or turned on to enter a working mode under the enabling signal of the main control chip;
the auxiliary power supply control circuit includes:
the source electrode of the first triode (Q3) is connected with the input end of the power management chip, and the grid electrode of the first triode (Q3) is connected with the source electrode of the first triode (Q3) through a third resistor (R3); the drain electrode of the first triode (Q3) is connected with an in-board pull-up power supply;
the grid electrode of the second triode (Q4) is connected with the main control chip through an eighth resistor (R8), the drain electrode of the second triode (Q4) is connected with the grid electrode of the first triode (Q3) through a fourth resistor (R4), and the source electrode of the second triode (Q4) is grounded; a ninth resistor (R9) is connected between the source electrode and the grid electrode of the second triode (Q4).
2. The system of claim 1, wherein a power interface circuit is included between the main power supply and the power management chip, and the power interface circuit includes:
the source electrode of the first switch tube (Q1) is connected with the main power supply, the drain electrode of the first switch tube is connected with the power supply output end, and the power supply output end is connected with the power supply management chip;
a voltage stabilizing tube (T1) connected between the main power supply and the grounding end;
the resistor voltage dividing circuit is connected between the power output end and the grounding end, and a voltage dividing node of the resistor voltage dividing circuit is connected with the grid electrode of the first switch tube (Q1);
and the energy storage filter capacitor (C1) is connected between the power supply output end and the grounding end.
3. The system of claim 1, wherein the secondary power control circuit comprises a second secondary power control circuit for controllably outputting a driving power, comprising:
a fifth triode (Q5), wherein a gate of the fifth triode (Q5) is connected to the main control chip through a sixth resistor (R6), a source of the fifth triode (Q5) is connected to the ground, a drain of the fifth triode (Q5) is connected to the main power supply through a fifth resistor (R5), and a seventh resistor (R7) is connected between the gate of the fifth triode (Q5) and the ground;
the control end of the second switching tube (Q2) is connected with the drain electrode of the fifth triode (Q5); the second switching tube (Q2) is controllably connected to the output terminals of the main power supply and the driving power supply.
4. The system of claim 3, wherein a software communication wake-up trigger signal controls the communication circuit to enter a normal operation mode, the communication circuit is powered, and the communication circuit is in communication with the main control chip and the power management chip and an external vehicle communication network module; the power management chip controls the auxiliary power control circuit to supply power to the pull-up power supply in the board, and the stable voltage signal output by the main control chip controls the auxiliary power control circuit to enable to be started.
5. The system of claim 3, wherein an external hardware wake-up trigger signal controls the power management chip to enter a normal operation mode, a power supply voltage provided by the power management chip is a voltage required by the main control chip and an on-board pull-up power supply, the communication circuit supplies power, and the communication circuit is in communication with the main control chip and the power management chip and is in communication with an external vehicle communication network module; the power management chip controls the auxiliary power supply control circuit to supply power to the pull-up power supply in the board, and the stable voltage signal output by the main control chip controls the auxiliary power supply control circuit to enable to be started.
6. The system according to claim 3, wherein a software communication wake-up power management chip controls the first transistor (Q3) and the second transistor (Q4) to be turned on by outputting a stable high level when the power management chip is operating normally, and the first transistor (Q3) and the second transistor (Q4) are turned on; the main control chip controls the second switching tube (Q2) and the fifth triode (Q5) through outputting stable high level, the second switching tube (Q2) and the fifth triode (Q5) are opened, and the driving power supply is started.
7. The system according to claim 3, wherein the main control chip controls the first transistor (Q3) and the second transistor (Q4) to be turned on by outputting a stable high level under normal operation of a hardware wake-up power management chip, and the in-board pull-up power is turned on; the main control chip controls the second switching tube (Q2) and the fifth triode (Q5) through outputting stable high level, the second switching tube (Q2) and the fifth triode (Q5) are opened, and the driving power supply is started.
8. The system of claim 3, wherein in a sleep state, an external trigger signal transmits information to the main control chip and the power management chip, the main control chip controls the communication circuit to enter a sleep mode and controls the auxiliary power control circuit to enable and disable, the main control chip communicates with the power management chip, the power management chip enters the sleep mode, and the on-board power is turned off.
9. The system according to claim 3, wherein in a sleep state, the main control chip controls the first transistor (Q3) and the second transistor (Q4) by outputting a stable low level, and the first transistor (Q3) and the second transistor (Q4) are turned off, so that an in-board pull-up power supply is turned off; the main control chip controls the second switching tube (Q2) and the fifth triode (Q5) through outputting stable low level, the second switching tube (Q2) and the fifth triode (Q5) are closed, and the driving power supply is closed.
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