CN108275091B - ECU power supply management system of automobile electric tail door - Google Patents
ECU power supply management system of automobile electric tail door Download PDFInfo
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- CN108275091B CN108275091B CN201810114290.0A CN201810114290A CN108275091B CN 108275091 B CN108275091 B CN 108275091B CN 201810114290 A CN201810114290 A CN 201810114290A CN 108275091 B CN108275091 B CN 108275091B
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Abstract
The invention discloses an ECU power supply management system of an automobile electric tail gate, which comprises a control mainboard, a power supply module, a motor driving power supply module and a control circuit power supply module, wherein the power supply module is respectively and electrically connected with the motor driving power supply module and the control circuit power supply module; the motor driving power supply module comprises a motor driving power supply reverse polarity protection module and a motor driving power supply voltage stabilization detection module; the control circuit power supply module comprises a control circuit reverse polarity protection module and a control circuit voltage-stabilizing filtering module; the motor driving power supply voltage stabilization detection module is electrically connected with the first bridge type motor driving module, the high-end voltage driving module and the second bridge type motor driving module respectively; the control circuit voltage-stabilizing filtering module is respectively and electrically connected with the fault detection circuit module, the signal pull-up circuit module, the external LED circuit module, the buzzer circuit module, the EEPROM circuit module and the high-speed CAN transceiver. The invention has the advantages of more stable and effective power output, graded control and management of the power supply, no mutual interference and high power supply efficiency.
Description
Technical Field
The invention relates to the technical field of power supply management equipment, in particular to an ECU power supply management system of an automobile electric tail gate.
Background
The power management system is the most core functional module of the automobile electric tail gate controller and supplies working power to other functional modules. The power management efficiency is directly affected by the harmonic generated by the input and output of the power supply.
Chinese patent CN202841042U discloses a "whole vehicle power management system", which includes: the generator comprises a storage battery and a generator excitation circuit electrically connected with the storage battery; the electric quantity monitoring module ECU is electrically connected with the storage battery; the electric appliance monitoring module is electrically connected with the storage battery and connected with the electric quantity monitoring module ECU in parallel; the generator excitation circuit is also electrically connected with a circuit formed by connecting the electric quantity monitoring module ECU and the electric appliance monitoring module in parallel. Although the scheme of the invention can reduce the oil consumption of the whole vehicle and prolong the service life of the generator, the reasonable distribution of the power supply only has the functions of electric quantity monitoring and electric appliance monitoring, and does not make substantial breakthrough on the effective and reasonable output of the power supply.
In the prior art, power supply of each circuit power supply in an automobile tail door ECU power supply system is not independently controlled, mutual interference is quite large, current and voltage of motor operation are not stable, and sufficient load and overload capacity during motor operation cannot be guaranteed. The power input end has no reverse polarity protection and overvoltage protection capability. The input/output ports lack the function of protecting the power supply and the ground from short circuit. The current carrying capacity of the power circuit is too low, the power circuit cannot bear overlarge working current, the continuous and stable work of the whole system cannot be guaranteed, the static power consumption is large, and the cruising ability of a product is affected.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the ECU power supply management system for the electric tail gate of the automobile, after the power supply management system is used, the power supply output is more stable and effective, the power supply module is divided into two paths of power supplies to the motor driving power supply module and the control circuit power supply module, the power supply hierarchical control management is realized, the power supply efficiency is high, and the cruising ability of the automobile is prolonged.
In order to solve the technical problems, the invention adopts the technical scheme that:
an ECU power supply management system of an automobile electric tail gate comprises a control main board, a power supply module, a motor driving power module and a control circuit power module, wherein the power supply module, the motor driving power module and the control circuit power module are arranged on the control main board;
the motor driving power supply module comprises a motor driving power supply reverse polarity protection module and a motor driving power supply voltage stabilization detection module, the motor driving power supply reverse polarity protection module is arranged at the front end of the motor driving power supply voltage stabilization detection module, and the motor driving power supply reverse polarity protection module is electrically connected with the motor driving power supply voltage stabilization detection module in series;
the control circuit power supply module comprises a control circuit reverse polarity protection module and a control circuit voltage-stabilizing filter module, the control circuit reverse polarity protection module is arranged at the front end of the control circuit voltage-stabilizing filter module, and the control circuit reverse polarity protection module is electrically connected with the control circuit voltage-stabilizing filter module in series;
the input end of the motor driving power supply reverse polarity protection module is electrically connected with the input end of the control circuit reverse polarity protection module in parallel;
the front end of the motor driving power supply voltage stabilization detection module is respectively and electrically connected with a first bridge type motor driving module, a high-end voltage driving module and a second bridge type motor driving module, the first bridge type motor driving module is electrically connected with an electric strut motor, the high-end voltage driving module is electrically connected with a tail gate unlocking motor, and the second bridge type motor driving module is electrically connected with a tail gate self-absorption motor;
the output end of the control circuit voltage-stabilizing filtering module is respectively and electrically connected with the fault detection circuit module, the signal pull-up circuit module, the external LED circuit module, the buzzer circuit module, the EEPROM circuit module and the high-speed CAN transceiver.
In order to solve the technical problem, the invention adopts the further technical scheme that:
furthermore, the motor driving power supply reverse polarity protection module comprises an input filter capacitor and a field effect transistor;
the input filter capacitor comprises a first input filter capacitor and a second input filter capacitor, and the first input filter capacitor and the second input filter capacitor are electrically connected in series and grounded;
a first diode is connected in parallel between a grid electrode and a source electrode of the field effect transistor, the grid electrode is connected with a first divider resistor in series, one end of the first divider resistor is grounded, and the other end of the first divider resistor is electrically connected with the first diode;
the capacitance values of the first input filter capacitor and the second input filter capacitor are both 100nF, the resistance value of the first voltage dividing resistor is 2.2k omega, the type of the field effect transistor is IPD70P04P4-09, the field effect transistor is triggered and conducted by an external power supply, and the voltage value of the external power supply is 9V-16V.
Further, the motor driving power supply voltage stabilization detection module comprises an energy storage filter capacitor, a first bidirectional diode, a first high-frequency filter capacitor, a second voltage division resistor and a third voltage division resistor;
the energy storage filter capacitor is electrically connected with a first bidirectional diode in parallel and is grounded, the first high-frequency filter capacitor is electrically connected with a third voltage dividing resistor in parallel and is grounded, and the second voltage dividing resistor is connected in series between the parallel connection end of the energy storage filter capacitor and the first bidirectional diode and the parallel connection end of the first high-frequency filter capacitor and the third voltage dividing resistor;
the capacitance value of the energy storage filter capacitor is 1000 muF, the capacitance value of the first high-frequency filter capacitor is 10nF, the resistance value of the second divider resistor is 1M omega, and the resistance value of the third divider resistor is 200k omega.
Furthermore, the control circuit reverse polarity protection module comprises a bypass vibration elimination capacitor, a second diode and a second bidirectional diode;
one end of the bypass vibration-damping capacitor is electrically connected with the anode of the second diode in parallel, the other end of the bypass vibration-damping capacitor is grounded, one end of the second bidirectional diode is electrically connected with the cathode of the second diode, and the other end of the second bidirectional diode is grounded;
the capacitance value of the bypass vibration elimination capacitor is 100 nF.
The control circuit voltage-stabilizing filtering module comprises a control power supply detection module and a control power supply output module, wherein the control power supply detection module is electrically connected with the control power supply output module in parallel;
the control power supply detection module comprises a fourth voltage-dividing resistor, a fifth voltage-dividing resistor and a second high-frequency filter capacitor, wherein the fifth voltage-dividing resistor is electrically connected with the second high-frequency filter capacitor in parallel, and the parallel end of the fifth voltage-dividing resistor is electrically connected with the fourth voltage-dividing resistor;
the control power supply output module comprises a voltage stabilization chip with the model of NCV4262, and the input end and the output end of the voltage stabilization chip are respectively provided with a first filter circuit and a second filter circuit.
The first filter circuit comprises a first low-frequency filter electrolytic capacitor, a third high-frequency filter capacitor and a fourth high-frequency filter capacitor, and the first low-frequency filter electrolytic capacitor, the third high-frequency filter capacitor and the fourth high-frequency filter capacitor are electrically connected in parallel and grounded;
the second filter circuit comprises a fifth high-frequency filter capacitor, a sixth high-frequency filter capacitor and a second low-frequency filter electrolytic capacitor, and the fifth high-frequency filter capacitor, the sixth high-frequency filter capacitor and the second low-frequency filter electrolytic capacitor are electrically connected in parallel;
the capacitance value of the first low-frequency filtering electrolytic capacitor is 220 muF, the capacitance value of the third high-frequency filtering capacitor is 100nF, the capacitance value of the fourth high-frequency filtering capacitor is 10nF, the capacitance value of the fifth high-frequency filtering capacitor is 100nF, the capacitance value of the sixth high-frequency filtering capacitor is 10nF, and the capacitance value of the second low-frequency filtering electrolytic capacitor is 22 muF.
Furthermore, the motor driving power supply module further comprises a power supply management control chip which is respectively and electrically connected with the motor driving power supply module and the control circuit power supply module.
Furthermore, the ground wire of the motor driving power supply module and the ground wire of the control circuit power supply module are isolated from each other and do not contact each other.
Further, the normal working output direct current voltage value of the power supply module is 9-16V, the normal working current of the power supply module is 10-30A, and the static direct current value output by the power supply module in the ECU control mainboard sleep state is less than 200 muA.
The invention has the beneficial effects that:
the power supply module of the invention divides two paths of power supplies to the motor driving power module and the control circuit power module, thereby realizing the hierarchical control management of the power supplies, having high power supply efficiency and prolonging the cruising ability of the automobile;
the front ends of the motor driving power supply module and the control circuit power supply module are respectively provided with a motor driving power supply reverse polarity protection module and a control circuit reverse polarity protection module, wherein the driving power supply reverse polarity protection module is internally provided with a field effect transistor with the model of IPD70P04P4-09, a plurality of high-frequency filter capacitors and a divider resistor, so that the forward input conduction of the driving power supply is realized, the current and the voltage are stably input, the high-frequency wave capacity is enhanced, meanwhile, the control circuit reverse polarity protection module is provided with a diode and a bidirectional diode, the fluctuation of the control power supply is resisted, the enough overload capacity is ensured when each control module operates, the reliability of equipment is improved, and the operation efficiency is high;
the rear ends of the motor driving power supply module and the control circuit power supply module are respectively provided with a motor driving power supply voltage stabilization detection module and a control circuit voltage stabilization filtering module, wherein the motor driving power supply voltage stabilization detection module selects a large-capacity capacitor for energy storage and low-frequency filtering, can stabilize the current and voltage of the operation of each working motor, resists the fluctuation and impact brought by a power supply, and simultaneously ensures enough load and overload capacity when the driving motor operates, the rear end of the motor driving power supply voltage stabilization detection module is provided with a high-frequency filtering capacitor to realize secondary high-frequency filtering of the motor driving power supply and further stabilize the current and voltage of the motor operation, the control circuit voltage stabilization filtering module comprises a control power supply detection module and a control power supply output module, the control power supply output module is provided with a voltage stabilization chip with the model number of NCV4262, and the input of the voltage stabilization chip, The output end of the power supply is respectively provided with a first filter circuit and a second filter circuit, the first filter circuit comprises a first low-frequency filter electrolytic capacitor, a third high-frequency filter capacitor and a fourth high-frequency filter capacitor, and the first low-frequency filter electrolytic capacitor, the third high-frequency filter capacitor and the fourth high-frequency filter capacitor are electrically connected in parallel and grounded to realize high-frequency and low-frequency filtering of the power supply input end; the second filter circuit comprises a fifth high-frequency filter capacitor, a sixth high-frequency filter capacitor and a second low-frequency filter electrolytic capacitor, the fifth high-frequency filter capacitor, the sixth high-frequency filter capacitor and the second low-frequency filter electrolytic capacitor are electrically connected in parallel, so that high and low frequencies are further suppressed, the filtering effect is realized, and finally, the stable output of current and voltage is realized;
the motor driving power supply module is provided with a motor driving power supply voltage stabilization detection module, the front end of the motor driving power supply voltage stabilization detection module is respectively and electrically connected with a first bridge type motor driving module, a high-end voltage driving module and a second bridge type motor driving module, the first bridge type motor driving module is electrically connected with an electric strut motor, the high-end voltage driving module is electrically connected with a tail gate unlocking motor, and the second bridge type motor driving module is electrically connected with a tail gate self-absorption motor, so that the high current carrying capacity of the motor driving power supply module is improved, overlarge working current can be borne, and the continuous and stable work of the whole system is ensured;
and fifthly, the ground wire of the motor driving power supply module and the ground wire of the control circuit power supply module are isolated from each other and do not contact with each other, so that the anti-electromagnetic interference is strong, and the stability of current and voltage output is enhanced.
The invention has a motor driving power supply voltage stabilization detection module and a control power supply detection module, can detect and feed back the power supply condition of the driving power supply and the control power supply in real time, is convenient to troubleshoot power supply faults and provides fault information.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a control schematic of the present invention;
FIG. 2 is a circuit diagram of the present invention;
fig. 3 is a circuit diagram of a motor drive power supply module of the present invention;
FIG. 4 is a circuit diagram of the motor drive power supply reverse polarity protection module of the present invention;
FIG. 5 is a circuit diagram of a motor drive power supply regulation detection module of the present invention;
FIG. 6 is a circuit diagram of the control circuit power module of the present invention;
FIG. 7 is a circuit diagram of a reverse polarity protection module of the control circuit of the present invention;
FIG. 8 is a circuit diagram of the control power detection module of the present invention;
FIG. 9 is a circuit diagram of a control power supply output module of the present invention;
the parts in the drawings are marked as follows:
a power supply module 1, a motor driving power module 2, a motor driving power reverse polarity protection module 21, a motor driving power voltage stabilization detection module 22, a first bridge motor driving module 221, an electric strut motor 2211, a high-end voltage driving module 222, a tail gate unlocking motor 2221, a second bridge motor driving module 223, a tail gate self-priming motor 2231, a control circuit power module 3, a control circuit reverse polarity protection module 31, a control circuit voltage stabilization filter module 32, a fault detection circuit module 321, a signal pull-up circuit module 322, an external LED circuit module 323, a buzzer circuit module 324, an EEPROM circuit module 325, a high-speed CAN transceiver 326, a control power detection module 327, a control power output module 328, a power management control chip 4, a field effect transistor Q1, a first input filter capacitor C1, a second input filter capacitor C2, a first diode D1, a second diode D1, The high-frequency filter circuit comprises a first voltage-dividing resistor R1, an energy-storage filter capacitor C3, a first bidirectional diode D2, a first high-frequency filter capacitor C4, a second voltage-dividing resistor R2, a third voltage-dividing resistor R3, a bypass vibration-elimination capacitor C5, a second diode D3, a second bidirectional diode D4, a fourth voltage-dividing resistor R4, a fifth voltage-dividing resistor R5, a second high-frequency filter capacitor C6, a voltage-stabilizing chip U1, a first low-frequency filter electrolytic capacitor C7, a third high-frequency filter capacitor C8, a fourth high-frequency filter capacitor C9, a fifth high-frequency filter capacitor C10, a sixth high-frequency filter capacitor C11 and a second low-frequency filter electrolytic capacitor C12.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and the present invention will be described in detail with reference to the accompanying drawings. The invention may be embodied in other different forms, i.e. it is capable of various modifications and changes without departing from the scope of the invention as disclosed.
Example (b): an ECU power management system of an automobile electric tail gate is shown in figures 1-9 and comprises a control mainboard, a power supply module 1, a motor driving power module 2 and a control circuit power module 3, wherein the power supply module 1, the motor driving power module 2 and the control circuit power module 3 are arranged on the control mainboard, and the power supply module is respectively and electrically connected with the motor driving power module and the control circuit power module;
as shown in fig. 3, the motor driving POWER supply module includes a motor driving POWER supply reverse polarity protection module 21 and a motor driving POWER supply voltage stabilization detection module 22, the motor driving POWER supply reverse polarity protection module is disposed at the front end of the motor driving POWER supply voltage stabilization detection module, and the motor driving POWER supply reverse polarity protection module is electrically connected in series with the motor driving POWER supply voltage stabilization detection module, where POWER1 is an output end of a motor driving POWER supply, and a Drive voltage detection is a measured voltage output end of the motor driving POWER supply voltage stabilization detection module;
the control circuit power supply module comprises a control circuit reverse polarity protection module 31 and a control circuit voltage-stabilizing filter module 32, the control circuit reverse polarity protection module is arranged at the front end of the control circuit voltage-stabilizing filter module, and the control circuit reverse polarity protection module is electrically connected with the control circuit voltage-stabilizing filter module in series;
the input end of the motor driving power supply reverse polarity protection module is electrically connected with the input end of the control circuit reverse polarity protection module in parallel;
the front end of the motor driving power supply voltage stabilization detection module is electrically connected with a first bridge type motor driving module 221, a high-end voltage driving module 222 and a second bridge type motor driving module 223 respectively, the first bridge type motor driving module is electrically connected with an electric strut motor 2211, the high-end voltage driving module is electrically connected with a tail gate unlocking motor 2221, and the second bridge type motor driving module is electrically connected with a tail gate self-priming motor 2231;
the output end of the control circuit voltage-stabilizing filter module is electrically connected with the fault detection circuit module 321, the signal pull-up circuit module 322, the external LED circuit module 323, the buzzer circuit module 324, the EEPROM circuit module 325 and the high-speed CAN transceiver 326 respectively.
The motor driving power supply reverse polarity protection module comprises an input filter capacitor and a field effect transistor Q1;
the input filter capacitors comprise a first input filter capacitor C1 and a second input filter capacitor C2, the first and second input filter capacitors being electrically connected in series and grounded;
a first diode D1 is connected in parallel between the grid and the source of the field effect transistor, the grid is connected in series with a first divider resistor R1, one end of the first divider resistor is grounded, and the other end of the first divider resistor is electrically connected with the first diode;
the capacitance values of the first input filter capacitor and the second input filter capacitor are both 100nF, the resistance value of the first voltage dividing resistor is 2.2k omega, the type of the field effect transistor is IPD70P04P4-09, the field effect transistor is triggered and conducted by an external power supply, and the voltage value of the external power supply is 9V-16V.
The motor driving power supply voltage stabilization detection module comprises an energy storage filter capacitor C3, a first bidirectional diode D2, a first high-frequency filter capacitor C4, a second voltage division resistor R2 and a third voltage division resistor R3;
the energy storage filter capacitor is electrically connected with a first bidirectional diode in parallel and is grounded, the first high-frequency filter capacitor is electrically connected with a third voltage dividing resistor in parallel and is grounded, and the second voltage dividing resistor is connected in series between the parallel connection end of the energy storage filter capacitor and the first bidirectional diode and the parallel connection end of the first high-frequency filter capacitor and the third voltage dividing resistor;
the capacitance value of the energy storage filter capacitor is 1000 muF, the capacitance value of the first high-frequency filter capacitor is 10nF, the resistance value of the second divider resistor is 1M omega, and the resistance value of the third divider resistor is 200k omega.
The control circuit reverse polarity protection module comprises a bypass vibration elimination capacitor C5, a second diode D3 and a second bidirectional diode D4;
one end of the bypass vibration-damping capacitor is electrically connected with the anode of the second diode in parallel, the other end of the bypass vibration-damping capacitor is grounded, one end of the second bidirectional diode is electrically connected with the cathode of the second diode, and the other end of the second bidirectional diode is grounded;
the capacitance value of the bypass vibration elimination capacitor is 100 nF.
As shown in fig. 6, the Control circuit voltage stabilizing filter module includes a Control power supply detection module 327 and a Control power supply output module 328, the Control power supply detection module is electrically connected to the Control power supply output module in parallel, wherein VBAT is a Control circuit power supply, and Control voltage detection is a measured voltage output end of the Control power supply detection module;
the control power supply detection module comprises a fourth voltage-dividing resistor R4, a fifth voltage-dividing resistor R5 and a second high-frequency filter capacitor C6, wherein the fifth voltage-dividing resistor and the second high-frequency filter capacitor are electrically connected in parallel, and the parallel end of the fifth voltage-dividing resistor and the parallel end of the second high-frequency filter capacitor are electrically connected with the fourth voltage-dividing resistor;
the control power supply output module comprises a voltage stabilizing chip U1 with the model number of NCV4262, and the input end and the output end of the voltage stabilizing chip are respectively provided with a first filter circuit and a second filter circuit.
The first filter circuit comprises a first low-frequency filter electrolytic capacitor C7, a third high-frequency filter capacitor C8 and a fourth high-frequency filter capacitor C9, and the first low-frequency filter electrolytic capacitor, the third high-frequency filter capacitor and the fourth high-frequency filter capacitor are electrically connected in parallel and grounded;
the second filter circuit comprises a fifth high-frequency filter capacitor C10, a sixth high-frequency filter capacitor C11 and a second low-frequency filter electrolytic capacitor C12, and the fifth high-frequency filter capacitor, the sixth high-frequency filter capacitor and the second low-frequency filter electrolytic capacitor are electrically connected in parallel;
the capacitance value of the first low-frequency filtering electrolytic capacitor is 220 muF, the capacitance value of the third high-frequency filtering capacitor is 100nF, the capacitance value of the fourth high-frequency filtering capacitor is 10nF, the capacitance value of the fifth high-frequency filtering capacitor is 100nF, the capacitance value of the sixth high-frequency filtering capacitor is 10nF, and the capacitance value of the second low-frequency filtering electrolytic capacitor is 22 muF.
The motor driving power supply control circuit further comprises a power supply management control chip 4, and the power supply management control chip is electrically connected with the motor driving power supply module and the control circuit power supply module respectively.
And the ground wire of the motor driving power supply module and the ground wire of the control circuit power supply module are isolated from each other and are not in contact with each other.
The normal work output direct current voltage value of the power supply module is 9V-16V, the normal work current of the power supply module is 10A-30A, and the static direct current value output by the power supply module in the ECU control mainboard dormant state is less than 200 muA.
The working process and working principle of the invention are as follows:
the power supply module of the invention is divided into two paths of power supplies to the motor driving power supply module and the control circuit power supply module, thereby realizing the hierarchical control management of the power supplies, having high power supply efficiency and prolonging the cruising ability of the automobile; the front ends of the motor driving power supply module and the control circuit power supply module are respectively provided with a motor driving power supply reverse polarity protection module and a control circuit reverse polarity protection module, wherein the driving power supply reverse polarity protection module is internally provided with a field effect transistor with the model number of IPD70P04P4-09, a plurality of high-frequency filter capacitors and a divider resistor, so that the forward input conduction of the driving power supply is realized, the current and the voltage are stably input, the high-frequency wave capacity is enhanced, meanwhile, the control circuit reverse polarity protection module is provided with a diode and a bidirectional diode, the fluctuation of the control power supply is resisted, the enough overload capacity is ensured when each control module operates, the reliability of equipment is improved, and the operation efficiency is high; the invention discloses a motor driving power supply module and a control circuit power supply module, wherein the rear ends of the motor driving power supply module and the control circuit power supply module are respectively provided with a motor driving power supply voltage stabilization detection module and a control circuit voltage stabilization filtering module, wherein the motor driving power supply voltage stabilization detection module selects a high-capacity capacitor for energy storage and low-frequency filtering, can stabilize the current and voltage of the operation of each working motor, resists the fluctuation and impact brought by a power supply, and simultaneously ensures the sufficient load and overload capacity when the driving motor operates, the rear end of the motor driving power supply voltage stabilization detection module is provided with a high-frequency filtering capacitor for realizing the secondary high-frequency filtering of the motor driving power supply and further stabilizing the current and voltage of the motor operation, the control circuit voltage stabilization filtering module comprises a control power supply detection module and a control power supply output module, the control power supply output module is provided with a voltage stabilization chip with the model number of NCV4262, and the, the first filter circuit comprises a first low-frequency filter electrolytic capacitor, a third high-frequency filter capacitor and a fourth high-frequency filter capacitor, and the first low-frequency filter electrolytic capacitor, the third high-frequency filter capacitor and the fourth high-frequency filter capacitor are electrically connected in parallel and grounded to realize high-frequency and low-frequency filtering of the power input end; the second filter circuit comprises a fifth high-frequency filter capacitor, a sixth high-frequency filter capacitor and a second low-frequency filter electrolytic capacitor, the fifth high-frequency filter capacitor, the sixth high-frequency filter capacitor and the second low-frequency filter electrolytic capacitor are electrically connected in parallel, so that high and low frequencies are further suppressed, the filtering effect is realized, and finally, the stable output of current and voltage is realized; the motor driving power supply module is provided with a motor driving power supply voltage stabilization detection module, the output end of the motor driving power supply voltage stabilization detection module is respectively and electrically connected with a first bridge type motor driving module, a high-end voltage driving module and a second bridge type motor driving module, the first bridge type motor driving module is electrically connected with an electric strut motor, the high-end voltage driving module is electrically connected with a tail gate unlocking motor, and the second bridge type motor driving module is electrically connected with a tail gate self-absorption motor, so that the high current carrying capacity of the motor driving power supply module is improved, excessive working current can be borne, and the continuous and stable work of the whole system is ensured; the ground wire of the motor driving power supply module and the ground wire of the control circuit power supply module are isolated from each other and do not contact with each other, the anti-electromagnetic interference is strong, and the stability of current and voltage output is enhanced.
The power supply module on the control main board is divided into two paths to respectively provide 30A direct current and 10A direct current for the motor driving power supply module and the control circuit power supply module, the 30A direct current passes through the motor driving power supply reverse polarity protection module and the motor driving power supply voltage stabilization detection module, the input end and the output end of the motor driving power supply are subjected to reverse polarity protection and high-frequency and low-frequency filtering treatment, a stable power supply is conveyed to the electric strut motor, the tail gate unlocking motor and the tail gate self-absorption motor, 10A direct current passes through the control circuit reverse polarity protection module and the control circuit voltage-stabilizing filtering module, the input end and the output end of the control power supply are subjected to energy storage filtering and harmonic suppression, and the control power supply CAN be effectively and stably supplied to the fault detection circuit module, the signal pull-up circuit module, the external LED circuit module, the buzzer circuit module, the EEPROM circuit module and the high-speed CAN transceiver.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the specification and the drawings, or other related technical fields, are encompassed by the present invention.
Claims (5)
1. The utility model provides an electronic tail-gate ECU power management system of car which characterized in that: the control system comprises a control mainboard, and a power supply module (1), a motor driving power module (2) and a control circuit power module (3) which are arranged on the control mainboard, wherein the power supply module is respectively and electrically connected with the motor driving power module and the control circuit power module;
the motor driving power supply module comprises a motor driving power supply reverse polarity protection module (21) and a motor driving power supply voltage stabilization detection module (22), the motor driving power supply reverse polarity protection module is arranged at the front end of the motor driving power supply voltage stabilization detection module, and the motor driving power supply reverse polarity protection module is electrically connected with the motor driving power supply voltage stabilization detection module in series;
the control circuit power supply module comprises a control circuit reverse polarity protection module (31) and a control circuit voltage stabilization filtering module (32), the control circuit reverse polarity protection module is arranged at the front end of the control circuit voltage stabilization filtering module, and the control circuit reverse polarity protection module is electrically connected with the control circuit voltage stabilization filtering module in series;
the input end of the motor driving power supply reverse polarity protection module is electrically connected with the input end of the control circuit reverse polarity protection module in parallel;
the front end of the motor driving power supply voltage stabilization detection module is respectively and electrically connected with a first bridge type motor driving module (221), a high-end voltage driving module (222) and a second bridge type motor driving module (223), the first bridge type motor driving module is electrically connected with an electric strut motor (2211), the high-end voltage driving module is electrically connected with a tail gate unlocking motor (2221), and the second bridge type motor driving module is electrically connected with a tail gate self-priming motor (2231);
the output end of the control circuit voltage-stabilizing filtering module is respectively and electrically connected with a fault detection circuit module (321), a signal pull-up circuit module (322), an external LED circuit module (323), a buzzer circuit module (324), an EEPROM circuit module (325) and a high-speed CAN transceiver (326);
the motor driving power supply reverse polarity protection module comprises an input filter capacitor and a field effect transistor (Q1);
the input filter capacitance comprises a first input filter capacitance (C1) and a second input filter capacitance (C2), the first and second input filter capacitances being electrically connected in series and grounded;
a first diode (D1) is connected in parallel between the grid and the source of the field effect transistor, the grid is connected in series with a first divider resistor (R1), one end of the first divider resistor is grounded, and the other end of the first divider resistor is electrically connected with the first diode;
the capacitance values of the first input filter capacitor and the second input filter capacitor are both 100nF, the resistance value of the first voltage dividing resistor is 2.2k omega, the type of the field effect transistor is IPD70P04P4-09, the field effect transistor is triggered and conducted by an external power supply, and the voltage value of the external power supply is 9-16V;
the motor driving power supply voltage stabilization detection module comprises an energy storage filter capacitor (C3), a first bidirectional diode (D2), a first high-frequency filter capacitor (C4), a second voltage division resistor (R2) and a third voltage division resistor (R3);
the energy storage filter capacitor is electrically connected with a first bidirectional diode in parallel and is grounded, the first high-frequency filter capacitor is electrically connected with a third voltage dividing resistor in parallel and is grounded, and the second voltage dividing resistor is connected in series between the parallel connection end of the energy storage filter capacitor and the first bidirectional diode and the parallel connection end of the first high-frequency filter capacitor and the third voltage dividing resistor;
the capacitance value of the energy storage filter capacitor is 1000 muF, the capacitance value of the first high-frequency filter capacitor is 10nF, the resistance value of the second divider resistor is 1M omega, and the resistance value of the third divider resistor is 200k omega;
the control circuit reverse polarity protection module comprises a bypass vibration elimination capacitor (C5), a second diode (D3) and a second bidirectional diode (D4);
one end of the bypass vibration-damping capacitor is electrically connected with the anode of the second diode in parallel, the other end of the bypass vibration-damping capacitor is grounded, one end of the second bidirectional diode is electrically connected with the cathode of the second diode, and the other end of the second bidirectional diode is grounded;
the capacitance value of the bypass vibration-damping capacitor is 100 nF;
the control circuit voltage stabilization filtering module comprises a control power supply detection module (327) and a control power supply output module (328), and the control power supply detection module is electrically connected with the control power supply output module in parallel;
the control power supply detection module comprises a fourth voltage-dividing resistor (R4), a fifth voltage-dividing resistor (R5) and a second high-frequency filter capacitor (C6), wherein the fifth voltage-dividing resistor and the second high-frequency filter capacitor are electrically connected in parallel, and the parallel end of the fifth voltage-dividing resistor and the parallel end of the second high-frequency filter capacitor are electrically connected with the fourth voltage-dividing resistor;
the control power supply output module comprises a voltage stabilizing chip (U1) with the model number of NCV4262, and the input end and the output end of the voltage stabilizing chip are respectively provided with a first filter circuit and a second filter circuit.
2. The ECU power management system for the electric tailgate of the automobile according to claim 1, characterized in that: the first filter circuit comprises a first low-frequency filter electrolytic capacitor (C7), a third high-frequency filter capacitor (C8) and a fourth high-frequency filter capacitor (C9), and the first low-frequency filter electrolytic capacitor, the third high-frequency filter capacitor and the fourth high-frequency filter capacitor are electrically connected in parallel and grounded;
the second filter circuit comprises a fifth high-frequency filter capacitor (C10), a sixth high-frequency filter capacitor (C11) and a second low-frequency filter electrolytic capacitor (C12), and the fifth high-frequency filter capacitor, the sixth high-frequency filter capacitor and the second low-frequency filter electrolytic capacitor are electrically connected in parallel;
the capacitance value of the first low-frequency filtering electrolytic capacitor is 220 muF, the capacitance value of the third high-frequency filtering capacitor is 100nF, the capacitance value of the fourth high-frequency filtering capacitor is 10nF, the capacitance value of the fifth high-frequency filtering capacitor is 100nF, the capacitance value of the sixth high-frequency filtering capacitor is 10nF, and the capacitance value of the second low-frequency filtering electrolytic capacitor is 22 muF.
3. The ECU power management system for the electric tailgate of the automobile according to claim 1, characterized in that: the motor driving power supply control circuit is characterized by further comprising a power supply management control chip (4), wherein the power supply management control chip is electrically connected with the motor driving power supply module and the control circuit power supply module respectively.
4. The ECU power management system for the electric tailgate of the automobile according to claim 1, characterized in that: and the ground wire of the motor driving power supply module and the ground wire of the control circuit power supply module are isolated from each other and are not in contact with each other.
5. The ECU power management system for the electric tailgate of the automobile according to claim 1, characterized in that: the normal work output direct current voltage value of the power supply module is 9V-16V, the normal work current of the power supply module is 10A-30A, and the static direct current value output by the power supply module in the ECU control mainboard dormant state is less than 200 muA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810114290.0A CN108275091B (en) | 2018-02-05 | 2018-02-05 | ECU power supply management system of automobile electric tail door |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810114290.0A CN108275091B (en) | 2018-02-05 | 2018-02-05 | ECU power supply management system of automobile electric tail door |
Publications (2)
| Publication Number | Publication Date |
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| CN108275091A CN108275091A (en) | 2018-07-13 |
| CN108275091B true CN108275091B (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810114290.0A Active CN108275091B (en) | 2018-02-05 | 2018-02-05 | ECU power supply management system of automobile electric tail door |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3089635B1 (en) * | 2018-12-06 | 2021-05-07 | Nexter Electronics | Device for protecting a service circuit, and device for measuring a current in an electrical circuit implementing such a protection device |
| CN112009402B (en) * | 2020-08-31 | 2021-12-17 | 湖南行必达网联科技有限公司 | Power supply device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2905992Y (en) * | 2006-04-13 | 2007-05-30 | 北京经纬恒润科技有限公司 | Circuit system for controlling electric vehicle door |
| CN201896528U (en) * | 2010-11-19 | 2011-07-13 | 宁波信泰机械有限公司 | Electric control device for automobile electric tail gate |
| US9694769B2 (en) * | 2013-06-21 | 2017-07-04 | GM Global Technology Operations LLC | Smart power distribution unit |
| CN106476732A (en) * | 2016-12-08 | 2017-03-08 | 重庆互兴科技有限公司 | A kind of power supply circuits powered for drive recorder |
| CN107394864A (en) * | 2017-08-29 | 2017-11-24 | 邢建强 | A kind of accumulator of electric car charging and discharging state monitoring system |
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