CN113904529A - New energy vehicle power control circuit and device - Google Patents
New energy vehicle power control circuit and device Download PDFInfo
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- CN113904529A CN113904529A CN202111288685.0A CN202111288685A CN113904529A CN 113904529 A CN113904529 A CN 113904529A CN 202111288685 A CN202111288685 A CN 202111288685A CN 113904529 A CN113904529 A CN 113904529A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention discloses a new energy vehicle power supply control circuit and device. The circuit includes: the low-voltage power supply of the new energy vehicle is connected with the filter, and the filter filters a power supply signal of the low-voltage power supply; the filter is connected with the first isolation power supply, the second isolation power supply and the third isolation power supply, wherein the first isolation power supply is connected with a driving chip of the new energy vehicle to supply power to the driving chip, and the driving chip controls a motor of the new energy vehicle to rotate or stop rotating through on-off control so as to drive the new energy vehicle to move; the second isolation power supply and the third isolation power supply are connected with the electronic equipment of the new energy vehicle except the driving chip to supply power to the electronic equipment. The invention solves the technical problem that electromagnetic interference noise signals can be coupled into a low-voltage control system to interfere the normal work of a self circuit.
Description
Technical Field
The invention relates to the technical field of automotive electronics, in particular to a power supply control circuit and device for a new energy vehicle.
Background
In the prior art, a new energy automobile integrated controller comprises a low-voltage control system and a high-voltage system. The low-voltage control system provides control signals for the high-voltage system to enable the IGBT to be switched on and off successively, and the vehicle-mounted power battery provides electric energy for the motor through the switching-on and switching-off of the IGBT to drive the vehicle. But at the same time, the high-frequency voltage component and the high-frequency current component with higher amplitude and steeper rising edge are generated, so as to generate electromagnetic interference noise signals. Electromagnetic interference noise signals can be coupled into a low-voltage control system of the integrated controller to interfere normal work of a circuit of the integrated controller, and meanwhile, torque instruction sending of a VCU of the vehicle controller is interfered, so that abnormal parking of the vehicle is caused, and personal safety of personnel in the vehicle is endangered.
Disclosure of Invention
The embodiment of the invention provides a power supply control circuit and a power supply control device for a new energy vehicle, which at least solve the technical problem that electromagnetic interference noise signals are coupled into a low-voltage control system to interfere the normal work of a circuit of the new energy vehicle.
According to an aspect of the embodiment of the invention, a new energy vehicle power supply control circuit is provided, which includes: the low-voltage power supply of the new energy vehicle is connected with a filter, and the filter filters a power supply signal of the low-voltage power supply; the filter is connected with a first isolation power supply, a second isolation power supply and a third isolation power supply, wherein the first isolation power supply is connected with a driving chip of the new energy vehicle to supply power to the driving chip, and the driving chip controls a motor of the new energy vehicle to rotate or stop rotating through on-off control so as to drive the new energy vehicle to move; the second isolation power supply and the third isolation power supply are connected with the electronic equipment of the new energy vehicle except the driving chip and supply power to the electronic equipment.
According to another aspect of the embodiments of the present invention, there is provided a new energy vehicle power supply control apparatus, including: the filter is connected with a low-voltage power supply of the new energy vehicle and used for filtering a power supply signal of the low-voltage power supply; the filter is connected with the first isolation power supply, the second isolation power supply and the third isolation power supply, the first isolation power supply is connected with a driving chip of the new energy vehicle to supply power to the driving chip, and the driving chip controls a motor of the new energy vehicle to rotate or stop rotating through on-off control so as to drive the new energy vehicle to move; the second isolation power supply and the third isolation power supply are connected with the electronic equipment of the new energy vehicle except the driving chip and supply power to the electronic equipment.
As an alternative example, the apparatus includes: the first filter circuit is used for filtering common-mode interference of input signals of a rotary transformer in a motor of the new energy vehicle; a second filter circuit for filtering common mode interference and differential mode interference of S1 and S3 at an output terminal of the resolver; a third filter circuit for filtering common mode interference and differential mode interference of S2 and S4 at the output terminal of the rotary transformer.
In the embodiment of the invention, the circuit comprises a low-voltage power supply of a new energy vehicle, a filter and a power supply control circuit, wherein the filter is used for filtering a power supply signal of the low-voltage power supply; the filter is connected with a first isolation power supply, a second isolation power supply and a third isolation power supply, wherein the first isolation power supply is connected with a driving chip of the new energy vehicle to supply power to the driving chip, and the driving chip controls a motor of the new energy vehicle to rotate or stop rotating through on-off control so as to drive the new energy vehicle to move; the second isolation power supply and the third isolation power supply are connected with the electronic equipment of the new energy vehicle except the driving chip and supply power to the electronic equipment. Through the circuit, because in the method, the low-voltage power supply is connected with the filter, the filter is connected with the first isolation power supply, the second isolation power supply and the third isolation power supply, and the first isolation power supply is connected with the driving chip of the new energy vehicle, when the low-voltage power supply supplies power to the driving chip, the power can be filtered through the filter, and the low-voltage power supply is isolated through the isolation power supply, so that interference coupling is prevented from entering a low-voltage control system, the low-voltage power supply is prevented from interfering the normal work of the circuit of the low-voltage power supply, and the safety of the new energy vehicle is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a power distribution diagram of an alternative power distribution method for a new energy vehicle according to an embodiment of the invention;
fig. 2 is an IGBT driving circuit diagram of an alternative new energy vehicle power distribution method according to an embodiment of the present invention;
fig. 3 is an EMI filter circuit diagram of an alternative new energy vehicle power distribution method according to an embodiment of the invention;
fig. 4 is a second filter circuit diagram of an alternative new energy vehicle power distribution method according to an embodiment of the invention;
fig. 5 is a third filter circuit diagram of an alternative new energy vehicle power distribution method according to an embodiment of the invention;
fig. 6 is a first filter circuit diagram of an alternative new energy vehicle power distribution method according to an embodiment of the invention;
fig. 7 is a schematic structural diagram of an alternative new energy vehicle power distribution device according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, system, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, apparatus, article, or device.
According to a first aspect of the embodiments of the present invention, there is provided a new energy vehicle power supply control circuit, optionally, the circuit includes:
the low-voltage power supply of the new energy vehicle is connected with the filter, and the filter filters a power supply signal of the low-voltage power supply;
the filter is connected with the first isolation power supply, the second isolation power supply and the third isolation power supply, wherein the first isolation power supply is connected with a driving chip of the new energy vehicle to supply power to the driving chip, and the driving chip controls a motor of the new energy vehicle to rotate or stop rotating through on-off control so as to drive the new energy vehicle to move;
the second isolation power supply and the third isolation power supply are connected with the electronic equipment of the new energy vehicle except the driving chip to supply power to the electronic equipment.
In this embodiment, when the low-voltage power supply of the new energy vehicle supplies power, the low-voltage power supply is filtered by the filter to obtain a filtered low-voltage power supply, then the filtered low-voltage power supply is output as 3 paths of power supplies, the first isolation power supply can supply power for the driving chip, and the motor is controlled to rotate or stop rotating by controlling the on-off of the driving chip so as to drive the new energy vehicle to move. And the second isolated power supply and the third isolated power supply can supply power for other electronic equipment on the vehicle, such as an instrument panel, an ignition device, a rechargeable battery and the like, and the specific power distribution mode is shown in fig. 1. After a low-voltage power supply (12V battery) of the logistics vehicle integrated controller supplies power to the integrated controller, common mode interference and differential mode interference are filtered through an EMI filter, and the low-voltage power supply is distributed to an isolation power supply 1, an isolation power supply 2 and an isolation power supply 3 after being filtered. The isolation power supply 1 outputs 4 paths of power supplies (generally 23V) for supplying power to the auxiliary side of the isolation driving chip of the IGBT, wherein 3 paths of power supplies respectively supply power to 3 upper bridge IGBT driving chips, and the rest 1 path of power supplies supply power to 3 lower bridge IGBT driving chips, so that the on-off of the IGBT is controlled to drive a motor to rotate, the isolation of the IGBT driving circuit and a weak current control system is realized, and the interference is reduced. The isolation power supply 2 outputs 2 paths of power supplies, the 1 path of power supply (generally 15V) is used for supplying power to the rotary transformer circuit, and the rotary transformer circuit is connected with a rotary transformer in the motor after filtering, so that the interference of the rotary transformer on the main control circuit is reduced. The rest 1 way power supply (generally 12V) respectively supplies power to the isolation power supply 4, the isolation power supply 5 and the isolation power supply 6. The isolation power supply 4 (generally 5V) is used for supplying power to the PWM level conversion circuit, the three-phase current sampling circuit, the bus voltage sampling circuit, and the temperature sampling circuit on the one hand, and is used for supplying power to the isolation power supply 9 on the other hand. The isolation power supply 9 (generally 5V) is used for supplying power to the CAN1 communication circuit, the CAN1 communication circuit is used for communicating with the VCU of the whole vehicle controller, and the CAN communication adopts an isolation scheme. An isolated power supply 5 (typically 3.3V) and an isolated power supply 6 (typically 1.9V) are used to power the DSP1 host chip. An isolated power supply 3 (typically 12V) is used to power both isolated power supply 7 and isolated power supply 8. The isolated power supply 7 (typically 5V) is used to supply power to the isolated power supply 10 on the one hand and to supply power to the relay control circuit and the adhesion detection circuit on the other hand. The isolated power supply 10 (typically 5V) is used to power the CAN2 communication circuit and the CAN2 communication circuit is used to communicate with the vehicle control unit VCU. An isolated power supply 8 (typically 3.3V) is used to power the DSP2 master control chip.
Optionally, in this embodiment, the IGBT switching signal is used as an interference source, and switching on and off of the IGBT generates a voltage high-frequency component and a current high-frequency component with higher amplitude and steeper rising edge at two ends of the IGBT, so as to generate an electromagnetic interference noise signal. Therefore, the high-voltage driving signal and the low-voltage driving signal of the IGBT can be isolated, and the interference to a low-voltage system is reduced.
The specific isolation mode in this embodiment is a mode in which the isolation driving chip and the isolation power supply are matched with each other, and because the magnitude I of the interference signal is in direct proportion to the voltage change rate dv/dt at the two ends of the IGBT and the inter-electrode capacitance C of the driving chip, the isolation power supply in this embodiment adopts a flyback power supply, and the driving chip selects a device with a small inter-electrode capacitance between the primary side and the secondary side and a large CMTI. The specific circuit is shown in fig. 2. The 12V input isolation power supply supplies power to the isolation driving chip, and the isolation driving chip converts the low-voltage driving signal into a high-voltage driving signal. Rsns is a current sensing resistor.
Optionally, IN this embodiment, the isolation power supply has a significant effect IN filtering interference generated by an IGBT switching signal, but a switching frequency of a MOS transistor IN the isolation power supply circuit is 350khz, and a certain amount of electromagnetic interference noise may also be generated, where as shown IN fig. 3, a 12V _ IN input power supply is connected to a 12V battery power supply, a capacitor C3 is connected to the rear of the power supply, a common mode inductor L1 is connected to the rear of the capacitor C3, differential mode inductors L2 and L3 are connected to the rear of the common mode inductor L1, a capacitor C4 is connected between the common mode inductor L1 and the differential mode inductors L2 and L3, capacitors C6 and C8 are connected to the common mode inductor L1 and the differential mode inductor L2, and capacitors C7 and C9 are connected to the common mode inductor L1 and the differential mode inductor L3. A capacitor C5 is connected behind the differential mode inductors L2 and L3. The differential mode inductor L2, the differential mode inductor L3, the capacitor C4 and the leakage inductor in the common mode inductor L1, and the capacitor C3 are used for filtering differential mode interference; the common mode inductor L1, the capacitors C6 and C7, the differential mode inductors L2 and L3 and the capacitors C8 and C9 are used for filtering out common mode noise. The large inductance L and the small capacitance C usually cause the unstable work of the isolation power supply at the resonance frequency point, and the electrolytic capacitor C3 is added to damp the resonance circuit by utilizing the ESR characteristic thereof so as to eliminate the influence of resonance and ensure the safety and reliability of the power supply.
Optionally, in this embodiment, since the output of the IGBT is connected to the motor, and a resolver is disposed in the motor, interference of the IGBT may be coupled to the resolver, and the resolver serves as a key sensor in motor control, and the detection precision of the resolver on the position angle of the motor determines the running stability of the motor, which is related to vehicle safety and personal safety. Therefore, the present embodiment employs a filter circuit at the interface circuit of the resolver to filter out the interference signal. As shown in fig. 4, the resolver output signals S1 and S2 are filtered to remove pulse interference through a Transient Voltage Super (TVS) D2, and then filtered to remove common mode interference through an inductor L4, a capacitor C10 and a capacitor C11, resistors R1 and R2, and a capacitor C12 are filtered to remove differential mode interference, and diodes D3, D4, D5 and D6 clamp the input signal, so that the level of the input signal is within the input range of the sampling module, and the sampling module is protected from being damaged. The filtered S1_ DSP and S3_ DSP are connected to the sampling module. As shown in fig. 5, the resolver output signals S2 and S4 are filtered by the TVS tube D3 to remove the pulse interference, and then are filtered by the inductor L5, the capacitors C13 and C14 to remove the common mode interference, the resistors R3 and R4 and the capacitor C15 to remove the differential mode interference, and the diodes D7, D8, D9 and D10 clamp the input signal, so that the level of the input signal is within the input range of the sampling module, and the sampling module is protected from being damaged. The filtered S1_ DSP and S3_ DSP are connected to the sampling module.
As shown in fig. 6, the resolver input signals E1 and E2 pass through the inductor L5 and the capacitors C16 and C17 to filter out common mode interference. S1 and S3 are resolver SIN interface circuits, S2 and S4 are resolver COS interface circuits, and E1 and E2 are resolver excitation interface circuits.
According to the method, when the low-voltage power supply is used for supplying power to the driving chip, the low-voltage power supply is filtered by the filter, then is divided into the isolation power supplies, and the isolation power supplies are used for supplying power to the driving chip, so that interference coupling is prevented from entering a low-voltage control system, electromagnetic interference is reduced, and the safety of the new energy vehicle is improved.
As an alternative example, the filter is an EMI filter for filtering out common mode interference and differential mode interference of the low voltage power supply.
Optionally, in this embodiment, the low-voltage power supply may be divided into 3 power supplies after being filtered by the filter. The filter filtering may be to filter out common mode interference and differential mode interference in the low voltage power supply. When common mode interference and differential mode interference are filtered, an EMI filter can be used, the EMI filter is a low-pass filter, power of a direct current power supply, a power supply with the frequency of 50Hz or 400Hz can be transmitted to equipment without attenuation, EMI signals transmitted by the power supply are greatly attenuated, EMI signals generated by the equipment are effectively controlled, and the EMI filters are used for filtering electromagnetic interference noise generated by an isolation power supply, wherein the common mode interference is filtered by using a common mode inductor and a capacitor, and the common mode interference is filtered by using a differential mode inductor and a capacitor. The inductor and the capacitor usually cause unstable work of the isolation power supply at a resonant frequency point, so that the influence of resonance can be eliminated by adding the electrolytic capacitor and utilizing the ESR characteristic damping resonant circuit of the electrolytic capacitor, and the safety and the reliability of the power supply are ensured. And filtering common mode interference and differential mode interference of the low-voltage power supply by the EMI filter to obtain the filtered low-voltage power supply.
As an optional example, the circuit further includes:
the output of the first isolation power supply is four paths of sub power supplies;
a first sub power supply, a second sub power supply and a third sub power supply in the four paths of sub power supplies respectively supply power for 1 upper bridge driving chip of the driving chip;
and a fourth sub-power supply in the four-path sub-power supply supplies power to 3 lower bridge driving chips of the driving chip.
Optionally, in this embodiment, the first isolation power supply may be 23V, and output four power supplies, where three power supplies respectively supply power to 3 upper bridge IGBT driver chips, and the remaining one power supply supplies power to 3 lower bridge IGBT driver chips, and is used to control the switching of the IGBTs to drive the motor to rotate or stop, so as to implement isolation between the IGBT driver circuit and the weak current control system, reduce electromagnetic interference, and improve performance of the control system.
As an optional example, the circuit further includes:
the output of the second isolation power supply is four paths of sub power supplies;
a fifth sub-power supply in the four sub-power supplies power for a rotary transformer decoding circuit, and the rotary transformer decoding circuit is connected with a rotary transformer in the motor;
a sixth sub-power supply in the four sub-power supplies power for a PWM level conversion circuit, a three-phase current sampling circuit, a bus voltage sampling circuit, a temperature sampling circuit and a CAN1 communication circuit of the new energy vehicle, wherein the CAN1 communication circuit is used for communicating with a VCU (virtual control unit) of the new energy vehicle;
and a seventh sub power supply and an eighth sub power supply in the four paths of sub power supplies supply power for the DSP1 main control chip of the new energy vehicle.
Optionally, in this embodiment, the second isolation power supply outputs four paths of power supplies, wherein a fifth sub power supply of one path of sub power supply supplies power to the resolver decoding circuit, and is connected to a resolver in the motor after filtering, so as to reduce electromagnetic interference generated by the resolver to the main control circuit. The voltage of the sixth sub-power supply of one sub-power supply CAN be 15V, on one hand, the sixth sub-power supply supplies power for the PWM level conversion circuit, the three-phase current sampling circuit, the bus voltage sampling circuit and the temperature sampling circuit, on the other hand, the sixth sub-power supply supplies power for the CAN1 communication circuit, and the CAN1 communication circuit is used for communicating with a VCU (virtual vehicle controller) of the new energy vehicle. The voltage of the seventh sub-power supply of one path of sub-power supply can be 3.3V, the voltage of the eighth sub-power supply can be 1.9V, and the seventh sub-power supply and the eighth sub-power supply simultaneously supply power to the DSP1 main control chip.
As an optional example, the circuit further includes:
the sixth sub-power supply in the four sub-power supplies power for the PWM level conversion circuit, the three-phase current sampling circuit, the bus voltage sampling circuit, the temperature sampling circuit and the CAN1 communication circuit of the new energy vehicle, and comprises: the sixth sub-power supply supplies power to a fourth isolation power supply, one path of power output by the fourth isolation power supply supplies power to a PWM level conversion circuit, a three-phase current sampling circuit, a bus voltage sampling circuit and a temperature sampling circuit, the other path of power output by the fourth isolation power supply supplies power to a ninth isolation power supply, and the ninth isolation power supply supplies power to a CAN1 communication circuit;
the seventh sub-power supply and the eighth sub-power supply in the four-path sub-power supply power for the DSP1 main control chip of the new energy vehicle include: the seventh sub-power supply supplies power to the fifth isolation power supply, the fifth isolation power supply supplies power to the DSP1 main control chip, the eighth sub-power supply supplies power to the sixth isolation power supply, and the sixth isolation power supply supplies power to the DSP1 main control chip.
The voltage of the sixth sub-power supply CAN be 15V, and the sixth sub-power supply supplies power to the PWM level conversion circuit, the three-phase current sampling circuit, the bus voltage sampling circuit and the temperature sampling circuit on the one hand, and supplies power to the fifth isolation power supply on the other hand, wherein the fifth isolation power supply is used for supplying power to the CAN1 communication circuit, and the CAN1 communication circuit is used for communicating with a VCU (virtual vehicle controller) of the new energy vehicle. The voltage of the seventh sub-power supply of one path of sub-power supply can be 3.3V, the voltage of the eighth sub-power supply can be 1.9V, and the seventh sub-power supply and the eighth sub-power supply simultaneously supply power to the DSP1 main control chip.
As an optional example, the circuit further includes:
outputting the third isolated power supply into two paths of sub-power supplies;
a ninth sub-power supply in the two sub-power supplies power for the CAN2 communication circuit, the relay control circuit and the adhesion detection circuit, wherein the CAN2 communication circuit is used for communicating with a controller VCU of the new energy vehicle;
and the tenth sub-power supply in the two sub-power supplies power for the DSP2 main control chip of the new energy vehicle.
Optionally, in this embodiment, the third isolated power supply outputs 2 power supplies, which are a ninth sub-power supply and a tenth sub-power supply respectively, where the ninth sub-power supply may have a voltage of 5V, and supplies power to the relay control circuit and the adhesion detection circuit on the one hand, and supplies power to the CAN2 communication circuit on the other hand, and the CAN2 communication circuit is used for communicating with the controller VCU of the new energy vehicle. And a tenth power supply with voltage of 3.3V supplies power to the DSP2 main control chip of the new energy vehicle.
As an optional example, the circuit further includes:
the ninth sub power supply in the two sub power supplies is CAN2 communication circuit, relay control circuit and adhesion detection circuit power supply includes: the ninth sub-power supply supplies power to a seventh isolation power supply, one path of power output by the seventh isolation power supply supplies power to a tenth isolation power supply, the tenth isolation power supply supplies power to a CAN2 communication circuit, and the other path of power output by the seventh isolation power supply supplies power to a relay control circuit and an adhesion detection circuit;
the tenth sub-power supply in two sub-power supplies power for the DSP2 main control chip of the new energy vehicle includes: the tenth sub-power supply supplies power to the eighth isolation power supply, and the eighth isolation power supply supplies power to the main control chip of the DSP 2.
Optionally, in this embodiment, the third isolated power supply outputs 2 power supplies, which are a ninth sub-power supply and a tenth sub-power supply respectively, where the ninth sub-power supply may have a voltage of 5V, and supplies power to the relay control circuit and the adhesion detection circuit on the one hand, and supplies power to the tenth isolated power supply on the other hand, where the tenth isolated power supply supplies power to the CAN2 communication circuit, and the CAN2 communication circuit is used for communicating with the controller VCU of the new energy vehicle. And a tenth power supply with voltage of 3.3V supplies power to the DSP2 main control chip of the new energy vehicle.
As an optional example, the circuit further includes:
the input end of a rotary transformer in a motor of the new energy vehicle is connected with a first filter circuit, and the first filter circuit is used for filtering common-mode interference of an input signal of the rotary transformer;
s1 and S3 at the output end of the rotary transformer are connected with a second filter circuit, the second filter circuit is used for filtering common mode interference and differential mode interference of S1 and S3, and the second filter circuit is connected with the sampling module;
and S2 and S4 at the output end of the rotary transformer are connected with a third filter circuit, the third filter circuit is used for filtering common mode interference and differential mode interference of S2 and S4, and the third filter circuit is connected with the sampling module.
Optionally, in this embodiment, the resolver decoding circuit is connected to an interface circuit of the resolver, an output signal of the resolver is subjected to pulse interference filtering by the TVS tube, common mode interference filtering by the inductor and the capacitor, differential mode interference filtering by the resistor and the capacitor, clamping by the diode, and finally inputting a level of the output signal to the interface circuit of the sampling module within an input range of the sampling module, so as to protect the sampling module.
It should be noted that, for simplicity of description, the above-mentioned embodiments of the apparatus are described as a series of acts or combinations, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
According to another aspect of the embodiments of the present application, there is also provided a new energy vehicle power distribution device, as shown in fig. 7, including:
the filter 702 is connected with the low-voltage power supply of the new energy vehicle and is used for filtering a power supply signal of the low-voltage power supply;
the system comprises a first isolation power supply 704, a second isolation power supply 706 and a third isolation power supply 708, wherein a filter is connected with the first isolation power supply, the second isolation power supply and the third isolation power supply, the first isolation power supply is connected with a driving chip of the new energy vehicle to supply power to the driving chip, and the driving chip controls the motor of the new energy vehicle to rotate or stop rotating through on-off control so as to drive the new energy vehicle to move;
the second isolation power supply and the third isolation power supply are connected with the electronic equipment of the new energy vehicle except the driving chip to supply power to the electronic equipment.
Optionally, in this embodiment, when the low-voltage power supply of the new energy vehicle supplies power, the low-voltage power supply is filtered by passing through a filter to obtain a filtered low-voltage power supply, then the filtered low-voltage power supply is divided into 3 paths of power supplies, the first isolation power supply may supply power to the driving chip, and the motor is controlled to rotate or stop rotating by controlling on/off of the driving chip to drive the new energy vehicle to move. And the second isolated power supply and the third isolated power supply can supply power for other electronic equipment on the vehicle, such as an instrument panel, an ignition device, a rechargeable battery and the like, and the specific power distribution mode is shown in fig. 2.
As an alternative example, the apparatus includes:
the first filter circuit is used for filtering common-mode interference of input signals of a rotary transformer in a motor of the new energy vehicle;
the second filter circuit is used for filtering common mode interference and differential mode interference of S1 and S3 at the output end of the rotary transformer;
and the third filter circuit is used for filtering common mode interference and differential mode interference of S2 and S4 at the output end of the rotary transformer.
Optionally, in this embodiment, the resolver decoding circuit is connected to an interface circuit of the resolver, an output signal of the resolver filters pulse interference through the TVS tube, common mode interference is filtered through the inductor and the capacitor, differential mode interference is filtered through the resistor and the capacitor, and finally, a level of the output signal is input to the interface circuit of the sampling module within an input range of the sampling module through diode clamping, so as to protect the sampling module.
For other examples of this embodiment, please refer to the above examples, which are not described herein.
Alternatively, in this embodiment, a person skilled in the art may understand that all or part of the steps in the various apparatuses in the foregoing embodiments may be implemented by a program instructing hardware related to the terminal device, where the program may be stored in a computer-readable storage medium, and the storage medium may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The integrated unit in the above embodiments, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in the above computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including instructions for causing one or more computer devices (which may be personal computers, servers, network devices, or the like) to execute all or part of the steps of the apparatus according to the embodiments of the present invention.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of a logic function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a new forms of energy car power control circuit which characterized in that includes:
the low-voltage power supply of the new energy vehicle is connected with a filter, and the filter filters a power supply signal of the low-voltage power supply;
the filter is connected with a first isolation power supply, a second isolation power supply and a third isolation power supply, wherein the first isolation power supply is connected with a driving chip of the new energy vehicle and supplies power to the driving chip, and the driving chip controls a motor of the new energy vehicle to rotate or stop rotating through on-off control so as to drive the new energy vehicle to move;
the second isolation power supply and the third isolation power supply are connected with electronic equipment of the new energy vehicle except the driving chip and supply power to the electronic equipment.
2. The circuit of claim 1, wherein the filter is an EMI filter configured to filter out common mode interference and differential mode interference of the low voltage power supply.
3. The circuit of claim 1, further comprising:
the first isolation power supply output is a four-path sub power supply;
a first sub power supply, a second sub power supply and a third sub power supply in the four paths of sub power supplies respectively supply power for 1 upper bridge driving chip of the driving chip;
and a fourth sub power supply in the four paths of sub power supplies power for 3 lower bridge driving chips of the driving chips.
4. The circuit of claim 1, further comprising:
the output of the second isolation power supply is four paths of sub power supplies;
a fifth sub-power supply in the four sub-power supplies power for a rotary transformer decoding circuit, and the rotary transformer decoding circuit is connected with a rotary transformer in the motor;
a sixth sub-power supply in the four sub-power supplies power for a PWM level conversion circuit, a three-phase current sampling circuit, a bus voltage sampling circuit, a temperature sampling circuit and a CAN1 communication circuit of the new energy vehicle, wherein the CAN1 communication circuit is used for communicating with a controller VCU of the new energy vehicle;
and a seventh sub power supply and an eighth sub power supply in the four paths of sub power supplies supply power for the DSP1 main control chip of the new energy vehicle.
5. The circuit of claim 4,
the sixth sub-power supply in the four sub-power supplies power for the PWM level conversion circuit, the three-phase current sampling circuit, the bus voltage sampling circuit, the temperature sampling circuit and the CAN1 communication circuit of the new energy vehicle, and comprises the following steps: the sixth sub-power supply supplies power to a fourth isolation power supply, one path of power supply output by the fourth isolation power supply supplies power to the PWM level conversion circuit, the three-phase current sampling circuit, the bus voltage sampling circuit and the temperature sampling circuit, the other path of power supply output by the fourth isolation power supply supplies power to a ninth isolation power supply, and the ninth isolation power supply supplies power to the CAN1 communication circuit;
the seventh sub-power supply and the eighth sub-power supply in the four paths of sub-power supplies supply power for the DSP1 main control chip of the new energy vehicle, and the method comprises the following steps: the seventh sub-power supply supplies power to a fifth isolation power supply, the fifth isolation power supply supplies power to the DSP1 main control chip, the eighth sub-power supply supplies power to a sixth isolation power supply, and the sixth isolation power supply supplies power to the DSP1 main control chip.
6. The circuit of claim 1, further comprising:
the output of the third isolation power supply is two paths of sub power supplies;
a ninth sub-power supply in the two sub-power supplies power for a CAN2 communication circuit, a relay control circuit and an adhesion detection circuit, wherein the CAN2 communication circuit is used for communicating with a VCU (virtual vehicle control unit) of the new energy vehicle;
and the tenth sub-power supply in the two sub-power supplies power for the DSP2 main control chip of the new energy vehicle.
7. The circuit of claim 6,
the ninth sub power supply in the two sub power supplies is CAN2 communication circuit, relay control circuit and adhesion detection circuit power supply includes: the ninth sub-power supply supplies power to a seventh isolation power supply, one path of power output by the seventh isolation power supply supplies power to a tenth isolation power supply, the tenth isolation power supply supplies power to the CAN2 communication circuit, and the seventh isolation power supply outputs the other path of power to supply power to the relay control circuit and the adhesion detection circuit;
the tenth sub-power supply in the two sub-power supplies power for the DSP2 main control chip of the new energy vehicle comprises: the tenth sub-power supply supplies power to an eighth isolation power supply, and the eighth isolation power supply supplies power to the DSP2 main control chip.
8. The circuit of any one of claims 1 to 7, further comprising:
the input end of a rotary transformer in a motor of the new energy vehicle is connected with a first filter circuit, and the first filter circuit is used for filtering common-mode interference of an input signal of the rotary transformer;
s1 and S3 at the output end of the rotary transformer are connected with a second filter circuit, the second filter circuit is used for filtering common mode interference and differential mode interference of the S1 and the S3, and the second filter circuit is connected with a sampling module;
and S2 and S4 at the output end of the rotary transformer are connected with a third filter circuit, the third filter circuit is used for filtering common mode interference and differential mode interference of the S2 and the S4, and the third filter circuit is connected with the sampling module.
9. The utility model provides a new energy automobile power control device which characterized in that includes:
the filter is connected with a low-voltage power supply of the new energy vehicle and used for filtering a power supply signal of the low-voltage power supply;
the filter is connected with the first isolation power supply, the second isolation power supply and the third isolation power supply, the first isolation power supply is connected with a driving chip of the new energy vehicle to supply power to the driving chip, and the driving chip controls a motor of the new energy vehicle to rotate or stop rotating through on-off control so as to drive the new energy vehicle to move;
the second isolation power supply and the third isolation power supply are connected with electronic equipment of the new energy vehicle except the driving chip and supply power to the electronic equipment.
10. The apparatus of claim 9, comprising:
the first filter circuit is used for filtering common-mode interference of input signals of a rotary transformer in a motor of the new energy vehicle;
a second filter circuit for filtering common mode interference and differential mode interference of S1 and S3 at an output terminal of the rotary transformer;
a third filter circuit for filtering common mode interference and differential mode interference of S2 and S4 at an output of the rotary transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111288685.0A CN113904529B (en) | 2021-11-02 | 2021-11-02 | New energy vehicle power supply control circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111288685.0A CN113904529B (en) | 2021-11-02 | 2021-11-02 | New energy vehicle power supply control circuit and device |
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| CN113904529A true CN113904529A (en) | 2022-01-07 |
| CN113904529B CN113904529B (en) | 2023-10-10 |
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| CN1684350A (en) * | 2004-04-12 | 2005-10-19 | 台达电子工业股份有限公司 | Time delay control scheme for a power supply with multiple outputs |
| CN101521460A (en) * | 2009-04-10 | 2009-09-02 | 华中科技大学 | Multi-channel output direct current-direct-current converter |
| CN101674025A (en) * | 2009-10-12 | 2010-03-17 | 佛山市柏克电力设备有限公司 | Multiplexed output auxiliary switch power source powered by commercial power and battery |
| US20140035530A1 (en) * | 2011-04-18 | 2014-02-06 | Zehua Shao | Electric automobile pwm rectification and converting voltage/current pulse charging system |
| CN209938336U (en) * | 2019-02-28 | 2020-01-14 | 方华 | Device for regenerative braking, auxiliary inversion and train power supply of rail transit |
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2021
- 2021-11-02 CN CN202111288685.0A patent/CN113904529B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1684350A (en) * | 2004-04-12 | 2005-10-19 | 台达电子工业股份有限公司 | Time delay control scheme for a power supply with multiple outputs |
| CN101521460A (en) * | 2009-04-10 | 2009-09-02 | 华中科技大学 | Multi-channel output direct current-direct-current converter |
| CN101674025A (en) * | 2009-10-12 | 2010-03-17 | 佛山市柏克电力设备有限公司 | Multiplexed output auxiliary switch power source powered by commercial power and battery |
| US20140035530A1 (en) * | 2011-04-18 | 2014-02-06 | Zehua Shao | Electric automobile pwm rectification and converting voltage/current pulse charging system |
| CN209938336U (en) * | 2019-02-28 | 2020-01-14 | 方华 | Device for regenerative braking, auxiliary inversion and train power supply of rail transit |
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| Publication number | Publication date |
|---|---|
| CN113904529B (en) | 2023-10-10 |
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