CN114142452A - Power supply circuit and vehicle - Google Patents

Power supply circuit and vehicle Download PDF

Info

Publication number
CN114142452A
CN114142452A CN202111350166.2A CN202111350166A CN114142452A CN 114142452 A CN114142452 A CN 114142452A CN 202111350166 A CN202111350166 A CN 202111350166A CN 114142452 A CN114142452 A CN 114142452A
Authority
CN
China
Prior art keywords
circuit
filter
power supply
filter circuit
energy storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111350166.2A
Other languages
Chinese (zh)
Inventor
李丰军
周剑光
王坚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Automotive Innovation Corp
Original Assignee
China Automotive Innovation Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Automotive Innovation Corp filed Critical China Automotive Innovation Corp
Priority to CN202111350166.2A priority Critical patent/CN114142452A/en
Publication of CN114142452A publication Critical patent/CN114142452A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
    • H02H11/003—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/02—Arrangements for reducing harmonics or ripples
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0138—Electrical filters or coupling circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0153—Electrical filters; Controlling thereof
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/06—Arrangements of circuit components or wiring on supporting structure on insulating boards, e.g. wiring harnesses

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Filters And Equalizers (AREA)

Abstract

The application discloses supply circuit and vehicle, this supply circuit includes: the power supply, the reverse connection preventing circuit, the first filter circuit, the second filter circuit and the filter inductor are connected in series; the power supply is respectively connected with the reverse connection preventing circuit, the first filter circuit and the second filter circuit in series; the first filter circuit and the second filter circuit are used for filtering high-frequency interference signals in the power supply circuit; the first filter circuit is electrically connected with the input end of the filter inductor, and the second filter circuit is electrically connected with the output end of the filter inductor; the first filter circuit and the second filter circuit are connected in parallel; the first filter circuit and the second filter circuit respectively comprise at least two ceramic chip capacitors connected in series, and the at least two ceramic chip capacitors connected in series are perpendicular to each other and arranged on the circuit board. The power supply circuit short circuit that this application can effectively avoid causing because stress action, and the high frequency interference signal in the filtering power supply circuit improves power supply circuit's reliability and stability.

Description

Power supply circuit and vehicle
Technical Field
The application relates to the technical field of vehicle cabin power supply circuits, in particular to a power supply circuit and a vehicle.
Background
Along with the progress of the times, the vehicle passenger cabin has the ceramic chip electric capacity to carry out high frequency filtering at power input end, because the characteristics of ceramic chip electric capacity laminated structure itself, use the width direction as the X axle, length direction is the Y axle, after there is relevant stress when the circuit board along the Y axle direction, cause the inside lamellar structure's of ceramic chip electric capacity fracture or rupture very easily, cause the inefficacy, and the mode that the electric capacity became invalid is the short circuit generally, can cause the power short circuit to burn out like this, and have a direction and receive stress deformation relatively easily, and once can only receive the stress of a direction, its stress source: 1) such as the pressure caused by the PCB mounting, causing the board to deform slightly; 2) and the main connector wire harness is used for applying stress caused by vibration to the PCB in the running process of the vehicle and the like.
Therefore, a power supply circuit is urgently needed to solve the problems that the ceramic chip capacitor in the power supply circuit fails due to unidirectional stress.
Disclosure of Invention
In order to solve the problems in the prior art, the embodiment of the present application provides a technical solution for a power supply circuit and a vehicle, which is used for solving the problems of failure and the like caused by unidirectional stress on a ceramic capacitor in the power supply circuit, and the technical solution is as follows:
on one hand, the power supply circuit comprises a power supply, an anti-reverse connection circuit, a first filter circuit, a second filter circuit and a filter inductor;
the power supply is connected in series with the reverse connection preventing circuit, the first filter circuit and the second filter circuit respectively; the first filter circuit and the second filter circuit are used for filtering high-frequency interference signals in the power supply circuit;
the first filter circuit is electrically connected with the input end of the filter inductor, and the second filter circuit is electrically connected with the output end of the filter inductor; the first filter circuit and the second filter circuit are connected in parallel;
the first filter circuit and the second filter circuit respectively comprise at least two ceramic chip capacitors connected in series, and the at least two ceramic chip capacitors connected in series are perpendicular to each other and arranged on the circuit board.
Further, the at least two ceramic chip capacitors connected in series comprise a first ceramic chip capacitor and a second ceramic chip capacitor, the length direction of the ceramic chips in the first ceramic chip capacitor is arranged along the length direction of the circuit board, and the length direction of the ceramic chips in the second ceramic chip capacitor is arranged along the width direction of the circuit board.
Furthermore, the first filter circuit and the second filter circuit respectively comprise at least two filter branches connected in parallel, and a single filter branch comprises at least two ceramic chip capacitors connected in series and having the same capacitance.
Further, the capacitance of the ceramic chip capacitor on different filter branches of the at least two parallel-connected filter branches is different.
Further, the power supply circuit further comprises a tank circuit, and the power supply is connected with the tank circuit in series; the energy storage circuit is connected with the second filter circuit in parallel.
Furthermore, the energy storage circuit comprises a diode, a first energy storage capacitor and a second energy storage capacitor, wherein the anode of the diode is electrically connected with the first energy storage capacitor, and the cathode of the diode is electrically connected with the second energy storage capacitor; the first energy storage capacitor and the second energy storage capacitor are connected in parallel.
Further, the capacitance of the first energy storage capacitor is larger than that of the second energy storage capacitor.
Furthermore, the power supply circuit further comprises a first power supply end and a second power supply end, and the first power supply end is electrically connected with the first energy storage capacitor; the second power supply end is electrically connected with the second energy storage capacitor.
Further, the reverse connection preventing circuit comprises a first metal oxide semiconductor field effect transistor and a second metal oxide semiconductor field effect transistor, a D pole of the first metal oxide semiconductor field effect transistor is coupled with the power supply, an S pole of the first metal oxide semiconductor field effect transistor is coupled with an S pole of the second metal oxide semiconductor field effect transistor, and a D pole of the second metal oxide semiconductor field effect transistor is electrically connected with the first filter circuit.
In another aspect, a vehicle for implementing the above-described power supply circuit is provided.
The application provides a supply circuit and vehicle has following technological effect:
according to the embodiment of the application, the anti-reverse connection circuit, the first filter circuit, the second filter circuit and the filter inductor are arranged, the power supply is respectively connected with the anti-reverse connection circuit, the first filter circuit and the second filter circuit in series, the anti-reverse connection circuit is used for preventing the power supply from being reversely connected to cause that a power domain controller and a vehicle body fuse are burnt, and the first filter circuit and the second filter circuit are used for filtering high-frequency interference signals in the power supply circuit; the first filter circuit is electrically connected with the input end of the filter inductor, and the second filter circuit is electrically connected with the output end of the filter inductor; the first filter circuit and the second filter circuit are connected in parallel, and the filter circuit and the filter inductor form a filter circuit for inhibiting the interference of abnormal waveforms on the power supply circuit; the first filter circuit and the second filter circuit respectively comprise at least two ceramic chip capacitors connected in series, the at least two ceramic chip capacitors connected in series are arranged on the circuit board in a mutually perpendicular mode, the ceramic chip capacitors are arranged on the circuit board in a mutually perpendicular mode and used for eliminating unidirectional stress applied by the bearing plate, and therefore the short circuit of the power supply circuit caused by stress action can be effectively avoided, and the reliability and the stability of the power supply circuit are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply circuit according to an embodiment of the present disclosure;
wherein the reference numerals in the figures correspond to: 1-anti-reverse connection circuit; 1 a-a first mosfet; 1 b-a second mosfet; 1 c-an antistatic tube; 1 d-a third resistance; 1 e-a second resistance; 1 f-a first resistance; 2-a first filter circuit; 3-a second filter circuit; 4-a tank circuit; 5-a power supply; 6-a filter inductance; 4 a-a diode; 4 b-a first energy storage capacitor; 4 c-a second energy storage capacitor; 7 a-a first supply terminal; 7 b-a second supply terminal; 8 a-a first filtering branch; 8 b-a second filtering branch; 8 c-a third filtering branch; 2a, 2b, 2c, 2d, 2e, 2f, 3a, 3b, 3c, 3d, 3e and 3f are all tile capacitances.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
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, method, system, article, or apparatus 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, method, article, or apparatus.
Please refer to fig. 1, which is a schematic structural diagram of a power supply circuit according to an embodiment of the present application, and the following describes in detail a technical solution of the present application with reference to fig. 1.
The embodiment of the application provides a power supply circuit, which specifically comprises a power supply 5, an anti-reverse connection circuit 1, a first filter circuit 2, a second filter circuit 3 and a filter inductor 6;
the power supply 5 is respectively connected with the reverse connection preventing circuit 1, the first filter circuit 2 and the second filter circuit 3 in series; the first filter circuit 2 and the second filter circuit 3 are used for filtering high-frequency interference signals in the power supply circuit; the first filter circuit 2 is electrically connected with the input end of the filter inductor 6, and the second filter circuit 3 is electrically connected with the output end of the filter inductor 6; the first filter circuit 2 and the second filter circuit 3 are connected in parallel; the first filter circuit 2 and the second filter circuit 3 respectively comprise at least two ceramic chip capacitors connected in series, and the at least two ceramic chip capacitors connected in series are perpendicular to each other and arranged on the circuit board.
In the embodiment of the application, as the ceramic chip capacitors are of a laminated structure and are easily stressed in a certain direction by the circuit board, and further the laminated structure in the ceramic chip capacitors is cracked or broken to cause failure of the ceramic chip capacitors, at least two ceramic chip capacitors connected in series are vertically arranged on the circuit board, when the ceramic chip capacitors are stressed in a certain direction, the ceramic chip capacitors arranged in the direction are caused to fail, short circuits are formed at the failed ceramic chip capacitors, filtering processing is carried out by using the ceramic chip capacitors which are not failed, the condition that a power supply circuit is short-circuited due to stress action can be effectively avoided, and the reliability and the stability of the power supply circuit are improved.
It should be noted that, in the power supply circuit, the circuit board has and only has one direction to be easily subjected to stress, so that the ceramic chip capacitors are arranged perpendicular to each other, and it can be ensured that normal filtering and power supply of the power supply circuit are not affected after the corresponding ceramic chip capacitors are subjected to stress failure along one direction and only one direction.
In an alternative embodiment, the at least two series connected tile capacitors include a first tile capacitor and a second tile capacitor, wherein the length direction of the tiles in the first tile capacitor is arranged along the length direction of the circuit board, and the length direction of the tiles in the second tile capacitor is arranged along the width direction of the circuit board.
In the embodiment of the present application, with reference to fig. 1, in order to ensure that the tile capacitors can eliminate the high frequency interference signals in the power supply circuit, the length direction of the tiles in the first tile capacitor is set along the length direction of the circuit board, and the length direction of the tiles in the second tile capacitor is set along the width direction of the circuit board, so that the first tile capacitor and the second tile capacitor are perpendicular to each other.
In one embodiment, the first tile capacitors are arranged in series with the second tile capacitors, the first tile capacitors are arranged perpendicular to the second tile capacitors, the width direction of the tile capacitors is taken as the X-axis, the length direction of the tile capacitors is taken as the Y-axis, and when the circuit board has a relevant stress along the Y-axis, the second tile capacitors are stressed such that the second tile capacitors fail and form a short circuit at the second tile capacitors, wherein the first tile capacitors and the second tile capacitors are interchangeable for distinguishing the tile capacitors only.
It should be noted that, in the embodiment of the present application, the number of the first ceramic chip capacitor and the second ceramic chip capacitor is 1 for example, and the number of the first ceramic chip capacitor and the second ceramic chip capacitor may also be 2, 3, or 4, and the like, which is not specifically limited herein.
In an alternative embodiment, the first filter circuit 2 and the second filter circuit 3 each comprise at least two parallel-connected filter branches, and a single filter branch comprises at least two series-connected ceramic chip capacitors of the same capacitance.
In an alternative embodiment, the capacitance of the ceramic chip capacitors on different filter branches of the at least two parallel-connected filter branches is different.
In the embodiment of the application, a single filtering branch comprises at least two ceramic capacitors which are connected in series and have the same capacitance, so that the aim of ensuring that the filtered high-frequency interference signals are high-frequency interference signals with the same frequency no matter stress exists in the direction along the X axis or the direction along the Y axis is achieved; the capacitance of the ceramic chip capacitors on different filter branches of the at least two parallel-connected filter branches is different, so as to ensure that the filtered high-frequency interference signal is a high-frequency interference signal within a preset range.
In a specific embodiment, taking the first filter circuit 2 as an example, the first filter circuit 2 includes a first filter branch 8a, a second filter branch 8b and a third filter branch 8c arranged in parallel, the capacitance of the tile capacitor in the first filter branch 8a can be set to 1nF, 2nF, 3nF, etc., the capacitance of the tile capacitor in the second filter branch 8b can be set to 47pF, 48pF, 49pF, etc., the capacitance of the tile capacitor in the third filter branch 8c can be set to 220nF, 221nF, 223nF, etc., where the capacitance of the tile capacitors in the different filter branches is not specifically limited, it should be noted that the tile capacitors in the first filter branch 8a and the third filter branch 8c are compared with the tile capacitors in the second filter branch 8b, and the high frequency interference signals filtered by the capacitors in the first filter branch 8a and the third filter branch 8c are compared with the high frequency interference signals filtered by the capacitors in the second filter branch 8b The high-frequency interference signal filtered by the chip capacitor has high frequency, so that the high-frequency interference signal filtered by the chip capacitor can be ensured to be the high-frequency interference signal within a preset range.
It should be noted that the first filter circuit 2 and the second filter circuit 3 may further include a fourth filter branch, a fifth filter branch, a sixth filter branch, and the like, which may be specifically configured according to actual situations, and are not specifically defined herein.
In an alternative embodiment, the power supply circuit further comprises a tank circuit 4, and the power supply 5 is connected in series with the tank circuit 4; the tank circuit 4 is connected in parallel with the second filter circuit 3.
In an alternative embodiment, the energy storage circuit 4 includes a diode 4a, a first energy storage capacitor 4b and a second energy storage capacitor 4c, an anode of the diode 4a is electrically connected to the first energy storage capacitor 4b, and a cathode of the diode 4a is electrically connected to the second energy storage capacitor 4 c; the first energy storage capacitor 4b and the second energy storage capacitor 4c are connected in parallel.
In the embodiment of the application, the energy storage circuit 4, the first filter circuit 2 and the filter inductor 6 form a filter circuit, so that high-frequency interference signals in the power supply circuit can be effectively filtered, and the interference of abnormal waveforms on the power supply circuit can be suppressed, so that power is supplied to a cabin conveniently, transient power compensation is performed on a power amplifier such as an audio power amplifier in the cabin, and the reliability and stability of the power supply circuit are improved.
The diode 4a is used for preventing the first energy storage capacitor 4b and the second energy storage capacitor 4c from supplying power reversely, and plays a role in protecting the power supply circuit.
In an alternative embodiment, the first energy storage capacitor 4b has a larger capacitance than the second energy storage capacitor 4 c.
In this embodiment, the first energy storage capacitor 4b is used to supply power to a power amplifier with a large power demand in the cabin, and the second energy storage capacitor 4c is used to supply power to a system on chip (soc) with a small power demand in the cabin and other components except the power amplifier, so that the capacitance of the first energy storage capacitor 4b is greater than that of the second energy storage capacitor 4 c. In a specific embodiment, the capacitance of the first energy storage capacitor 4b is 2200uF, and the capacitance of the second energy storage capacitor 4c is 470uF, it should be noted that the capacitances of the first energy storage capacitor 4b and the second energy storage capacitor 4c may be other values, which are not listed here.
In an alternative embodiment, the power supply circuit further includes a first power supply terminal 7a and a second power supply terminal 7b, and the first power supply terminal 7a is electrically connected to the first energy storage capacitor 4 b; the second power supply terminal 7b is electrically connected to the second energy storage capacitor 4 c.
In this embodiment of the application, the first power supply terminal 7a is electrically connected with a power amplifier with a large electric quantity demand in the cabin, so that the first energy storage capacitor 4b supplies power to the power amplifier with a large electric quantity demand in the cabin through the first power supply terminal 7a, the second power supply terminal 7b is electrically connected with a system-on-chip (soc) with a small electric quantity demand in the cabin and other components except for the power amplifier, and the second energy storage capacitor 4c supplies power to the system-on-chip (soc) with a small electric quantity demand in the cabin and other components except for the power amplifier through the second power supply terminal 7 b.
In an alternative embodiment, the anti-reverse connection circuit 1 includes a first mosfet 1a and a second mosfet 1b, a D-pole of the first mosfet 1a is coupled to the power source 5, an S-pole of the first mosfet 1a is coupled to an S-pole of the second mosfet 1b, and a D-pole of the second mosfet 1b is electrically connected to the first filter circuit 2, wherein a G-pole of the first mosfet 1a and a G-pole of the second mosfet 1b are grounded to form a closed loop.
In the embodiment of the application, the reverse connection preventing circuit 1 is used for preventing the reverse connection of the power supply 5 from causing the burning of the domain controller of the power supply 5 and the fuse of the vehicle body, the protection of a power supply 5-domain controller and a vehicle body fuse is realized mainly through a first metal-oxide-semiconductor field effect transistor 1a and a second metal-oxide-semiconductor field effect transistor 1b, the first metal-oxide-semiconductor field effect transistor 1a and the second metal-oxide-semiconductor field effect transistor 1b are both parasitic diodes, and play a role of a switch, the arrangement of the anti-reverse connection circuit 1 is used for solving the problems that in the prior art, the input power supply of a cabin is processed, the reverse power supply is prevented by adopting the modes of a single MOS and a reverse grounding diode, when a reverse power supply is input, a diode conducts reverse current, and a cabin or an entertainment controller is protected by burning a vehicle body fuse, so that the technical problem that a power domain controller and the vehicle body fuse are easily burnt is solved.
In one embodiment, the first mosfet 1a and the second mosfet 1b are both P-channel mosfets, and are connected as shown in fig. 1, when the D-electrode of the first mosfet 1a is coupled to the positive electrode of the power source 5, the voltage of the G-electrode of the first mosfet 1a is positive due to the parasitic diode, the voltage value is the power voltage of the power source 5, the G-electrode of the first mosfet 1a is grounded, the voltage value of the G-electrode of the first mosfet 1a is zero, the voltage difference between the G-electrode of the first mosfet 1a and the S-electrode of the first mosfet 1a is nonzero, the first mosfet 1a is turned on, and the S-electrode of the second mosfet 1b is coupled to the S-electrode of the first mosfet 1a, therefore, the S pole of the second mosfet 1b is positive, the voltage value is also the power voltage of the power supply 5, the G pole of the second mosfet 1b is grounded, the voltage value of the G pole of the second mosfet 1b is zero, the voltage difference between the G pole of the second mosfet 1b and the S pole of the second mosfet 1b is non-zero, the second mosfet 1b is turned on, and the power supply circuit normally supplies power to the cabin.
When the power supply is reversely connected, the G-pole of the first mosfet 1a and the G-pole of the second mosfet 1b are respectively connected to the positive pole of the power supply 5 through the circuit where the first resistor 1f is located and the circuit where the third resistor 1d is located, and with continued reference to fig. 1, it can be seen that the S-pole of the first mosfet 1a and the S-pole of the second mosfet 1b are also connected to the positive pole through the circuit where the second resistor 1e is located, and therefore, the voltage difference between the G-pole and the S-pole in the first mosfet 1a and the voltage difference between the G-pole and the S-pole in the second mosfet 1b are both 0, so the MOS transistor cannot be turned on, and therefore, the current path after the power supply is reversely connected cannot be turned on, so that a short circuit cannot be caused, and the entire cabin circuit has good protectiveness.
Further, the anti-reverse connection circuit 1 further includes an anti-static tube 1c, a first resistor 1f, a second resistor 1e and a third resistor 1d, the first resistor 1f and the third resistor 1d are respectively disposed on the grounded circuits of the first mosfet 1a and the second mosfet 1b, the second resistor 1e is respectively connected in parallel with the first mosfet 1a and the second mosfet 1b, and the anti-static tube 1c, the first resistor 1f, the second resistor 1e and the third resistor 1d are all used for protecting the normal operation of the anti-reverse connection circuit 1 and playing a role in protecting the first mosfet 1a and the second mosfet 1 b.
According to the technical scheme of the embodiment of the application, the anti-reverse connection circuit, the first filter circuit, the second filter circuit and the filter inductor are arranged, the power supply is connected with the anti-reverse connection circuit, the first filter circuit and the second filter circuit in series respectively, the anti-reverse connection circuit is used for preventing the power supply from being reversely connected to cause the burning of the power domain controller and the fuse of the vehicle body, and the first filter circuit and the second filter circuit are used for filtering high-frequency interference signals in the power supply circuit; the first filter circuit is electrically connected with the input end of the filter inductor, and the second filter circuit is electrically connected with the output end of the filter inductor; the first filter circuit and the second filter circuit are connected in parallel, and the filter circuit and the filter inductor form a filter circuit for inhibiting the interference of abnormal waveforms on the power supply circuit; the first filter circuit and the second filter circuit respectively comprise at least two ceramic chip capacitors connected in series, the at least two ceramic chip capacitors connected in series are arranged on the circuit board in a mutually perpendicular mode, the ceramic chip capacitors are arranged on the circuit board in a mutually perpendicular mode and used for eliminating unidirectional stress applied by the bearing plate, and therefore the short circuit of the power supply circuit caused by stress action can be effectively avoided, and the reliability and the stability of the power supply circuit are improved.
The embodiment of the present application further provides a vehicle, where the vehicle is used for carrying and executing the power supply circuit, so that the vehicle in the embodiment of the present application should have the technical effect of the power supply circuit, and details are not repeated herein.
Although the present invention has been described by way of preferred embodiments, the present invention is not limited to the embodiments described herein, and various changes and modifications may be made without departing from the scope of the present invention.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A power supply circuit, comprising: the anti-reverse-connection circuit comprises a power supply (5), an anti-reverse-connection circuit (1), a first filter circuit (2), a second filter circuit (3) and a filter inductor (6);
the power supply (5) is connected in series with the reverse connection preventing circuit (1), the first filter circuit (2) and the second filter circuit (3) respectively; the first filter circuit (2) and the second filter circuit (3) are used for filtering high-frequency interference signals in the power supply circuit;
the first filter circuit (2) is electrically connected with the input end of the filter inductor (6), and the second filter circuit (3) is electrically connected with the output end of the filter inductor (6); the first filter circuit (2) and the second filter circuit (3) are connected in parallel;
the first filter circuit (2) and the second filter circuit (3) respectively comprise at least two ceramic chip capacitors connected in series, and the at least two ceramic chip capacitors connected in series are perpendicular to each other and arranged on the circuit board.
2. The power supply circuit of claim 1 wherein said at least two series connected tile capacitors comprise a first tile capacitor and a second tile capacitor, wherein the length direction of the tiles in said first tile capacitor is along the length direction of said circuit board, and wherein the length direction of the tiles in said second tile capacitor is along the width direction of said circuit board.
3. The supply circuit according to claim 2, characterized in that the first filter circuit (2) and the second filter circuit (3) each comprise at least two parallel connected filter branches, a single filter branch comprising at least two series connected tile capacitors of the same capacitance.
4. The power supply circuit according to claim 3, wherein the tile capacitors on different ones of said at least two parallel connected filter branches differ in capacitance.
5. Supply circuit according to claim 1, characterized in that it further comprises a tank circuit (4), the power supply (5) being connected in series with the tank circuit (4); the energy storage circuit (4) is connected with the second filter circuit (3) in parallel.
6. The supply circuit according to claim 5, wherein the energy storage circuit (4) comprises a diode (4a), a first energy storage capacitor (4b) and a second energy storage capacitor (4c), wherein the anode of the diode (4a) is electrically connected with the first energy storage capacitor (4b), and the cathode of the diode (4a) is electrically connected with the second energy storage capacitor (4 c); the first energy storage capacitor (4b) and the second energy storage capacitor (4c) are connected in parallel.
7. Supply circuit according to claim 6, characterized in that the capacitance of the first energy-storing capacitor (4b) is larger than the capacitance of the second energy-storing capacitor (4 c).
8. Supply circuit according to claim 7, characterized in that it further comprises a first supply terminal (7a) and a second supply terminal (7b), said first supply terminal (7a) being electrically connected to said first energy storage capacitor (4 b); the second power supply end (7b) is electrically connected with the second energy storage capacitor (4 c).
9. The power supply circuit according to claim 1, wherein the anti-reverse connection circuit (1) comprises a first metal oxide semiconductor field effect transistor (1a) and a second metal oxide semiconductor field effect transistor (1b), a D-pole of the first metal oxide semiconductor field effect transistor (1a) is coupled to the power supply (5), an S-pole of the first metal oxide semiconductor field effect transistor (1a) is coupled to an S-pole of the second metal oxide semiconductor field effect transistor (1b), and a D-pole of the second metal oxide semiconductor field effect transistor (1b) is electrically connected to the first filter circuit (2).
10. A vehicle for execution to implement a power supply circuit as claimed in any one of claims 1 to 9.
CN202111350166.2A 2021-11-15 2021-11-15 Power supply circuit and vehicle Pending CN114142452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111350166.2A CN114142452A (en) 2021-11-15 2021-11-15 Power supply circuit and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111350166.2A CN114142452A (en) 2021-11-15 2021-11-15 Power supply circuit and vehicle

Publications (1)

Publication Number Publication Date
CN114142452A true CN114142452A (en) 2022-03-04

Family

ID=80393194

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111350166.2A Pending CN114142452A (en) 2021-11-15 2021-11-15 Power supply circuit and vehicle

Country Status (1)

Country Link
CN (1) CN114142452A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106786356A (en) * 2017-01-13 2017-05-31 中国北方车辆研究所 A kind of low-voltage power-off protection control circuit
US20170339792A1 (en) * 2016-05-18 2017-11-23 Murata Manufacturing Co., Ltd. Capacitor element-mounted structure
CN109510172A (en) * 2018-11-27 2019-03-22 珂伯特机器人（天津）有限公司 A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot
CN209592958U (en) * 2019-04-12 2019-11-05 浙江沃得尔科技股份有限公司 360 degree of full-view camera power supply protection circuits
CN213027815U (en) * 2020-05-09 2021-04-20 西安因诺航空科技有限公司 Flight controller power module and flight controller
CN112689387A (en) * 2019-10-18 2021-04-20 株式会社理光 Wiring circuit board

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170339792A1 (en) * 2016-05-18 2017-11-23 Murata Manufacturing Co., Ltd. Capacitor element-mounted structure
CN106786356A (en) * 2017-01-13 2017-05-31 中国北方车辆研究所 A kind of low-voltage power-off protection control circuit
CN109510172A (en) * 2018-11-27 2019-03-22 珂伯特机器人（天津）有限公司 A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot
CN209592958U (en) * 2019-04-12 2019-11-05 浙江沃得尔科技股份有限公司 360 degree of full-view camera power supply protection circuits
CN112689387A (en) * 2019-10-18 2021-04-20 株式会社理光 Wiring circuit board
CN213027815U (en) * 2020-05-09 2021-04-20 西安因诺航空科技有限公司 Flight controller power module and flight controller

Similar Documents

Publication Publication Date Title
JP2001185442A (en) Connection structure of multiplayer capacitor and decoupling capacitor and wiring substrate
JP3337018B2 (en) Multilayer capacitors, wiring boards, decoupling circuits and high frequency circuits
US7091704B2 (en) Three-phase three-wire active power filter
US7251115B2 (en) Multilayer capacitor
US10404040B2 (en) Filter arrangement
US8243479B2 (en) On-die anti-resonance structure for integrated circuit
US11502670B2 (en) Active filter for bipolar voltage sources
JP2001148325A (en) Layered capacitor, wiring board, decoupling circuit and high-frequency circuit
CN114142452A (en) Power supply circuit and vehicle
JP3730137B2 (en) Power converter
US10348165B2 (en) Noise suppression circuit
US20220239219A1 (en) Electrical component and method for manufacturing an electronic component
US9781775B2 (en) Half bridge induction heating generator and a capacitor assembly for a half bridge induction heating generator
CN103947058A (en) Stacked gas filled surge arrester
JP4453911B2 (en) Connection structure and wiring board for multilayer capacitors and decoupling capacitors
US7292020B1 (en) Remote DC-DC converter for high current, low voltage applications
WO2023189490A1 (en) Switching power supply device provided with noise reduction function component
JPS63501839A (en) Noise removal circuit
JP2002083920A (en) Circuit board for reducing power supply voltage fluctuation
CN1805222A (en) Earthing noise suppression method
US20120314391A1 (en) Circuit board and method for making the same
CN112769371A (en) Electric control device suitable for electric power steering motor and circuit substrate thereof
US20040027736A1 (en) Electrical device comprising two supports and a connection terminal connected to a series capacitor and to a voltage limiter
JP2022072316A (en) Electric apparatus
JP2001203125A (en) Laminated capacitor, wiring board, decoupling circuit, and high-frequency circuit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination