CN113928403A - Interference filtering circuit of steering wheel and electric automobile - Google Patents
Interference filtering circuit of steering wheel and electric automobile Download PDFInfo
- Publication number
- CN113928403A CN113928403A CN202010606835.7A CN202010606835A CN113928403A CN 113928403 A CN113928403 A CN 113928403A CN 202010606835 A CN202010606835 A CN 202010606835A CN 113928403 A CN113928403 A CN 113928403A
- Authority
- CN
- China
- Prior art keywords
- steering wheel
- inductor
- filter circuit
- capacitor
- power supply
- 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
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 31
- 238000004891 communication Methods 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims description 40
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
-
- B60K35/60—
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
-
- B60K2360/782—
Abstract
The invention provides an interference filtering circuit of a steering wheel and an electric automobile, and relates to the technical field of electric automobiles. The interference filtering circuit of the steering wheel comprises: the power module, the signal acquisition port, the backlight power module and the communication module are respectively connected with the steering wheel controller; the first filter circuit is connected with the power supply module; a second filter circuit is connected between the signal acquisition port and the steering wheel controller; a third filter circuit is connected between the backlight power supply module and the steering wheel controller; the fourth filter circuit is connected with the communication module; the backlight power supply module is connected with the plurality of backlight modules. The scheme of the invention can effectively filter the electromagnetic interference of the steering wheel, inhibit the signal jump of the intelligent cabin system caused by the noise generated by different paths, and create a safe, reliable and comfortable driving environment for the driver.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to an interference filtering circuit of a steering wheel controller and an electric automobile.
Background
The automobile is an essential vehicle for daily travel of people, the steering wheel is a key part for a user to control the safety and correct running of the automobile, and when the automatic driving is not effective, the user should hold the steering wheel at any time for the safety of the automobile running. But along with the progress of science and technology, audio-visual entertainment system on the vehicle, air conditioning system function also diversify gradually, for the user can experience the convenience that intelligent passenger cabin system brought when controlling the vehicle, let the operation become safer, high-efficient simultaneously, integrated more and more control button on the steering wheel.
The structure and space of the steering wheel are limited, and in order to realize more control functions, the traditional mode of connecting mechanical key signals to the receiving end of an intelligent cabin system one by one through a plurality of hard wires cannot meet the control of functions such as navigation, voice, telephone, radio, panoramic image and the like. Although a multifunctional steering wheel Controller with CAN (Controller Area Network) communication is favored by automobile manufacturers, since a user is used to install a collecting bracket on a steering wheel, and high/low voltage components of a new energy electric automobile are numerous and wiring harness routing is complicated, especially a voltage conversion part of a high-voltage component is usually composed of a switch tube, common mode noise and differential mode noise are generated when high frequency is switched on and off. These noise signals can generate conducted interference along the low-voltage wiring harness of the whole vehicle, so that false triggering of each functional unit of the intelligent cabin system can be caused.
Based on the above analysis, there is a need for an interference filtering circuit for improving electromagnetic interference of a multifunctional steering wheel of an electric vehicle.
Disclosure of Invention
The embodiment of the invention aims to provide an interference filtering circuit of a steering wheel and an electric automobile, so that the problem of intelligent cabin system signal jump caused by electromagnetic interference in the prior art is solved.
In order to achieve the above object, an embodiment of the present invention provides an interference filtering circuit for a steering wheel, including:
a steering wheel controller;
the power module, the signal acquisition port, the backlight power module and the communication module are respectively connected with the steering wheel controller; and
the first filter circuit is connected with the power supply module;
a second filter circuit is connected between the signal acquisition port and the steering wheel controller;
a third filter circuit is connected between the backlight power supply module and the steering wheel controller;
the fourth filter circuit is connected with the communication module;
the power supply module is used for supplying power to the steering wheel controller;
the backlight power supply module is connected with a plurality of backlight modules, and the backlight modules are used for providing backlight sources for the signal acquisition ports;
and the backlight power supply module supplies power to the corresponding backlight module according to a first control instruction sent by the steering wheel controller.
Optionally, the positive input end of the power supply module is connected to the positive input end of the power supply of the external connection port through the first filter circuit; and the negative electrode input end of the power supply module is connected to the ground wire in the external connection port.
Optionally, the first filter circuit comprises:
the first inductor is connected between the positive input end of the power supply module and the positive input end of the power supply of the external connection port in series; and
and one end of the first safety capacitor is connected between the power supply positive input end of the external connection port and the first inductor, and the other end of the first safety capacitor is grounded.
Optionally, the signal acquisition port is connected to a plurality of switch groups;
the switch group is used for acquiring a control signal input by a user;
and the steering wheel controller receives the control signal acquired by the user through the signal acquisition port and generates the first control instruction or the second control instruction.
Optionally, the second filter circuit comprises:
the second inductor and the first resistor are connected between the signal acquisition port and the steering wheel controller in series;
and one end of the first capacitor is connected between the second inductor and the first resistor, and the other end of the first capacitor is grounded.
Optionally, the third filter circuit comprises:
the third inductor and the second resistor are connected between the backlight power supply module and the steering wheel controller in series;
and one end of the second capacitor is connected between the third inductor and the second resistor, and the other end of the second capacitor is grounded.
Optionally, the communication module is connected to an external connection port through the first filter circuit;
the communication module is used for receiving a second control instruction sent by the steering wheel controller and sending the second control instruction to the intelligent cabin or the whole vehicle control system through the external connection port.
Optionally, the fourth filter circuit comprises:
a first end of the fourth inductor is connected to the communication module, and a second end of the fourth inductor is connected to the external connection port;
a first pin of a second end of the fourth inductor is grounded through a third capacitor; a second pin of a second end of the fourth inductor is grounded through a fourth capacitor;
and the third resistor and the second safety capacitor are connected between the first pin and the second pin in parallel.
Optionally, the steering wheel controller is further connected to a photoelectric tube, and one end of the photoelectric tube is grounded.
The embodiment of the invention also provides an electric automobile which comprises the interference filtering circuit of the steering wheel.
The technical scheme of the invention at least has the following beneficial effects:
in the above-mentioned scheme, the interference filtering circuit of steering wheel includes: the power module, the signal acquisition port, the backlight power module and the communication module are respectively connected with the steering wheel controller; the first filter circuit is connected with the power supply module; a second filter circuit is connected between the signal acquisition port and the steering wheel controller; a third filter circuit is connected between the backlight power supply module and the steering wheel controller; the fourth filter circuit is connected with the communication module; the power supply module is used for supplying power to the steering wheel controller; the backlight power supply module is connected with a plurality of backlight modules, and the backlight modules are used for providing backlight sources for the signal acquisition ports; and the backlight power supply module supplies power to the corresponding backlight module according to a first control instruction sent by the steering wheel controller. The scheme of the invention can effectively inhibit signal jump caused by noise generated by different paths, reduce signal false triggering caused by various possible electromagnetic interference factors, and create a safe, reliable and comfortable driving environment for a driver.
Drawings
Fig. 1 is a connection diagram of an interference filtering circuit of a steering wheel according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a first filter circuit in an interference filtering circuit of a steering wheel according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a second filter circuit in the interference filtering circuit of the steering wheel according to the embodiment of the present invention;
fig. 4 is a schematic diagram of a third filter circuit in the interference filtering circuit of the steering wheel according to the embodiment of the present invention;
fig. 5 is a schematic diagram of a fourth filter circuit in the interference filtering circuit of the steering wheel according to the embodiment of the present invention;
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides an interference filtering circuit of a steering wheel and an electric automobile, aiming at the problem of signal jump of an intelligent cabin system caused by electromagnetic interference in the prior art.
As shown in fig. 1, an embodiment of the present invention provides an interference filtering circuit for a steering wheel, including:
a steering wheel controller;
the power module, the signal acquisition port, the backlight power module and the communication module are respectively connected with the steering wheel controller; and
the first filter circuit is connected with the power supply module;
a second filter circuit is connected between the signal acquisition port and the steering wheel controller;
a third filter circuit is connected between the backlight power supply module and the steering wheel controller;
the fourth filter circuit is connected with the communication module;
the power supply module is used for supplying power to the steering wheel controller;
the backlight power supply module is connected with a plurality of backlight modules, and the backlight modules are used for providing backlight sources for the signal acquisition ports;
and the backlight power supply module supplies power to the corresponding backlight module according to a first control instruction sent by the steering wheel controller.
In the embodiment of the invention, the interference filtering circuit of the steering wheel can meet the requirements that when different functions are started, the mutual interference is avoided, and different instructions do not generate false operation, so that the signal jump of an intelligent cockpit caused by common mode noise and differential mode noise generated by different paths is effectively inhibited, the signal false triggering phenomenon caused by various possible electromagnetic interference factors is reduced, a safe and reliable comfortable environment is created for users, and the driving safety is improved. Moreover, the interference filtering circuit of the steering wheel can be directly used at each signal port, so that the practicability is realized, and the purpose of mass production can be achieved.
It should be noted that, in order to satisfy the requirement that the key modules of the plurality of switch groups connected with the signal acquisition port are clearly visible in different scenes, a backlight power supply module is added to realize the distinction of different backlight colors, wherein the telephone symbol has two backlight states of green and red, and the rest of the functional keys are only in white backlight.
Specifically, the positive input end of the power supply module is connected to the positive input end of the power supply of the external connection port through the first filter circuit; and the negative electrode input end of the power supply module is connected to the ground wire in the external connection port.
Here, the positive power input end of the external connection port is a +12V input end, and the negative input end of the power module is further connected to the ground.
As shown in fig. 2, in an alternative embodiment of the present invention, the first filter circuit includes:
a first inductor L1 connected in series between the positive input terminal of the power module and the positive input terminal of the external connection port; and
and one end of the first safety capacitor Y1 is connected between the power supply positive input end of the external connection port and the first inductor L1, and the other end of the first safety capacitor Y1 is grounded.
In this embodiment, the first inductor L1 is a differential mode inductor, and the first safety capacitor Y1 is a Y capacitor. And a second inductor L2 and a second safety capacitor Y1 to the ground are added between the positive input ends of the power supply modules, so that the electromagnetic interference to the power supply on the whole vehicle is eliminated.
Specifically, the signal acquisition port is connected with a plurality of switch groups;
the switch group is used for acquiring a control signal input by a user;
and the steering wheel controller receives the control signal acquired by the user through the signal acquisition port and generates the first control instruction or the second control instruction.
In this embodiment, the signal acquisition port acquires control instructions generated by control signals of different users according to the switch group, and sends the control instructions to the steering wheel controller.
It should be further noted that the signal acquisition port is connected to a plurality of switch groups, and the intelligent cockpit system is enabled to operate all functions of navigation, voice recognition, emergency call telephone, radio, panoramic image and the like, such as opening, closing, left page turning, right page turning, up page turning, down page turning, confirmation, returning, mode switching, previous song, next song, customization, volume increasing, volume decreasing, muting and the like through different keys of the switch groups.
As shown in fig. 3, in an alternative embodiment of the present invention, the second filter circuit includes:
a second inductor L2 and a first resistor R1 connected in series between the signal acquisition port and the steering wheel controller;
a first capacitor C1, wherein one end of the first capacitor C1 is connected between the second inductor L2 and the first resistor R1, and the other end of the first capacitor C1 is grounded.
In this embodiment, the second filter circuit is a filter circuit of the signal acquisition port, and eliminates wireless interference caused by the key module and the space terminal of the switch group, wherein the second inductor L2 is a differential-mode inductor, the first capacitor C1 is a common-mode capacitor, and the first resistor R1 is a filter resistor.
As shown in fig. 4, in an alternative embodiment of the present invention, the third filter circuit includes:
a third inductor L3 and a second resistor R2 connected in series between the backlight power supply module and the steering wheel controller;
and a second capacitor C2, wherein one end of the second capacitor C2 is connected between the third inductor L3 and the second resistor R2, and the other end of the second capacitor C2 is grounded.
In this embodiment of the present invention, the third filter circuit is a T-type filter unit, and may be consistent with the circuit forming device of the second filter circuit, and respectively include a differential mode inductor, a filter resistor, and a common mode capacitor, so as to eliminate electromagnetic interference to the backlight power module.
In an optional embodiment of the present invention, the communication module is connected to an external connection port through the first filter circuit;
the communication module is used for receiving a second control instruction sent by the steering wheel controller and sending the second control instruction to the intelligent cabin or the whole vehicle control system through the external connection port.
In this embodiment, the communication module is a CAN transceiver, and the CAN transceiver is connected to a CANH output terminal (a high-level differential signal of a controller area network) and a CANL output terminal (a low-level differential signal of the controller area network) of the external connection port. And the CAN transceiver sends a second instruction which is received and generated by the steering wheel controller according to the control signal of the signal acquisition port to the CAN transceiver of the intelligent cabin or the whole vehicle control system through the CANH output end and the CANL output end.
As shown in fig. 5, in an alternative embodiment of the present invention, the fourth filter circuit includes:
a fourth inductor L4, a first end of the fourth inductor L4 being connected to the communication module, a second end of the fourth inductor L4 being connected to the external connection port;
the first pin of the second end of the fourth inductor L4 is grounded through a third capacitor C3; a second pin of a second end of the fourth inductor L4 is grounded through a fourth capacitor C4;
and the third resistor R3 and the second safety capacitor X1 are connected between the first pin and the second pin in parallel.
In this embodiment, the fourth inductor L4 is a common mode inductor, the second safety capacitor X1 is an X capacitor, and the third resistor R3 is an equivalent resistor. The fourth filter circuit is used for suppressing the common mode noise of the communication module through the fourth inductor L4; and the second safety capacitor X1 is used for weakening the differential mode noise of the communication module.
Furthermore, the steering wheel controller is also connected with a photoelectric tube, one end of the photoelectric tube is grounded, and the photoelectric tube can be used as a backlight source for providing signal indication.
The embodiment of the invention also provides an electric automobile which comprises the interference filtering circuit of the steering wheel.
In the embodiment of the invention, the electric automobile adopting the interference filtering circuit of the steering wheel has high reliability of electromagnetic compatibility, and can avoid common mode noise and differential mode noise generated when a switching tube of a voltage conversion part in high-voltage and low-voltage parts is switched on and off at high frequency, so that the low-voltage switching part is interfered by space radiation, and the intelligent cabin system signal jumps.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An interference filtering circuit for a steering wheel, comprising: a steering wheel controller;
the power module, the signal acquisition port, the backlight power module and the communication module are respectively connected with the steering wheel controller; and
the first filter circuit is connected with the power supply module;
a second filter circuit is connected between the signal acquisition port and the steering wheel controller;
a third filter circuit is connected between the backlight power supply module and the steering wheel controller;
the fourth filter circuit is connected with the communication module;
the power supply module is used for supplying power to the steering wheel controller;
the backlight power supply module is connected with a plurality of backlight modules, and the backlight modules are used for providing backlight sources for the signal acquisition ports;
and the backlight power supply module supplies power to the corresponding backlight module according to a first control instruction sent by the steering wheel controller.
2. The interference filtering circuit for the steering wheel according to claim 1, wherein the positive input terminal of the power module is connected to the positive input terminal of the power source of the external connection port through the first filter circuit; and the negative electrode input end of the power supply module is connected to the ground wire in the external connection port.
3. The interference filtering circuit for a steering wheel according to claim 2, wherein the first filter circuit comprises:
a first inductor (L1) connected in series between the positive input terminal of the power module and the positive power input terminal of the external connection port; and
and one end of the first safety capacitor (Y1) is connected between the power supply positive input end of the external connection port and the first inductor (L1), and the other end of the first safety capacitor (Y1) is grounded.
4. The interference filtering circuit for the steering wheel according to claim 1, wherein the signal acquisition port is connected to a plurality of switch sets;
the switch group is used for acquiring a control signal input by a user;
and the steering wheel controller receives the control signal acquired by the user through the signal acquisition port and generates the first control instruction or the second control instruction.
5. The interference filtering circuit for a steering wheel according to claim 1, wherein said second filter circuit comprises:
a second inductor (L2) and a first resistor (R1) connected in series between the signal acquisition port and the steering wheel controller;
a first capacitor (C1), one end of the first capacitor (C1) is connected between the second inductor (L2) and the first resistor (R1), and the other end of the first capacitor (C1) is grounded.
6. The interference filtering circuit for a steering wheel according to claim 1, wherein the third filter circuit comprises:
a third inductor (L3) and a second resistor (R2) connected in series between the backlight power supply module and the steering wheel controller;
a second capacitor (C2), one end of the second capacitor (C2) is connected between the third inductor (L3) and the second resistor (R2), and the other end of the second capacitor (C2) is grounded.
7. The interference filtering circuit for the steering wheel according to claim 1, wherein the communication module is connected to an external connection port through the first filter circuit;
the communication module is used for receiving a second control instruction sent by the steering wheel controller and sending the second control instruction to the intelligent cabin or the whole vehicle control system through the external connection port.
8. The interference filtering circuit for a steering wheel according to claim 7, wherein said fourth filter circuit comprises:
a fourth inductor (L4), a first terminal of the fourth inductor (L4) being connected to the communication module, a second terminal of the fourth inductor (L4) being connected to the external connection port;
wherein the first pin of the second terminal of the fourth inductor (L4) is grounded through a third capacitor (C3); a second pin of a second terminal of the fourth inductor (L4) is grounded through a fourth capacitor (C4);
and the third resistor (R3) and the second safety capacitor (X1) are connected between the first pin and the second pin in parallel.
9. The interference filtering circuit for the steering wheel according to claim 1, wherein the steering wheel controller is further connected to a photoelectric tube, and one end of the photoelectric tube is grounded.
10. An electric vehicle characterized by comprising the interference filtering circuit of a steering wheel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010606835.7A CN113928403A (en) | 2020-06-29 | 2020-06-29 | Interference filtering circuit of steering wheel and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010606835.7A CN113928403A (en) | 2020-06-29 | 2020-06-29 | Interference filtering circuit of steering wheel and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113928403A true CN113928403A (en) | 2022-01-14 |
Family
ID=79273061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010606835.7A Pending CN113928403A (en) | 2020-06-29 | 2020-06-29 | Interference filtering circuit of steering wheel and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113928403A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202374172U (en) * | 2011-07-22 | 2012-08-08 | 大唐移动通信设备有限公司 | Communication device based on advanced telecommunications computing architecture, and filter circuit |
| CN203267785U (en) * | 2013-01-08 | 2013-11-06 | 芜湖佳景科技有限公司 | Steering wheel gear shift device |
| CN103595242A (en) * | 2012-08-13 | 2014-02-19 | 成都思迈科技发展有限责任公司 | A power supply filter capable of suppressing overvoltage surges |
| JP2015047969A (en) * | 2013-09-02 | 2015-03-16 | 本田技研工業株式会社 | Switch system |
| CN204567742U (en) * | 2015-01-09 | 2015-08-19 | 郑州宇通客车股份有限公司 | A kind of Vehicular multifunctional bearing circle and use the vehicle of this bearing circle |
| WO2016006182A1 (en) * | 2014-07-11 | 2016-01-14 | 株式会社デンソー | Vehicle display device |
| CN209118093U (en) * | 2018-08-20 | 2019-07-16 | 四川野马汽车股份有限公司 | A kind of vehicle control unit of electric vehicle hardware control circuit |
-
2020
- 2020-06-29 CN CN202010606835.7A patent/CN113928403A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202374172U (en) * | 2011-07-22 | 2012-08-08 | 大唐移动通信设备有限公司 | Communication device based on advanced telecommunications computing architecture, and filter circuit |
| CN103595242A (en) * | 2012-08-13 | 2014-02-19 | 成都思迈科技发展有限责任公司 | A power supply filter capable of suppressing overvoltage surges |
| CN203267785U (en) * | 2013-01-08 | 2013-11-06 | 芜湖佳景科技有限公司 | Steering wheel gear shift device |
| JP2015047969A (en) * | 2013-09-02 | 2015-03-16 | 本田技研工業株式会社 | Switch system |
| WO2016006182A1 (en) * | 2014-07-11 | 2016-01-14 | 株式会社デンソー | Vehicle display device |
| CN204567742U (en) * | 2015-01-09 | 2015-08-19 | 郑州宇通客车股份有限公司 | A kind of Vehicular multifunctional bearing circle and use the vehicle of this bearing circle |
| CN209118093U (en) * | 2018-08-20 | 2019-07-16 | 四川野马汽车股份有限公司 | A kind of vehicle control unit of electric vehicle hardware control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3401152A1 (en) | Electric vehicle and electromagnetic interference suppression circuit thereof | |
| CN101649708B (en) | Anti-pinching car window controller | |
| JP2001080525A (en) | Device for transmitting electric power and information between steering wheel side and body side of self- traveling vehicle | |
| JP6047907B2 (en) | Communication apparatus and communication system | |
| US10071636B2 (en) | Control device for a multi-voltage vehicle electrical system | |
| CN113580950B (en) | Motor control system and vehicle | |
| CN113928403A (en) | Interference filtering circuit of steering wheel and electric automobile | |
| CN201477406U (en) | Keypad control decoder of automobile steering wheel | |
| CN210554260U (en) | Charging and discharging interface electrical separation circuit and vehicle-mounted charger | |
| CN209692398U (en) | A kind of vehicle-mounted camera power supply system based on coaxial cable | |
| CN218888539U (en) | Anti-interference electric motor car CAN communication circuit | |
| US20130130671A1 (en) | Audio system for a motor vehicle | |
| CN215734966U (en) | Atmosphere lamp voice control system supporting CAN bus and LIN bus | |
| CN217374177U (en) | Vehicle end charging control guide circuit, circuit board and vehicle | |
| CN205311527U (en) | Automobile body control module of pure electric vehicles 12V system | |
| CN113928404A (en) | Control circuit of steering wheel and electric automobile | |
| CN208715273U (en) | A kind of automobile wireless multifunctional direction disk controller | |
| CN202748644U (en) | A vehicle-mounted bus network system for hybrid vehicles | |
| CN211656117U (en) | Automobile and intelligent touch switch system thereof | |
| CN103625359B (en) | A kind of Vehicular turn lamp control system | |
| CN204895346U (en) | Electrical control system and vehicle based on vehicle BCM | |
| CN220820489U (en) | Vehicle-road cooperation vehicle-mounted intelligent interconnection device | |
| CN219576863U (en) | Filter circuit, filter, power supply circuit and electronic equipment | |
| CN218463597U (en) | Car wiring structure and car | |
| CN215706178U (en) | Airbag module for a steering wheel and steering wheel |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220114 |