CN213322847U - Common-ground mode lamp control structure, adapter, controller and electric vehicle - Google Patents
Common-ground mode lamp control structure, adapter, controller and electric vehicle Download PDFInfo
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- CN213322847U CN213322847U CN202021275932.4U CN202021275932U CN213322847U CN 213322847 U CN213322847 U CN 213322847U CN 202021275932 U CN202021275932 U CN 202021275932U CN 213322847 U CN213322847 U CN 213322847U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses a mode lamp accuse structure and adapter, controller, electric motor car altogether. The structure comprises a front lamp, a rear lamp, a front lamp control circuit, a rear lamp wire harness or a communication wire. The cathodes of the front lamp and the rear lamp are both grounded. The common ground mode lamp control structure is divided into three modes: a centralized short-circuit protection mode, a discrete short-circuit protection mode and a discrete non-short-circuit protection mode. The adapter includes the headlight control circuit. The controller includes the backlight control circuit. The electric vehicle is mounted with the adaptor or the controller. The utility model discloses traditional non-intelligent no short-circuit protection's lamp accuse structure upgrades for the mcu circuit intelligent control, has increased electron short-circuit protection or bus system structure, has realized the purpose that the prevention conflagration perhaps simplified the wiring of lamp accuse system.
Description
Technical Field
The automobile electronic technology, in particular to an electric appliance of an electric vehicle and a lamp control system.
Background
For convenience of description, the present invention defines the following terms:
the 'switching tube' generally refers to a Darlington tube, an IGBT tube or an MOS tube;
the positive electrode current inflow end;
a "negative" current outlet end;
"Large wire" refers to a bundle of wires connected between electrical components of an electric vehicle, which are generally bundled together and respectively connected to various electrical components, some of which are called wire harnesses;
the electric vehicle refers to a low-speed small vehicle taking a battery as power, such as a baby carriage, an electric bicycle, an electric moped, an electric motorcycle, an electric tricycle, a recreational vehicle, a caravan and the like;
"headlight" means the front end of the miniature electric vehicle is used for illuminating the far light or the near light;
the gift lamp is also called a driving lamp and a daytime running lamp, and means a lamp which is turned on when the electric vehicle is started;
"night light" means the electric vehicle turns on the front headlight, namely the back light that lights;
the 'headlight assembly' refers to a component which is arranged on a handlebar or a driving platform at the front end of the electric vehicle and is used for lighting and has the function of displaying parameters of the electric vehicle. Or the original simple headlight lighting application the utility model discloses the back has increased the part of instrument function. Also called lamp holder, combined headlight;
the 'combination instrument' refers to a component with a function of displaying parameters of the electric vehicle at the front end of the electric vehicle, and comprises a component combined with a large lamp (the component is called as the combination instrument, a gauge head and a lamp holder in the industry).
A conventional lamp control structure is shown in fig. 1. The positive poles of all the front switches are connected with the positive wire, and the negative poles respectively control the front lamp and the rear lamp. The cathodes of the front and rear lamps are connected to the same ground. The vehicle rear lamp wire harness is directly connected with a vehicle front switch without being connected through a circuit board, and a mcu circuit is not involved in the control of the electric vehicle lamp. The whole car lamp system has no short-circuit protection circuit and functional circuit board, and only the fuse box is connected in series in the positive line. But the fuse box has a fusing time too long to cause a fire to occur with the fuse attached.
In addition, compared with a discrete lamp control system, the rear lamp needs a plurality of long wires to be connected with the front switch of the vehicle, and wire materials are wasted. The motor controller is inferior to the control of the rear lamp wire-saving.
Disclosure of Invention
The utility model aims at: the traditional non-intelligent lamp control structure without short-circuit protection is upgraded to the mcu circuit intelligent control, the electronic short-circuit protection or bus system structure is added, and the purposes of preventing fire or simplifying the wiring of the lamp control system are achieved.
A common ground mode lamp control structure: the structure is divided into three modes: a centralized short-circuit protection mode, a discrete short-circuit protection mode and a discrete short-circuit-free protection mode; the centralized short-circuit protection mode comprises a front lamp control circuit, a front lamp, a rear lamp wire harness and a rear lamp; the discrete short-circuit protection mode and the discrete short-circuit-free protection mode comprise a front lamp control circuit, a front lamp, a communication line, a rear lamp control circuit and a rear lamp; the discrete mode does not have car tail lamp pencil, and centralized mode does not have back lamp control circuit and communication line.
The cathodes of the front lamp and the rear lamp are both grounded.
The rear lamp is divided into an integrated lamp and a split lamp. The integrated lamp only needs one for small vehicles, and the split lamp needs two for large vehicles.
The common ground mode lamp control structure is divided into three modes: a centralized short-circuit protection mode, a discrete short-circuit protection mode and a discrete non-short-circuit protection mode. Only one of the electric vehicles is selected according to the requirements of customers.
The centralized short-circuit protection mode comprises a front lamp control circuit, a front lamp, a rear lamp and a rear lamp wire harness. The front lamp control circuit controls the front lamp and controls the rear lamp through the rear lamp wire harness. See fig. 3.
The rear lamp wire harness is connected with the circuit board of the front lamp control circuit through a plug. Rather than directly engaging the front switch. This is the obvious difference of the utility model from the traditional lamp control structure.
The headlight control circuit comprises a sampling resistor circuit, an electronic switch circuit, a headlight switch circuit, a comparison circuit and a mcu circuit.
The negative pole of the front car switch circuit is respectively connected with the positive poles of the front car lamp and the rear car lamp, and when the front car switch circuit is in a closed state, the corresponding front car lamp or the corresponding rear car lamp can be lightened. The lighting of the front lamp or the rear lamp is also controlled by the electronic switch circuit, and when the short circuit fault occurs, the front lamp or the rear lamp can not be lighted no matter what the state of the front switch circuit is. This is that the utility model discloses be different from traditional electric motor car light accuse system's technical characterstic.
The front switch of the vehicle comprises a left-turn switch, a right-turn switch, a brake switch, a reversing switch, a far light switch, a near light switch or a switch. The electric vehicle without key start has no door switch. The small car does not distinguish between the distance and the near lights.
The mcu circuit is connected with the front switch and used for detecting the switch information of the front switch. Some switch information needs to be sent to other intelligent components, such as backing and braking information.
The rear lamp wire harness is connected with the front switch circuit of the vehicle and the rear lamp. The rear lamp wiring harness belongs to one part of the large wires.
The electronic switching circuit comprises a switching tube. Only 1 is needed here.
The output of the electronic switch circuit is connected with the anodes of all front switches, and all lamps are turned off when the electronic switch circuit is turned off.
The mcu circuit is connected with the electronic switch circuit and is used for controlling the switch tube. The electronic switching circuit comprises a driving circuit of the switching tube. And driving circuits of Mos tubes, Darlington tubes and IGBTs are different.
And the positive electrode of the sampling resistance circuit is connected with the positive electrode wire.
The voltage at the two ends of the sampling resistor circuit reflects the current flowing by the vehicle lamp, and when the voltage value is larger than a set value, the short-circuit protection is started.
And the negative electrode of the sampling resistance circuit is connected with the electronic switch circuit.
And if the sampling resistance circuit is not used, the internal resistance of the switching tube is used for replacing the sampling resistance circuit, and the electronic switching circuit is directly connected with the positive electrode wire. However, the resistance value of the internal resistor is small, and the consistency is not good, so that the current limiting is not accurate.
The sampling resistor circuit can also be moved between the negative pole of the electronic switching circuit and the front switching circuit.
The comparison circuit is connected with the sampling resistor circuit and is used for detecting the current flowing through the whole vehicle lamp. If the sampling resistor is replaced by the internal resistance of the switching tube in order to save cost, the comparison circuit is connected with the electronic switching circuit.
The comparison circuit includes a differential operational amplifier circuit.
The mcu circuit is connected with the comparison circuit and used for detecting the output state of the comparison circuit.
The mcu circuit controls the electronic switch circuit according to the state of the comparison circuit.
The discrete short-circuit protection mode comprises a front lamp control circuit, a rear lamp control circuit, a front lamp, a rear lamp and a communication line. See fig. 4.
The front lamp control circuit and the rear lamp control circuit both comprise a mcu circuit, and data are exchanged between the mcu circuits through the communication line. The lamp control switch information of the rear lamp control circuit is transmitted from the front lamp control circuit.
The communication line belongs to one part of the large lines.
The front lamp control circuit and the rear lamp control circuit respectively control the front lamp and the rear lamp.
The headlight control circuit comprises a sampling resistor circuit, an electronic switch circuit, a headlight switch circuit, a comparison circuit and a mcu circuit.
The negative pole of the front switch circuit is respectively connected with the positive pole of the headlight, and when the front switch circuit is in a closed state, the corresponding headlight can be lightened. The turning on of the headlights is also controlled by the electronic switch circuit, and when a short-circuit fault occurs, the headlights cannot be turned on regardless of the state of the front-of-vehicle switch circuit. This is that the utility model discloses be different from traditional electric motor car light accuse system's technical characterstic.
The front switch of the vehicle comprises a left-turn switch, a right-turn switch, a brake switch, a reversing switch, a far light switch, a near light switch or a switch. The electric vehicle without key start has no door switch. The small car does not distinguish between the distance and the near lights.
The mcu circuit is connected with the front switch and used for detecting the switch information of the front switch so as to send the information, such as backing, braking, left-turning and right-turning information, to the mcu circuit in the rear lamp control circuit through the communication line.
The electronic switching circuit comprises a switching tube. The output of the electronic switch circuit is connected with the anodes of all front switches, and all lamps are turned off when the electronic switch circuit is turned off.
The electronic switching circuit comprises a driving circuit of the switching tube. And driving circuits of Mos tubes, Darlington tubes and IGBTs are different.
The mcu circuit is connected with the electronic switch circuit and is used for controlling the switch tube.
And the positive electrode of the sampling resistance circuit is connected with the positive electrode wire.
The voltage at the two ends of the sampling resistor circuit reflects the current flowing by the vehicle lamp, and the short-circuit protection of the vehicle lamp is started when the voltage value of the voltage is greater than a set value.
And the negative electrode of the sampling resistance circuit is connected with the electronic switch circuit.
And if the sampling resistance circuit is not used, the internal resistance of the switching tube is used for replacing the sampling resistance circuit, and the electronic switching circuit is directly connected with the positive electrode wire.
The sampling resistor circuit can also be moved between the negative pole of the electronic switching circuit and the front switching circuit.
The comparison circuit is connected with the sampling resistor circuit and is used for detecting the current flowing through the headlamp.
If the sampling resistor is replaced by the internal resistance of the switching tube in order to save cost, the comparison circuit is connected with the electronic switching circuit.
The comparison circuit includes a differential operational amplifier circuit.
The mcu circuit is connected with the comparison circuit and used for detecting the output state of the comparison circuit.
The mcu circuit controls the electronic switch circuit according to the state of the comparison circuit.
The rear lamp control circuit comprises a sampling resistor circuit, an electronic switch circuit, a comparison circuit and a mcu circuit, and belongs to a functional circuit of a motor controller.
The electronic switch circuit comprises 2-6 switch tubes which respectively control the rear lights of the vehicle. The rear lamp comprises a left turn, a right turn, a reverse, a brake, a night lamp (width indicating lamp) or a daytime running lamp. Some cars have rear fog lamps. The small-sized vehicle is only provided with a night lamp and a brake lamp.
The output of the electronic switch circuit is respectively connected with the anode of the rear lamp, and when the electronic switch circuit is turned off, the relevant rear lamp is turned off.
The electronic switching circuit comprises a driving circuit of the switching tube. And driving circuits of Mos tubes, Darlington tubes and IGBTs are different.
The mcu circuit is connected with the electronic switch circuit and is used for controlling the switch tube.
And the positive electrode of the sampling resistance circuit is connected with the positive electrode wire.
The voltage at the two ends of the sampling resistor circuit reflects the current flowing by the vehicle lamp, and when the voltage value is larger than a set value, the short-circuit protection of the vehicle rear lamp is started.
And the negative electrode of the sampling resistance circuit is connected with the electronic switch circuit.
The comparison circuit is connected with the sampling resistor circuit and used for detecting the current flowing through the rear lamp.
The comparison circuit includes a differential operational amplifier circuit.
The mcu circuit is connected with the comparison circuit and used for detecting the output state of the comparison circuit.
The mcu circuit controls the electronic switch circuit according to the state of the comparison circuit.
The discrete short-circuit-free protection mode comprises a front lamp control circuit, a rear lamp control circuit, a front lamp, a rear lamp and a communication line. See fig. 2.
The front lamp control circuit and the rear lamp control circuit both comprise a mcu circuit, and data are exchanged between the mcu circuits through the communication line. The lamp control switch information of the rear lamp control circuit is transmitted from the front lamp control circuit.
The communication line belongs to one part of the large lines.
The front lamp control circuit and the rear lamp control circuit respectively control the front lamp and the rear lamp.
The headlight control circuit comprises a headlight switch circuit and a mcu circuit.
And the positive electrode of the front switch circuit is connected to the positive electrode line in a centralized manner.
And the negative electrode of the front vehicle switch circuit is respectively connected with the positive electrode of the front vehicle lamp, and when the front vehicle switch circuit is in a closed state, the corresponding front vehicle lamp is lightened.
The mcu circuit is connected with the front switch and used for detecting the switch information of the front switch so as to be sent to the mcu circuit in the rear lamp control circuit through the communication line. Such as: left turn, right turn, reverse, brake, night light.
The rear lamp control circuit comprises an electronic switch circuit and a mcu circuit. The back light control circuit belongs to a functional circuit of a motor controller.
And the positive electrode of the electronic switch circuit is connected with a positive electrode line in a centralized manner.
The electronic switch circuit comprises 2-6 switch tubes which respectively control the rear lights of the vehicle. The rear lamp comprises a left turn, a right turn, a reverse, a brake, a night lamp (width indicating lamp) or a daytime running lamp. Some cars have rear fog lamps. The small-sized vehicle is only provided with a night lamp and a brake lamp.
The output of the electronic switch circuit is respectively connected with the anode of the rear lamp, and when the electronic switch circuit is turned off, the relevant rear lamp is turned off.
The mcu circuit is connected with the electronic switch circuit and is used for controlling the switch tube.
An adapter applied to the common ground mode lamp control structure comprises the headlight control circuit.
The adapter becomes a meter if the electric vehicle parameter display function is added and is installed in the meter. Also known as a header, combination meter.
The adapter becomes a headlamp assembly if the adapter is added with an electric vehicle parameter display function and is installed in a headlamp. Also known as combination headlamps.
A controller is applied to the common ground mode lamp control structure and comprises the rear lamp control circuit.
An electric vehicle is provided with the common ground mode lamp control structure, the adapter or the controller.
The utility model discloses an effect: the traditional non-intelligent lamp control structure without short-circuit protection is upgraded to the mcu circuit intelligent control, the electronic short-circuit protection or bus system structure is added, and the purposes of preventing fire or simplifying the wiring of the lamp control system are achieved.
Drawings
FIG. 1 is a conventional lamp control structure;
FIG. 2 is a schematic diagram of a discrete common ground structure no short-circuit protection lamp control circuit of the present invention;
fig. 3 is a centralized common ground structure short-circuit protection lamp control circuit of the present invention;
fig. 4 is a circuit for controlling the discrete common ground short-circuit protection lamp of the present invention;
FIG. 5 is a rear lamp control circuit of a common ground structure unprotected electronic switch vehicle;
FIG. 6 is a front lamp control circuit of the common ground structure of the present invention;
fig. 7 shows the under-ground sampling vehicular headlight control circuit of the present invention.
Detailed Description
The utility model discloses it is three kinds to divide into altogether mode lamp accuse structure: a centralized short-circuit protection mode, a discrete short-circuit protection mode and a discrete non-short-circuit protection mode. Only one of the electric vehicles is selected according to the requirements of customers.
The headlight includes left turn, right turn, far light, near light and daytime running. The small car does not distinguish between the distance and the near lights. Some vehicle types have no daytime running lights.
The rear lamp is divided into an integrated lamp and a split lamp, the integrated lamp only needs one for a small vehicle, and the split lamp needs two lamps for a large vehicle.
The rear lamp of the vehicle comprises a left turn, a right turn, a brake, a reverse and a night walk.
The three modes all have the MCU circuit, and the main considered technical parameters of the type selection of the MCU chip are as follows: the operating speed, the temperature range, the quantity of GPIOs, the FLASH size, the RAM size, the mode of the external communication port and other parameters are considered. At present, a plurality of single-chip microcomputers in the market can meet the requirement, and for example, the single-chip microcomputers can be used in a plurality of brand technologies of manufacturers such as Microchip, freescale, ST, infineon, cypress and the like.
Both modes of discrete communication involve communication, and the modes of communication can be selected from uart, lin, can, i2c, 485, and gpio analog communication. Preferably, single wire half duplex mode wiring is simplest.
The electronic switching circuit is preferably a mos transistor and is P-channel.
The front switches comprise a left-turn switch, a right-turn switch, a brake switch, a reversing switch, a far light switch, a near light switch, a switch of a switch, and the like.
The comparator circuit contains an operational amplifier chip, most commonly LM 358. But must use differential mode.
The sampling resistor circuit includes a sampling resistor, the resistance of which is determined according to the total current, generally 100mR to 5R.
The converter is a DC/DC voltage converter which converts the voltage of the storage battery to the voltage suitable for the body electrical appliances, and the voltage is generally 12v for the small car and 24v for the large car. In many small-sized electric vehicles, the voltage of the storage battery can be directly used for saving cost. The converter can then be dispensed with.
Fig. 5 is a rear lamp control circuit of a common-ground structure unprotected electronic switch vehicle, belonging to a part of the rear lamp control circuit. The mcu circuit controls 5 switching tubes. 5 switch tubes control 5 rear lights. All the rear lamps are grounded. The switch information of 5 car rear lights is obtained by the mcu circuit from the front light control circuit through the communication line. The circuit does not have a short-circuit protection function.
Fig. 6 shows a front lamp control circuit of a common ground structure according to the present invention, which belongs to a part of the front lamp control circuit. The sampling resistor is arranged at the upper end of the electronic switch circuit. The mcu circuit controls the electronic switching circuit and the flasher, and detects the state of the comparison circuit. The 5 front switches control 5 headlights. All headlights are common.
Fig. 7 shows a headlamp control circuit of the common ground sampling vehicle of the present invention, which belongs to a part of the headlamp control circuit. The sampling resistor is arranged at the lower end of the electronic switch circuit. The mcu circuit controls the electronic switching circuit and the flasher, and detects the state of the comparison circuit. The 5 front switches control 5 headlights. All headlights are common.
The centralized short-circuit protection mode is shown in fig. 3.
Compared with the traditional lamp control system, the multi-output sampling resistance circuit, the electronic switch circuit, the comparison circuit and the mcu circuit. The front end of the switch circuit in front of the vehicle is controlled by an electronic switch, the current is measured by a sampling resistor, and if the current is abnormal, the protection is started.
The front light control circuit controls both the front light and the rear light.
The portion outlined by the dashed line is the headlight control circuit.
This mode has the advantage of not burdening the motor controller, but also a reliable short circuit protection. But the wiring is relatively complex. If the cost is to be reduced, the sampling resistor circuit and the comparison circuit are eliminated.
The discrete short-circuit protection mode is shown in fig. 4.
The front lamp control circuit is responsible for the front lamps of the vehicle, and the rear lamp control circuit is responsible for the rear lamps of the vehicle, and data are exchanged among the front lamps, the rear lamps and the rear lamps through communication lines. The switch information of the rear lamp is detected and processed by the mcu circuit in the front lamp control circuit and then transmitted by the communication line.
The front and the back are respectively responsible for short-circuit protection. The front lamp is broken and the back lamp is turned off when the back lamp fails. Unlike the centralized short-circuit protection mode, centralized protection, all lights are turned off as long as one circuit fails.
The parts outlined by the dashed lines are a front lamp control circuit and a rear lamp control circuit respectively.
The advantage of this mode is the reduction of the rear lamp associated wiring harness and also the reliable short circuit protection. This is the most preferred of the present invention.
The discrete short-circuit-free protection mode is shown in fig. 2.
The front lamp control circuit is responsible for the front lamps of the vehicle, and the rear lamp control circuit is responsible for the rear lamps of the vehicle, and data are exchanged among the front lamps, the rear lamps and the rear lamps through communication lines. The switch information of the rear lamp is detected and processed by the mcu circuit in the front lamp control circuit and then transmitted by the communication line.
The front and the back are respectively responsible for the switching of the lamp.
The parts outlined by the dashed lines are a front lamp control circuit and a rear lamp control circuit respectively.
The advantage of this mode is that the rear light associated wiring harness is reduced, but there is no reliable short circuit protection.
The foregoing embodiments and description have been provided merely to illustrate the principles of the invention and one example thereof, and various changes and modifications may be made based on the principles and within the scope of the invention as defined by the appended claims.
Claims (7)
1. A common ground mode lamp control structure is characterized in that: the structure is divided into three modes: a centralized short-circuit protection mode, a discrete short-circuit protection mode and a discrete short-circuit-free protection mode; the centralized short-circuit protection mode comprises a front lamp control circuit, a front lamp, a rear lamp wire harness and a rear lamp; the discrete short-circuit protection mode and the discrete short-circuit-free protection mode comprise a front lamp control circuit, a front lamp, a communication line, a rear lamp control circuit and a rear lamp; the cathodes of the front lamp and the rear lamp are grounded; the rear lamp is divided into an integrated lamp and a split lamp, the integrated lamp is only one for small vehicles, and the split lamp is two for large vehicles.
2. A common ground mode lamp control structure as defined in claim 1, wherein: the centralized short-circuit protection mode comprises a front lamp control circuit, a front lamp, a rear lamp and a rear lamp wire harness; the front lamp control circuit controls the front lamp and controls the rear lamp through the rear lamp wire harness; the rear lamp wire harness is connected with the circuit board of the front lamp control circuit through a plug;
the headlight control circuit comprises a sampling resistor circuit, an electronic switch circuit, a headlight switch circuit, a comparison circuit and a mcu circuit;
the negative pole of the front car switch circuit is respectively connected with the positive poles of the front car lamp and the rear car lamp, and when the front car switch circuit is in a closed state, the corresponding front car lamp or the corresponding rear car lamp can be lightened; the mcu circuit is connected with the front switch and used for detecting the switch information of the front switch; the rear lamp wire harness is connected with the front switch circuit and the rear lamp; the rear lamp wire harness belongs to one part of the large wires;
the electronic switching circuit comprises a switching tube; the output of the electronic switch circuit is connected with the anodes of all front switches, and all the vehicle lamps are turned off when the electronic switch circuit is turned off; the mcu circuit is connected with the electronic switch circuit and is used for controlling the switch tube;
the positive electrode of the sampling resistance circuit is connected with a positive electrode wire; the voltage at two ends of the sampling resistor circuit reflects the current flowing by the vehicle lamp of the whole vehicle, and when the voltage value is larger than a set value, short-circuit protection is started; the negative electrode of the sampling resistance circuit is connected with the electronic switch circuit; if the cost is reduced, the sampling resistance circuit is cancelled and replaced by the internal resistance of the switching tube, and the electronic switching circuit is directly connected with the positive electrode wire; the sampling resistance circuit can also be moved between the negative electrode of the electronic switch circuit and the front switch circuit;
the comparison circuit is connected with the sampling resistor circuit and is used for detecting the current flowing through the whole vehicle lamp; if the sampling resistor is replaced by the internal resistance of the switching tube in order to save cost, the comparison circuit is connected with the electronic switching circuit; the comparison circuit comprises a differential operational amplifier circuit; the mcu circuit is connected with the comparison circuit and is used for detecting the output state of the comparison circuit;
the mcu circuit controls the electronic switch circuit according to the state of the comparison circuit.
3. A common ground mode lamp control structure as defined in claim 1, wherein: the discrete short-circuit protection mode comprises a front lamp control circuit, a rear lamp control circuit, a front lamp, a rear lamp and a communication line; the front lamp control circuit and the rear lamp control circuit both comprise a mcu circuit, and data are exchanged between the mcu circuits through the communication line; the communication line belongs to one part of the large line; the front lamp control circuit and the rear lamp control circuit respectively control the front lamp and the rear lamp;
the headlight control circuit comprises a sampling resistor circuit, an electronic switch circuit, a headlight switch circuit, a comparison circuit and a mcu circuit;
the negative pole of the front switch circuit of the vehicle is respectively connected with the positive pole of the front lamp, and when the front switch circuit of the vehicle is in a closed state, the corresponding front lamp can be lightened; the mcu circuit is connected with the front switch and used for detecting the switch information of the front switch so as to send the information to the mcu in the rear lamp control circuit through the communication line;
the electronic switching circuit comprises a switching tube; the output of the electronic switch circuit is connected with the anodes of all front switches, and all the vehicle lamps are turned off when the electronic switch circuit is turned off; the mcu circuit is connected with the electronic switch circuit and is used for controlling the switch tube;
the positive electrode of the sampling resistance circuit is connected with a positive electrode wire; the voltage at the two ends of the sampling resistor circuit reflects the current flowing by the vehicle lamp, and when the voltage value is greater than a set value, the short-circuit protection of the vehicle lamp is started; the negative electrode of the sampling resistance circuit is connected with the electronic switch circuit; if the cost is reduced, the sampling resistance circuit is cancelled and replaced by the internal resistance of the switching tube, and the electronic switching circuit is directly connected with the positive electrode wire; the sampling resistance circuit can also be moved between the negative electrode of the electronic switch circuit and the front switch circuit;
the comparison circuit is connected with the sampling resistor circuit and is used for detecting the current flowing through the headlight; if the sampling resistor is replaced by the internal resistance of the switching tube in order to save cost, the comparison circuit is connected with the electronic switching circuit; the comparison circuit comprises a differential operational amplifier circuit; the mcu circuit is connected with the comparison circuit and is used for detecting the output state of the comparison circuit;
the mcu circuit controls the electronic switch circuit according to the state of the comparison circuit;
the rear lamp control circuit comprises a sampling resistor circuit, an electronic switch circuit, a comparison circuit and a mcu circuit; the rear lamp control circuit belongs to a functional circuit of a motor controller;
the electronic switching circuit comprises 2-6 switching tubes; the output of the electronic switch circuit is respectively connected with the anode of the rear lamp, and the relevant rear lamp is turned off when the electronic switch circuit is turned off; the mcu circuit is connected with the electronic switch circuit and is used for controlling the switch tube;
the positive electrode of the sampling resistance circuit is connected with a positive electrode wire; the voltage at two ends of the sampling resistor circuit reflects the current flowing by the vehicle lamp of the whole vehicle, and when the voltage value is larger than a set value, the short-circuit protection of the vehicle rear lamp is started; the negative electrode of the sampling resistance circuit is connected with the electronic switch circuit;
the comparison circuit is connected with the sampling resistor circuit and is used for detecting the current flowing through the rear lamp; the comparison circuit comprises a differential operational amplifier circuit; the mcu circuit is connected with the comparison circuit and is used for detecting the output state of the comparison circuit;
the mcu circuit controls the electronic switch circuit according to the state of the comparison circuit.
4. A common ground mode lamp control structure as defined in claim 1, wherein: the discrete short-circuit-free protection mode comprises a front lamp control circuit, a rear lamp control circuit, a front lamp, a rear lamp and a communication line; the front lamp control circuit and the rear lamp control circuit both comprise a mcu circuit, and data are exchanged between the mcu circuits through the communication line; the communication line belongs to one part of the large line; the front lamp control circuit and the rear lamp control circuit respectively control the front lamp and the rear lamp;
the headlight control circuit comprises a headlight switch circuit and a mcu circuit;
the positive electrode of the front switch circuit is connected to the positive electrode line in a concentrated mode; the negative pole of the front switch circuit of the vehicle is respectively connected with the positive pole of the front lamp, and when the front switch circuit of the vehicle is in a closed state, the corresponding front lamp is lightened; the mcu circuit is connected with the front switch and used for detecting the switch information of the front switch so as to send the information to the mcu in the rear lamp control circuit through the communication line;
the rear lamp control circuit comprises an electronic switch circuit and a mcu circuit; the rear lamp control circuit belongs to a functional circuit of a motor controller;
the positive electrode of the electronic switch circuit is connected with a positive electrode line in a centralized manner; the electronic switching circuit comprises 2-6 switching tubes; the output of the electronic switch circuit is respectively connected with the anode of the rear lamp, and the relevant rear lamp is turned off when the electronic switch circuit is turned off; the mcu circuit is connected with the electronic switch circuit and is used for controlling the switch tube.
5. An adapter for use in the common ground mode lamp control structure of claim 1, comprising the headlamp control circuit of claim 2, 3, or 4; if the adapter is added with the electric vehicle parameter display function and is arranged in the instrument, the adapter becomes the instrument; the adapter becomes a headlamp assembly if the adapter is added with an electric vehicle parameter display function and is installed in a headlamp.
6. A controller, characterized by: the controller is applied to the common ground mode lamp control structure of claim 1, and comprises the rear lamp control circuit of claim 3 or 4.
7. An electric vehicle, characterized in that: the electric vehicle is applied with the common ground mode lamp control structure of any one of claims 1 to 4, is provided with the adaptor of claim 5, or is provided with the controller of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021275932.4U CN213322847U (en) | 2020-07-03 | 2020-07-03 | Common-ground mode lamp control structure, adapter, controller and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021275932.4U CN213322847U (en) | 2020-07-03 | 2020-07-03 | Common-ground mode lamp control structure, adapter, controller and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213322847U true CN213322847U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021275932.4U Active CN213322847U (en) | 2020-07-03 | 2020-07-03 | Common-ground mode lamp control structure, adapter, controller and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213322847U (en) |
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2020
- 2020-07-03 CN CN202021275932.4U patent/CN213322847U/en active Active
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