CN116853142A - Motor box and adapter, converter, controller, main wire, tail lamp and electric vehicle - Google Patents

Motor box and adapter, converter, controller, main wire, tail lamp and electric vehicle Download PDF

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Publication number
CN116853142A
CN116853142A CN202210308343.9A CN202210308343A CN116853142A CN 116853142 A CN116853142 A CN 116853142A CN 202210308343 A CN202210308343 A CN 202210308343A CN 116853142 A CN116853142 A CN 116853142A
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CN
China
Prior art keywords
circuit
wire
converter
communication
motor
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Application number
CN202210308343.9A
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Chinese (zh)
Inventor
请求不公布姓名
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Tianjin Jiujiu Electronics Co ltd
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Tianjin Jiujiu Electronics Co ltd
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Application filed by Tianjin Jiujiu Electronics Co ltd filed Critical Tianjin Jiujiu Electronics Co ltd
Priority to CN202210308343.9A priority Critical patent/CN116853142A/en
Publication of CN116853142A publication Critical patent/CN116853142A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/30—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces
    • 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
    • B60R16/023—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 transmission of signals between vehicle parts or subsystems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a motor box, an adapter, a converter, a controller, a large line, a tail lamp and an electric vehicle. The motor case includes an mcu circuit, a communication circuit, a controller circuit, and a converter circuit. The mcu circuit connects the communication circuit, the controller circuit, and the converter circuit. The mcu circuit includes an mcu chip. The converter circuit converts the battery voltage to a rated safety voltage to power the electric vehicle electrical components. The converter circuit comprises a PWM driving circuit, an electronic switching circuit, an inductance circuit, a follow current circuit, a filter circuit and a voltage acquisition circuit. The application of the invention ensures that the bus control of the electric appliance structure of the electric vehicle is highly intelligent. Simple structure, easy installation and maintenance, low cost and high reliability.

Description

Motor box and adapter, converter, controller, main wire, tail lamp and electric vehicle
Technical Field
The technical field of electric vehicles, in particular to an electric vehicle appliance.
Background
For convenience of description of the present invention, the following abbreviations are used:
"large wire" refers to the bundle of wires that connect between the electrical appliances of an electric vehicle, which are typically bundled together and individually attached to various electrical components, sometimes referred to as a harness.
The electric vehicle refers to a vehicle powered by a battery, such as a four-wheel electric vehicle, an electric sightseeing vehicle, an electric sweeper, an electric forklift, a baby carrier, an electric bicycle, an electric power assisting vehicle, an electric motorcycle, an electric tricycle and the like.
"plug" refers to those electronic devices with blades at the ends of the wire ends that make electrical, opposite-plug connection.
"wire end" refers to a small section of wire coming out of an electrical component.
"headlight" refers to a far or near light used for illumination at the front end of a small electric vehicle.
The gift lamp, also called driving lamp and daytime running lamp, refers to a lamp which is turned on when the electric vehicle is started.
The night lamp is a lamp which is turned on when the electric vehicle turns on a front headlight, namely a lighted headlight, and is equivalent to a width indicating lamp of the electric vehicle when the electric vehicle runs at night.
The headlight assembly is a part which is arranged 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 illumination is added with the components of the instrument display function after the adapter circuit of the invention is applied. Also called lamp cap, combined headlight.
"combination meter" refers to a component having a function of displaying parameters of an electric vehicle at the front end of the electric vehicle, and includes a component combined with a headlight. Or the original simple instrument displays the parts with the functions of switching and signal processing of the front electric appliance added after the adapter circuit of the invention is applied. Also known in the industry as headers.
"combination switch" means a component mounted on the handlebar or the steering column with a plurality of switches combined together, such as a light switch, a steering switch, a horn switch, a three-position switch, or a cruise switch. 2 switch combinations are called two-in-one switches in the industry, 3 switch combinations are called three-in-one switches in the industry, and 4 switch combinations are called four-in-one switches in the industry. Currently, three-in-one switches are commonly used in the market.
The combined turning handle refers to a part which is arranged on a handlebar or a steering platform and is provided with a plurality of switches and the turning handle, such as a single or a plurality of combinations of a lamp control switch, a steering switch, a horn switch, a P-gear switch, a reversing switch, a three-gear switch, a cruise switch and the like. 2 switch combined industry called two-in-one rotary handle, 3 switch combined industry called three-in-one rotary handle, 4 switch combined industry called four-in-one rotary handle. At present, the common market is two-in-one rotary handle.
"electronic switching tube" refers broadly to a darlington tube, an IGBT tube, or a MOS tube.
The "front electric appliance" refers to all electric appliances near the front end instrument of the electric vehicle, such as an electric door lock, a brake switch, a reversing switch, a gear switch, a P-gear switch, a repairing switch, a cruising switch, various lamps, a windscreen wiper, a loudspeaker, a vehicle door, an air conditioner, a sound box and the like.
"converter" refers to a component that converts battery voltage (48V, 72V to 300V) to a lower voltage (typically a cart 24V cart 12V).
"front patent" refers to Chinese patent "CN202220040948X".
The motor box is connected with the controller by a wire harness connecting wire, and the wire harness connecting wire comprises a single or multiple combined signal wire of a rotating handle signal, a brake signal, a locking wire, a reversing gear, a third gear, a cruising gear, a P gear, an anti-theft lock motor, one-key restoration, soft and hard starting, rated voltage switching, motor learning, a linear speed of the motor, a positive electrode of a power supply and a negative electrode of the power supply. The connection mode is too many and complicated, the plug wires are easy to make mistakes, the cost is too high, and the reliability of a plurality of fault points is reduced.
In addition, the motor box does not have a converter function. However, the electric vehicles approved by the national standard catalogue all need a safety voltage of 12V low voltage. Therefore, the electric vehicle needs a converter capable of converting the high voltage (more than 48V) of the battery into the low voltage of 12V. This makes it necessary to install one more electric component for the electric vehicle, and increases the cost, 1 more installation space, 1 more wiring group, 1 more production process, 1 more power consumption of the component, and one more failure point.
Disclosure of Invention
The present invention is to improve the above-mentioned shortcomings of the prior patent and make some important improvements.
The connection between the motor box or the converter and the controller is increased by a communication mode, and the motor box or the converter and the controller are connected by a communication line instead of an original wire harness connection line. If a single-wire half duplex communication mode is used (LIN or single-wire UART communication), 1 wire replaces more than ten wires. Therefore, the wiring is simple, the wiring is basically free from errors, the cost is low, the fault points are few, and the reliability is high.
The communication following switch circuit of the motor box or the converter is used for completing the on-off of an electric vehicle electrical system (comprising the motor box or the converter and the controller) by means of a remote controller, a mobile phone APP or a communication wire for an NFC card by matching with the man-machine operation of the converter, and a special switch for on-off such as an electric door lock is not needed, so that the electric vehicle electrical system is also an innovation in the industry.
According to the intermittent overload protection mode, the power control and the overcurrent protection of the output of the converter circuit are realized according to the voltage of the input power supply and the value of the PWM duty ratio, the cost of a resistor sampling circuit, an operational amplifier circuit, a current acquisition circuit and a comparison circuit of the traditional converter is saved, and meanwhile, the reliability is improved. As the component reduction failure rate must be reduced. This is also an innovation.
The motor box or the converter provides working power for the controller, saves the cost of a primary power supply circuit of the controller, and is also an initial source in the industry.
In addition, the motor box is added with a converter function, and the mcu chip, the power circuit, the communication circuit, the storage battery voltage detection circuit, the shell, the production procedure and the inspection procedure of the common motor box are used for saving materials and labor cost, and meanwhile, the number of installation spaces is 1, the number of wiring is 1, the number of production procedures is 1, the number of component power consumption is 1, and the number of fault points is 1. The novelty and the practicability of the motor box are highlighted.
A motor cartridge includes an mcu circuit, a communication circuit, a controller circuit, and a converter circuit. See fig. 3.
The mcu circuit connects the communication circuit, the controller circuit, and the converter circuit.
The mcu circuit includes an mcu chip.
The converter circuit converts the battery voltage to a rated safety voltage to power the electric vehicle electrical components. Typically a cart 24V cart 12V.
The converter circuit comprises a PWM driving circuit, an electronic switching circuit, an inductance circuit, a follow current circuit, a filter circuit and a voltage acquisition circuit. See fig. 4.
The mcu chip comprises an internal PWM module, and an output pin of the mcu circuit is connected with the PWM driving circuit and the voltage acquisition circuit. The electronic switching circuit is connected with the PWM driving circuit and the inductance circuit. The freewheel circuit is connected with the inductance circuit. The filter circuit is connected with the inductance circuit and the freewheel circuit.
The electronic switching circuit comprises an electronic switching tube. mos tubes are most common, especially n-channel.
The PWM driving circuit comprises a driving circuit required by the control electrode of the electronic switch tube, wherein the driving circuit consists of a resistor, a capacitor and a triode, and the driving circuit is completed by a special driving chip. The capacitance includes bootstrap capacitance and miller capacitance. The former is low in cost but complex in circuit, and the latter is simple but high in cost.
The inductive circuit includes an inductance. And typically greater than 10uH, and with a magnetic core.
The freewheel circuit includes a freewheel diode.
The filter circuit comprises an electrolytic capacitor, typically greater than 100uF.
The voltage acquisition circuit comprises a resistor voltage division circuit.
The communication circuit is connected with the adapter through a large wire. The large line comprises a communication line. The motor box is connected with the adapter through the large wire and exchanges data bidirectionally according to a communication protocol. This is the infrastructure of the electric vehicle bus control system.
The controller circuit is connected with the controller. The motor box transmits signals required by the controller from the adapter according to a communication protocol through the large wire, and the signals are converted by the controller circuit and then output to the controller. The motor box converts signals output by the controller into signals through the controller circuit and sends the signals to the adapter according to a communication protocol through the large line. The circuit structure is as in the previous patent.
The motor box is characterized by further comprising a foot brake detection circuit and a foot brake switch. The mcu circuit is connected with the foot brake detection circuit. If the service brake switch is connected to the front adapter or if there is no service brake switch (e.g., a two-wheeled vehicle) on the vehicle, the service brake detection circuit is eliminated. This is an option.
The motor box is provided with a model which also comprises a tail lamp control circuit and is connected with a tail lamp. The mcu circuit is connected with the tail lamp control circuit. And the tail lamp signal of the adapter is transmitted to the motor box through the large wire according to a communication protocol, and then the tail lamp is controlled by the tail lamp circuit.
The tail light control circuit may be eliminated if the tail light is directly controlled by the adapter. But the number of wires of the large wire is increased, and the structure is more complicated.
The tail lamp control circuit comprises an electronic switch overcurrent protection circuit, and is disclosed in the prior patent.
The tail light control circuit may be eliminated if the adapter centrally controls the tail lights via a dedicated line. This is an option.
The motor box has a model comprising a communication follow-up switch circuit, see Chinese patent CN201822156710X. The communication follow-up switch circuit is connected with the communication line and the power supply circuit, and the working power supply of the motor box is switched on and off according to the signal of the communication line, so that the wire outlet of the electric door lock is not needed, and the electric door lock is also not needed. By the structure, the working states of the motor box and the controller are controlled by the adapter, and the system can be started or shut down by using a remote controller, a mobile phone APP or an NFC card.
The controller circuit includes a motor communication circuit. The motor communication circuit is connected with the controller through a motor wire.
The motor wire includes a communication wire. The number of wires varies depending on the communication mode, and the present invention prefers a single wire half duplex mode, requiring only 1 wire.
The motor box exchanges data bidirectionally according to a communication protocol and the controller through the motor wire.
The communication wire replaces the wiring harness connecting wire of the existing motor box, and the wiring harness connecting wire comprises a single or multiple combined signal wire of a rotating handle signal, a brake signal, a locking wire, a reversing signal, a three-gear signal, a cruising signal, a P-gear signal, an anti-theft lock motor, a one-key restoration signal, a soft and hard starting signal, a rated voltage switching signal, a motor learning signal wire, a linear speed of the motor signal wire and a linear speed of the motor signal wire. See the previous patent.
After the improvement of the invention, the connection between the motor box and the controller is particularly simple.
The connection line between the motor box and the controller is concentrated into 1 socket. This reduces labor costs over multiple plugs saving line processes. The operation of the motor cartridge and the controller is not problematic if multiple plugs are used.
The connection line is divided into a communication mode and a wire harness mode.
The connection lines of the communication mode comprise a power positive line, a power negative line and a communication line. If the controller is not provided with a communication follow-up switch circuit, the connecting line also comprises a locking wire for switching on and off the working power supply of the controller.
The wiring of the wiring harness mode comprises a single or multiple combined signal wires of a rotating handle signal, a brake signal, a locking wire, a reversing wire, a third gear, cruising wire, a P gear, an anti-theft lock motor, one-key repair, soft and hard starting, rated voltage switching, motor learning, a linear speed of the motor, a positive electrode of a power supply and a negative electrode of the power supply.
The power positive line and the power negative line refer to power lines which are internally connected to the storage battery by the controller, and the power lines are connected to the motor box from the power lines. The battery can also be externally connected with 1 socket alone, but the wiring of the motor box is complicated.
The motor box is provided with a model, and in order to reduce the cost of the controller, the connecting wire also comprises a working power supply output wire for providing primary power supply for the controller. The controller requires 10-18V mos tube working power supply and 3.3-5.0V power supply of mcu system. The former is called primary power supply, and the latter is called secondary power supply. This eliminates the cost of the primary power circuit of the controller. And the lock wire is replaced by the working power supply output wire for the wiring of the wiring harness mode. The voltage of the working power supply output line is preferably 15V. The output line of the converter circuit may be eliminated if the controller must have its own independent primary power supply. This is an option.
The motor box comprises a shell and a PCB. The housing includes a bottom shell. The bottom shell is used for fixing one side of the PCB. The motor box is waterproof and dustproof, the plug-in components and the socket of PCB circuit board face down or incline downwards, and the drain pan is upwards or incline upwards. This is an option, except that this installation is safest.
The converter circuit includes an overload protection circuit. The protection circuit is used for protecting the safety of the converter circuit and preventing burning out. Meanwhile, the electric vehicle is prevented from being short-circuited to generate fire.
The overload protection circuit is divided into a direct control mode and an indirect control mode.
The direct control mode comprises a resistance sampling circuit, an operational amplifier circuit, a current acquisition circuit and a comparison circuit. The mcu circuit is connected with the current acquisition circuit. The operational amplifier circuit is connected with the current acquisition circuit and the resistance sampling circuit. The comparison circuit is connected with the mcu circuit and the resistance sampling circuit. The operational amplifier circuit comprises an operational amplifier chip. And if some of the mcu chips contain an internal operational amplifier module, the operational amplifier circuit can be omitted. The comparison circuit includes a comparator. If some of the mcu chips include an internal comparator module, the comparison circuit may be omitted. The resistance sampling circuit comprises a sampling resistance and a signal output filter circuit. The mcu circuit limits current according to the output value of the op-amp circuit. The mcu circuit realizes overload or short-circuit protection according to the output of the comparison circuit, and generally triggers the completion of the interrupt program of the mcu chip. The mode has the advantages of accurate current limiting value and overload threshold value, good consistency and high circuit cost. See fig. 5.
The intermittent mode comprises an input power supply voltage acquisition circuit. The mcu circuit is connected with the input power supply voltage acquisition circuit. The input power supply voltage acquisition circuit comprises a voltage dividing resistor circuit and is used for adjusting the input voltage range from a power supply signal to the ADC channel of the mcu chip. And the mcu chip roughly realizes the power control and the overcurrent protection of the output of the converter circuit according to the voltage of the input power supply and the value of the PWM duty ratio. The output power of the converter is proportional to the product of the voltage and the duty cycle, which is the basis for current limiting. If the product value suddenly increases beyond a limit value, it is considered to be overloaded or shorted, at which point protection is initiated. The mode has the advantages of low cost and complete cancellation of the cost of the operational amplifier circuit, the comparison circuit and the sampling resistor circuit. The defects are inaccurate limit value and poor consistency.
For high power converter outputs, the converter circuit also includes a temperature detection circuit and a fan control circuit. Because the high-power converter generates a large amount of heat, the temperature of the high-power converter needs to be reduced by a fan. The mcu circuit connects the temperature detection circuit and the fan control circuit. The temperature detection circuit includes a temperature sensor. The fan control circuit comprises an electric fan. And when the mcu circuit detects that the temperature of the radiator is higher than the verification value, starting the electric fan to cool. If the output power is not reduced, the output power is reduced and the alarm is given. The low-power converter circuit does not need a temperature detection circuit and a fan control circuit, and can radiate heat by the shell. See fig. 6.
An adapter is connected with the motor box or the converter through a large wire and exchanges data with the motor box or the converter in a two-way mode according to a communication protocol.
The adapter includes an mcu circuit, a functional circuit, a communication circuit, and a functional socket circuit.
The mcu circuit comprises an mcu chip and is connected with the functional circuit and the communication circuit. The functional socket circuit is connected with the functional circuit and the communication circuit.
The functional circuit comprises a combined handle circuit, a combined switch circuit, a voice broadcasting circuit, an electronic insurance circuit, a lamp control circuit, an instrument display circuit and a man-machine interaction circuit. The 7 sub-circuits of the functional circuit are all connected to the mcu circuit.
The functional socket circuit comprises a single-row socket or/and a double-row socket corresponding to the functional circuit and is connected with the functional circuit. The single-row socket or/and the double-row socket are respectively connected with the front electric appliance.
The functional socket circuit comprises a single-row or double-row large-line socket. The large wire socket is connected with a large wire. The large wire comprises a communication wire, the front end of the communication wire is connected with the adapter, and the rear end of the communication wire is connected with the converter or the motor box.
The voice broadcasting circuit comprises a voice chip circuit and a power amplifier circuit, wherein the voice chip circuit is connected with the power amplifier circuit, and the power amplifier circuit is connected with a loudspeaker. The voice chip circuit is connected with the mcu circuit and is used for playing parameters (including fault information) of the electric vehicle and sounds corresponding to operation.
The electronic insurance circuit is connected with the mcu circuit. The electronic safety circuit comprises an electronic switch circuit, a sampling resistor circuit and a comparison circuit. The sampling resistor circuit is connected with the comparison circuit, and the mcu circuit is connected with the electronic switch circuit and the comparison circuit. The electronic safety circuit monitors the current of the whole car or the front electric appliance, and cuts off the power supply if the current is excessive, thereby protecting the related electric appliance.
The lamp control circuit is connected with the mcu circuit. The lamp control circuit is connected with the combined handle circuit, the combined switch circuit, the electronic insurance circuit and the instrument display circuit and used for controlling and displaying the state of the electric vehicle lamp. The lamp control circuit also comprises a flash circuit. The flash circuit comprises an electronic switch tube and is connected with the mcu circuit.
The instrument display circuit is connected with the mcu circuit and is used for displaying the state and parameters of the vehicle.
The man-machine interaction circuit is connected with the mcu circuit and used for the car owner to operate the on-off and anti-theft of the electric car. Including remote control, cell phone APP, or NFC card's associated circuitry.
The adapter is connected with the working power supply circuit of the motor box or the converter by the communication wire and controls the switch of the working power supply circuit. The working principle is shown in Chinese patent CN201822156710X. Therefore, the working states of the motor box and the controller are controlled by the adapter, and the remote controller, the mobile phone APP or the NFC card can be used for completing the on-off of the electric system of the electric vehicle without a special switch for on-off, such as an electric door lock.
A converter includes the motor case and its converter circuitry.
One end of the converter is connected with the large wire, data are exchanged with the adapter in a two-way mode through the large wire according to a communication protocol, the other end of the converter is connected with the wire harness or the communication wire, and the converter is connected with the controller through the wire harness or the communication wire and transmits signals in a two-way mode.
The wire harness comprises a single or multiple combined signal wires of a rotating handle signal, a brake signal, a locking wire, a reversing wire, a third gear, a cruising wire, a P gear, an anti-theft lock motor, one-key repair, soft and hard starting, rated voltage switching, motor learning, a linear speed of the motor, a positive power supply electrode and a negative power supply electrode.
The model that the converter had still includes tail lamp control circuit to connect the tail lamp.
The converter is characterized by also comprising a foot brake detection circuit and being connected with a foot brake switch. A small-sized electric vehicle foot-less brake detection circuit.
The converter has a model, and in order to reduce the cost of the controller, the wire harness or the communication wire also comprises a working power supply output wire for providing primary power for the controller. I.e. the controller may eliminate its own primary power circuit, typically generating 15V.
And one end of the large wire is connected with the motor box or the converter, and the other end of the large wire is connected with the adapter.
The large line comprises a communication line. The motor box or the converter and the adapter exchange data bidirectionally according to a communication protocol through the large line.
The large line comprises the output line of the converter circuit and is used for providing power for the front electric appliance. Typically a cart 24V cart 12V.
The simplest of the large line types is that only 4 lines are used for the power line, the output line of the converter circuit, the ground line and the communication line, and only 3 lines are used for grounding the negative electrode.
For the application of the adapter for centralized control of tail lights, the large line also includes a non-communication line. Such as night light wire, left turn light wire, right turn light wire, reversing light wire, etc., and brake light wire.
And aiming at the application of the adapter to control the tail lamp according to a communication protocol, the front end and the rear end of the large wire are respectively provided with 1 plug.
A controller connected to the motor case or the converter by a wire harness or communication, and transmitting signals bi-directionally.
The wire harness connection comprises a single or multiple combined signals of a rotating handle signal, a brake signal, a locking wire, a reversing, a third gear, a cruising, a P gear, an anti-theft lock motor, one-key repair, soft and hard starting, rated voltage switching, motor learning, a linear speed of the motor, a positive electrode of a power supply and a negative electrode of the power supply.
The communication connection comprises a communication line, a power anode and a power cathode. The number of wires of the communication line is different according to the different communication modes, and the simplest one is a single-wire half-duplex communication mode, and only 1 wire is needed. The controller includes an mcu circuit and a communication circuit. The communication circuit is connected with the motor box or the converter through the communication wire, data are transmitted bidirectionally according to a communication protocol, the wire harness is replaced by the communication wire, and therefore cost is reduced and reliability is improved.
In order to save the cost of the primary power supply circuit of the controller, the wire harness connection or communication connection further comprises a working power supply output wire for providing primary power supply for the controller. The working power supply output line provides 10-18V power supply. The controller may eliminate its own primary power circuit, typically producing 15V.
The controller comprises an mcu circuit and a motor control circuit. The mcu circuit is connected with the motor control circuit. The motor control circuit comprises a three-phase bridge arm upper and lower motor phase line driving circuit, a three-phase bridge arm upper and lower electronic switch tube circuit, a motor rotor position sensor circuit, a sampling resistor circuit, a comparator circuit and an operational amplifier circuit. This is the category of conventional motor control circuits.
The control signals required to be input by the controller are collected and processed by the adapter and then transmitted to the motor box or the converter through the large wire according to a communication protocol, and then transmitted after being processed by the motor box or the converter.
The internal parameters and fault information which the controller needs to output are processed by the motor box or the converter and then transmitted to the adapter according to a communication protocol through the large line.
A tail light is connected to the motor box or the converter and is connected to the adapter through the large wire.
The tail lamp includes lamp body, plug wire and plug. The plug wire is connected with the lamp body and the plug. The plug is connected with the motor box or the converter.
The lamp body includes a tail lamp assembly. The tail lamp assembly comprises a night lamp, a left steering lamp, a right steering lamp, a brake lamp, a reversing lamp and/or a fog lamp. The ground wire or the power wire of the tail lamp assembly is shared. The outgoing wires of the tail lamp assembly are plugged into the plug together.
The tail lamp is divided into an integrated tail lamp and a split tail lamp. The tail light assembly of the integrated tail light is placed in a light body. Steering lamps of the split tail lamp are respectively arranged in 2 lamp bodies.
The types of the tail lamps are classified into a common-positive mode and a common-ground mode. The common positive mode is that positive pole outgoing lines of the tail lamp assembly are all connected with 1 positive pole line (called negative control tail lamp in the industry), and the common ground mode is that negative pole outgoing lines of the tail lamp assembly are all connected with 1 negative pole line (called positive control tail lamp in the industry).
The switch information of the tail lamp is transmitted to the motor box or the converter through the large wire according to a communication protocol by the adapter.
An electric vehicle mounted with the motor box, or the adapter, or the converter, or the large wire, or the controller, or the tail lamp.
The invention has the following effects:
the connection between the motor box and the controller is increased by a communication mode, and the motor box and the controller are connected by a communication line instead of an original wire harness connection line. If a single-wire half duplex communication mode is used (LIN or single-wire UART communication), 1 wire replaces more than ten wires. Therefore, the wiring is simple, the wiring is basically free from errors, the cost is low, the fault points are few, and the reliability is high.
The communication follow-up switch circuit of the motor box or the converter is matched with the man-machine operation of the converter, and the electric system (comprising the motor box or the converter and the controller) of the electric vehicle is started and shut down by means of a remote controller, a mobile phone APP or a communication wire for an NFC card, so that a special switch for starting and shutting down such as an electric door lock is not needed, and the electric vehicle is also an innovation in the industry.
According to the intermittent overload protection mode, the power control and the overcurrent protection of the output of the converter circuit are realized according to the voltage of the input power supply and the value of the PWM duty ratio, the cost of a resistor sampling circuit, an operational amplifier circuit, a current acquisition circuit and a comparison circuit of the traditional converter is saved, and meanwhile, the reliability is improved. As the component reduction failure rate must be reduced. This is also an innovation.
The motor box or the converter provides working power for the controller, saves the cost of a primary power supply circuit of the controller, and is also an initial source in the industry.
In addition, the motor box is added with a converter function, and the mcu chip, the power circuit, the communication circuit, the storage battery voltage detection circuit, the shell, the production procedure and the inspection procedure of the common motor box are used for saving materials and labor cost, and meanwhile, the number of installation spaces is 1, the number of wiring is 1, the number of production procedures is 1, the number of component power consumption is 1, and the number of fault points is 1. The novelty and the practicability of the motor box are highlighted.
Drawings
Fig. 1: application system circuit of motor box of split tail lamp of large-sized electric vehicle.
Fig. 2: application system circuit of small-sized electric vehicle integrated tail lamp motor box.
Fig. 3: a motor box circuit.
Fig. 4: a converter circuit.
Fig. 5: current limiting and protecting circuit for direct control mode of converter.
Fig. 6: and a converter temperature control circuit.
Detailed Description
Fig. 1: application system circuit of motor box of split tail lamp of large-sized electric vehicle. The front electric appliance is directly connected with the adapter, the signals are transmitted to the motor box (or the converter) through a large wire according to a communication protocol after being processed, and then the motor box (or the converter) is respectively provided for the controller, the left tail lamp and the right tail lamp. The switch information of the left tail lamp and the right tail lamp is transmitted by the adapter in a centralized way through the communication line. The foot brake signal, the controller, and the signals needed to be transmitted by the motor box or the converter are transmitted to the adapter through the communication wire. The adapter can be externally connected with an instrument and also can have the instrument function. The controller parameters and the fault information thereof can also be broadcasted by voice.
The input power source of the converter is derived from the controller. And in the controller, the input power supply is directly connected with the anode and the cathode of the storage battery. The output of the converter powers the left and right taillights. Meanwhile, power is supplied to the front electric appliance through a large wire.
Fig. 2: application system circuit of small-sized electric vehicle integrated tail lamp motor box. The front electric appliance is directly connected with the adapter, the signals are transmitted to the motor box (or the converter) through a large wire according to a communication protocol after being processed, and then the motor box (or the converter) is respectively transmitted to the controller and the tail lamp. The switch information of the tail lamp is transmitted from the adapter through the communication line. The controller, and the motor box or the converter need the outgoing signal, and then transmit to the adapter through the communication line. The adapter can be externally connected with an instrument and also can have the instrument function. The controller parameters and the fault information thereof can also be broadcasted by voice.
The input power source of the converter is derived from the controller. And in the controller, the input power supply is directly connected with the anode and the cathode of the storage battery. The output of the converter powers the taillight. Meanwhile, power is supplied to the front electric appliance through a large wire.
Fig. 3: a motor box circuit.
The motor box circuit is divided into 4 large blocks. The Mcu circuit is the core of the motor box and comprises an mcu chip, and is called a singlechip in the industry. The intelligent chip is programmed by software to realize related algorithm and control.
The main technical parameters considered for selecting the mcu chip are: the parameters such as the running speed, the temperature range, the number of GPIO, the FLASH size, the RAM size, the mode of an external communication port and the like are considered. At present, a plurality of singlechips in the market can meet the requirement, and a plurality of brands of technologies of manufacturers such as Microchip, freescale, ST, infineon, cypress and the like are available. But there are many domestic brands at present.
The communication circuit mainly completes communication with the adapter. The communication modes are as follows: uart, lin, can, i2c, 485, gpio analog communications, etc. In low-end products such as electric bicycles, electric motorcycles, electric tricycles and the like, uart, i2c and gpio analog communication are generally selected. In the application of high-end products such as electric automobiles, electric patrol cars, electric sightseeing cars, electric fire-fighting cars and the like, 485, lin and can communication is generally selected. The specific circuitry varies depending on the communication mode.
The uart, i2c and gpio analog communication ports are directly connected. However, the communication is divided into a master communication line and a slave communication line, and a pull-up resistor is generally required on a module communication line of the master communication. The present invention recommends using the adapter as the master module (master) and the motor box as the slave module (slave).
Lin, i2c and 485 communication modes need to be additionally provided with a communication driving chip or a driving circuit. The types of the chips are numerous, and the chips can be found on professional websites. In this case, the communication circuit needs to design these communication driving chips or driving circuits. The specific circuit is shown in the data sheet of the related chip. The driving chip of the communication mode is integrated in some mcu chips, and at the moment, the communication circuit is not required to be added with any component, and the communication wires are directly led out.
The controller circuit is responsible for interaction with the controller. The interaction mode is divided into 2: wire harness mode, communication mode.
Harness mode wires are numerous, including: the device comprises a rotating handle signal, a brake signal, a lock outgoing line, a reversing, a third gear, a cruising, a P gear, an anti-theft lock motor, one-key repair, soft and hard starting, rated voltage switching, motor learning, a linear speed of the motor, a positive electrode of a power supply, a negative electrode of the power supply and a single or multiple combined signals of a working power supply output line. The linear speed of the motor, the positive electrode of the power supply and the negative electrode of the power supply are output signal lines of the controller, and other signal lines are output by the motor box or the converter and are used for controlling the controller. The working power output line is a primary power supply of the motor box or the converter to the controller, so that the cost of the working power output line is saved.
The communication mode has few wires, including: a power positive line, a power negative line, a communication line and a working power output line. The communication mode is single-wire half duplex, and can be realized by using a GPIO pin or a UART, and 1 wire. The working power supply output line selects 15V output and directly transmits power to the controller. The motor box or the converter and the on-off of the controller are completely controlled by the adapter through a communication line, and are remotely operated by a remote controller, a mobile phone APP or an NFC card.
The tail lamp control circuit is connected with the tail lamp, the switch of the tail lamp control circuit is transmitted from the adapter through the communication line, and the motor box or the adapter is decoded and then is given. The tail light control circuit cancels if the tail lights are controlled centrally by the adapter. The adapter controls the tail lamp through a plurality of special lines.
The present invention increases the converter circuit portion compared to the previous patent.
The converter circuit is responsible for converting the battery voltage through DC/DC conversion to the voltage required by the electric vehicle, typically 12V and 24V.
The converter circuit comprises a PWM driving circuit, an electronic switching circuit, an inductance circuit, a follow current circuit, a filter circuit and a voltage acquisition circuit.
Mcu the chip is provided with a PWM module. The PWM driving circuit is composed of a triode, a resistor, a bootstrap capacitor and a mos transistor G-pole miller capacitor, so that the cost is saved. The electronic switching circuit selects NMOS tube 75NF75. The inductance circuit selects 12uH magnetic ring inductance, and the PWM period selects 16KHz. The freewheel circuit selects 20100 freewheel diode. The filter circuit selects 470uF/25V electrolytic capacitor. The voltage acquisition circuit selects a 10K/5.1K voltage division circuit. This is the main loop of the converter circuit.
Fig. 5: the current limiting and protecting circuit in the direct control mode of the converter is one part of the converter circuit and consists of a resistor sampling circuit, an operational amplifier circuit, a current acquisition circuit and a comparison circuit. After the signal of the resistance sampling circuit is amplified by the operational amplifier circuit, the signal is connected with the ADC input end of the mcu chip after passing through the current acquisition circuit to obtain a current value. The signal of the resistance sampling circuit is input to the comparison circuit and then connected with the interrupt input pin of the mcu chip, so that overcurrent or short-circuit protection is realized. The method is realized by selecting a 0.010mR sampling resistor, an LM358 operational amplifier and a comparator.
Fig. 6: is a converter temperature control circuit and is also part of a converter circuit. Is used for a high-power converter. The circuit also includes a temperature detection circuit and a fan control circuit. And when the mcu circuit detects that the temperature of the radiator is higher than the verification value, starting the electric fan to cool. If the output power is not reduced, the output power is reduced and the alarm is given. The low-power converter circuit does not need a temperature detection circuit and a fan control circuit, and can radiate heat by the shell.
The above embodiments and description are only illustrative of the principles of the present invention and of one of the examples, and various changes and modifications can be made in accordance with this principles, which are intended to fall within the scope of the present invention.

Claims (10)

1. A motor box, characterized in that: the motor box comprises an mcu circuit, a communication circuit, a controller circuit and a converter circuit;
the mcu circuit is connected with the communication circuit, the controller circuit and the converter circuit;
the mcu circuit includes an mcu chip;
the converter circuit converts the voltage of the storage battery into a verification safety voltage to supply power for electric vehicle electrical components;
the converter circuit comprises a PWM driving circuit, an electronic switching circuit, an inductance circuit, a follow current circuit, a filter circuit and a voltage acquisition circuit;
the mcu chip comprises an internal PWM module, and an output pin of the mcu circuit is connected with the PWM driving circuit and the voltage acquisition circuit; the electronic switching circuit is connected with the PWM driving circuit and the inductance circuit; the follow current circuit is connected with the inductance circuit; the filter circuit is connected with the inductance circuit and the follow current circuit;
the electronic switching circuit comprises an electronic switching tube;
the PWM driving circuit comprises a driving circuit required by the control electrode of the electronic switching tube, wherein some of the driving circuit consists of a resistor, a capacitor and a triode, and other driving circuits are completed by a special driving chip;
The inductance circuit comprises an inductance;
the freewheel circuit includes a freewheel diode;
the filter circuit comprises an electrolytic capacitor;
the voltage acquisition circuit comprises a resistor voltage division circuit;
the communication circuit is connected with the adapter through a large wire; the large line comprises a communication line; the motor box is connected with the adapter through the large wire and exchanges data bidirectionally according to a communication protocol;
the controller circuit is connected with the controller; the motor box transmits signals required by the controller from the adapter according to a communication protocol through the large wire, and outputs the signals to the controller after being converted by the controller circuit; the motor box converts the signals output by the controller into signals through the controller circuit and sends the signals to the adapter according to a communication protocol through the large wire;
the motor box is provided with a model which also comprises a foot brake detection circuit and is connected with a foot brake switch; the mcu circuit is connected with the foot brake detection circuit;
the motor box is characterized by also comprising a tail lamp control circuit and a tail lamp; the mcu circuit is connected with the tail lamp control circuit; the tail lamp signal of the adapter is transmitted to the motor box through the large wire according to a communication protocol, and then the tail lamp is controlled through the tail lamp circuit;
The motor box is provided with a model which comprises a communication follow-up switch circuit; the communication follow-up switch circuit is connected with the communication line and the power circuit, and is used for switching the working power supply of the motor box according to the signal of the communication line.
2. A motor cartridge as claimed in claim 1, wherein: the controller circuit comprises a motor communication circuit; the motor communication circuit is connected with the controller through a motor wire;
the motor wire comprises a communication wire;
the motor box bidirectionally exchanges data according to a communication protocol and the controller through the motor wire;
the communication wire replaces the wiring harness connecting wire of the existing motor box, and the wiring harness connecting wire comprises a single or multiple combined signal wire of a rotating handle signal, a brake signal, a locking wire, a reversing wire, a three-gear wire, a cruising wire, a P-gear wire, an anti-theft lock motor, one-key repair wire, soft and hard starting wire, rated voltage switching wire, motor learning wire, a wire passing speed of the motor wire and a wire passing speed of the motor wire.
3. A motor cartridge as claimed in claim 1, wherein: the connecting lines between the motor box and the controller are concentrated into 1 socket;
the connection line is divided into a communication mode and a wire harness mode;
the connection line of the communication mode comprises a power positive line, a power negative line and a communication line;
The wiring of the wiring harness mode comprises a single or multiple combined signal wires of a rotating handle signal, a brake signal, a locking wire, a reversing wire, a third gear, cruising wire, a P gear, an anti-theft lock motor, one-key repair, soft and hard starting, rated voltage switching, motor learning, a linear speed of the motor, a positive electrode of a power supply and a negative electrode of the power supply;
the motor box is provided with a model, and in order to reduce the cost of the controller, the connecting wire also comprises a working power supply output wire for providing a primary power supply for the controller;
the motor box comprises a shell and a PCB circuit board; the shell comprises a bottom shell; the bottom shell is used for fixing one side of the PCB; the motor box is waterproof and dustproof, the plug-in components and the socket of PCB circuit board face down or incline downwards, and the drain pan is upwards or incline upwards.
4. A motor cartridge as claimed in claim 1, wherein: the converter circuit includes an overload protection circuit; the overload protection circuit is divided into a direct control mode and an indirect control mode;
the direct control mode comprises a resistance sampling circuit, an operational amplifier circuit, a current acquisition circuit and a comparison circuit; the mcu circuit is connected with the current acquisition circuit; the operational amplifier circuit is connected with the current acquisition circuit and the resistance sampling circuit; the comparison circuit is connected with the mcu circuit and the resistance sampling circuit; the operational amplifier circuit comprises an operational amplifier chip; the mcu chip comprises an internal operational amplifier module, so that the operational amplifier circuit can be omitted; the comparison circuit includes a comparator; if some of the mcu chips contain an internal comparator module, the comparison circuit can be omitted; the resistance sampling circuit comprises a sampling resistor and a signal output filter circuit; the mcu circuit limits current according to the output value of the operational amplifier circuit; the mcu circuit realizes overload or short-circuit protection according to the output of the comparison circuit;
The intermittent control mode comprises an input power supply voltage acquisition circuit; the mcu circuit is connected with the input power supply voltage acquisition circuit; the input power supply voltage acquisition circuit comprises a voltage dividing resistor circuit and is used for adjusting the input voltage range from a power supply signal to the ADC channel of the mcu chip; the mcu chip realizes power control and overcurrent protection of the output of the converter circuit according to the voltage of an input power supply and the value of a PWM duty ratio;
for high power converter outputs, the converter circuit further comprises a temperature detection circuit and a fan control circuit; the mcu circuit is connected with the temperature detection circuit and the fan control circuit; the temperature detection circuit comprises a temperature sensor; the fan control circuit comprises an electric fan.
5. An adapter connected to the motor case according to any one of claims 1 to 4 or the converter according to claim 6 by a large line and exchanging data with the motor case or the converter in both directions according to a communication protocol;
the adapter comprises an mcu circuit, a functional circuit, a communication circuit and a functional socket circuit;
the mcu circuit comprises an mcu chip and is connected with the functional circuit and the communication circuit; the functional socket circuit is connected with the functional circuit and the communication circuit;
The functional circuit comprises a combined handle circuit, a combined switch circuit, a voice broadcasting circuit, an electronic insurance circuit, a lamp control circuit, an instrument display circuit and a man-machine interaction circuit; the 7 sub-circuits of the functional circuit are all connected with the mcu circuit;
the functional socket circuit comprises a single-row socket or/and a double-row socket corresponding to the functional circuit and is connected with the functional circuit; the single-row socket or/and the double-row socket are respectively connected with the front electric appliance;
the functional socket circuit comprises a single-row or double-row large-line socket; the large wire socket is connected with a large wire; the large wire comprises a communication wire, the front end of the communication wire is connected with the adapter, and the rear end of the communication wire is connected with the converter or the motor box;
the voice broadcasting circuit comprises a voice chip circuit and a power amplifier circuit, wherein the voice chip circuit is connected with the power amplifier circuit, and the power amplifier circuit is connected with a loudspeaker; the voice chip circuit is connected with the mcu circuit and is used for playing parameters (including fault information) of the electric vehicle and sounds corresponding to operation;
the electronic insurance circuit is connected with the mcu circuit; the electronic safety circuit comprises an electronic switch circuit, a sampling resistor circuit and a comparison circuit; the sampling resistor circuit is connected with the comparison circuit, and the mcu circuit is connected with the electronic switch circuit and the comparison circuit; the electronic insurance circuit monitors the current of the whole car or the front electric appliance, and cuts off the power supply if the current is excessive, thereby protecting the related electric appliances;
The lamp control circuit is connected with the mcu circuit; the lamp control circuit is connected with the combined handle circuit, the combined switch circuit, the electronic insurance circuit and the instrument display circuit and used for controlling and displaying the state of the electric vehicle lamp; the lamp control circuit also comprises a flash circuit; the flash circuit comprises an electronic switching tube and is connected with the mcu circuit;
the instrument display circuit is connected with the mcu circuit and is used for displaying the state and parameters of the vehicle;
the man-machine interaction circuit is connected with the mcu circuit and is used for the turning on/off and anti-theft operation of an electric vehicle by a vehicle owner;
the adapter is connected with the working power supply circuit of the motor box or the converter by the communication wire and controls the switch of the working power supply circuit.
6. A converter, characterized by: the converter comprises the motor case of any one of claims 1 to 4 and a converter circuit thereof;
one end of the converter is connected with a large wire, data is exchanged with the adapter in a two-way through the large wire according to a communication protocol, the other end of the converter is connected with a wire harness or a communication wire, and the converter is connected with the controller through the wire harness or the communication wire and transmits signals in a two-way;
the wire harness comprises a single or multiple combined signal wires of a rotating handle signal, a brake signal, a locking wire, a reversing wire, a third gear, a cruising wire, a P gear, an anti-theft lock motor, one-key repair, soft and hard starting, rated voltage switching, motor learning, a linear speed of the motor, a positive power supply electrode and a negative power supply electrode;
The model of the converter also comprises the tail lamp control circuit and is connected with a tail lamp;
the converter is characterized by also comprising a foot brake detection circuit and a foot brake switch, wherein the foot brake detection circuit is connected with the foot brake switch;
the converter has a model, and in order to reduce the cost of the controller, the wire harness or the communication wire also comprises a working power supply output wire for providing primary power for the controller.
7. A large wire, characterized in that: one end of the large wire is connected with the motor box of any one of claims 1 to 4 or the converter of claim 6, and the other end is connected with the adapter of claim 5;
the large line comprises a communication line; the motor box or the converter and the adapter exchange data bidirectionally according to a communication protocol through the large line;
the large line comprises the output line of the converter circuit and is used for providing power for the front electric appliance;
the simplest one of the large line types is that only 4 lines are provided, namely a power line, a converter circuit output line, a ground line and a communication line, and only 3 lines are provided when the negative electrode is grounded;
for the application of the adapter for centralized control of tail lights, the large line also comprises a non-communication line;
and aiming at the application of the adapter to control the tail lamp according to a communication protocol, the front end and the rear end of the large wire are respectively provided with 1 plug.
8. A controller, characterized by: the controller is connected to the motor case according to any one of claims 1 to 4 or the converter according to claim 6 by a wire harness or communication, and transmits signals bi-directionally;
the wire harness connection comprises a single or multiple combined signals of a rotating handle signal, a brake signal, a locking wire, a reversing, a third gear, a cruising, a P gear, an anti-theft lock motor, one-key repair, soft and hard starting, rated voltage switching, motor learning, a linear speed of the motor, a positive electrode of a power supply and a negative electrode of the power supply;
the communication connection comprises a communication line, a power anode and a power cathode; the number of the wires of the communication wire is different according to different communication modes, and the simplest one is a single-wire half-duplex communication mode, and only 1 wire is needed; the controller comprises an mcu circuit and a communication circuit; the communication circuit is connected with the motor box or the converter through the communication line and is used for bidirectionally transmitting data according to a communication protocol;
in order to save the cost of the primary power supply circuit of the controller, the wire harness connection or communication connection further comprises a working power supply output wire;
the controller comprises an mcu circuit and a motor control circuit; the mcu circuit is connected with the motor control circuit; the motor control circuit comprises a three-phase bridge arm upper and lower motor phase line driving circuit, a three-phase bridge arm upper and lower electronic switching tube circuit, a motor rotor position sensor circuit, a sampling resistor circuit, a comparator circuit and an operational amplifier circuit;
The control signals required to be input by the controller are collected and processed by the adapter and then transmitted to the motor box or the converter through the large wire according to a communication protocol, and then transmitted after being processed by the motor box or the converter;
the internal parameters and fault information which the controller needs to output are processed by the motor box or the converter and then transmitted to the adapter according to a communication protocol through the large line.
9. A taillight, characterized in that: the tail light is connected to the motor case according to any one of claims 1 to 4 or the converter according to claim 6, and is connected to the adapter through the large wire;
the tail lamp comprises a lamp body, a plug wire and a plug; the plug wire is connected with the lamp body and the plug; the plug is connected with the motor box or the converter;
the lamp body comprises a tail lamp assembly; the tail lamp assembly comprises a night lamp, a left steering lamp, a right steering lamp, a brake lamp, a reversing lamp and/or a fog lamp; the ground wire or the power wire of the tail lamp assembly is shared; the outgoing wires of the tail lamp assembly are plugged into the plug together;
the tail lamp is divided into an integrated tail lamp and a split tail lamp; the tail lamp component of the integrated tail lamp is arranged in a lamp body; the steering lamps of the split tail lamps are respectively arranged in 2 lamp bodies;
The types of the tail lamps are divided into a common-positive mode and a common-ground mode; the common positive mode is that positive electrode outgoing lines of the tail lamp assembly are all connected with 1 positive electrode line, and the common ground mode is that negative electrode outgoing lines of the tail lamp assembly are all connected with 1 negative electrode line;
the switch information of the tail lamp is transmitted to the motor box or the converter through the large wire according to a communication protocol by the adapter.
10. An electric vehicle, characterized in that: said electric vehicle is fitted with a motor box according to any one of claims 1 to 4, or an adapter according to claim 5, or a converter according to claim 6, or a wire according to claim 7, or a controller according to claim 8, or a tail light according to claim 9.
CN202210308343.9A 2022-03-28 2022-03-28 Motor box and adapter, converter, controller, main wire, tail lamp and electric vehicle Pending CN116853142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210308343.9A CN116853142A (en) 2022-03-28 2022-03-28 Motor box and adapter, converter, controller, main wire, tail lamp and electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210308343.9A CN116853142A (en) 2022-03-28 2022-03-28 Motor box and adapter, converter, controller, main wire, tail lamp and electric vehicle

Publications (1)

Publication Number Publication Date
CN116853142A true CN116853142A (en) 2023-10-10

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ID=88225473

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210308343.9A Pending CN116853142A (en) 2022-03-28 2022-03-28 Motor box and adapter, converter, controller, main wire, tail lamp and electric vehicle

Country Status (1)

Country Link
CN (1) CN116853142A (en)

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