CN215705694U - Vehicle-mounted energy supply system and electric automobile - Google Patents
Vehicle-mounted energy supply system and electric automobile Download PDFInfo
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- CN215705694U CN215705694U CN202121684114.4U CN202121684114U CN215705694U CN 215705694 U CN215705694 U CN 215705694U CN 202121684114 U CN202121684114 U CN 202121684114U CN 215705694 U CN215705694 U CN 215705694U
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Abstract
The utility model discloses a vehicle-mounted energy supply system and an electric automobile, wherein the electric automobile comprises an electric motor, and the vehicle-mounted energy supply system comprises: the power battery pack is connected with the motor and is used for supplying electric energy to the motor to drive the motor to work; the output end of the power unit is respectively connected with the motor and the power battery pack and used for providing electric energy for the motor and the power battery pack so as to drive the motor to work and charge the power battery pack; the input ends of the switching circuit are respectively connected with the output end of the power battery pack and the output end of the power unit, and the output end of the switching circuit is connected with the motor; the main controller is connected with the controlled end of the switch circuit and is used for controlling the switch circuit to work so as to control the power battery pack and/or the power unit to be electrically connected with the motor; the utility model can improve the practicability and the energy utilization rate of the automobile.
Description
Technical Field
The utility model relates to the technical field of automobile power supply, in particular to a vehicle-mounted energy supply system and an electric automobile.
Background
At present, a common energy vehicle can only provide an alternating current power supply of 220VAC or 380VAC through a diesel generator set, the requirements of various vehicle loads on an energy system cannot be met, meanwhile, the change of the power of the common energy vehicle can only be realized by increasing or reducing the power of the diesel generator set, and the requirement on megawatt high power cannot be basically met.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a vehicle-mounted energy supply system, aiming at improving the practicability and the energy utilization rate of an automobile.
In order to achieve the above object, the present invention provides a vehicle-mounted energy supply system applied to an electric vehicle, wherein the electric vehicle includes an electric motor, and the vehicle-mounted energy supply system includes:
the output end of the power battery pack is connected with the motor, and the power battery pack is used for supplying electric energy to the motor to drive the motor to work;
the output end of the power unit is respectively connected with the motor and the power battery pack, and the power unit is used for providing electric energy for the motor and the power battery pack so as to drive the motor to work and charge the power battery pack;
the input ends of the switch circuits are correspondingly connected with the output ends of the power battery packs and the output ends of the power units one by one, and the output ends of the switch circuits are connected with the motors;
and the control end of the main controller is connected with the controlled end of the switch circuit, and the main controller is used for controlling the switch circuit to work so as to control the power battery pack and/or the power unit to be electrically connected with the motor.
Preferably, the vehicle-mounted energy supply system further includes:
and the detection end of the energy management system is connected with the power battery pack, and the energy management system is used for detecting the electric quantity information of the power battery pack.
Preferably, the energy management system comprises:
the detection end of the battery electric quantity detection circuit is connected with the power battery pack, the output end of the battery electric quantity detection circuit is connected with the main controller, and the battery electric quantity detection circuit is used for detecting the battery electric quantity of the power battery pack and outputting a corresponding electric quantity detection signal;
the main controller is also used for controlling the switch circuit to work according to the electric quantity detection signal so as to control the power battery pack and/or the power unit to be electrically connected with the motor.
Preferably, the master controller is integrated within the energy management system.
Preferably, the switch circuit includes a first switch and a second switch, the first switch is serially connected between the power unit and the motor, a controlled end of the first switch is connected with a control end of the main controller, the second switch is serially connected between the power battery pack and the motor, and a controlled end of the second switch is connected with a control end of the main controller.
Preferably, the power unit includes:
the output end of the range extender is connected with the input end of the switch circuit, and the range extender is used for providing electric energy for the motor and the power battery pack so as to drive the motor to work and charge the power battery pack;
the controlled end of the driving module is connected with the control end of the main controller, the control end of the driving module is connected with the controlled end of the range extender, and the driving module is used for controlling the range extender to start/stop according to a control signal of the main controller;
the main controller is also used for outputting a control signal to the driving module according to the electric quantity detection signal;
alternatively, the power unit comprises:
the controlled end of the power take-off generator is connected with the control end of the main controller, and the power take-off generator is used for providing electric energy for the motor and the power battery pack;
the input end of the rectifying and voltage-stabilizing module is connected with the output end of the power take-off generator, the output end of the rectifying and voltage-stabilizing module is connected with the input end of the switching circuit, and the rectifying and voltage-stabilizing module is used for rectifying and stabilizing the electric energy output by the power take-off generator and then outputting the electric energy to the motor and the power battery pack through the switching circuit so as to drive the motor to work and charge the power battery pack;
the main controller is also used for controlling the power take-off generator to start/stop according to the electric quantity detection signal.
Preferably, the vehicle-mounted energy supply system further comprises an inverter, an input end of the inverter is connected with an output end of the switching circuit, and an output end of the inverter is connected with a vehicle load, and the inverter is used for converting, rectifying and stabilizing the electric energy output by the power unit and the power battery pack and outputting the electric energy to the vehicle load.
Preferably, the vehicle-mounted energy supply system further comprises a DC-DC power converter, an input end of the DC-DC power converter is connected with an output end of the switching circuit, and an output end of the DC-DC power converter is connected with a vehicle load, and is used for rectifying and stabilizing the electric energy output by the power unit and the power battery pack and outputting the electric energy to the vehicle load.
Preferably, the vehicle-mounted energy supply system further comprises a vehicle-mounted charger, an output end of the vehicle-mounted charger is connected with an input end of the switch circuit, and the vehicle-mounted charger is used for being connected with an external power supply to charge the power battery pack.
The utility model further provides an electric automobile which comprises the vehicle-mounted energy supply system.
According to the technical scheme, by arranging the power battery pack and the power unit, in the running process of a vehicle, when the electric quantity of the power battery pack is sufficient, the main controller controls the switch circuit to be communicated with the power battery pack to provide electric energy to drive the motor to work, when the electric quantity of the power battery is reduced to a preset value, the main controller controls the switch circuit to be communicated with the power unit to provide electric energy to drive the motor to work and charge the power battery pack, and when the vehicle has a high-power requirement, the controller controls the switch circuit to be simultaneously communicated with the power battery pack and the power unit to drive the motor to output in a high-power mode; the utility model improves the cruising ability of the vehicle, meets the high-power requirement of the vehicle and improves the practicability and the energy utilization rate of the vehicle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic circuit block diagram of an embodiment of a vehicle-mounted power supply system according to the present invention;
FIG. 2 is a schematic circuit diagram of an embodiment of the vehicle-mounted power supply system of the present invention;
fig. 3 is a schematic circuit diagram of another embodiment of the vehicle-mounted power supply system according to the utility model.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
70 | DC- |
| 20 | |
80 | Vehicle-mounted |
| 30 | |
31 | |
| 40 | |
32 | |
| 50 | |
33 | Power take- |
| 60 | Inverter with a |
34 | Rectifying and voltage stabilizing module |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a vehicle-mounted energy supply system, which is applied to an electric automobile, wherein an electric motor 10 is included in an electric steam generator.
At present, a common energy vehicle can only provide an alternating current power supply of 220VAC or 380VAC through a diesel generator set, the requirements of various vehicle loads on an energy system cannot be met, meanwhile, the change of the power of the common energy vehicle can only be realized by increasing or reducing the power of the diesel generator set, and the requirement on megawatt high power cannot be basically met.
To solve the above problem, referring to fig. 1 to 3, in an embodiment of the present invention, the vehicle-mounted energy supply system includes:
a power battery pack 20, wherein the output end of the power battery pack 20 is connected with the electric motor 10, and the power battery pack 20 is used for supplying electric energy to the electric motor 10 to drive the electric motor 10 to work;
the output end of the power unit 30 is respectively connected with the electric motor 10 and the power battery pack 20, and the power unit 30 is used for providing electric energy for the electric motor 10 and the power battery pack 20 to drive the electric motor 10 to work and charge the power battery pack 20;
a plurality of input ends of the switch circuit 40 are correspondingly connected with the output ends of the power battery packs 20 and the output ends of the power units 30, and the output ends of the switch circuit 40 are connected with the motors 10;
and a main controller 50, wherein a control end of the main controller 50 is connected with a controlled end of the switch circuit 40, and the main controller 50 is used for controlling the switch circuit 40 to work so as to control the power battery pack 20 and/or the power unit 30 to be electrically connected with the motor 10.
In this embodiment, both the power battery pack 20 and the power unit 30 can supply power to the motor 10, and a priority can be set between them, during the normal running of the vehicle, the main controller 50 can preferentially control the power battery pack 20 to output electric energy to power the entire vehicle, the main controller 50 can also establish communication with the battery management system of the power battery pack 20 and obtain the battery power data of the power battery pack 20, when the battery power of the power battery pack 20 is high, the main controller 50 controls the switch circuit 40 to communicate with the power battery pack 20, the power battery pack 20 supplies power to the entire vehicle, specifically to supply power to the motor 10 and the vehicle load, such as an automobile console, a horn, etc., the motor 10 converts the electric energy into mechanical energy to drive the vehicle to run, when the battery power of the power battery pack 20 is consumed and falls to a preset value, the main controller 50 controls the switch circuit 40 to communicate with the power unit 30, at this time, the main controller 50 can also communicate with a battery management system of the power battery pack 20, the battery management system can control the power battery pack 20 to stop outputting and convert into a charging mode, the power unit 30 converts chemical energy into electric energy to supply power to the whole vehicle, the electric energy is provided for the motor 10 and the vehicle load, and meanwhile, the power battery pack 20 can also be charged; when the power battery pack 20 is fully charged, the main controller 50 controls the switching circuit 40 to disconnect the power unit 30, and communicates with the battery management system of the power battery pack 20 to control the power battery pack 20 to finish the charging mode and output electric energy, and the power battery pack 20 provides energy for the whole vehicle;
when the vehicle requires the electric motor 10 to provide a large power output, the main controller 50 may control the switching circuit 40 to connect the power unit 30 and the power battery pack 20 to the electric motor 10 simultaneously, connect the power unit 30 and the power battery pack 20 in parallel, and output electric power to the electric motor 10 simultaneously, and the electric motor 10 provides electric power input from the power unit 30 and the power battery pack 20 simultaneously, compared with the case where only the power unit 30 supplies electric power or only the power battery pack 20 supplies electric power, the power unit 30 and the power battery pack 20 are connected in parallel, and then simultaneously provide electric power to the electric motor 10 (the voltage is constant, and the parallel connection may increase the input current), according to the power calculation formula, P ═ U × I, it is known that the input current of the electric motor is the sum of the power unit 30 and the power battery pack 20, so that the input power to the electric motor 10 may be increased, and the output power of the electric motor 10 may be also greatly increased, thereby meeting the requirements of vehicles on high power, such as climbing, catapult starting and the like.
According to the utility model, by arranging the power unit 30, when the electric quantity of the battery of the power battery pack 20 is insufficient, the power unit can provide energy for the whole vehicle, and meanwhile, the power unit 30 can charge the power battery pack 20 when providing the energy of the whole vehicle, so that the service life of the power battery pack 20 can be prolonged, the endurance of the vehicle can be greatly improved, the time spent by extra charging of a user can be reduced, and the utilization rate of the energy of the vehicle can be improved; the utility model can also output the power battery pack 20 and the power unit 30 in parallel, so as to meet the high-power requirement of the vehicle and improve the practicability of the vehicle; the utility model can also be used for transforming the traditional fuel oil automobile into the electric automobile, and realizes more efficient and reasonable utilization of energy, thereby realizing the purpose of reducing emission and improving the adaptability of the automobile.
Referring to fig. 1 to 3, in an embodiment of the present invention, the vehicle-mounted energy supply system further includes:
and the detection end of the energy management system is connected with the power battery pack 20, and the energy management system is used for detecting the electric quantity information of the power battery pack 20.
Referring to fig. 1 to 3, in an embodiment of the present invention, the energy management system includes:
the detection end of the battery electric quantity detection circuit is connected with the power battery pack 20, the output end of the battery electric quantity detection circuit is connected with the main controller 50, and the battery electric quantity detection circuit is used for detecting the battery electric quantity of the power battery pack 20 and outputting a corresponding electric quantity detection signal;
the main controller 50 is further configured to control the switch circuit 40 to operate according to the electric quantity detection signal, so as to control the power battery pack 20 and/or the power unit 30 to be electrically connected to the electric motor 10.
Wherein the master controller 50 is integrated within the energy management system.
In this embodiment, an energy management system is further provided, the main controller 50 is integrated into the energy management system, that is, the energy management system includes the main controller 50, and the energy management system is further provided with a battery capacity detection circuit, in addition to the battery capacity detection circuit, the energy management system may further be provided with a motor encoder, a voltage detection circuit, a temperature detection circuit, and the like, for monitoring the working states of the motor 10, the power unit 30, and the power battery pack 20 and collecting data in real time, such as the rotation speed of the motor 10, the output voltage of the power unit 30, the battery capacity and the temperature of the power battery pack 20, and the like; the battery power detection circuit may select a voltage sensor or a series-connected divider resistor to obtain voltage data Of a battery in the power battery pack 20 and output the voltage data to the main controller 50, the main controller 50 determines the power Of the battery according to the voltage data Of the battery, or select the voltage sensor and a current sensor to obtain voltage and current data Of the battery and output the voltage and current data to the main controller 50, and after receiving the voltage and current data Of the battery, the main controller 50 calculates the SOC (State Of Charge) Of the battery according to the data, thereby more accurately determining the power Of the power battery pack 20, and the energy management system may also enable the main controller 50 to establish communication with a battery management system Of the power battery pack 20 to obtain the battery data from the battery management system; the main controller 50 may be an original central processing unit in an automobile, or the main controller 50 specially configured for use in the present invention, and the main controller 50 may be a single chip microcomputer, and a person skilled in the art can analyze and write a program suitable for the present invention according to an existing battery power analysis program, a vehicle control program, and the like; when the main controller 50 detects that the battery power of the power battery pack 20 is fully charged through the battery power detection circuit, the main controller 50 controls the switch circuit 40 to connect with the power unit 30, the power unit 30 provides the energy of the whole vehicle to provide the electric energy for the motor 10 and the vehicle load, and simultaneously charges the power battery pack 20, when the main controller 50 detects that the battery power of the power battery pack 20 is fully charged through the battery power detection circuit, the main controller 50 controls the switch circuit 40 to disconnect the power unit 30, the power battery pack 20 provides the energy of the whole vehicle again, and when the power battery pack 20 is still in high power, the main controller 50 also controls the power unit 30 and the power battery pack 20 to start simultaneously, when the vehicle needs the output of high power provided by the motor 10, the main controller 50 can control the power unit 30 and the power battery pack 20 to start simultaneously and output electric energy to the motor 10 in parallel, so as to increase the input power to the motor 10, greatly increase the output power of the motor 10, and meet the requirement of high power of the vehicle; according to the utility model, through the arrangement of the energy management system, more efficient and reasonable utilization of energy is realized, so that the aim of reducing emission is fulfilled, and the adaptability of the vehicle is improved.
Referring to fig. 1 to 3, in an embodiment of the present invention, the switching circuit 40 includes a first switch and a second switch, the first switch is serially connected between the power unit 30 and the electric motor 10, a controlled terminal of the first switch is connected to a control terminal of the main controller 50, the second switch is serially connected between the power battery pack 20 and the electric motor 10, and a controlled terminal of the second switch is connected to a control terminal of the main controller 50.
In this embodiment, the electronic switches are disposed in the circuit paths of the power unit 30 and the power battery pack 20, and the energy management system controls the on/off of the electronic switches to control the output of the power unit 30 and the power battery pack 20, and during the driving of the vehicle, the energy management system controls the first switch and the second switch to communicate with the power unit 30 or the power battery pack 20, so that the energy of the entire vehicle is provided by the power unit 30 or the power battery pack 20, and meanwhile, the energy management system can control the simultaneous on/off of the first switch and the second switch to simultaneously output the power unit 30 and the power battery pack 20, so as to meet the high power requirement of the vehicle.
Referring to fig. 1 to 3, in an embodiment of the present invention, the power unit 30 includes:
the range extender 31, the output end of the range extender 31 is connected with the input end of the switching circuit 40, and the range extender 31 is used for supplying electric energy to the electric motor 10 and the power battery pack 20 so as to drive the electric motor 10 to work and charge the power battery pack 20;
the controlled end of the driving module 32 is connected with the control end of the main controller 50, the control end of the driving module 32 is connected with the controlled end of the range extender 31, and the driving module 32 is used for controlling the range extender 31 to start/stop according to the control signal of the main controller 50;
the main controller 50 is further configured to output a control signal to the driving module 32 according to the electric quantity detection signal;
alternatively, the power unit 30 includes:
a power take-off generator 33, wherein a controlled end of the power take-off generator 33 is connected with a control end of the main controller 50, and the power take-off generator 33 is used for providing electric energy for the electric motor 10 and the power battery pack 20;
the input end of the rectifying and voltage stabilizing module 34 is connected with the output end of the power takeoff generator 33, the output end of the rectifying and voltage stabilizing module 34 is connected with the input end of the switching circuit 40, and the rectifying and voltage stabilizing module 34 is used for rectifying and stabilizing the electric energy output by the power takeoff generator 33 and then outputting the electric energy to the motor 10 and the power battery pack 20 through the switching circuit 40 so as to drive the motor 10 to work and charge the power battery pack 20;
the main controller 50 is further configured to control the power take-off generator 33 to start/stop according to the electric quantity detection signal.
In this embodiment, the power unit 30 is composed of a range extender 31 and a driving module 32, when the battery power of the power battery pack 20 is consumed and reduced to a preset value, the energy management system controls the power battery pack 20 to stop outputting, and controls the driving module 32 to start, so that the driving module 32 drives the range extender 31 to work and output electric energy, provides electric energy for the motor 10 and the vehicle load, and can also charge the power battery pack 20; the range extender 31 can select a gas range extender or a gasoline range extender according to actual vehicle requirements, the gas range extender uses natural gas, the natural gas is low in price and low in cost, the single endurance is long, gas filling is inconvenient, the size is large, a gas cylinder needs to be additionally installed, the total input cost is high, the gas range extender can be used for medium and large vehicles, the gasoline range extender uses gasoline, the price of the gasoline is higher than that of the natural gas, the single endurance is short in mileage and small in size, the gas cylinder is convenient to refuel, the input cost is low, the gas range extender can be used for medium and small vehicles, chemical energy can be converted into electric energy through the range extender 31, the range extender 31 mainly comprises an engine and a motor, when the range extender 31 works, the engine converts the chemical energy into mechanical energy, and then the motor converts the mechanical energy into the electric energy to output; in the embodiment, the energy management system is in communication connection with the driving module 32 through the CAN to control the driving module 32 to control the range extender 31 to start/stop and adjust the rotating speed of the range extender 31, an electronic switch is arranged at the output end of the range extender 31, and the energy management system controls the electronic switch to be turned on/off, so as to control whether the range extender 31 supplies electric energy to the power battery pack 20 or the vehicle load; the utility model greatly improves the endurance of the vehicle by arranging the range extender 31, can finish charging the power battery pack 20 in the running process of the vehicle, serves as a mobile charging station, simultaneously enables the range extender 31 and the power battery pack 20 to output electric energy simultaneously so as to meet the high-power requirement of the vehicle, and can reduce the loading amount of the battery after the range extender 31 is additionally arranged on the vehicle, thereby reducing the cost of the whole vehicle and improving the utilization rate of social resources.
In another embodiment, the power unit 30 is composed of a power take-off generator 33 and a rectifying and voltage-stabilizing module 34, when the battery power of the power battery pack 20 is consumed and reduced to a preset value, the energy management system controls the power battery pack 20 to stop outputting, controls the power take-off generator 33 to start to generate electric energy, and then the rectifying and voltage-stabilizing module 34 converts, rectifies and stabilizes the electric energy generated by the power take-off generator 33 to output, so as to provide electric energy for the motor 10 and the vehicle load, and simultaneously can charge the power battery pack 20; the power take-off generator 33 is similar to the working principle of the range extender 31, and comprises an engine and a generator, the engine drives the generator to generate electricity, the engine converts chemical energy into mechanical energy, the generator converts the mechanical energy into electric energy to output, the electric energy output by the power take-off generator 33 is alternating current, the rectifying and voltage stabilizing module 34 can select an AC-DC power converter to convert the alternating current output by the power take-off generator 33 into direct current, and the direct current is rectified and stabilized to be output; in this embodiment, the energy management system is in communication connection with the power take-off generator 33 through the CAN to control the power take-off generator 33 to start/stop and adjust the rotation speed of the power take-off generator 33, and further to obtain the operation parameters of the power take-off generator 33, such as the rotation speed, etc., the output end of the rectifying and voltage stabilizing module 34 is provided with an electronic switch, and the energy management system controls the electronic switch to be turned on/off, so as to control whether the rectifying and voltage stabilizing module 34 supplies electric energy to the power battery pack 20 or the vehicle load.
Referring to fig. 1 to 3, in an embodiment of the present invention, the vehicle-mounted energy supply system further includes an inverter 60, an input end of the inverter 60 is connected to an output end of the switching circuit 40, and an output end of the inverter 60 is connected to a vehicle load, and is configured to convert, rectify, and stabilize the electric energy output by the power unit 30 and the power battery pack 20, and output the electric energy to the vehicle load.
In the embodiment, the power sources output by the power battery pack 20 and the power unit 30 are both direct current, so when some vehicle loads using alternating current are used, an inverter 60 needs to be added into the system, the inverter 60 can convert the direct current into alternating current and then output the alternating current, the inverter 60 can select an AC220V inverter or an AC380V inverter according to the actual requirements of the vehicle, and a plurality of inverters 60 can be installed to supply different vehicle loads, so that different requirements of the vehicle loads can be met, and the practicability of the vehicle is improved; in the present embodiment, the energy management system is connected to the inverter 60 through a CAN communication, so as to obtain the operating parameters of the inverter 60, such as the output voltage, etc., the input and output ends of the inverter 60 are provided with electronic switches, and the energy management system CAN control the on/off of the electronic switches, so as to control whether the power unit 30 and the power battery pack 20 supply power to the inverter 60, and control whether the inverter 60 supplies power to the vehicle-mounted load.
Referring to fig. 1 to 3, in an embodiment of the present invention, the vehicle-mounted energy supply system further includes a DC-DC power converter 70, an input end of the DC-DC power converter 70 is connected to an output end of the switching circuit 40, and an output end of the DC-DC power converter 70 is connected to a vehicle load, and is configured to rectify and stabilize the electric energy output by the power unit 30 and the power battery pack 20 and output the electric energy to the vehicle load.
In this embodiment, when the vehicle needs to use some vehicle loads requiring a specific voltage, a DC-DC power converter 70 may be added to the system, the DC-DC power converter 70 may select a boost DC-DC converter, a buck DC-DC converter, and a boost DC-DC converter according to the actual vehicle requirements, or a plurality of DC-DC power converters 70 may be installed to supply different vehicle loads, the DC-DC power converter 70 may convert the power output by the power unit 30 and the power battery pack 20 into the power supply voltage required by the vehicle loads and output the power supply voltage to the vehicle loads, so as to meet different requirements of the vehicle loads and improve the practicability of the vehicle; in the embodiment, the energy management system is connected to the DC-DC power converter 70 through CAN communication, so as to obtain the operating parameters of the DC-DC power converter 70, such as output voltage, etc., and the input and output terminals of the DC-DC power converter 70 are provided with electronic switches, and the energy management system controls the electronic switches to be turned on/off, so as to control whether the power unit 30 and the power battery pack 20 supply power to the DC-DC power converter 70 and whether the DC-DC power converter 70 supplies power to the vehicle-mounted load.
Referring to fig. 1 to 3, in an embodiment of the present invention, the vehicle-mounted energy supply system further includes a vehicle-mounted charger 80, an output end of the vehicle-mounted charger 80 is connected to an input end of the switch circuit 40, and the vehicle-mounted charger 80 is configured to be connected to an external power source to charge the power battery pack 20.
In this embodiment, the system is further provided with a vehicle-mounted charger 80, the vehicle-mounted charger 80 CAN be connected to the mains supply to charge the power battery pack 20, the vehicle-mounted charger 80 CAN also be connected to the energy management system of the vehicle through CAN communication, and dynamically adjusts the charging current or voltage parameter during charging according to the data provided by the energy management system to ensure that the charging current and voltage of the power battery pack 20 do not exceed the allowable values, an electronic switch CAN be further arranged at the output end of the vehicle-mounted charger 80, and the energy management system controls the on/off of the electronic switch to control whether the vehicle-mounted charger 80 charges the power battery pack 20 according to the battery power of the power battery pack 20, so that the safety of the external mains supply to charge the power battery pack 20 is improved, and the use of gasoline by the vehicle is reduced, realizes energy conservation and emission reduction.
The present invention further provides an electric vehicle, which includes the above-mentioned vehicle-mounted energy supply system, and the specific structure of the vehicle-mounted energy supply system refers to the above-mentioned embodiments.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An on-vehicle energy supply system applied to an electric vehicle including an electric motor, comprising:
the output end of the power battery pack is connected with the motor, and the power battery pack is used for supplying electric energy to the motor to drive the motor to work;
the output end of the power unit is respectively connected with the motor and the power battery pack, and the power unit is used for providing electric energy for the motor and the power battery pack so as to drive the motor to work and charge the power battery pack;
the input ends of the switch circuits are correspondingly connected with the output ends of the power battery packs and the output ends of the power units one by one, and the output ends of the switch circuits are connected with the motors;
and the control end of the main controller is connected with the controlled end of the switch circuit, and the main controller is used for controlling the switch circuit to work so as to control the power battery pack and/or the power unit to be electrically connected with the motor.
2. The vehicle-mounted power supply system according to claim 1, characterized by further comprising:
and the detection end of the energy management system is connected with the power battery pack, and the energy management system is used for detecting the electric quantity information of the power battery pack.
3. The vehicle-mounted energy supply system according to claim 2, wherein the energy management system includes:
the detection end of the battery electric quantity detection circuit is connected with the power battery pack, the output end of the battery electric quantity detection circuit is connected with the main controller, and the battery electric quantity detection circuit is used for detecting the battery electric quantity of the power battery pack and outputting a corresponding electric quantity detection signal;
the main controller is also used for controlling the switch circuit to work according to the electric quantity detection signal so as to control the power battery pack and/or the power unit to be electrically connected with the motor.
4. The on-board energy supply system of claim 2, wherein the master controller is integrated within the energy management system.
5. The vehicle-mounted energy supply system according to claim 1, wherein the switch circuit comprises a first switch and a second switch, the first switch is serially arranged between the power unit and the motor, a controlled end of the first switch is connected with a control end of the main controller, the second switch is serially arranged between the power battery pack and the motor, and a controlled end of the second switch is connected with the control end of the main controller.
6. The vehicle-mounted energy supply system according to claim 1, characterized in that the power unit includes:
the output end of the range extender is connected with the input end of the switch circuit, and the range extender is used for providing electric energy for the motor and the power battery pack so as to drive the motor to work and charge the power battery pack;
the controlled end of the driving module is connected with the control end of the main controller, the control end of the driving module is connected with the controlled end of the range extender, and the driving module is used for controlling the range extender to start/stop according to a control signal of the main controller;
the main controller is also used for outputting a control signal to the driving module according to the electric quantity detection signal;
alternatively, the power unit comprises:
the controlled end of the power take-off generator is connected with the control end of the main controller, and the power take-off generator is used for providing electric energy for the motor and the power battery pack;
the input end of the rectifying and voltage-stabilizing module is connected with the output end of the power take-off generator, the output end of the rectifying and voltage-stabilizing module is connected with the input end of the switching circuit, and the rectifying and voltage-stabilizing module is used for rectifying and stabilizing the electric energy output by the power take-off generator and then outputting the electric energy to the motor and the power battery pack through the switching circuit so as to drive the motor to work and charge the power battery pack;
the main controller is also used for controlling the power take-off generator to start/stop according to the electric quantity detection signal.
7. The vehicle-mounted energy supply system according to claim 2, further comprising an inverter, wherein an input end of the inverter is connected with an output end connected with the output end of the switching circuit, and an output end of the inverter is connected with a vehicle load, and is used for converting, rectifying and stabilizing the electric energy output by the power unit and the power battery pack and outputting the electric energy to the vehicle load.
8. The vehicle-mounted energy supply system according to claim 7, further comprising a DC-DC power converter, wherein an input end of the DC-DC power converter is connected to an output end of the switching circuit, and an output end of the DC-DC power converter is connected to a vehicle load, and is configured to rectify and stabilize the electric energy output by the power unit and the power battery pack and output the electric energy to the vehicle load.
9. The vehicle-mounted energy supply system according to claim 8, further comprising a vehicle-mounted charger, wherein an output end of the vehicle-mounted charger is connected with an input end of the switch circuit, and the vehicle-mounted charger is used for connecting an external power supply to charge the power battery pack.
10. An electric vehicle, characterized in that it comprises an on-board energy supply system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121684114.4U CN215705694U (en) | 2021-07-22 | 2021-07-22 | Vehicle-mounted energy supply system and electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121684114.4U CN215705694U (en) | 2021-07-22 | 2021-07-22 | Vehicle-mounted energy supply system and electric automobile |
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| CN215705694U true CN215705694U (en) | 2022-02-01 |
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| CN202121684114.4U Active CN215705694U (en) | 2021-07-22 | 2021-07-22 | Vehicle-mounted energy supply system and electric automobile |
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