CN216545769U - Online power supply and charging system and engineering machinery vehicle - Google Patents

Online power supply and charging system and engineering machinery vehicle Download PDF

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Publication number
CN216545769U
CN216545769U CN202121945076.3U CN202121945076U CN216545769U CN 216545769 U CN216545769 U CN 216545769U CN 202121945076 U CN202121945076 U CN 202121945076U CN 216545769 U CN216545769 U CN 216545769U
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module
battery
vehicle
motor
voltage conversion
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CN202121945076.3U
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沈得贵
孙永魁
贾志云
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Xi'an Lingchong Infinite New Energy Technology Co ltd
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Xi'an Telingchong New Energy Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application provides an online power supply charging system and an engineering mechanical vehicle, wherein an external power supply is connected to a vehicle-mounted charger module and supplies power to a motor module; the electric connection between the battery module and the motor module is switched on or off through the switch module, and the electric connection between the vehicle-mounted charger module and the battery module is switched on or off; the output voltage of the battery module is subjected to voltage conversion through the voltage conversion module and then is supplied to the motor module, and the input voltage of the voltage conversion module is subjected to voltage conversion and then is charged to the battery module, so that the current of charging and discharging of the battery module can be controlled, and the charging and discharging times of the battery module are reduced; when the motor module suddenly stops rotating, the voltage of the input current of the battery can be converted through the voltage conversion module, so that the safety of the battery is protected; meanwhile, the capacity requirement on the battery module is low, and the cost of the whole system is greatly reduced.

Description

Online power supply and charging system and engineering machinery vehicle
Technical Field
The application belongs to the technical field of vehicle power supply, and particularly relates to an online power supply charging system and an engineering mechanical vehicle.
Background
At present, a purely electric engineering mechanical vehicle generally adopts a vehicle-mounted charger to directly supply power to a motor for operation, or adopts a built-in battery to supply power to the motor for operation.
However, the allowable charging current of the built-in battery must be larger than the maximum output current of the vehicle-mounted charger, otherwise, when the motor suddenly stops, the vehicle-mounted charger cannot respond in time, so that large current is caused to charge the built-in battery, and the safety problem of the built-in battery is brought; meanwhile, the capacity requirement of the built-in battery is large because the allowable charging current of the built-in battery is high, and the cost of the built-in battery accounts for nearly 70% of the whole power system, so that the system cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide an online power supply charging system and engineering machinery vehicle, aim at solving the problem that traditional online power supply charging system security is low, with high costs.
In order to achieve the above object, in a first aspect, an embodiment of the present application provides an online power supply and charging system applied to a construction machinery vehicle, including:
a motor module configured to control a work process of the work machine vehicle;
a battery module configured to receive or discharge electric energy;
the vehicle-mounted charger module is electrically connected with the motor module and is configured to be connected with an external power supply and supply power to the motor module;
the switch module is electrically connected with the motor module, the battery module and the vehicle-mounted charger module, and is configured to be connected or disconnected with the motor module and the battery module;
and the voltage conversion module is electrically connected with the switch module, the motor module, the battery module and the vehicle-mounted charger module, and is configured to convert the output voltage of the battery module to supply power to the motor module and convert the input voltage of the voltage conversion module to charge the battery module.
In one possible implementation manner of the first aspect, the online power supply charging system further includes:
and the vehicle control unit is electrically connected with the motor module, the battery module, the vehicle-mounted charger module and the switch module, and is configured to control the working state of the motor module, control the charging and discharging process of the battery module, control the vehicle-mounted charger module to be connected to an external power supply and control the on-off state of the switch module.
In another possible embodiment of the first aspect, the battery module includes:
a power battery electrically connected with the voltage conversion module and the switch module and configured to store electric energy;
the battery management unit is electrically connected with the power battery and the voltage conversion module and is configured to control the charging and discharging process of the power battery and control the voltage conversion module to carry out voltage conversion on the input voltage or the output voltage of the power battery.
In another possible embodiment of the first aspect, the electric machine module includes:
an electric machine configured to provide power to the work machine vehicle;
and the motor controller is electrically connected with the motor, the vehicle-mounted charger module, the voltage conversion module and the switch module and is configured to control the motor to work.
In another possible implementation of the first aspect, the voltage conversion module is a bidirectional DC/DC converter.
In another possible implementation manner of the first aspect, the vehicle-mounted charger module includes a direct-contact power taking device and a non-contact power taking device.
In another possible embodiment of the first aspect, the battery module has a battery capacity of 10 to 50 KWh.
In another possible embodiment of the first aspect, the switch module comprises an electromagnetic relay.
In another possible embodiment of the first aspect, the work machine vehicle comprises a pure electric vehicle.
In a second aspect, the embodiment of the application provides an engineering machinery vehicle, and the online power supply and charging system is applied.
Compared with the prior art, the embodiment of the application has the advantages that: the online power supply and charging system is connected with an external power supply through the vehicle-mounted charger module and supplies power to the motor module; the electric connection between the battery module and the motor module is switched on or off through the switch module, and the electric connection between the vehicle-mounted charger module and the battery module is switched on or off; the output voltage of the battery module is subjected to voltage conversion through the voltage conversion module and then is supplied to the motor module, and the input voltage of the voltage conversion module is subjected to voltage conversion and then is charged to the battery module, so that the current of the battery module during charging and discharging can be controlled, and the charging and discharging times of the battery module are reduced; when the motor module suddenly stops rotating, the voltage of the input current of the battery can be converted through the voltage conversion module, so that the safety of the battery is protected; meanwhile, the capacity requirement on the battery module is low, and the cost of the whole system is greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an online power supply and charging system provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an online power supply and charging system provided in an embodiment of the present application.
Description of reference numerals:
the system comprises a motor module 1, a motor 11, a motor 12, a motor controller 2, a battery module 21, a power battery 22, a battery management unit 3, a vehicle-mounted charger module, a 4-switch module, a 5-voltage transformation module and a 6-vehicle controller.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
At present, a traditional purely electric engineering mechanical vehicle generally adopts a vehicle-mounted charger to directly supply power to a motor for operation, or adopts a built-in battery to supply power to the motor for operation, and requires that the allowable charging current of the built-in battery is necessarily greater than the maximum output current of the vehicle-mounted charger, otherwise, when the motor suddenly stops rotating, the built-in battery is charged by the large current of the vehicle-mounted charger, and the built-in battery is burnt; meanwhile, the charging and discharging current of the built-in battery is not controlled, and frequent charging and discharging are realized, so that the charging and discharging times of the built-in battery are reduced, and the service life of the built-in battery is shortened; because the allowable charging current of the built-in battery is higher, the requirement on the capacity of the built-in battery is higher, and the cost of the built-in battery accounts for nearly 70% of the whole power system, the capacity selection of the built-in battery is limited, the system cost is higher, and the reduction of the cost of the whole vehicle and the standardization of the battery are not facilitated; and when the voltage of the built-in battery is lower, the built-in battery and the vehicle-mounted charger cannot supply power to the motor at the same time, and the motor can be supplied with power only after the charging reaches the preset voltage, so that the maximum power of the vehicle is influenced.
Therefore, the online power supply and charging system supplies power to the motor module after voltage transformation is carried out on the output voltage of the battery module through the voltage transformation module, or charges the battery module after voltage transformation is carried out on the input voltage of the voltage transformation module, so that the current of charging and discharging of the battery module is controlled, the charging and discharging times of the battery module are reduced, the safety of the battery is protected, and the system cost is reduced.
An online power supply charging system provided by the present application is exemplarily described below with reference to the accompanying drawings: fig. 1 is a schematic structural diagram of an online power supply and charging system provided in an embodiment of the present application, and as shown in fig. 1, for convenience of description, only parts related to the embodiment are shown, and detailed descriptions are as follows: the online power supply and charging system is applied to engineering machinery vehicles and comprises:
a motor module 1 configured to control a working process of a construction machine vehicle;
a battery module 2 configured to receive or discharge electric energy;
the vehicle-mounted charger module 3 is electrically connected with the motor module 1 and is configured to be connected with an external power supply and supply power to the motor module 1;
the switch module 4 is electrically connected with the motor module 1, the battery module 2 and the vehicle-mounted charger module 3, and is configured to be connected or disconnected with the motor module 1 or the vehicle-mounted charger module 3 and the battery module 2;
and the voltage conversion module 5 is electrically connected with the switch module 4, the motor module 1, the battery module 2 and the vehicle-mounted charger module 3, and is configured to convert the output voltage of the battery module 2 to supply power to the motor module 1 and convert the input voltage of the voltage conversion module 5 to charge the battery module 1.
In the embodiment of the application, when only the electrical connection between the vehicle-mounted charger module and the motor module is switched on, the vehicle-mounted charger module is connected with an external power supply (namely, the vehicle-mounted charger module is in an external power supply online state) and supplies power to the motor module, the battery module can supply power to the motor module or charge the battery module, the output voltage of the battery module can be subjected to voltage conversion (such as boost conversion) through the voltage conversion module and then supply power to the motor module, or the input voltage of the voltage conversion module is subjected to voltage conversion (such as buck conversion or boost conversion) and then charge the battery module, so that the input voltage and the output voltage of the battery module can be controlled, the battery module is prevented from being damaged by overhigh voltage, the safety of the battery module is improved, and the requirement on the capacity of the battery is reduced along with the increase of the output voltage of the battery module, the production cost of the system is reduced; meanwhile, when the voltage of the battery module is lower, the voltage can be increased through the voltage conversion module to directly supply power to the motor module, so that the traditional online charging and discharging system is avoided, and the power can be continuously supplied to the motor module only after the battery module is charged, so that the consumption of the charging and discharging times of the battery module is reduced, the service life of the battery is prolonged, the power supply efficiency is improved, and the maximum power of a vehicle is guaranteed.
Fig. 2 is a schematic structural diagram of an online power supply and charging system provided in an embodiment of the present application, and as shown in fig. 2, the online power supply and charging system further includes an exemplary charging device;
the vehicle control unit 6 is electrically connected with the motor module 1, the battery module 2, the vehicle-mounted charger module 3 and the switch module 4, and is configured to control the working state of the motor module 1, control the charging and discharging process of the battery module 2, control the vehicle-mounted charger module 3 to access an external power supply, and control the on/off state of the switch module 4.
In the embodiment of the application, the vehicle control unit controls the motor module to start and stop, controls the battery module to charge and discharge, and controls the voltage conversion module to perform voltage conversion on the input voltage of the voltage conversion module or the output voltage of the battery module, so that the voltage is reduced when the input voltage is too high, the battery module is protected, or the voltage is increased when the output voltage is too low, and the motor module can be normally powered; the vehicle-mounted charger module is controlled by the vehicle control unit to be connected with an external power supply and supply power to the motor module or the voltage conversion module, and the on-off state of the switch module is controlled by the vehicle control unit.
As shown in fig. 2, the battery module 2 illustratively includes:
21 a power battery electrically connected with the voltage conversion module 5 and the switch module 4 and configured to store electric energy;
and 22, a battery management unit electrically connected with the power battery 21 and the voltage conversion module 5 and configured to control the charging and discharging process of the power battery 21 and control the voltage conversion module 5 to perform voltage conversion on the input voltage or the output voltage of the power battery 21.
In the embodiment of the application, the battery management unit sends a power demand to the vehicle-mounted charger module according to a charging instruction issued by the vehicle control unit, so that the charging process of the power battery is realized, and a boosting or voltage-reducing instruction is sent to the voltage conversion module at the same time, so that the output voltage of the power battery is boosted, the power supply demand of the motor module is met, or the input voltage of the power battery is reduced, and the power battery is prevented from being burnt by overhigh voltage.
As shown in fig. 2, the electric machine module 1 illustratively includes:
a motor 11 configured to power a work machine vehicle;
and the motor controller 12 is electrically connected with the motor 11, the vehicle-mounted charger module 3, the voltage conversion module 5 and the switch module 4 and is configured to control the motor to work.
In this embodiment, the motor controller obtains electric energy from the voltage conversion module or the vehicle-mounted charger module to complete driving of the motor module.
As shown in fig. 2, the voltage conversion module may include a bidirectional DC/DC converter (i.e., Direct current-Direct current converter).
In the embodiment of the application, the voltage conversion module can comprise a bidirectional DC/DC converter, so that the output voltage or the input voltage of the battery module can be boosted or reduced, the boosted voltage can meet the required voltage of the motor module when the battery module is at a low voltage, and the input voltage can be reduced and charged when the input voltage is too large, so that the battery module is protected, and the battery module is prevented from being burnt out by too large voltage.
Illustratively, the vehicle-mounted charger module comprises a direct contact type power taking device and a non-contact type power taking device.
In this application embodiment, get the electric installation and get the electric installation with non-contact including direct contact through on-vehicle machine module that charges to can adopt direct contact's mode or non-contact's mode to get the electricity from the electric wire netting, realize the online charging of this application.
The battery module has a battery capacity of 10 to 50 KWh.
In the embodiment of the application, the battery capacity of the battery module is 10-50 KWh, for example 16KWh, so that the battery capacity requirement of the battery module is greatly reduced, and the generation cost of the whole system is effectively reduced.
Illustratively, the switch module includes an electromagnetic relay.
In the embodiment of the application, the switch module comprises the electromagnetic relay, so that the switch module can be switched on or switched off according to a switch instruction controlled by the whole vehicle.
Illustratively, the work machine vehicle comprises a pure electric vehicle.
In the embodiment of the application, the engineering machinery vehicle comprises the pure electric vehicle, so that the system is not only suitable for large engineering machinery vehicles for engineering construction, but also suitable for common pure electric vehicles, and is wide in application range.
Illustratively, the embodiment discloses a construction machinery vehicle, which is applied to an on-line power supply charging system.
In the embodiment of the application, the engineering machinery vehicle applies the online power supply charging system, so that when only the electrical connection between the vehicle-mounted charger module and the motor module is switched on inside the engineering machinery vehicle, the vehicle-mounted charger module is connected to an external power supply and supplies power to the motor module, the switch module is switched on or switched off, the battery module can supply power to the motor module, or the vehicle-mounted charger module charges the battery module, the voltage conversion module can convert the output voltage of the battery module and then supply power to the motor module, or the voltage conversion module can convert the input voltage (such as voltage reduction conversion or voltage boost conversion) and then charge the battery module.
Exemplarily, the embodiment discloses a control method of an online power supply and charging system, which includes the following steps executed by a vehicle controller:
the control voltage conversion module is used for performing voltage conversion on the output voltage of the battery module and then supplying power to the motor module;
or, the vehicle-mounted charger module is controlled to supply power to the motor module and the battery module, and the voltage conversion module is controlled to convert the input voltage of the voltage conversion module or the output voltage of the battery module, so that the battery module is charged or discharged.
In the embodiment of the application, when only the electric connection between the vehicle-mounted charger module and the motor module is switched on, the motor module can be supplied with power through the vehicle-mounted charger module; when only the electrical connection between the battery module and the motor module is switched on, power can be supplied to the motor module through the battery module; when the motor module stops, the battery module can be charged through the vehicle-mounted charger module; when the output voltage of the battery module is lower than the required voltage of the motor module, the voltage of the output voltage of the battery module can be converted by the voltage conversion module to supply power to the motor module; when the vehicle-mounted charger module supplies power to the battery module and the motor module at the same time, the voltage conversion module is controlled to carry out voltage conversion on the input voltage of the voltage conversion module or the output voltage of the battery module so as to charge or discharge the battery module.
Illustratively, the controlling the voltage conversion module to convert the voltage of the output voltage of the battery module and supply power to the motor module includes:
when the electric connection between the vehicle-mounted charger module and the motor module and the voltage conversion module is disconnected and the output voltage of the battery module is smaller than the required voltage of the motor module, the control switch module disconnects the electric connection between the battery module and the motor module, and the voltage conversion module boosts the output voltage of the battery module and supplies power to the motor module.
In the embodiment of the application, when the vehicle-mounted charger module is disconnected from the electric connection between the motor module and the voltage conversion module and when the output voltage of the battery module is smaller than the required voltage of the motor module, the system is in the off-line mode of the vehicle-mounted charger, and because the current output voltage of the battery module cannot meet the required voltage of the motor module, the required voltage of the motor module can be met after the output voltage of the battery module is boosted through the voltage conversion module, power can be supplied to the motor module, and the normal work of the motor is maintained.
Illustratively, the controlling the vehicle-mounted charger module to supply power to the motor module and the battery module, and simultaneously controlling the voltage conversion module to perform voltage conversion on the input voltage of the voltage conversion module or the output voltage of the battery module so as to charge or discharge the battery module includes:
when the electric connection between the vehicle-mounted charger module and the voltage conversion module and the motor module is switched on, the control switch module is used for disconnecting the electric connection between the battery module and the motor module, the vehicle-mounted charger module is used for supplying power to the voltage conversion module and the motor module, and meanwhile, the voltage conversion module is used for performing voltage conversion on the input voltage of the voltage conversion module or the output voltage of the battery module so as to charge or discharge the battery module.
In the embodiment of the application, when the vehicle-mounted charger module is electrically connected with the voltage conversion module and the motor module, when the system is in the on-line mode of both the vehicle-mounted charger module and the battery module, the control switch module disconnects the electric connection between the battery module and the motor module, and simultaneously supplies power to the voltage conversion module and the motor module through the vehicle-mounted charger module, meanwhile, when the motor module suddenly stops rotating, the vehicle-mounted charger module cannot respond in time and large current charges the battery module, the input voltage of the voltage conversion module can be reduced through the voltage conversion module, so as to protect the battery module from being normally charged, meanwhile, when the output voltage of the battery module is too low or the required voltage of the motor module is too high, the output voltage of the battery module can be boosted through the voltage conversion module so as to normally supply power for the motor module.
Illustratively, the control method further includes:
when the switch module is disconnected and the electric connection between the vehicle-mounted charger module and the voltage conversion module is disconnected, the vehicle-mounted charger module supplies power to the motor module.
In the embodiment of the application, when the switch module is disconnected, the electric connection between the vehicle-mounted charger module and the voltage conversion module is disconnected, and no three-phase alternating current is input, the system is in the battery offline module, and power is supplied to the motor module only through the vehicle-mounted charger module.
Illustratively, the control method further includes:
when the electric connection between the vehicle-mounted charger module and the motor module and the electric connection between the vehicle-mounted charger module and the voltage conversion module are disconnected and the output voltage of the battery module is greater than or equal to the required voltage of the motor module, the control switch module is connected with the electric connection between the battery module and the motor module, and the battery module supplies power to the motor module.
In the embodiment of the application, when the vehicle-mounted charger module is disconnected from the electric connection between the motor module and the voltage conversion module, the system is in the off-line mode of the vehicle-mounted charger, and when the output voltage of the battery module is greater than or equal to the required voltage of the motor module, the normal output voltage of the battery module can meet the required voltage of the motor module, so that the switch module is directly controlled to be connected with the electric connection between the battery module and the motor module, and the battery module supplies power to the motor module.
Illustratively, the control method further includes:
when the motor is normally stopped, the control switch module is connected with the vehicle-mounted charger module and the battery module, and the battery module is charged through the vehicle-mounted charger module.
In the embodiment of the application, when the motor is normally stopped, the system is in the battery charging mode, so that the control switch module is connected with the electric connection between the vehicle-mounted charger module and the battery module, and the battery module is charged through the vehicle-mounted charger module.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed uninterruptible power supply parallel redundancy system and method may be implemented in other ways. For example, the ups parallel redundancy system embodiments described above are merely illustrative, and for example, a division of modules or units is merely a logical division, and in practice, there may be other divisions, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. The utility model provides an online power supply charging system, is applied to engineering machinery vehicle which characterized in that includes:
a motor module configured to control a work process of the work machine vehicle;
a battery module configured to receive or discharge electric energy;
the vehicle-mounted charger module is electrically connected with the motor module and is configured to be connected with an external power supply and supply power to the motor module;
the switch module is electrically connected with the motor module, the battery module and the vehicle-mounted charger module, and is configured to be connected or disconnected with the motor module and the battery module;
and the voltage conversion module is electrically connected with the switch module, the motor module, the battery module and the vehicle-mounted charger module, and is configured to convert the output voltage of the battery module to supply power to the motor module and convert the input voltage of the voltage conversion module to charge the battery module.
2. The online powered charging system of claim 1 further comprising:
and the vehicle control unit is electrically connected with the motor module, the battery module, the vehicle-mounted charger module and the switch module, and is configured to control the working state of the motor module, control the charging and discharging process of the battery module, control the vehicle-mounted charger module to be connected to an external power supply and control the on-off state of the switch module.
3. The online powered charging system of claim 1 wherein the battery module comprises:
a power battery electrically connected with the voltage conversion module and the switch module and configured to store electric energy;
and the battery management unit is electrically connected with the power battery and the voltage conversion module and is configured to control the charging and discharging process of the power battery and control the voltage conversion module to perform voltage conversion on the input voltage or the output voltage of the power battery.
4. The online powered charging system of claim 1 wherein the motor module comprises:
an electric machine configured to provide power to the work machine vehicle;
and the motor controller is electrically connected with the motor, the vehicle-mounted charger module, the voltage conversion module and the switch module and is configured to control the motor to work.
5. The on-line power supply charging system of claim 1, wherein the voltage conversion module comprises a bidirectional DC/DC converter.
6. The on-line power supply charging system of claim 1, wherein the vehicle-mounted charger module comprises a direct contact power taking device and a non-contact power taking device.
7. The online powered charging system of claim 1 wherein the battery module has a battery capacity of 10 to 50 KWh.
8. An on-line power charging system as claimed in claim 1, wherein said switching module comprises an electromagnetic relay.
9. The online powered charging system of claim 1 wherein the work machine vehicle comprises a pure electric vehicle.
10. A work machine vehicle, characterized in that the on-line power supply and charging system of any one of claims 1 to 9 is applied.
CN202121945076.3U 2021-08-18 2021-08-18 Online power supply and charging system and engineering machinery vehicle Active CN216545769U (en)

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Address after: 710000 Room 101, building a, building 6, digital economy industrial park, No. 201, Pufeng Road, high tech Zone, Xi'an, Shaanxi Province

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Address before: 710000 Room 101, building a, building 6, digital economy industrial park, No. 201, Pufeng Road, high tech Zone, Xi'an, Shaanxi Province

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