CN210792816U - Charging and discharging detection circuit, electric vehicle and charging and discharging detection system - Google Patents

Charging and discharging detection circuit, electric vehicle and charging and discharging detection system Download PDF

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CN210792816U
CN210792816U CN201921438455.6U CN201921438455U CN210792816U CN 210792816 U CN210792816 U CN 210792816U CN 201921438455 U CN201921438455 U CN 201921438455U CN 210792816 U CN210792816 U CN 210792816U
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vehicle
battery
charging
charge
mounted battery
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毛广甫
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Repower Technology Co ltd
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Repower 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
    • Y02T90/12—Electric charging stations
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12—Remote or cooperative charging

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  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A charging and discharging detection circuit, an electric vehicle and a charging and discharging detection system are provided, wherein the charging and discharging detection circuit is arranged on a first electric vehicle, and a second vehicle-mounted battery on a second electric vehicle can be charged through a first vehicle-mounted battery on the first electric vehicle; the charge and discharge detection circuit includes: the device comprises an electric energy transmission module, a communication receiving module, a wireless communication module, a battery monitoring module and a display module; the electric energy transmission module charges the second vehicle-mounted battery by adopting the power supply electric energy output by the first vehicle-mounted battery according to the charging and discharging signals; the communication receiving module receives the charge and discharge parameters output by the battery management module; the wireless communication module wirelessly transmits the charging and discharging parameters to the cloud server; the battery monitoring module detects whether the second vehicle-mounted battery has a charging and discharging fault according to the charging and discharging parameters and generates a fault detection result; the display module receives and displays the charging and discharging parameters and the fault detection result; the charging and discharging detection circuit is used for accurately and flexibly detecting the charging and discharging state of the second vehicle-mounted battery.

Description

Charging and discharging detection circuit, electric vehicle and charging and discharging detection system
Technical Field
The application belongs to the technical field of electronic circuits, and particularly relates to a charging and discharging detection circuit, an electric vehicle and a charging and discharging detection system.
Background
At present, the intelligent charging technology has been developed rapidly, and due to the rapid development of electronic products, the electronic products can be charged intelligently, so that the electronic products can be connected with electric energy stably and maintain a normal and safe working state; taking an electric vehicle as an example, because the electric vehicle is driven by electric energy, the consumption of fossil fuels such as petroleum and the like can be reduced, the electric energy has higher application universality, and the electric vehicle can realize a charging function in an electric power system in the driving process so as to keep the self electric power endurance function; therefore, the safe charging performance of the electric vehicle has an extremely important significance for the operation stability of the electric vehicle, and the electric vehicle needs to be connected with electric energy to maintain the running function.
However, most of the conventional technologies charge the electric vehicle through a charging pile power grid, the charging position is greatly limited, general charging detection equipment is huge in size and extremely easy to limit during use, the charging state of the battery cannot be monitored in real time and flexibly in a conventional mode through the electric vehicle, the charging safety is improved, the charging universality is low, when the electric vehicle breaks down, the problem cannot be solved quickly and flexibly, and the normal supply of electric quantity of the electric vehicle cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the application provides a charge and discharge detection circuit, an electric vehicle and a charge and discharge detection system, and aims to solve the problems that the safety and reliability of the charge and discharge process of the electric vehicle are low and the physical safety and practical value of the electric vehicle are damaged due to the fact that the electric vehicle cannot be flexibly charged and controlled and the charge and discharge state of the electric vehicle is not safely detected in the traditional technical scheme.
A first aspect of the embodiments of the present application provides a charge and discharge detection circuit, locates first electric motor car, first electric motor car includes first on-vehicle battery, wherein first electric motor car is coupled with the second electric motor car, the second electric motor car includes on-vehicle battery of second and battery management module, first on-vehicle battery is used for right the second on-vehicle battery charges, charge and discharge detection circuit includes:
the electric energy transmission module is connected with the first vehicle-mounted battery and the second vehicle-mounted battery and is configured to charge the second vehicle-mounted battery by using the supply electric energy output by the first vehicle-mounted battery according to a charging and discharging signal;
a communication receiving module connected with the battery management module and configured to receive the charging and discharging parameters output by the battery management module; the charging and discharging parameters are obtained by acquiring the charging and discharging state of the second vehicle-mounted battery by the battery management module when the second vehicle-mounted battery is charged or discharged;
the wireless communication module is connected with the communication receiving module and the cloud server and is configured to wirelessly transmit the charging and discharging parameters to the cloud server;
the battery monitoring module is connected with the wireless communication module and is configured to detect whether the second vehicle-mounted battery has charging and discharging faults according to the charging and discharging parameters and generate fault detection results; and
and the display module is connected with the battery monitoring module and is configured to receive and display the charging and discharging parameters and the fault detection result.
In one embodiment, the charge/discharge detection circuit further includes:
and the voltage-withstanding detection module is connected with the second vehicle-mounted battery and is configured to perform insulation detection on the second vehicle-mounted battery and perform voltage-withstanding detection on the second vehicle-mounted battery.
In one embodiment, the voltage withstanding detection module is configured to generate an insulation warning signal when detecting that the second onboard battery has an insulation fault, and generate a voltage withstanding warning signal when detecting that the second onboard battery has a voltage withstanding fault;
the charge and discharge detection circuit further includes:
and the fault alarm module is connected with the voltage-resistant detection module and is configured to send out a fault alarm signal according to the insulation alarm signal and/or the voltage-resistant alarm signal.
In one embodiment, the wireless communication module is a CAN communication interface;
the battery monitoring module is connected with the display module through an RS485 communication interface.
In one embodiment thereof, the power transmission module includes:
a direct current transmission unit connected to the first on-vehicle battery and the second on-vehicle battery and configured to transmit the supply power output by the first on-vehicle battery to the second on-vehicle battery according to a first charge-discharge signal so as to charge the second on-vehicle battery; and
and the alternating current transmission unit is connected with the first vehicle-mounted battery and the second vehicle-mounted battery, is configured to invert the power supply electric energy output by the first vehicle-mounted battery according to a second charging and discharging signal to obtain a first alternating current signal, and transmits the first alternating current signal to the second vehicle-mounted battery so as to charge the second vehicle-mounted battery.
In one embodiment, the charge/discharge detection circuit further includes:
the key module is connected with the direct current charging module and the alternating current charging module and configured to generate the first charge and discharge signal or the second charge and discharge signal according to a key signal output by a user.
In one embodiment thereof, the power transmission module includes:
a power transmission unit connected to the first on-vehicle battery and configured to transmit the supply power output from the first on-vehicle battery according to the charge/discharge signal; and
and the electric energy adjusting unit is connected with the electric power transmission unit and the second vehicle-mounted battery, is configured to adjust the amplitude of the power supply electric energy according to the rated charging power of the second vehicle-mounted battery, and adopts the adjusted power supply electric energy to charge the second vehicle-mounted battery.
In one embodiment, the charge/discharge detection circuit includes:
a charge amount detection module connected to the first on-vehicle battery and configured to detect a remaining charge amount value of the first on-vehicle battery.
A second aspect of an embodiment of the present application provides an electric vehicle, including:
the first vehicle-mounted battery is connected with a second vehicle-mounted battery of another electric vehicle, and the first vehicle-mounted battery is used for charging the second vehicle-mounted battery; and
the charging and discharging detection circuit is connected with the first vehicle-mounted battery and the second vehicle-mounted battery, and the charging and discharging detection circuit is used for detecting and displaying charging and discharging parameters and fault detection results of the second vehicle-mounted battery when the first vehicle-mounted battery charges the second vehicle-mounted battery.
A third aspect of an embodiment of the present application provides a charge and discharge detection system, including:
at least two electric vehicles as described above in cascade;
the first electric vehicle and the second electric vehicle are any two adjacent electric vehicles, the first electric vehicle comprises a first vehicle-mounted battery, the second electric vehicle comprises a second vehicle-mounted battery, and the first electric vehicle is used for detecting and displaying the charging and discharging parameters and the fault detection result of the second vehicle-mounted battery when the second vehicle-mounted battery is charged through the first vehicle-mounted battery.
The charging and discharging detection circuit is arranged on the first electric vehicle, the second vehicle-mounted battery on the second electric vehicle can be charged through the first vehicle-mounted battery on the first electric vehicle, and when the second vehicle-mounted battery is charged or discharged, the charging and discharging detection circuit can be used for detecting the charging and discharging state of the second electric vehicle in real time, so that the safety of the second vehicle-mounted battery is greatly guaranteed; the display module can display the charging and discharging information and the fault detection result of the second electric vehicle in real time, so that better visual experience is brought to a user, the user can conveniently acquire the charging and discharging state of the second electric vehicle, the charging and discharging safety of the second electric vehicle is greatly guaranteed, and the second electric vehicle is prevented from being in the fault charging and discharging state for a long time; therefore, the embodiment can not only charge the second electric vehicle in real time through the first electric vehicle, the charging flexibility and the simplicity of the second electric vehicle are improved, but also the actual charging and discharging state of the second vehicle-mounted battery can be detected in real time through the charging and discharging detection circuit, when the second electric vehicle is in the process of external environment, the charging and discharging detection circuit can accurately detect and display the charging and discharging information anytime and anywhere, good use experience is brought to a user, the second electric vehicle has higher physical safety and reliability, the detection step of the charging and discharging process of the electric vehicle is further simplified, and the practical value is higher.
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 a charge and discharge detection circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another charge and discharge detection circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an electric energy transmission module according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an electric energy transmission module according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of another charge and discharge detection circuit according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of another charge and discharge detection circuit according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of another charge and discharge detection circuit according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an electric vehicle according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a charge and discharge detection system according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further 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.
Referring to fig. 1, a schematic structural diagram of a charging and discharging detection circuit 10 provided in the embodiment of the present application illustrates that the charging and discharging detection circuit 10 has a charging and discharging detection function and is relatively strong in controllability; the charge and discharge detection circuit 10 is disposed on a first electric vehicle 20, the first electric vehicle 20 includes a first vehicle-mounted battery 201, wherein the first electric vehicle 20 is coupled with a second electric vehicle 30, and the second electric vehicle 30 can be charged through the first electric vehicle 20, so as to ensure the electric power safety and reliability of the second electric vehicle 30; the second electric vehicle 30 comprises a second vehicle-mounted battery 301 and a battery management module 302, wherein the first vehicle-mounted battery 201 is used for charging the second vehicle-mounted battery 301 so as to guarantee the safety and the effectiveness of electric power storage of the second vehicle-mounted battery 301; in one aspect, the first electric vehicle 20 is used to power the electric devices on the first electric vehicle 20, and optionally, the electric devices on the first electric vehicle 20 include various electronic devices, such as: engines, indicator lights, etc.; on the other hand, the second vehicle-mounted battery 301 can be charged at any time through the first vehicle-mounted battery 201, and the charging and discharging state of the second vehicle-mounted battery 301 can be displayed and fault detection can be carried out through the charging and discharging detection circuit 10, so that a user can know the charging and discharging state of the second vehicle-mounted battery 301 in real time, the driving safety and stability of the second electric vehicle 30 are guaranteed, and the compatibility is wider; for convenience of explanation, only the parts related to the present embodiment are shown, and detailed as follows:
the charge/discharge detection circuit 10 includes: the system comprises a power transmission module 101, a communication receiving module 102, a wireless communication module 103, a battery monitoring module 104 and a display module 105; therefore, the charge/discharge detection circuit 10 in this embodiment has a simplified circuit structure, and can realize a quick and flexible detection function for the charge/discharge state of the second on-board battery 301, and the application range is very wide.
The power transmission module 101 is connected to the first vehicle-mounted battery 201 and the second vehicle-mounted battery 301, and configured to charge the second vehicle-mounted battery 301 with the supply power output by the first vehicle-mounted battery 201 according to the charge/discharge signal.
Specifically, when the power transmission module 101 receives the charge and discharge signal, the power transmission module 101 charges the second vehicle-mounted battery 301 according to the power supply power output by the first vehicle-mounted battery 201; on the contrary, if the power transmission module 101 does not receive the charging/discharging signal, the power transmission module 101 does not charge the second on-board battery 301, and the second on-board battery 301 is in the charging suspension state; the charging and discharging signals comprise user charging control information, and then the electric energy transmission module 101 can start a charging function for the second vehicle-mounted battery 301 according to the charging control demand information of the user, so that the charging control flexibility and the control accuracy of the second vehicle-mounted battery 301 are improved, and better use experience is brought to the user.
In the embodiment, the electric energy transmission module 101 can perform charging control on the second vehicle-mounted battery 301 in real time to meet the charging and discharging control requirements of users, and the electric energy transmission module 101 can access power supply electric energy from the first vehicle-mounted battery 201 in real time and keep compatible and stable transmission of the power supply electric energy to perform safe charging on the second vehicle-mounted battery 301; the second vehicle-mounted battery 301 can realize an energy storage effect, and the electric equipment on the second electric vehicle 30 is charged in real time through the second vehicle-mounted battery 301, so that the charging safety and effectiveness of the second electric vehicle 30 are greatly guaranteed; therefore, the power transmission module 101 in this embodiment can power up the second on-board battery 301 in real time, thereby ensuring the power-up safety and efficiency of the second on-board battery 301 and preventing the charging power loss.
The communication receiving module 102 is connected to the battery management module 302, and configured to receive the charge and discharge parameters output by the battery management module 302; the charging and discharging parameters are obtained by the battery management module 302 by collecting the charging and discharging state of the second vehicle-mounted battery 301 when the second vehicle-mounted battery 301 is charged or discharged.
The battery management module 302 is arranged on the second electric vehicle 30, and then the battery management module 302 can accurately acquire the charging and discharging state of the second vehicle-mounted battery 301, the charging and discharging parameters acquired through the battery management module 302 can accurately acquire the electric energy input and output state of the second vehicle-mounted battery 301, and then the battery management module 302 can sensitively acquire the electric energy input and output state of the second vehicle-mounted battery 301, so that the real-time monitoring of the charging and discharging state of the second vehicle-mounted battery 301 is facilitated.
Optionally, the battery management module 302 includes a battery management chip, and the model of the battery management chip is, for example: CHK0501C or CN 305X; therefore, the present embodiment can sensitively detect the actual charge-discharge state of the second vehicle-mounted battery 301 through the battery management chip, and the detection accuracy is high.
Optionally, the charge and discharge parameters of the second on-board battery 301 include: at least any one of a charging voltage, a discharging voltage, a charging current, and a discharging current; and then, the actual charging and discharging state of the second on-board battery 301 can be obtained in real time by detecting the charging and discharging parameters of the second on-board battery 301, and then whether the second on-board battery 301 is in the safe charging and discharging state can be more accurately judged according to the charging and discharging parameters of the second on-board battery 301.
Optionally, the communication receiving module 102 is connected to the battery management module 302 in a wired or wireless manner, so that the communication receiving module 102 can receive the charging and discharging parameters in a wired or wireless manner, and the communication receiving module 102 can receive the charging and discharging information of the second on-board battery 301 in real time, so as to accurately transmit the charging and discharging information of the second on-board battery 301, and further the first electric vehicle 20 can receive the charging and discharging information of the second electric vehicle 30; therefore, the communication receiving module 102 in this embodiment has a high-precision signal compatible transmission performance, and realizes accurate detection of the charge and discharge state of the second vehicle-mounted battery 301 according to the charge and discharge parameters acquired in real time, and the result of the parameter detection has high precision and reliability.
The wireless communication module 103 is connected to the communication receiving module 102 and the cloud server 30, and configured to wirelessly transmit the charging and discharging parameters to the cloud server 40.
The wireless communication module 103 has a wireless information transmission function, so that when the communication receiving module 102 acquires the charge and discharge parameters of the second vehicle-mounted battery 301 in real time, the cloud server 40 can wirelessly receive the charge and discharge parameters and realize a real-time storage function of the charge and discharge parameters, so as to ensure the safety of the charge and discharge parameters; therefore, the cloud server 40 and the wireless communication module 103 can realize a remote wireless communication function, and the user can remotely and wirelessly acquire the actual charging and discharging state of the second on-board battery 301 through the cloud server 40, so that the charging and discharging state of the second on-board battery 301 can be monitored in real time and safely, good convenience in use is brought to the user, and the communication compatibility and stability of the charging and discharging detection circuit 10 are guaranteed.
The battery monitoring module 104 is connected to the wireless communication module 103, and configured to detect whether a charging/discharging fault occurs in the second on-board battery 301 according to the charging/discharging parameters, and generate a fault detection result.
Optionally, the battery monitoring module 104 includes an STM32 series monolithic chip, and then the fault state of the second on-board battery 301 can be accurately detected by the monolithic chip, which is relatively strong in controllability.
The wireless transmission module 103 wirelessly transmits the charge and discharge parameters to the battery monitoring module 104, and the battery monitoring module 104 can realize a charge and discharge state detection function for the second on-board battery 301 according to the charge and discharge parameters so as to accurately acquire whether the second on-board battery 301 has a charge and discharge fault, further prevent the on-board battery from being in a faulty charge and discharge state for a long time and ensure the charge and discharge safety of the on-board battery; for example, if the charge-discharge parameter of the second on-board battery 301 satisfies any one preset condition, the battery monitoring module 104 determines that the second on-board battery 301 has a charge-discharge fault, where the preset condition is as follows:
the charging voltage of the second vehicle-mounted battery 301 is greater than the first safe voltage;
the charging voltage of the second vehicle-mounted battery 301 is less than the second safe voltage; wherein the second safe voltage is less than the first safe voltage;
the charging current of the second vehicle-mounted battery 301 is greater than the first safety current;
the charging current of the second vehicle-mounted battery 301 is smaller than the second safety current; wherein the second safety current is less than the first safety current.
Therefore, the battery monitoring module 104 in this embodiment can acquire the charge-discharge fault state of the second on-board battery 301 in real time, and realize a flexible and accurate detection function for the charge state of the second electric vehicle 30; specifically, the fault detection result includes a normal charge-discharge state and an abnormal charge-discharge state; when the second on-board battery 301 is in a normal charge-discharge state, the second on-board battery 301 can implement a safe electric energy input-output function; when the second vehicle-mounted battery 301 is in an abnormal charge-discharge state, the second vehicle-mounted battery 301 realizes an unsafe electric energy input-output function; therefore, the actual charging and discharging state of the second on-board battery 301 can be truly acquired according to the fault detection result, the detection efficiency is high, the charging and discharging detection safety of the second on-board battery 301 is guaranteed, and the second electric vehicle 30 has higher electric energy storage safety and compatibility.
The display module 105 is connected to the battery monitoring module 104 and configured to receive and display the charging and discharging parameters and the fault detection result.
Optionally, the display module 105 includes a display screen, and then each item of charging and discharging information of the second vehicle-mounted battery 301 in the charging and discharging process can be displayed in real time through the display screen, and a user can more intuitively obtain the fault information of the second vehicle-mounted battery 301 through the display screen, thereby ensuring the safety and stability of the charging and discharging control of the second vehicle-mounted battery 301.
Therefore, the display module 105 in this embodiment has an information display function, the charging and discharging information of the second on-vehicle battery 301 and the fault information of the second on-vehicle battery 301 can be directly displayed through the display module 105, and then when the second on-vehicle battery 301 is charged or discharged, a user can more quickly and accurately display the charging and discharging state of the second on-vehicle battery 301 through the display module 105, better visual experience is brought to the user, the charging and discharging detection circuit 10 has higher human-computer interaction performance, and the charging and discharging safety and stability of the second on-vehicle battery 301 are guaranteed.
In the structural schematic of the charge and discharge detection circuit 10 shown in fig. 1, the charge and discharge detection circuit 10 can detect and display the charge and discharge state of the second vehicle-mounted battery 301 in real time, and on one hand, the charge and discharge information of the second vehicle-mounted battery 301 can be uploaded to the cloud server 40 through the wireless communication module 103, so that the cloud server 40 can analyze and store the charge and discharge information, and the second vehicle-mounted battery 301 can be detected and abnormally repaired in the future; on the other hand, the actual charging and discharging state of the second on-board battery 301 can be clearly and accurately displayed in real time through the display module 105, when the second on-board battery 301 has a fault state, the fault state of the second on-board battery 301 can be more accurately displayed through the display module 105, so that the second on-board battery 301 is prevented from being in the fault charging and discharging state for a long time, the safety and the stability of the second on-board battery 301 are guaranteed, and the charging and discharging state of the second on-board battery 301 can be conveniently and accurately monitored in real time; therefore, the charging and discharging detection circuit 10 in this embodiment can detect and display the charging and discharging state of the second on-board battery 301, and has strong communication compatibility, thereby bringing a good use experience to users, and the charging and discharging detection circuit 10 is disposed on the first electric vehicle 20 in this embodiment, so that the first electric vehicle 20 does not need to carry extra detection equipment in the driving process, and the charging and discharging detection circuit 10 can realize a real-time and flexible charging function for the second on-board battery 301, and detect and display the charging and discharging state of the second on-board battery 301 in real time, and has high flexibility and simplicity, thereby bringing great convenience to users and reducing the charging and discharging detection cost; the problem of traditional technique can't carry out real-time detection to the charge-discharge state of electric motor car effectively, bring greatly inconvenience for user's use, and then lead to the self charge-discharge security of electric motor car lower, can't realize the nimble, safe charge control to the electric motor car, practical value is lower is solved.
As an alternative implementation, fig. 2 shows another structural schematic of the charge and discharge detection circuit 10 provided in this embodiment, and compared with the structural schematic of the charge and discharge detection circuit 10 in fig. 1, the charge and discharge detection circuit 10 in fig. 2 further includes: a voltage withstanding detection module 106, wherein the voltage withstanding detection module 106 is connected to the second on-board battery 301, and is configured to perform insulation detection on the second on-board battery 301 and perform voltage withstanding detection on the second on-board battery 301.
The voltage withstanding detection module 106 can detect the insulation state of the second vehicle-mounted battery 301, so as to avoid the conductive danger during the charging process and the discharging process of the second vehicle-mounted battery 301, and further the second vehicle-mounted battery 301 realizes safer charging performance through the electric energy transmission module 101; illustratively, the voltage-withstanding detection module 106 is further connected to the power transmission module 101, and the power transmission module 101 includes an insulation resistor, where the insulation resistor is used to perform insulation protection on the second on-board battery 301, and then the insulation resistor is detected in real time by the voltage-withstanding detection module 106, so as to ensure the use safety of a user; meanwhile, the voltage accessed by the second vehicle-mounted battery 301 is detected in real time through the voltage-withstanding detection module 10, so that the voltage-withstanding performance of the second vehicle-mounted battery 301 is accurately detected in real time, the input voltage/output voltage of the second vehicle-mounted battery 301 is prevented from exceeding the safe operation voltage, stable and safe electric energy can be provided for the second vehicle-mounted battery 301 all the time through the electric energy transmission module 101, and the physical safety and the working stability of the charging and discharging detection circuit 10 are guaranteed.
As an alternative embodiment, the voltage withstanding detection module 106 is configured to generate an insulation warning signal when detecting that the second onboard battery 301 has an insulation fault, and generate a voltage withstanding warning signal when detecting that the second onboard battery 301 has a voltage withstanding fault.
Wherein when the withstand voltage detecting module 106 has a fault detecting function; when the second vehicle-mounted battery 301 has an insulation fault, it indicates that the second vehicle-mounted battery 301 has an electric leakage fault in the charging and discharging processes, and the electric leakage fault can cause great harm to human safety; therefore, the withstand voltage detecting module 106 immediately generates an insulation warning signal so as to make a quick response to an insulation fault; when the voltage withstanding fault of the second vehicle-mounted battery 301 occurs, it indicates that the operating voltage of the second vehicle-mounted battery 301 exceeds the safe operating voltage, and the voltage withstanding fault will cause great damage to the electronic safety of the second vehicle-mounted battery 301, and further the voltage withstanding detection module 106 generates the voltage withstanding alarm signal, so as to realize accurate detection and control response accuracy of the voltage withstanding fault of the second vehicle-mounted battery 301, and ensure the safety and reliability of the charging and discharging process of the second vehicle-mounted battery 301.
Referring to fig. 2, the charging and discharging detection circuit 10 further includes a fault alarm module 107, and the fault alarm module 107 is connected to the voltage withstanding detection module 106 and configured to issue a fault alarm signal according to the insulation alarm signal and/or the voltage withstanding alarm signal.
Optionally, when the fault alarm module 107 does not receive the insulation alarm signal and the voltage withstanding alarm signal, the fault alarm module 107 does not send out the fault alarm signal, and this indicates that the second on-board battery 301 is in a safe charging and discharging state.
Therefore, in the present embodiment, the fault alarm module 107 can send out alarm information in real time, so that the user can grasp the insulation fault and the voltage withstanding fault of the second on-board battery 301 in real time, and the safety and effectiveness of the charging control on the second on-board battery 301 are improved; illustratively, the fault alarm module 107 includes an audible and visual alarm by which alarm information can be issued in real time, the fault alarm signal belonging to the optical signal; when the withstand voltage detection module 106 detects that the electric energy transmission fault occurs in the second onboard battery 301, fault prompt information is sent out to prompt a user: a voltage-withstanding fault and/or an insulation fault occurs in the second onboard battery 301; the user can remove the fault state of the second on-board battery 301 in real time, and the working effect and the charging and discharging detection safety of the charging and discharging detection circuit 10 are further ensured.
As an alternative embodiment, the wireless communication module 103 is a CAN (Controller Area Network) communication interface.
The CAN communication interface CAN realize the function of serial communication so as to ensure the transmission efficiency and the transmission integrity of the charge and discharge parameters and improve the charge and discharge detection sensitivity and the information transmission compatibility of the charge and discharge detection circuit 10; therefore, in the present embodiment, the charging and discharging parameters can be wirelessly transmitted to the cloud server 40 and the battery monitoring module 104 through the wireless communication module 103, the charging and discharging detection circuit 10 has higher detection accuracy and detection sensitivity for the charging and discharging state of the second vehicle-mounted battery 301, the charging and discharging detection circuit 10 has higher communication compatibility inside, and the charging and discharging detection circuit 10 can be universally applied to different industrial technology fields to maintain the charging and discharging detection compatibility of the second vehicle-mounted battery 301.
The battery monitoring module 104 and the display module 105 are connected by an RS485 communication interface.
Specifically, RS485 communication interface adopts the difference mode to transmit signals, and then guarantee the remote of charge-discharge parameter and fault detection result through RS485 communication interface, the safety transmission function, charge-discharge detection circuit 10 can be applicable to in each different communication environment universally, and maintain inside communication security and build nature, further simplified charge-discharge detection circuit 10 to the charge-discharge detection cost of second on-board battery 301, the user can be in real time through display module 105, accurately acquire the actual charge-discharge state of second on-board battery 301, better use experience has been brought for the user.
As an optional implementation manner, fig. 3 shows a schematic structure of the power transmission module 101 provided in this embodiment, please refer to fig. 3, where the power transmission module 101 includes: a dc transmission unit 1011 and an ac transmission unit 1012.
The dc transmission unit 1011 is connected to the first on-board battery 201 and the second on-board battery 301, and configured to transmit the power supply output by the first on-board battery to the second on-board battery according to the first charging and discharging signal, so as to charge the second on-board battery 301.
The power supply electric energy of first on-vehicle battery 201 output belongs to the direct current electric energy, and then direct current transmission unit 1011 has the direct current function of charging, it is concrete, when direct current transmission unit 1011 receives first charge-discharge signal, then carry out the rapid transit through the power supply electric energy of first on-vehicle battery 201 output, in order to avoid the power supply electric energy great power loss to appear in transmission process, the power supply electric energy of direct current transmission unit 1011 output can accord with the demand of charging of second on-vehicle battery 301 completely, and then this embodiment passes through direct current transmission unit 1011 output direct current electric energy, improve direct current power supply efficiency and precision, direct current transmission unit 1011 can realize the safe function of charging to second on-vehicle battery 301, second on-vehicle battery 301 has higher charging stability.
The ac transmission unit 1012 is connected to the first on-board battery 201 and the second on-board battery 301, and is configured to invert the power supply energy output by the first on-board battery 201 according to the second charge/discharge signal to obtain a first ac signal, and transmit the first ac signal to the second on-board battery 301 to charge the second on-board battery 301.
Specifically, the ac transmission unit 1012 receives the second charge and discharge signal, inverts the power supply energy to obtain the ac energy with the preset voltage amplitude to start the ac charging function for the second vehicle-mounted battery 301, and the first ac signal output by the ac transmission unit 1012 can completely meet the rated charging power requirement of the second vehicle-mounted battery 301, thereby ensuring the charging safety and charging efficiency for the second vehicle-mounted battery 301.
Therefore, the charging and discharging detection circuit 10 in this embodiment can be compatibly applied to an ac charging system and a dc charging system to realize adaptive charging of the second on-board battery 301, and the compatibility is very strong, and the second on-board battery 301 can be connected to stable electric energy to maintain a safe and stable electric energy operation state.
As an alternative embodiment, referring to fig. 3, the charge/discharge detection circuit 10 further includes: the key module 108, the key module 108 is connected to the dc transmission unit 1011 and the ac transmission unit 1012, and configured to generate a first charge and discharge signal or a second charge and discharge signal according to a key signal output by a user.
The key module 108 is configured to receive key information of a user, the key signal output by the key module 108 includes charge control information of the user, the charge control process of the second vehicle-mounted battery 301 can be changed in real time through the key signal output by the key module 108, the operation is simple, a good charge control experience is brought to the user, and the charge and discharge detection circuit 10 has higher control simplicity and safety.
Therefore, the key module 108 in this embodiment respectively outputs the first charge-discharge signal or the second charge-discharge signal according to the charge control information of the user, so as to respectively implement the dc charging function or the ac charging function for the second on-board battery 301, thereby meeting the safety and efficiency of the charge control of the user; furthermore, the charge and discharge detection circuit 10 can be applied to various different industrial technical fields, the adaptive charging function for the second on-board battery 301 is started according to the key information of the user, the compatibility and the control flexibility are strong, the charge and discharge detection circuit 10 can have high control flexibility for the charging process of the second on-board battery 301, and the application range is wide.
As an optional implementation manner, fig. 4 shows another structural schematic diagram of the power transmission module 101 provided in this embodiment, please refer to fig. 4, where the power transmission module 101 includes: a power transmission unit 401 and a power adjusting unit 402, wherein the power transmission unit 401 is connected to the first on-board battery 201 and configured to transmit the supply power output by the first on-board battery 20 according to the charge and discharge signal
Optionally, the power transmission unit 401 is a twisted pair or a coaxial cable or other wired transmission medium, and the power transmission unit 401 can ensure the transmission safety and effectiveness of the power supply electric energy in real time and maintain the transmission power of the power supply electric energy; furthermore, the power transmission unit 401 can receive the power output by the first on-board battery 20 in real time, the power transmission process between the first on-board battery 201 and the second on-board battery 301 can be flexibly adjusted through the charge and discharge signal, and the charge and discharge detection circuit 10 has higher power transmission safety and efficiency.
The power adjusting unit 402 is connected to the power transmission unit 401 and the second on-board battery 301, and configured to adjust the amplitude of the supply power according to the rated charging power of the second on-board battery 301, and charge the second on-board battery 301 with the adjusted supply power.
The electric energy adjusting unit 402 can adjust the voltage and/or the current of the power supply electric energy in real time, so that the adjusted power supply electric energy can completely meet the rated charging function requirement of the second vehicle-mounted battery 301, the charging efficiency and the charging safety of the second vehicle-mounted battery 301 are improved, and the application range is wide; specifically, the electric energy adjusting unit 402 is further connected to the communication receiving module 102, and the communication receiving module 102 can obtain the rated charging power of the second on-board battery 301 in real time and output the rated power acquisition result to the electric energy adjusting unit 402, so as to implement a feedback control function for the electric energy adjusting unit 402; the power supply electric energy output by the electric energy adjusting unit 402 can completely meet the safe charging requirement of the second on-board battery 301, the charging safety and reliability of the electric energy transmission module 101 to the second on-board battery 301 are greatly guaranteed, the second on-board battery 301 can be always in a safe charging control state, and the operating efficiency and the physical safety of the second electric vehicle 30 are improved.
Illustratively, the power conditioning unit 402 includes a power conditioning chip, illustratively, the power conditioning chip includes: SG3525 or PUCC 3801; and then can carry out nimble, stable regulation and control to the amplitude of electric energy through the electric energy adjusting chip, reduced the charge control cost of second on-board battery 30, simplified the internal circuit structure of charge-discharge circuit 10.
As an alternative implementation, fig. 5 shows another structural schematic of the charge and discharge detection circuit 10 provided in this embodiment, and compared with the structural schematic of the charge and discharge detection circuit 10 in fig. 1, the charge and discharge detection circuit 10 in fig. 5 further includes: the power detection module 109, wherein the power detection module 109 is connected to the first vehicle battery 201, and is configured to detect a remaining power value of the first vehicle battery 201.
The electric quantity detection module 109 has an electric quantity detection function, and when the first vehicle-mounted battery 201 outputs the power supply electric energy, the residual electric quantity value of the first vehicle-mounted battery 201 will gradually decrease; therefore, in the embodiment, the electric quantity change state of the first vehicle-mounted battery 201 is detected in real time by the electric quantity detection module 109, so that the first vehicle-mounted battery 201 can be prevented from being in an over-discharge state in time, and the electric energy safety of the first vehicle-mounted battery 201 is greatly guaranteed; and then, the first vehicle-mounted battery 201 is always in a safe power supply state for the second vehicle-mounted battery 301, so that the physical safety and reliability of the first vehicle-mounted battery 201 are guaranteed.
Optionally, the electric quantity detection module 109 is further configured to generate an over-discharge protection signal when detecting that the remaining electric quantity value of the first vehicle-mounted battery 201 is smaller than the preset electric quantity value.
The electric quantity detection module 109 is further connected with the electric energy transmission module 101, the electric quantity detection module 109 outputs the over-discharge protection signal to the electric energy transmission module 101, and the electric energy transmission module 101 stops outputting electric energy according to the over-discharge protection signal.
When the electric quantity detection module 109 detects that the first vehicle-mounted battery 201 is in an overdischarge state, an overdischarge protection measure is implemented on the first vehicle-mounted battery 201 through an overdischarge protection signal so as to prevent the first vehicle-mounted battery 201 from being in the overdischarge state for a long time and guarantee the electric energy storage safety and the efficiency of the first vehicle-mounted battery 201; therefore, the electric quantity detection module 109 can ensure the electric energy output safety of the first vehicle-mounted battery 201 in the embodiment, and the inside of the charging and discharging detection circuit 10 is always in a safe electric energy transmission state, so that the charging efficiency and the safety of the second electric vehicle 30 are ensured, and the internal electric energy of the first electric vehicle 20 has higher stability.
As an alternative implementation, fig. 6 shows another structural schematic of the charge and discharge detection circuit 10 provided in this embodiment, and compared with the structural schematic of the charge and discharge detection circuit 10 in fig. 3, the charge and discharge detection circuit 10 in fig. 6 further includes: a first overvoltage detection module 110 and a second overvoltage detection module 111.
The first overvoltage detection module 110 is connected to the dc transmission unit 1011, and is configured to perform overvoltage detection on the power supply output by the dc transmission unit 1011.
When the dc transmission unit 1011 performs dc charging on the second on-vehicle battery 301 through the power supply, the first overvoltage detection module 110 can perform overvoltage detection on the dc power accessed to the second on-vehicle battery 301, so as to prevent the dc power accessed to the second on-vehicle battery 301 from being in an overvoltage state; the safety and the high efficiency of the direct current charging of the second vehicle-mounted battery 301 are greatly guaranteed through the first overvoltage detection module 110; for example, when the first overvoltage detection module 110 detects that the voltage of the power supply energy output by the dc transmission unit 1011 is greater than the preset safe voltage of the second vehicle-mounted battery 301, the first overvoltage detection module 110 determines that the power supply energy is in an overvoltage state; on the contrary, if the first overvoltage detection module 110 detects that the voltage of the power supply electric energy is less than or equal to the preset safe voltage, the first overvoltage detection module 110 determines that the power supply electric energy is not in an overvoltage state; therefore, the embodiment can detect the overvoltage event of the dc transmission unit 1011 in real time through the first overvoltage detection module 110, thereby ensuring the dc charging safety of the second vehicle-mounted battery 301.
The second overvoltage detection module 111 is connected to the ac transmission unit 1012 and configured to perform overvoltage detection on the first ac electrical signal.
The second overvoltage detection module 111 can sensitively detect the ac charging process of the second on-board battery 301 to ensure the charging safety and high efficiency of the second on-board battery 301, and the second on-board battery 301 is always in a safe ac charging state; for example, when the voltage of the inverted first alternating current signal is greater than the preset safe voltage of the second vehicle-mounted battery 301, the second overvoltage detection module 111 determines that the first alternating current signal is in an overvoltage state, which indicates that the second vehicle-mounted battery 301 is in an unsafe electric energy input state; therefore, in the present embodiment, the second overvoltage detection module 111 can accurately ensure the safety and reliability of the ac charging of the second vehicle-mounted battery 301, and the charging and discharging detection circuit 10 has a wide application range.
Optionally, the first overvoltage detection module 110 includes a first overvoltage detection chip, and the type of the first overvoltage detection chip is: MC3425 or MC 3523.
Optionally, the second overvoltage detection module 111 includes a second overvoltage detection chip, and the type of the second overvoltage detection chip is: MC3425 or MC 3523.
Therefore, the overvoltage detection chip is utilized to realize the overvoltage detection function for the dc charging process and the ac charging process of the second on-board battery 301 in the present embodiment, which not only simplifies the circuit structures of the first overvoltage detection module 110 and the second overvoltage detection module 111, but also improves the detection accuracy for the charging process of the second on-board battery 301, and has higher safety and reliability.
As an alternative implementation, fig. 7 shows another structural schematic of the charge and discharge detection circuit 10 provided in this embodiment, and compared with the structural schematic of the charge and discharge detection circuit 10 in fig. 3, the charge and discharge detection circuit 10 in fig. 7 further includes: a first over-current detection module 112 and a second over-current detection module 113.
The first overcurrent detection module 112 is connected to the dc transmission unit 1011 and configured to perform overcurrent detection on the power supply output by the dc transmission unit 1011.
The first overcurrent detection module 112 is used for performing overcurrent detection on the direct-current charging process of the second on-board battery 301 so as to prevent the second on-board battery 301 from being in an overcurrent charging state, and greatly guarantee the direct-current charging safety of the second on-board battery 301; for example, when the first over-current detection module 112 detects that the current of the power supply energy is greater than the preset safe current of the second vehicle-mounted battery 301, it is determined that the power supply energy is in an over-current state, and the second vehicle-mounted battery 301 is in an extremely unsafe charging state; therefore, the overcurrent state of the second vehicle-mounted battery 301 can be accurately identified in real time through the first overcurrent detection module 112, and the detection precision is extremely high.
The second over-current detection module 113 is connected to the ac transmission unit 1012 and configured to perform over-current detection on the first ac signal.
The second overcurrent detection module 113 can obtain the overcurrent state of the ac transmission unit 1012 in real time, so as to prevent the second on-board battery 301 from being in a failed ac charging state for a long time in real time; specifically, when the second overcurrent detection module 113 detects that the current of the converted first alternating current signal is greater than the preset safe current of the second vehicle-mounted battery 301, it is determined that the inverted first alternating current signal is in an overcurrent state, so as to realize an accurate and sensitive detection function of an overvoltage state in the alternating current charging process of the second vehicle-mounted battery 301; the power transmission safety and efficiency of the ac transmission unit 1012 are further ensured, so that the second on-board battery 301 can be universally applied to different industrial technologies, and the charging safety of the charging and discharging detection circuit 10 for the second on-board battery 301 is maintained.
As an optional implementation manner, the first over-current detection module 112 includes a first over-current detection chip, and the type of the first over-current detection chip is: RT9718BGQW or LT 1153.
As an optional implementation manner, the second over-current detection module 113 includes a second over-current detection chip, and the model of the second over-current detection chip is: RT9718BGQW or LT 1153.
Therefore, the embodiment realizes the accurate and real-time detection function of the overcurrent state of the second on-board battery 301 through the overcurrent detection chip, and can be universally applied to different technical fields.
The charge and discharge detection circuit 10 in this embodiment can transmit the power supply electric energy output by the first electric vehicle 20 to realize the rated charging function of the second on-board battery 301, and has higher electric energy conversion accuracy and electric energy transmission efficiency by combining the direct current transmission unit 1011 and the alternating current transmission unit 1012 to realize the rated charging of the second on-board battery 301 for the second on-board battery 301; further, the charge/discharge detection circuit 10 can be universally applied to different power systems, and has a wide compatibility range.
Fig. 8 shows a structural schematic diagram of an electric vehicle 80 provided in this embodiment, and referring to fig. 8, the electric vehicle 80 includes: a first vehicle-mounted battery 201 and the charging and discharging detection circuit 10 as described above, wherein the first vehicle-mounted battery 201 is connected with a second vehicle-mounted battery of another electric vehicle, and the first vehicle-mounted battery 201 is used for charging the second vehicle-mounted battery; wherein first on-vehicle battery 201 has the electric energy storage function and discharges the function, and then discharges through first on-vehicle battery 201 to the security of charging of the on-vehicle battery of second on the guarantee another electric motor car, and then another electric motor car can access into the electric energy of discharging of electric motor car 80, and maintain stable, safe circuit function, improved the charge simplicity and security of another electric motor car.
The charging and discharging detection circuit 10 is connected to the first vehicle-mounted battery 201 and the second vehicle-mounted battery, and the charging and discharging detection circuit 10 is configured to detect and display a charging and discharging parameter and a fault detection result of the second vehicle-mounted battery 201 when the first vehicle-mounted battery 201 charges the second vehicle-mounted battery.
The charging process of the second vehicle-mounted battery can be flexibly and accurately controlled through the charging and discharging detection circuit 10, and the charging and discharging state of the second vehicle-mounted battery 201 is monitored in real time, so that another electric vehicle is prevented from being in an unsafe charging and discharging state; the charging efficiency and the charging and discharging safety of the other electric vehicle are greatly improved by the charging and discharging detection circuit 10.
Referring to the embodiments of fig. 1 to 7, the charging and discharging detection circuit 10 can perform accurate charging and discharging detection on the second on-board battery, and can detect the charging and discharging state of the second on-board battery in real time during the charging or discharging process of the second on-board battery, so as to perform safety control on the charging and discharging process of the second on-board battery, and the practical value is high; meanwhile, the charge and discharge detection circuit 10 can upload actual charge and discharge information of the second vehicle-mounted battery to the cloud server, and communication compatibility is high; the charge and discharge detection circuit 10 can display the charge and discharge information and the fault state of the second vehicle-mounted battery in real time, and high use experience is brought to a user, so that the user can acquire the actual charge and discharge state of the second vehicle-mounted battery in real time; the electric vehicle 80 can charge another electric vehicle, so that the charging steps of the electric vehicle are simplified, and therefore, if another electric vehicle needs to be charged during the running process of the electric vehicle 80, the electric vehicle 80 charges the electric vehicle to be charged, and the electric energy input and output state of the electric vehicle to be charged is flexibly detected, so that the physical safety and the use convenience of the electric vehicle 80 are realized, and good use experience is brought to a user; the electric vehicle 80 in the embodiment can output electric energy in real time, has extremely strong compatibility, and can be universally applied to different industrial technical fields; the problem of among the traditional art the electric motor car receive the restriction of the position of charging effectively, the flexibility and the compatibility of charging of electric motor car are lower, can't realize automated inspection to the charge-discharge state of electric motor car, lead to the charge-discharge security of electric motor car lower, have reduced the practical value and the application scope of electric motor car is solved.
Fig. 9 shows a structural schematic diagram of the charge and discharge detection system 90 provided in this embodiment, please refer to fig. 9, where the charge and discharge detection system 90 includes at least two cascaded electric vehicles as described above (fig. 9 adopts 901 … 90N, where N is a positive integer greater than or equal to 2); the first electric vehicle is used for detecting and displaying the charge-discharge parameters and the fault detection result of the second vehicle-mounted battery when the second vehicle-mounted battery is charged through the first vehicle-mounted battery; between any two adjacent electric vehicles, the vehicle-mounted battery of one electric vehicle is connected with the vehicle-mounted battery of the other electric vehicle so as to charge the other electric vehicle; furthermore, the electric vehicle in the embodiment can realize a quick and safe charging function by using the adjacent electric vehicle, thereby not only ensuring the charging efficiency of the electric vehicle, but also bringing great convenience to the use of users; therefore, the charging and discharging system 90 in this embodiment not only can realize mutual charging between different electric vehicles, and improve the utilization rate and transmission efficiency of the electric energy stored in the electric vehicle, but also the electric vehicle has the functions of parameter detection and display; illustratively, when the first electric vehicle utilizes the electric energy stored by the vehicle-mounted battery of the first electric vehicle to safely charge the second electric vehicle, the first electric vehicle can monitor the real-time charging and discharging state of the second electric vehicle in real time, so that the charging and discharging safety performance and the cruising performance of the second electric vehicle are guaranteed; the charging and discharging detection system 90 can be universally applied to various different industrial technical fields, for example, under the driving condition of an expressway, an electric vehicle in the traditional technology can be charged only by depending on a charging pile, but the charging pile is difficult to find in a remote area, and the geographical position distribution is uneven; the charging and discharging detection system 90 in the embodiment of the application can directly acquire electric energy from the vehicle-mounted battery in the electric vehicle, transmit the electric energy to other electric vehicles to be charged, and safely and efficiently charge other electric vehicles to be charged, so that the driving stability and reliability of the electric vehicle are guaranteed; therefore, the charging and discharging detection system 90 in the embodiment greatly ensures the charging safety and reliability of the electric vehicle, the charging and discharging control compatibility of the electric vehicle is high, and great convenience is brought to users; the problem of the charging process of traditional art electric motor car comparatively complicated, brought very big inconvenience for user's use has been solved effectively to the charge-discharge security of electric motor car is lower, has reduced the practical value of electric motor car.
In summary, the charging and discharging detection circuit 10 in the embodiment of the present application can monitor the charging and discharging state of the electric vehicle in real time, and identify the charging and discharging fault state; the charging and discharging detection circuit 10 greatly ensures the charging and discharging safety and the application range of the electric vehicle, and improves the practical value and the control convenience of the electric vehicle; this will play a positive role in promoting the development and application of electric vehicle charging technology in the field and generate important practical production value.
Various embodiments are described herein for various devices, circuits, apparatuses, systems, and/or methods. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation. Any directional references (e.g., plus, minus, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above …, below …, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to aid the reader's understanding of the present disclosure, and do not create limitations, particularly as to the position, orientation, or use of the embodiments.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. The utility model provides a charge-discharge detection circuit locates first electric motor car, first electric motor car includes first on-vehicle battery, wherein first electric motor car is coupled with the second electric motor car, the second electric motor car includes on-vehicle battery of second and battery management module, first on-vehicle battery is used for right the on-vehicle battery of second charges, its characterized in that, charge-discharge detection circuit includes:
the electric energy transmission module is connected with the first vehicle-mounted battery and the second vehicle-mounted battery and is configured to charge the second vehicle-mounted battery by using the supply electric energy output by the first vehicle-mounted battery according to a charging and discharging signal;
a communication receiving module connected with the battery management module and configured to receive the charging and discharging parameters output by the battery management module; the charging and discharging parameters are obtained by acquiring the charging and discharging state of the second vehicle-mounted battery by the battery management module when the second vehicle-mounted battery is charged or discharged;
the wireless communication module is connected with the communication receiving module and the cloud server and is configured to wirelessly transmit the charging and discharging parameters to the cloud server;
the battery monitoring module is connected with the wireless communication module and is configured to detect whether the second vehicle-mounted battery has charging and discharging faults according to the charging and discharging parameters and generate fault detection results; and
and the display module is connected with the battery monitoring module and is configured to receive and display the charging and discharging parameters and the fault detection result.
2. The charge and discharge detection circuit according to claim 1, further comprising:
and the voltage-withstanding detection module is connected with the second vehicle-mounted battery and is configured to perform insulation detection on the second vehicle-mounted battery and perform voltage-withstanding detection on the second vehicle-mounted battery.
3. The charging and discharging detection circuit according to claim 2, wherein the voltage withstanding detection module is configured to generate an insulation warning signal when detecting that the second on-board battery has an insulation fault, and generate a voltage withstanding warning signal when detecting that the second on-board battery has a voltage withstanding fault;
the charge and discharge detection circuit further includes:
and the fault alarm module is connected with the voltage-resistant detection module and is configured to send out a fault alarm signal according to the insulation alarm signal and/or the voltage-resistant alarm signal.
4. The charge and discharge detection circuit according to claim 2, wherein the wireless communication module is a CAN communication interface;
the battery monitoring module is connected with the display module through an RS485 communication interface.
5. The charge and discharge detection circuit of claim 1, wherein the power transfer module comprises:
a direct current transmission unit connected to the first on-vehicle battery and the second on-vehicle battery and configured to transmit the supply power output by the first on-vehicle battery to the second on-vehicle battery according to a first charge-discharge signal so as to charge the second on-vehicle battery; and
and the alternating current transmission unit is connected with the first vehicle-mounted battery and the second vehicle-mounted battery, is configured to invert the power supply electric energy output by the first vehicle-mounted battery according to a second charging and discharging signal to obtain a first alternating current signal, and transmits the first alternating current signal to the second vehicle-mounted battery so as to charge the second vehicle-mounted battery.
6. The charge-discharge detection circuit according to claim 5, further comprising:
the key module is connected with the direct current transmission unit and the alternating current transmission unit and configured to generate the first charge and discharge signal or the second charge and discharge signal according to a key signal output by a user.
7. The charge and discharge detection circuit of claim 1, wherein the power transfer module comprises:
a power transmission unit connected to the first on-vehicle battery and configured to transmit the supply power output from the first on-vehicle battery according to the charge/discharge signal; and
and the electric energy adjusting unit is connected with the electric power transmission unit and the second vehicle-mounted battery, is configured to adjust the amplitude of the power supply electric energy according to the rated charging power of the second vehicle-mounted battery, and adopts the adjusted power supply electric energy to charge the second vehicle-mounted battery.
8. The charge and discharge detection circuit according to claim 1, wherein the charge and discharge detection circuit comprises:
a charge amount detection module connected to the first on-vehicle battery and configured to detect a remaining charge amount value of the first on-vehicle battery.
9. An electric vehicle, comprising:
the first vehicle-mounted battery is connected with a second vehicle-mounted battery of another electric vehicle, and the first vehicle-mounted battery is used for charging the second vehicle-mounted battery; and
the charging and discharging detection circuit according to any one of claims 1 to 8, connected to the first vehicle-mounted battery and the second vehicle-mounted battery, and configured to detect and display charging and discharging parameters and a failure detection result of the second vehicle-mounted battery when the first vehicle-mounted battery charges the second vehicle-mounted battery.
10. A charge and discharge detection system, comprising:
at least two cascaded electric vehicles as claimed in claim 9;
the first electric vehicle and the second electric vehicle are any two adjacent electric vehicles, the first electric vehicle comprises a first vehicle-mounted battery, the second electric vehicle comprises a second vehicle-mounted battery, and the first electric vehicle is used for detecting and displaying the charging and discharging parameters and the fault detection result of the second vehicle-mounted battery when the second vehicle-mounted battery is charged through the first vehicle-mounted battery.
CN201921438455.6U 2019-08-30 2019-08-30 Charging and discharging detection circuit, electric vehicle and charging and discharging detection system Active CN210792816U (en)

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