CN116111468A - Distribution box, control method and vehicle - Google Patents

Distribution box, control method and vehicle Download PDF

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Publication number
CN116111468A
CN116111468A CN202111334311.8A CN202111334311A CN116111468A CN 116111468 A CN116111468 A CN 116111468A CN 202111334311 A CN202111334311 A CN 202111334311A CN 116111468 A CN116111468 A CN 116111468A
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CN
China
Prior art keywords
mcu
intelligent switch
power
intelligent
distribution box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111334311.8A
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Chinese (zh)
Inventor
王海平
高云庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yihuatong Power Technology Co ltd
Original Assignee
Yihuatong Power Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yihuatong Power Technology Co ltd filed Critical Yihuatong Power Technology Co ltd
Priority to CN202111334311.8A priority Critical patent/CN116111468A/en
Publication of CN116111468A publication Critical patent/CN116111468A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The invention relates to the technical field of electric power distribution, in particular to a power distribution box, a control method and a vehicle, wherein the power distribution box comprises a power input interface, an overvoltage protection circuit, an MCU, an intelligent switch and an output interface corresponding to the intelligent switch; the power input interface is connected with the overvoltage protection circuit; the MCU comprises a power module and an MCU bus which are electrically connected, wherein the power module takes electricity through the overvoltage protection circuit, and the MCU bus controls power supply to the output interface; the power input interface supplies power for the intelligent switch; the invention adopts MCU control and intelligent switch, can monitor the load state in real time, raise the security; the intelligent switch has state feedback, and the fault protection mode adopts hardware protection and software protection; the intelligent power switch is adopted to replace the traditional fuse and mechanical relay, so that the intelligent power switch has small volume, no vulnerable part, no maintenance and high reliability; the volume power density of the system is improved, the wiring space is reduced, and the attractiveness of the system is improved.

Description

Distribution box, control method and vehicle
Technical Field
The invention relates to the technical field of electric power distribution, in particular to a power distribution box, a control method and a vehicle.
Background
Along with the continuous exposure of the problems of the traditional automobile such as the increasingly prominent pollution to the environment, long charging time, limited endurance mileage and the like of the pure electric automobile, the hydrogen fuel cell with zero pollution, high efficiency and long endurance mileage is widely applied to the field of automobiles.
The fuel cell car is as a new energy automobile, and the fuel cell engine is as the core part of driving system, and its inside electrical components needs low voltage distribution, and current traditional low voltage block terminal adopts fuse and mechanical relay to distribute power, and is bulky, unable real-time supervision load power consumption condition, no fault diagnosis and protect function need maintain.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the distribution box, the control method and the vehicle are maintenance-free, small in size and low in cost, so that the overall reliability and quality of products are improved.
In order to solve the technical problems, the first technical scheme adopted by the invention is as follows:
a distribution box comprises a power input interface, an overvoltage protection circuit, an MCU, a plurality of intelligent switches and a plurality of output interfaces corresponding to the intelligent switches;
the power input interface is connected with the overvoltage protection circuit; the output interface is correspondingly connected with the intelligent switch; the MCU comprises a power module and an MCU bus which are electrically connected, wherein the power module is powered through an overvoltage protection circuit, and the MCU bus controls power supply to an output interface;
the power input interface is electrically connected with the intelligent switch to supply power for the intelligent switch.
In order to solve the technical problems, the second technical scheme adopted by the invention is as follows:
the control method of the distribution box comprises the steps of powering up the distribution box;
the MCU is initialized, the intelligent switch feeds back the state of the intelligent switch, if the intelligent switch has a fault, the MCU issues a control disconnection instruction, and the intelligent switch stops working; if no fault exists, the MCU issues a control closing instruction, and the intelligent switch works normally;
the intelligent switch works normally, if the MCU issues a control disconnection instruction, the intelligent switch stops working; if the load connected to the output interface fails, judging the failure grade, if the grade is serious, stopping the intelligent switch, if the grade is warning, closing the MCU in a delayed manner according to the feedback state, and after the delay, issuing a control disconnection instruction by the MCU, wherein the intelligent switch stops working.
In order to solve the technical problems, a third technical scheme adopted by the invention is as follows:
a vehicle comprises the distribution box.
The invention has the beneficial effects that: the MCU control and the intelligent switch are adopted, so that the load state can be monitored in real time, and the safety of the system is improved; the intelligent switch has state feedback, and the fault protection mode adopts hardware protection and software protection; the multi-path input power interfaces are connected in series with the reverse connection prevention diode, and share one TVS tube for overvoltage protection, so that the cost is reduced and the reliability is improved; the intelligent power switch is adopted to replace the traditional fuse and mechanical relay, so that the intelligent power switch has small volume, no vulnerable part, no maintenance and high reliability; the volume power density of the system is improved, the wiring space is reduced, and the attractiveness of the system is improved.
Drawings
Fig. 1 is a schematic structural view of a distribution box according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of a distribution box according to an embodiment of the present invention.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, a power distribution box includes a power input interface, an overvoltage protection circuit, an MCU, a plurality of intelligent switches, and a plurality of output interfaces corresponding to the intelligent switches;
the power input interface is connected with the overvoltage protection circuit; the output interface is correspondingly connected with the intelligent switch; the MCU comprises a power module and an MCU bus which are electrically connected, wherein the power module is powered through an overvoltage protection circuit, and the MCU bus controls power supply to an output interface;
the power input interface is electrically connected with the intelligent switch to supply power for the intelligent switch.
From the above description, the MCU control and the intelligent switch are adopted to monitor the load state in real time, so that the system safety is improved; the intelligent switch has state feedback, and the fault protection mode adopts hardware protection and software protection; the multi-path input power interfaces are connected in series with the reverse connection prevention diode, and share one TVS tube for overvoltage protection, so that the cost is reduced and the reliability is improved; the intelligent power switch is adopted to replace the traditional fuse and mechanical relay, so that the intelligent power switch has small volume, no vulnerable part, no maintenance and high reliability; the volume power density of the system is improved, the wiring space is reduced, and the attractiveness of the system is improved. The intelligent switch has the hardware protection of over-temperature, over-voltage, under-voltage, load open circuit, short circuit and the like, the intelligent switch has multiple outputs, and relevant configuration output can be carried out according to different system functions, so that the expandability is strong.
Furthermore, the power input interfaces are provided with a plurality of groups, and the power interfaces share one group of overvoltage protection circuits.
From the above description, it is known that by sharing a set of overvoltage protection circuits, the cost can be reduced and the reliability can be provided.
Further, the power input interface is connected in series with an anti-reverse diode.
As is apparent from the above description, by the reverse connection preventing diode, damage to the load when the power source is reverse connected is prevented.
Further, the overvoltage protection circuit is a TVS tube.
Further, the distribution box further comprises a communication interface, and the communication interface is electrically connected with the MCU.
As can be seen from the above description, through the setting of the communication interface, the intelligent switch reports parameters such as the current of the load to the MCU through the bus, and the MCU can perform software policy protection through the reported information; the dual protection of hardware and software improves the reliability of the system.
Further, the communication interface is CANFD.
Further, the intelligent switch is of the type of Ing Fei Ling BTS71033-6ESA.
The control method of the distribution box comprises the steps of powering up the distribution box;
the MCU is initialized, the intelligent switch feeds back the state of the intelligent switch, if the intelligent switch has a fault, the MCU issues a control disconnection instruction, and the intelligent switch stops working; if no fault exists, the MCU issues a control closing instruction, and the intelligent switch works normally;
the intelligent switch works normally, if the MCU issues a control disconnection instruction, the intelligent switch stops working; if the load connected to the output interface fails, judging the failure grade, if the grade is serious, stopping the intelligent switch, if the grade is warning, closing the MCU in a delayed manner according to the feedback state, and after the delay, issuing a control disconnection instruction by the MCU, wherein the intelligent switch stops working.
Furthermore, the MCU reports the status information of the distribution box to the vehicle controller through the communication interface.
From the above description, it is apparent that by reporting the electrical box status information, the vehicle controller can perform active intervention control to provide safety and reliability of the overall fuel cell system.
A vehicle comprises the distribution box.
Example 1
The distribution box is characterized by comprising a power input interface, an overvoltage protection circuit, an MCU, a plurality of intelligent switches and a plurality of output interfaces corresponding to the intelligent switches;
the power input interface is connected with the overvoltage protection circuit; the output interface is correspondingly connected with the intelligent switch; the MCU comprises a power module and an MCU bus which are electrically connected, wherein the power module is powered through an overvoltage protection circuit, and the MCU bus controls power supply to an output interface;
the power input interface is electrically connected with the intelligent switch to supply power for the intelligent switch.
The power input interfaces are provided with a plurality of groups, and the power interfaces share one group of overvoltage protection circuits.
The power input interface is connected in series with an anti-reverse diode.
The overvoltage protection circuit is a TVS tube.
The distribution box further comprises a communication interface, and the communication interface is electrically connected with the MCU.
The communication interface is CANFD.
The intelligent switch is of the type of Infrax BTS71033-6ESA.
Example two
A vehicle comprising the electrical box of embodiment one.
Example III
A control method of a power distribution box according to an embodiment includes
Low voltage is applied;
initializing an MCU;
the intelligent switch feeds back the state of the intelligent switch; if the intelligent switch fails, the MCU issues a control disconnection instruction, and the intelligent switch stops working; if no fault exists, the MCU issues a control closing instruction, and the intelligent switch works normally;
the intelligent switch works normally, if the MCU issues a control disconnection instruction, the intelligent switch stops working; if the load connected to the output interface fails, judging the failure grade, if the grade is serious, stopping the intelligent switch, if the grade is warning, closing the MCU in a delayed manner according to the feedback state, and after the delay, issuing a control disconnection instruction by the MCU, wherein the intelligent switch stops working.
The MCU reports the distribution box state information to the vehicle controller through the communication interface.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.

Claims (10)

1. The distribution box is characterized by comprising a power input interface, an overvoltage protection circuit, an MCU, a plurality of intelligent switches and a plurality of output interfaces corresponding to the intelligent switches;
the power input interface is connected with the overvoltage protection circuit; the output interface is correspondingly connected with the intelligent switch; the MCU comprises a power module and an MCU bus which are electrically connected, wherein the power module is powered through an overvoltage protection circuit, and the MCU bus controls power supply to an output interface;
the power input interface is electrically connected with the intelligent switch to supply power for the intelligent switch.
2. The electrical box of claim 1, wherein the power input interfaces have a plurality of groups, the plurality of groups of power interfaces sharing a set of overvoltage protection circuits.
3. The electrical box of claim 1, wherein the power input interface is connected in series with an anti-reverse diode.
4. The electrical box of claim 1, wherein the overvoltage protection circuit is a TVS tube.
5. The electrical box of claim 1, further comprising a communication interface, the communication interface being electrically connected to the MCU.
6. The electrical box of claim 5, wherein the communication interface is CANFD.
7. The electrical box of any of claims 1-6, wherein the intelligent switch is model number inflight BTS71033-6ESA.
8. A vehicle comprising a power distribution box according to any one of claims 1-7.
9. A control method of a distribution box according to any one of claims 1 to 7, characterized by comprising the distribution box being powered on;
the MCU is initialized, the intelligent switch feeds back the state of the intelligent switch, if the intelligent switch has a fault, the MCU issues a control disconnection instruction, and the intelligent switch stops working; if no fault exists, the MCU issues a control closing instruction, and the intelligent switch works normally;
the intelligent switch works normally, if the MCU issues a control disconnection instruction, the intelligent switch stops working; if the load connected to the output interface fails, judging the failure grade, if the grade is serious, stopping the intelligent switch, if the grade is warning, closing the MCU in a delayed manner according to the feedback state, and after the delay, issuing a control disconnection instruction by the MCU, wherein the intelligent switch stops working.
10. The method of claim 9, wherein the MCU reports the distribution box status information to the vehicle controller via the communication interface.
CN202111334311.8A 2021-11-11 2021-11-11 Distribution box, control method and vehicle Pending CN116111468A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111334311.8A CN116111468A (en) 2021-11-11 2021-11-11 Distribution box, control method and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111334311.8A CN116111468A (en) 2021-11-11 2021-11-11 Distribution box, control method and vehicle

Publications (1)

Publication Number Publication Date
CN116111468A true CN116111468A (en) 2023-05-12

Family

ID=86253239

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111334311.8A Pending CN116111468A (en) 2021-11-11 2021-11-11 Distribution box, control method and vehicle

Country Status (1)

Country Link
CN (1) CN116111468A (en)

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