CN110539712B - Power distribution protection method of intelligent vehicle-mounted power distribution box system - Google Patents
Power distribution protection method of intelligent vehicle-mounted power distribution box system Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0238—Electrical distribution centers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0239—Electronic boxes
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Abstract
The invention discloses a power distribution protection method of an intelligent vehicle-mounted power distribution box system, wherein the intelligent vehicle-mounted power distribution box system comprises one or more power distribution boxes, each power distribution box comprises a main control unit, a digital signal interface unit, an incoming line control unit and an outgoing line control unit, the digital signal interface unit, the incoming line control unit and the outgoing line control unit are all connected with the main control unit, the input end of the main control unit is connected with an incoming line detection unit and an outgoing line detection unit, the output end of the incoming line control unit is connected with a power incoming line interface unit, the power incoming line interface unit is connected with the input end of the incoming line detection unit, the output end of the outgoing line control unit is connected with a power outgoing line interface unit, and the power outgoing line interface unit. The system has the advantages of simple structure, reasonable design, convenience in implementation, good universality, high safety, good use effect and convenience in popularization and use, and can be effectively applied to vehicle-mounted power distribution.
Description
Technical Field
The invention belongs to the technical field of automotive electronics, and particularly relates to a power distribution protection method of an intelligent vehicle-mounted power distribution box system.
Background
In the prior art, a vehicle distribution box is generally composed of a vehicle safety piece, a relay, an outgoing line connector and the like. The vehicle-mounted distribution box distributes the output of a vehicle-mounted (12V or 24V) battery and a vehicle-mounted generator according to the current of the vehicle-mounted electrical equipment, and simultaneously uses a fuse piece or a fuse to limit the current of the vehicle-mounted electrical equipment. The electrical apparatus that has control function in the car can control the electric circuit who installs the relay through the relay of installation on the on-vehicle block terminal of control, because the volume and the price problem of relay, only can use in great return circuit usually.
Each electric loop distributed by the existing vehicle-mounted distribution box is limited by the specifications of a safety sheet or a safety fuse, generally 2A, 3A, 5A, 7.5A, 10A, 15A, 20A, 25A, 30A, 35A, 40A and the like, only the safety sheet or the safety fuse which is close to the actual current peak value of the vehicle-mounted electric appliance and is larger than the peak current can be selected during matching, the peak power of the electric appliance cannot be accurately matched, particularly the electric appliance of which the actual peak current just exceeds the rated current of a certain safety sheet only can select the safety sheet of a first gear, and the protection which can be provided by the distribution box in the worst case exceeds the peak current of the electric appliance by about 5A, so that the timely fusing protection cannot be provided. After the fault safety piece is fused in the power supply loop of the electric appliance for the vehicle, the safety piece is manually replaced, and the fault loop needs to be measured during replacement, so that the replacement can be carried out only after the fault is eliminated. Meanwhile, the existing vehicle-mounted distribution box is large in physical size, and the installation position is difficult to process in the vehicle design process, so that the existing vehicle-mounted distribution box is a component which is difficult to process in the electric design of the whole vehicle. Meanwhile, the weight is heavier, and the requirement is not in accordance with the light weight advocated by the current vehicle design.
At present in the in-service use, vehicle driver installs electrical apparatus without authorization because of personal reason, improves current return circuit capacity through the rupture disc or the fuse of changing big rated current under the unsatisfactory condition of former factory design, and although rupture disc capacity promotes, the use demand after the design capacity mismatch repacking of former car pencil can cause the circuit to generate heat, even catch fire, can cause some safety risks. The electrical demand of different motorcycle types is different, leads to every car all to have different block terminal, needs to spend manpower, material resources to manage to the car factory.
Disclosure of Invention
The invention aims to solve the technical problem of providing an intelligent vehicle-mounted distribution box system aiming at the defects in the prior art, which has the advantages of simple structure, reasonable design, convenient realization, good universality, high safety, good use effect and convenient popularization and use, and can be effectively applied to vehicle-mounted power distribution.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides an on-vehicle block terminal system of intelligence, on-vehicle block terminal system of intelligence includes one or more block terminal, every the block terminal all includes main control unit, digital signal interface unit, inlet wire control unit and the control unit of being qualified for the next round of competitions all meet with the main control unit, the input termination of main control unit has inlet wire detecting element and the detecting element of being qualified for the next round of competitions, the output termination of inlet wire control unit has power inlet wire interface unit, power inlet wire interface unit is connected with inlet wire detecting element's input, the output termination of the control unit of being qualified for the next round of competitions has power outlet wire interface unit, power outlet.
In the above intelligent vehicle-mounted distribution box system, a plurality of distribution boxes are connected and communicated with each other through the digital signal interface unit.
The intelligent vehicle-mounted distribution box system comprises a main control unit and a main control unit, wherein the main control unit comprises an MCU control panel.
In the above intelligent vehicle-mounted distribution box system, the digital signal interface unit includes one or more digital input/output modules, and one or more fault state detection modules corresponding to the one or more digital input/output modules.
According to the intelligent vehicle-mounted distribution box system, the incoming line control unit and the outgoing line control unit respectively comprise one or more power control modules, and each power control module comprises a power transistor for completing loop control.
The above-mentioned on-vehicle block terminal system of intelligence, inlet wire detecting element and the detecting element that is qualified for the next round of competitions all include one or more detection module, every detection module all includes one or more detection sensor.
In the above intelligent vehicle-mounted distribution box system, the power inlet interface unit includes one or more power inlet connectors; the power outlet interface unit comprises one or more power outlet connectors.
The invention also discloses a power distribution protection method of the intelligent vehicle-mounted distribution box system, which can meet the requirement of adding user electrical appliances and ensure the safety of the vehicle electrical loop, and the method comprises the following steps:
step one, configuring a loop physical protection current:
the main control unit performs protection current configuration according to the current limit value of the physical layer of each loop, and stores the current limit value of the physical layer as loop protection current;
step two, identifying load characteristics:
the main control unit collects voltage and current of a load connected with the power outlet interface unit through the outlet detection unit and identifies load characteristics through collection results;
step three, checking and updating a load characteristic configuration table:
the main control unit checks the load characteristic configuration table, and when the load characteristic configuration table is empty, the main control unit writes the current load characteristic identification result into the empty load characteristic configuration table; when the load characteristic configuration table is not empty, the main control unit compares the current load characteristic identification result with the load characteristics stored in the load characteristic configuration table, when the comparison result is the same, the load characteristic configuration table is not updated, and when the comparison result is different, the main control unit updates and writes the current load characteristic identification result into the load characteristic configuration table;
step four, judging whether the power output reduction requirement exists:
the main control unit is connected with and communicates with the vehicle electronic control unit through the digital signal interface unit to acquire whether the vehicle has a demand of a distribution box for load power reduction output, and when the demand of power reduction output exists, the fifth step is executed; when the power output is not required to be reduced, executing a step six;
step five, power output control:
the main control unit controls the power output of the load connected with the power outlet interface unit through the outlet control unit according to the load characteristic configuration table in the step three;
step six, loop current limiting protection:
and when the outgoing line detection unit detects that the current value in the loop exceeds the loop protection current in the step one, the main control unit performs loop current-limiting protection through the outgoing line control unit.
In the second step, the main control unit collects the voltage and the current of the load connected to the power outlet interface unit through the outlet detection unit, and the specific steps of identifying the load characteristics through the collection result are as follows:
step 201, the outgoing line detection unit collects a voltage value and a current value in a main path of a load;
step 202, the main control unit obtains a voltage value and a current value acquired by the outgoing line detection unit and performs Fourier calculation to obtain a phase difference of the current in the loop relative to the voltage;
step 203, when the phase difference is 90 degrees, the main control unit identifies the load connected with the power outlet interface unit as a capacitive load; when the phase difference is 0 degrees, the main control unit identifies the load connected with the power outlet interface unit as a resistive load; when the phase difference is-90 degrees, the main control unit identifies the load connected with the power outlet interface unit as an inductive load.
In the power distribution protection method of the intelligent vehicle-mounted power distribution box system, in the fifth step, the specific process of performing power output control on the load connected to the power outlet interface unit through the outlet control unit according to the load characteristic configuration table in the third step is as follows: when the load connected with the power outlet interface unit is a resistive load, the main control unit performs current reduction and voltage stabilization control on the resistive load through the outlet control unit; when the load connected with the power outgoing line interface unit is a capacitive load, the main control unit carries out delay turn-off control on the capacitive load through the outgoing line control unit; when the load connected with the power outlet interface unit is an inductive load, the main control unit immediately switches off the inductive load through the outlet control unit; when the outgoing line detection unit detects that the current value in the loop exceeds the loop protection current in the first step, the specific process of the main control unit performing loop current limiting protection through the outgoing line control unit is as follows: when the load connected with the power outgoing line interface unit is a resistive load or a capacitive load, the main control unit delays and turns off the loads through the outgoing line control unit; when the load connected with the power outlet interface unit is an inductive load, the main control unit immediately switches off the load through the outlet control unit.
Compared with the prior art, the invention has the following advantages:
1. the intelligent vehicle-mounted distribution box system is simple in structure, reasonable in design and convenient to realize.
2. The distribution box provided by the invention can be used on the same vehicle according to the requirements while interacting with the whole vehicle, and the distribution boxes can interact information and are matched with each other, so that the distribution box is flexible to expand and good in universality.
3. The power control module of the invention adopts the power transistor to control the on-off of the loop, fuses the functions of the fuse and the relay of the existing distribution box, reduces the physical size of the single loop and greatly reduces the weight of the single loop.
4. The distribution protection method can be configured according to the actual peak current of the load, combines the characteristics of the loop load, implements different protections aiming at inductive load, capacitive load and resistive load, and can independently configure the protection current of a specific loop aiming at the requirement of adding an electric appliance by a user, thereby not only meeting the requirement of adding the electric appliance by the user, but also ensuring the safety of the electric loop of the vehicle.
5. The invention can be effectively applied to vehicle-mounted power distribution, has high safety and good use effect, and is convenient to popularize and use.
In conclusion, the system disclosed by the invention is simple in structure, reasonable in design, convenient to implement, good in universality, high in safety, good in using effect and convenient to popularize and use, and can be effectively applied to vehicle-mounted power distribution.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic block diagram of an intelligent vehicle distribution box system of the present invention;
fig. 2 is a method flow diagram of a power distribution protection method of the intelligent vehicle-mounted distribution box system according to the present invention.
Description of reference numerals:
1-a master control unit; 2-a digital signal interface unit; 3-an incoming line control unit;
4-a line outgoing control unit; 5, an incoming line detection unit; 6-an outgoing line detection unit;
7-power incoming line interface unit; 8-power outlet interface unit.
Detailed Description
As shown in fig. 1, the intelligent vehicle-mounted distribution box system of the invention comprises one or more distribution boxes, each of which comprises a main control unit 1, a digital signal interface unit 2, an incoming line control unit 3 and an outgoing line control unit 4, wherein the digital signal interface unit 2, the incoming line control unit 3 and the outgoing line control unit 4 are all connected with the main control unit 1, the input end of the main control unit 1 is connected with an incoming line detection unit 5 and an outgoing line detection unit 6, the output end of the incoming line control unit 3 is connected with a power incoming line interface unit 7, the power incoming line interface unit 7 is connected with the input end of the incoming line detection unit 5, the output end of the outgoing line control unit 4 is connected with a power outgoing line interface unit 8, and the power outgoing line interface unit 8 is connected with the input end of the outgoing line detection unit 6.
In this embodiment, a plurality of the distribution boxes are connected and communicate with each other through the digital signal interface unit 2.
In this embodiment, the main control unit 1 includes an MCU control board.
In specific implementation, the MCU control panel comprises one or more of a singlechip minimum system, an SOC system, a DSP system and an FPGA system.
In this embodiment, the digital signal interface unit 2 includes one or more digital input/output modules, and one or more fault state detection modules corresponding to the one or more digital input/output modules.
In specific implementation, the digital quantity input and output module adopts one or more of a CAN bus module, a LIN bus module and other vehicle-mounted communication bus modules.
In this embodiment, the incoming line control unit 3 and the outgoing line control unit 4 each include one or more power control modules, and each of the power control modules includes a power transistor for completing loop control.
In this embodiment, the incoming line detection unit 5 and the outgoing line detection unit 6 each include one or more detection modules, and each of the detection modules includes one or more detection sensors.
In specific implementation, the incoming line signal detected by the incoming line detection unit 5 includes one or more of voltage, current, frequency, temperature and fault type of the incoming line loop; the outgoing line signal detected by the outgoing line detection unit 6 comprises one or more of voltage, current, frequency, temperature, no-load and fault types of the outgoing line loop, and the detection sensors comprise an electric quantity sensor for detecting the voltage, the current and the frequency and a temperature sensor for detecting the temperature.
In this embodiment, the power incoming line interface unit 7 includes one or more power incoming line connectors; the power outlet interface unit 8 includes one or more power outlet connectors.
The power distribution protection method comprises the following steps:
step one, configuring a loop physical protection current:
the main control unit 1 performs protection current configuration according to the current limit value of the physical layer of each loop, and the main control unit 1 stores the current limit value of the physical layer as loop protection current;
for example, if the allowable rated current of the channel MOSFET is 40A, the maximum overcurrent capacity of the cable is 50A, and the maximum overcurrent capacity of the connector terminal is 60A, the actual physical extreme value of the loop is 40A, and the configured loop protection current is 40A; aiming at a loop of an electric appliance added by a user, the protection current of the loop can be configured independently according to the current limit value of the physical layer.
Step two, identifying load characteristics:
the main control unit 1 collects voltage and current of a load connected with the power outlet interface unit 8 through the outlet detection unit 6, and identifies the load characteristic through the collection result;
step three, checking and updating a load characteristic configuration table:
the main control unit 1 checks a load characteristic configuration table, and when the load characteristic configuration table is empty, the main control unit 1 writes the current load characteristic identification result into the empty load characteristic configuration table; when the load characteristic configuration table is not empty, the main control unit 1 compares the current load characteristic identification result with the load characteristics stored in the load characteristic configuration table, when the comparison result is the same, the load characteristic configuration table is not updated, and when the comparison result is different, the main control unit 1 updates and writes the current load characteristic identification result into the load characteristic configuration table;
step four, judging whether the power output reduction requirement exists:
the main control unit 1 is connected with and communicates with a vehicle electronic control unit through a digital signal interface unit 2, whether a vehicle has a demand of a distribution box for load power reduction output is obtained, and when the demand of power reduction output exists, a fifth step is executed; when the power output is not required to be reduced, executing a step six;
step five, power output control:
the main control unit 1 controls the power output of the load connected to the power outlet interface unit 8 through the outlet control unit 4 according to the load characteristic configuration table in the third step;
step six, loop current limiting protection:
and when the outgoing line detection unit 6 detects that the current value in the loop exceeds the loop protection current in the step one, the main control unit 1 performs loop current-limiting protection through the outgoing line control unit 4.
In the second step of the method, the main control unit 1 collects the voltage and the current of the load connected with the power outlet interface unit 8 through the outlet detection unit 6, and the specific steps of identifying the load characteristics through the collection result are as follows:
step 201, the outgoing line detection unit 6 collects a voltage value and a current value in a main path of a load;
step 202, the main control unit 1 obtains the voltage value and the current value acquired by the outgoing line detection unit 6 and performs Fourier calculation to obtain the phase difference of the current in the loop relative to the voltage;
step 203, when the phase difference is 90 degrees, the main control unit 1 identifies the load connected with the power outlet interface unit 8 as a capacitive load; when the phase difference is 0 degrees, the main control unit 1 identifies the load connected with the power outlet interface unit 8 as a resistive load; when the phase difference is-90 degrees, the main control unit 1 identifies the load connected with the power outlet interface unit 8 as an inductive load.
In the fifth step of the method, the specific process of the main control unit 1 performing power output control on the load connected to the power outlet interface unit 8 through the outlet control unit 4 according to the load characteristic configuration table in the third step is as follows: when the load connected with the power outlet interface unit 8 is a resistive load, the main control unit 1 performs current reduction and voltage stabilization control on the resistive load through the outlet control unit 4; when the load connected with the power outgoing line interface unit 8 is a capacitive load, the main control unit 1 performs delay turn-off control on the capacitive load through the outgoing line control unit 4; when the load connected with the power outlet interface unit 8 is an inductive load, the main control unit 1 immediately switches off the inductive load through the outlet control unit 4; when the outgoing line detection unit 6 detects that the current value in the loop exceeds the loop protection current in the step one in the sixth step, the specific process of the main control unit 1 performing loop current limiting protection through the outgoing line control unit 4 is as follows: when the load connected with the power outgoing line interface unit 8 is a resistive load or a capacitive load, the main control unit 1 performs delay turn-off on the loads through the outgoing line control unit 4; when the load connected to the power outlet interface unit 8 is an inductive load, the main control unit 1 immediately turns off the load through the outlet control unit 4.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A power distribution protection method of an intelligent vehicle-mounted power distribution box system comprises one or more power distribution boxes, each power distribution box comprises a main control unit (1), a digital signal interface unit (2), an incoming line control unit (3) and an outgoing line control unit (4), the digital signal interface unit (2), the incoming line control unit (3) and the outgoing line control unit (4) are all connected with the main control unit (1), the input end of the main control unit (1) is connected with an incoming line detection unit (5) and an outgoing line detection unit (6), the output end of the incoming line control unit (3) is connected with a power incoming line interface unit (7), the power inlet wire interface unit (7) is connected with the input end of the inlet wire detection unit (5), the output end of the outgoing line control unit (4) is connected with a power outgoing line interface unit (8), the power outgoing line interface unit (8) is connected with the input end of the outgoing line detection unit (6); the method is characterized by comprising the following steps:
step one, configuring a loop physical protection current:
the main control unit (1) performs protection current configuration according to the current limit value of the physical layer of each loop, and the main control unit (1) stores the current limit value of the physical layer as loop protection current;
step two, identifying load characteristics:
the main control unit (1) collects voltage and current of a load connected with the power outlet interface unit (8) through the outlet detection unit (6), and identifies load characteristics through collection results;
step three, checking and updating a load characteristic configuration table:
the main control unit (1) checks a load characteristic configuration table, and when the load characteristic configuration table is empty, the main control unit (1) writes the current load characteristic identification result into the empty load characteristic configuration table; when the load characteristic configuration table is not empty, the main control unit (1) compares the current load characteristic identification result with the load characteristics stored in the load characteristic configuration table, when the comparison result is the same, the load characteristic configuration table is not updated, and when the comparison result is different, the main control unit (1) updates and writes the current load characteristic identification result into the load characteristic configuration table;
step four, judging whether the power output reduction requirement exists:
the main control unit (1) is connected with and communicates with the vehicle electronic control unit through the digital signal interface unit (2), whether a vehicle has a demand of a distribution box for load power reduction output is obtained, and when the demand of power reduction output exists, a fifth step is executed; when the power output is not required to be reduced, executing a step six;
step five, power output control:
the main control unit (1) controls the power output of the load connected with the power outlet interface unit (8) through the outlet control unit (4) according to the load characteristic configuration table in the step three;
step six, loop current limiting protection:
and when the outgoing line detection unit (6) detects that the current value in the loop exceeds the loop protection current in the step one, the main control unit (1) performs loop current limiting protection through the outgoing line control unit (4).
2. The power distribution protection method of the intelligent vehicle-mounted distribution box system according to claim 1, characterized in that: a plurality of the distribution boxes are connected and communicated through a digital signal interface unit (2).
3. The power distribution protection method of the intelligent vehicle-mounted distribution box system according to claim 1, characterized in that: the main control unit (1) comprises an MCU control panel.
4. The power distribution protection method of the intelligent vehicle-mounted distribution box system according to claim 1, characterized in that: the digital signal interface unit (2) comprises one or more digital input/output modules and one or more fault state detection modules corresponding to the one or more digital input/output modules.
5. The power distribution protection method of the intelligent vehicle-mounted distribution box system according to claim 1, characterized in that: the incoming line control unit (3) and the outgoing line control unit (4) both comprise one or more power control modules, and each power control module comprises a power transistor for completing loop control.
6. The power distribution protection method of the intelligent vehicle-mounted distribution box system according to claim 1, characterized in that: the incoming line detection unit (5) and the outgoing line detection unit (6) both comprise one or more detection modules, and each detection module comprises one or more detection sensors.
7. The power distribution protection method of the intelligent vehicle-mounted distribution box system according to claim 1, characterized in that: the power incoming line interface unit (7) comprises one or more power incoming line connectors; the power outlet interface unit (8) comprises one or more power outlet connectors.
8. The power distribution protection method of the intelligent vehicle-mounted distribution box system according to claim 1, characterized in that: in the second step, the main control unit (1) collects the voltage and the current of the load connected with the power outlet interface unit (8) through the outlet detection unit (6), and the specific steps of identifying the load characteristics through the collection result are as follows:
step 201, the outgoing line detection unit (6) collects a voltage value and a current value in a main path of a load;
step 202, the main control unit (1) obtains a voltage value and a current value acquired by the outgoing line detection unit (6) and performs Fourier calculation to obtain a phase difference of the current in the loop relative to the voltage;
step 203, when the phase difference is 90 degrees, the main control unit (1) identifies the load connected with the power outlet interface unit (8) as a capacitive load; when the phase difference is 0 degrees, the main control unit (1) identifies the load connected with the power outlet interface unit (8) as a resistive load; when the phase difference is-90 degrees, the main control unit (1) identifies the load connected with the power outlet interface unit (8) as an inductive load.
9. The power distribution protection method of the intelligent vehicle-mounted distribution box system according to claim 8, wherein: in the fifth step, the specific process of the main control unit (1) performing power output control on the load connected with the power outlet interface unit (8) through the outlet control unit (4) according to the load characteristic configuration table in the third step is as follows: when the load connected with the power outlet interface unit (8) is a resistive load, the main control unit (1) performs current reduction and voltage stabilization control on the resistive load through the outlet control unit (4); when the load connected with the power outgoing line interface unit (8) is a capacitive load, the main control unit (1) performs delay turn-off control on the capacitive load through the outgoing line control unit (4); when the load connected with the power outlet interface unit (8) is an inductive load, the main control unit (1) immediately switches off the inductive load through the outlet control unit (4); when the outgoing line detection unit (6) detects that the current value in the loop exceeds the loop protection current in the first step, the specific process of performing loop current-limiting protection on the main control unit (1) through the outgoing line control unit (4) is as follows: when the load connected with the power outgoing line interface unit (8) is a resistive load or a capacitive load, the main control unit (1) conducts delay turn-off on the loads through the outgoing line control unit (4); when the load connected with the power outgoing line interface unit (8) is an inductive load, the main control unit (1) immediately switches off the load through the outgoing line control unit (4).
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| CN107839485A (en) * | 2017-10-26 | 2018-03-27 | 杭州泰宏新能源技术有限公司 | The high tension distribution system of integrated BMS modules |
| KR20190092970A (en) * | 2018-01-31 | 2019-08-08 | 영화테크(주) | Junction box for vehicle |
| CN209008516U (en) * | 2018-08-10 | 2019-06-21 | 湖南二木新能源科技有限公司 | A kind of electric automobile high-voltage block terminal |
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| CN110539712A (en) | 2019-12-06 |
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