WO2022198746A1

WO2022198746A1 - Switch control electrical box and power distribution method

Info

Publication number: WO2022198746A1
Application number: PCT/CN2021/090560
Authority: WO
Inventors: 胡广举; 刘洋; 孔令宾
Original assignee: 新乡市光明电器有限公司
Priority date: 2021-03-25
Filing date: 2021-04-28
Publication date: 2022-09-29
Also published as: CN112864821A

Abstract

Disclosed in the present invention are a switch control electrical box and a power distribution method. The switch control electrical box comprises a housing. A conductive slat used for supplying power to MOS transistors in a centralized manner is embedded on a circuit board in the housing. Therefore, the MOS transistors serving as switches in the switch control electrical box can be compactly mounted on the circuit board, such that the switch control electrical box is small in size while having a plurality of switch control circuits; and when the switch control electrical box is used on an electrical device such as a vehicle, the occupied space is small, and the mounting is more flexible. Because the power distribution method in the present invention relates to supplying power in the centralized manner by means of the conductive slat, the heating of the switch control electrical box is mainly concentrated on the conductive slat. By providing a conductive slat heat sink on one side of the housing, most of the heat generated by the switch control electrical box can be dissipated in time; and the conductive slat is erected on the conductive slat heat sink in a rib form, which is more conducive to heat dissipation, thereby preventing failure caused by overheating during use and prolonging the service life.

Description

Switch control electrical box and power distribution method

technical field

The invention relates to the technical field of electrical boxes, in particular to a switch-controlled electrical box and a power distribution method.

Background technique

For electrified products equipped with multiple electrical devices, such as vehicles, it is generally necessary to connect the battery and each electrical device through an electrical box that can control multiple on-off, so as to supply power to each electrical device or control circuit breakage in time. Open, the existing electrical box that can realize this function generally realizes the purpose of controlling each electrical equipment by setting a plurality of relays in the box, and controlling the on-off of the relays. Therefore, it is necessary to design a switch control electrical box to overcome the above shortcomings.

SUMMARY OF THE INVENTION

The present invention aims to provide a switch control electrical box, which solves the technical problems of large volume, poor heat dissipation and inconvenient maintenance of the switch control box in the prior art.

In order to solve the above-mentioned technical problems, the first aspect of the present invention is:

A switch control electrical box is designed, including a casing, a circuit board is arranged in the casing, a conductive strip for centralized power supply is embedded on the circuit board, and a conductive strip is arranged on one side of the casing a heat sink, the casing is provided with an electrical input copper bar that is electrically connected to the conductive strip; a plurality of MOS tubes are arranged on the circuit board, and the input ends of the MOS tubes are all electrically connected to the A conductive strip, a power distribution interface is provided on the casing, and a plurality of electrical output pins are arranged in the power distribution interface, and the electrical output pins are correspondingly electrically connected to the output end of the MOS tube; the power distribution The interface is also provided with a plurality of control pins, a processor is provided on the circuit board, the control pins are correspondingly electrically connected to the processor, and the processor is connected to the control end of the MOS tube corresponding to a signal .

Preferably, the circuit board includes an upper circuit board and a lower circuit board, the lower ends of the control pins are welded on the upper circuit board, the lower ends of the electrical output pins are welded on the lower circuit board, and the upper The circuit board is provided with via holes corresponding to the electrical output pins, and the middle of the electrical output pins is provided with a stepped portion for supporting the upper circuit board.

Preferably, the conductive strips are embedded in the lower circuit board, each of the MOS transistors is arranged on the lower circuit board, the processor is arranged on the upper circuit board, and the upper circuit board A communication plug is arranged on the bottom surface, a communication socket is correspondingly arranged on the upper surface of the lower circuit board, and the communication plug is inserted into the communication socket.

Preferably, some of the electrical output pins in the power distribution interface are electrically connected to the corresponding MOS transistors through circuits in the lower circuit board, and the rest of the electrical output pins are electrically connected through jumper wires arranged on the lower circuit board to the corresponding MOS tube.

Preferably, a power distribution bin is provided between the upper-layer circuit board and the lower-layer circuit board, the upper-layer circuit board is provided with a first gap corresponding to the power distribution bin, and the casing is provided with a second corresponding A notch is formed, and a top cover corresponding to the second notch is arranged on the casing; the electrical input copper bar is arranged in the power distribution compartment.

Preferably, an electrical output copper bar is further arranged in the power distribution bin, a parallel MOS transistor is arranged on the circuit board, and the electrical output copper bar is electrically connected to the output end of the parallel MOS transistor.

Preferably, a thermally conductive insulating pad is provided on the bottom surface of the conductive strip, a rib corresponding to the conductive strip is provided on the heat dissipation plate of the conductive strip, and the conductive strip is separated from the thermally conductive and insulating pad. A sheet is placed on the rib.

Preferably, the MOS transistor has a feedback terminal, and the feedback terminal is connected to the processor corresponding to the signal.

Preferably, there are multiple processors and power distribution interfaces.

A second aspect of the present invention is:

Design a power distribution method for a switch-controlled electrical box according to any one of the first aspects of the present invention, comprising:

Centrally supply power to each of the MOS transistors through the conductive strips embedded on the circuit board;

After the electrical input copper bar is powered on, a part of the electrical output pins can output current directly, and a part of the electrical output pins can be powered on or off after obtaining a control signal through the control pins;

When the current in a certain MOS tube exceeds the limit, the feedback terminal of the MOS tube sends a signal to the processor, and the processor sends a signal to control the MOS tube to be disconnected.

The main beneficial technical effects of the present invention are:

1. The switch control electrical box provided by the present invention is embedded with conductive strips for supplying power for each MOS tube on the circuit board in the casing. Therefore, each MOS tube used as a switch inside the switch control electrical box can be compared. It is compactly installed on the circuit board, so that the switch control electrical box has a multi-way switch control circuit, and at the same time, the volume is very small. When used on electrical equipment such as vehicles, it occupies a small space and is more flexible in installation. It is similar to other electrical boxes. than, greatly improving the competitiveness.

2. Since the power distribution method of the present invention is centralized power supply through the conductive strips, the heat of the switch control electrical box is mainly concentrated on the conductive strips. Most of the heat generated by the switch control electrical box is dissipated, and the conductive slats are raised on the conductive slat cooling plate, which is more conducive to heat dissipation, prevents failure due to overheating during use, and ensures a long service life.

3. There is a stepped part in the middle of the electrical output pin for supporting the upper circuit board, and the via hole on the upper circuit board passes through the electrical output pin correspondingly, and the lower surface of the upper circuit board is supported on the stepped part, so that the upper circuit board and the The electrical output pins can be disassembled, and the communication connectors between the upper circuit board and the lower circuit board can also be separated. Therefore, the upper circuit board and the lower circuit board can be disassembled later to facilitate the quality inspection and maintenance of the lower circuit board.

4. By arranging parallel MOS tubes on the circuit board, and arranging an electrical output copper bar electrically connected to the parallel MOS tubes, it is possible to supply power for high-power loads and increase the application range of the switch control electrical box.

5. Part of the MOS tubes in the switch control electrical box can be directly turned on, and the other part of the MOS is controlled by control signals. Therefore, it can meet the needs of different loads in electrical equipment such as automobiles.

Description of drawings

FIG. 1 is a schematic three-dimensional structural diagram of an embodiment of a switch control electrical box according to the present invention.

2 is a schematic structural diagram of a double-layer circuit board in an embodiment of the switch control electrical box of the present invention.

3 is a schematic structural diagram of a lower circuit board in an embodiment of a switch control electrical box according to the present invention.

FIG. 4 is a schematic diagram of the internal structure of an embodiment of the switch control electrical box according to the present invention.

5 is a schematic structural diagram of an embodiment of the switch control electrical box of the present invention when the top cover is removed.

6 is a schematic three-dimensional structural diagram of a power distribution compartment in an embodiment of a switch control electrical box of the present invention.

7 is an exploded view of an electrical input copper bar and an electrical output copper bar in an embodiment of the switch control electrical box of the present invention.

8 is a schematic structural diagram of a sealing ring in a power distribution compartment in an embodiment of a switch control electrical box of the present invention.

9 is an exploded view of a communication connector in an embodiment of the switch control electrical box of the present invention.

10 is a schematic three-dimensional structural diagram of an electrical output pin and a control pin in an embodiment of the switch control electrical box of the present invention.

FIG. 11 is a schematic diagram of the bottom structure of an embodiment of a switch control electrical box according to the present invention.

FIG. 12 is a schematic diagram of the positional relationship between the conductive strips and the heat dissipation plate of the conductive strips in an embodiment of the switch control electrical box of the present invention.

13 is a schematic structural diagram of a third sealing ring in an embodiment of the switch control electrical box of the present invention.

FIG. 14 is a schematic three-dimensional structural diagram of another embodiment of the switch control electrical box according to the present invention.

In the above figures, the symbols are indicated as: shell 1, second notch 11, top cover 12, hinge seat 121, buckle 122, wiring hole 123, power distribution interface 2, electrical output pin 21, step portion 211, positioning Step portion 212, control pin 22, positioning step portion 221, upper circuit board 3, first notch 31, lower circuit board 4, MOS tube 41, conductive strip 42, electrical connection point 421, electrical input copper bar 43, electrical Input terminal 431, first sub-copper row 432, first sub-terminal 433, first pin 434, electrical output copper row 44, electrical output terminal 441, second sub-copper row 442, second sub-terminal 443, The second pin 444, the parallel copper bar 445, the parallel MOS tube 45, the communication connector 46, the communication plug 461, the communication socket 462, the jumper wire 47, the second sealing groove 48, the third sealing ring 49, the power distribution bin 5, the ear The seat 51 , the partition plate 52 , the notch 53 , the plug-in port 54 , the first sealing ring 55 , the second sealing ring 56 , the first sealing groove 57 , the conductive strip radiating plate 6 , and the rib 61 .

Detailed ways

The specific embodiments of the present invention will be described below with reference to the accompanying drawings and examples, but the following examples are only used to describe the present invention in detail, and do not limit the scope of the present invention in any way.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

Example 1:

A switch control electrical box, please refer to Figure 1 to Figure 13 together.

As shown in FIG. 1 , the switch control electrical box includes a casing 1, and there are five power distribution interfaces 2 on the casing 1, the codes are A ¹ , B ^{1 ,} C ¹ , D ¹ , and E ¹ respectively. As shown in FIG. 2, a circuit board is provided in the casing 1. The circuit board in this embodiment is a double-layer circuit board, including an upper circuit board 3 and a lower circuit board 4. As shown in FIG. 3, the lower circuit board 4 There are five groups of MOS tubes 41 , each group is divided into two rows, each row has 5 MOS tubes, these MOS tubes are used as switches, and each group of MOS tubes corresponds to a power distribution interface.

As shown in FIG. 4 , a conductive strip 42 for centralized power supply is embedded in the lower circuit board 4 , and the conductive strip 42 is provided with an electrical connection point 421 corresponding to each MOS transistor, and the electrical input terminals of each MOS transistor are provided on the conductive strip 42 . Corresponding to the electrical connection points 421 electrically connected to the conductive strips 42, as shown in FIG. 2, the housing 1 is also provided with an electrical input copper bar 43 electrically connected to the conductive strip 42, and the electrical input copper bar 43 There is an electrical input terminal 431 for connecting to a power supply, so as to supply power to each MOS tube.

As shown in FIG. 2 , a power distribution compartment 5 is arranged between the upper circuit board 3 and the lower layer circuit board 4 . As shown in FIG. 6 , ear seats 51 are provided on both sides of the power distribution compartment 5 . The upper circuit board 3 and the lower circuit board 4 are fixed by screws. The interior of the power distribution bin 5 is connected up and down, and the electrical input copper bars 43 are arranged in the power distribution bin 5. In the power distribution bin 5, there are also electrical output copper bars 44 for passing large currents on both sides of the electrical input copper bars 43, respectively. The electrical output copper bar 44 is provided with an electrical output terminal 441. As shown in FIG. 3, the lower circuit board 4 is provided with a parallel MOS transistor 45. The parallel MOS transistor 45 includes two MOS transistors connected in parallel. The electrical output copper bar 44 is electrically connected to the output terminal of the parallel MOS transistor 45, so that the electrical output copper bar 44 can supply power to a load with a large power.

As shown in FIG. 6 , a partition 52 is provided inside the power distribution bin 5 to isolate the electrical input copper bar 43 and the electrical output copper bar 44 to ensure the safety of electricity use. The side of the power distribution bin 5 is provided with a notch 53 and The plug-in port 54 is used for positioning the electrical input copper bar 43 and the electrical output copper bar 44 .

As shown in FIG. 7 , the electrical input copper bar 43 is provided with a first sub-copper bar 432 , the first sub-copper bar 432 is provided with a first sub-connecting terminal 433 , and the bottom of the first sub-copper bar 432 is provided with a second sub-bar 432 for soldering on the lower layer. The first pin 434 on the circuit board 4, when the electrical input copper bar 43 is arranged in the power distribution compartment 5, the electrical input copper bar 43 is electrically connected with the first sub-terminal 433, and similarly, the electrical output copper bar 44 is equipped with a The second sub-copper bar 442, the second sub-copper bar 442 is provided with a second sub-connecting terminal 443, and the bottom of the second sub-copper bar 442 is provided with a second pin 444 for soldering on the lower circuit board 4, when the electrical output copper The row 44 is arranged in the power distribution compartment 5 , and the electrical output copper row 44 is electrically connected to the second sub-terminal 443 . By disposing the first sub-copper bar 432 to the electrical input copper bar 43 and the second sub-copper bar 442 to the electrical output copper bar 44, the assembly, disassembly and maintenance of each copper bar are facilitated, and good electrical connection is ensured.

As shown in FIG. 2 , the upper circuit board 3 is provided with a first notch 31 corresponding to the power distribution box 5 , and as shown in FIG. It can extend through the first notch 31 to the second notch 11 , so as to facilitate the connection between the electrical input copper bar 43 and the electrical output copper bar 44 and the outside world. As shown in FIG. 1 , the casing 1 is provided with a top cover 12 corresponding to the second gap 11 . As shown in FIG. 6 , a first sealing groove 57 is provided on the upper edge of the power distribution compartment 5 , as shown in FIG. , set the first sealing ring 55 corresponding to the first sealing groove 57, when the top cover 12 is covered on the second gap 11, the top cover 12 is sealed with the power distribution bin 5 through the first sealing ring 55, and three Corresponding to the second sealing ring 56 of each plug port 54 , the electrical input copper bars 43 and the electrical output copper bars 44 are wrapped and sealed at the plug ports 54 .

As shown in FIG. 5 , a hinge seat 121 is provided on the top of the casing 1, so that the rear of the top cover 12 is hinged on the casing 1, and as shown in FIG. The buckle 122 is snap-connected, and three wiring holes 123 are provided on the front side of the top cover 12 for wiring the electrical input copper bar 43 and the electrical output copper bar 44 .

In this embodiment, after the electrical input copper bar 43 is powered on, some of the MOS tubes are directly turned on, and the other part of the MOS needs to be controlled by a control signal. This is because, taking the car as an example, some electrical equipment in the car It needs to be powered all the time, and some electrical equipment needs to be controlled to be turned on or off through commands. Therefore, the switch control electrical box in this embodiment needs to have corresponding functions. For this reason, as shown in Figure 1, each power distribution There are fifteen columnar pins in interface 2, including ten electrical output pins and five control pins. The electrical output pins are used to supply power to the electrical load, and the control pins are used to input control signals to control the corresponding MOS tubes. Each electrical output pin is respectively connected to an electrical output terminal of a MOS tube. If the MOS tube connected to a certain electrical output pin is turned on, the electrical output pin can supply power to a load electrically connected to it. One of the ten electrical output pins is thicker and suitable for powering larger power loads.

As shown in FIG. 3 , there are five electrical output pins in the power distribution interface 2 that are electrically connected to the corresponding MOS transistors through the circuits in the lower circuit board 4 , and the remaining five electrical output pins are connected through the jumper provided on the lower circuit board 4 . The wires 47 are electrically connected to the corresponding MOS tubes. This is because the electrical output pins in the same power distribution interface 2 are relatively concentrated, while the corresponding MOS tubes are relatively scattered. More MOS tubes are arranged on the top, and because the used MOS tubes themselves are small, the switch control electrical box is small in size and can have more switch control circuits.

As shown in FIG. 3, a communication connector 46 is provided between the upper layer circuit board 3 and the lower layer circuit board 4. As shown in FIG. 9, the communication connector includes a communication plug 461 welded on the bottom surface of the upper layer circuit board 3, and a The communication socket 462 soldered on the upper surface of the lower circuit board 4, and the communication plug 461 is inserted into the communication socket 462, so that the upper and lower circuit boards can communicate.

There are three processors (not shown in FIG. 2 ) on the upper circuit board 3 . The processors are single-chip microcomputers. To the terminal of the processor, a control signal can be sent to the processor through the control pin, and the processor then transmits the signal to the control terminal of the corresponding MOS tube on the lower circuit board 4 through the communication connector 46 to control the MOS tube switch.

In addition, each MOS tube has a feedback terminal, and the feedback terminal is connected to the processor corresponding to the signal. When the current in a certain MOS tube exceeds the limit, the feedback terminal of the MOS tube sends a signal to the processor, and the processor sends a signal to control the MOS tube to disconnect in time. , forming protection.

In this embodiment, the ten electrical output pins in the power distribution interface 2 are long pins, and the five control pins are short pins. Therefore, the lower ends of the electrical output pins can be soldered on the lower circuit board 4, while the upper The circuit board 3 is provided with via holes corresponding to the electrical output pins, and as shown in FIG. 10 , the middle of the electrical output pins 21 is provided with a stepped portion 211 for supporting the upper circuit board 3 , and the via holes on the upper circuit board 3 correspond to Passing through the electrical output pins 21, the lower surface of the upper circuit board 3 is supported on the step portion 211, so that the upper circuit board 3 and the electrical output pins 21 are not fixedly connected, and the communication plug 461 and the communication socket 462 in the communication connector 44 can also be The upper layer circuit board 3 and the lower layer circuit board 4 can be separated later, so as to facilitate the quality inspection and maintenance of the circuit board.

As shown in FIG. 10, a positioning step 212 is provided at the bottom of the electrical output pin 21, so that when the electrical output pin 21 is soldered on the lower circuit board 4, the welding position of the electrical output pin 21 can be positioned. Similarly, The bottom of the control pin 22 is also provided with a positioning step portion 221, so that when the control pin 22 is soldered on the upper circuit board 3, the welding position of the control pin 22 can be positioned, therefore, each electrical output pin of the power distribution interface 2 can be ensured 21. The tops of each control pin 22 are flush and located on the same horizontal plane. When used later, the power distribution interface 2 is in good contact with the power supply interface of the electrical equipment.

As shown in FIG. 11 , the bottom side of the housing 1 is provided with a conductive strip heat sink 6 , which is an aluminum plate and has a good heat dissipation function. As shown in FIG. 12 , the conductive strip heat sink 6 is provided with a Corresponding rib 61 of the conductive strip 42, the bottom surface of the conductive strip 42 is provided with a thermally conductive insulating gasket, so that the conductive strip 42 is placed on the convex rib 61 through the thermally conductive insulating gasket, so that the conductive strip 42 is on the conductive plate. The strip heat dissipation plate 6 is erected, which is more conducive to heat dissipation. In this embodiment, the conductive strips 42 for centralized power supply are provided, and a special conductive strip cooling plate 6 is specially designed, so that the internal components of the switch control electrical box are compact, and at the same time, it can ensure good heat dissipation capacity, and prevent the heat dissipation during use. Malfunction due to overheating.

As shown in FIG. 4 , a second sealing groove 48 is provided on the bottom edge of the casing 1 , and a third sealing ring 49 as shown in FIG. 13 is arranged in the second sealing groove 48 , the conductive strip heat sink 6 and the casing 1 A third sealing ring 49 is used for sealing between them.

Example 2:

A switch-controlled electrical box, see Figure 14.

As shown in FIG. 14 , compared with Embodiment 1, the housing 1 of the switch control electrical box in this embodiment is provided with five power distribution interfaces 2 , and the power distribution bin in this embodiment is larger in volume, and the power distribution bin occupies In the internal volume of the rear side of the entire housing 1, in the gap at the top of the housing 1, eight electrical output copper bars 44 are arranged on both sides of the electrical input terminal 431, and each electrical output copper bar 44 is provided with a wire for wiring. The column (the column on each copper bar is not fully shown in the figure), wherein, on the right side of the electrical input terminal 431, there are two electrical output copper bars connected in parallel through the parallel copper bar 445, so that the two electrical output copper bars are connected in parallel. The row can output a larger current, and other electrical output copper bars can also be connected in parallel. By arranging a plurality of electrical output copper bars 44, the electrical demand of more high-power loads can be met.

Example 3:

A power distribution method for a switch-controlled electrical box, the switch-controlled electrical box is the switch-controlled electrical box in Embodiment 1, and the power distribution method specifically includes:

(1) Centrally supply power to each MOS tube through the conductive strips embedded on the circuit board. In this way, the electric box can be made small in size, and it is convenient to concentrate heat dissipation, which is beneficial to control the heat generation of the electric box.

(2) After the electrical input copper bar is powered on, some of the electrical output pins can directly output current, and some electrical output pins can be powered on or off after getting the control signal through the control pins. This design method enables the switch control electrical box to meet the use requirements of different loads. In specific work, the MOS tube is controlled by sending a signal to the processor.

(3) When the current in a MOS tube exceeds the limit, the feedback terminal of the MOS tube sends a signal to the processor, and the processor sends a signal to control the MOS tube to be disconnected. By controlling the MOS tube, it is beneficial to prevent the MOS tube from overloading, prevent the MOS tube from being damaged, and improve the service life of the switch-controlled electrical box.

The present invention has been described in detail above in conjunction with the accompanying drawings and embodiments, but those skilled in the art can understand that, without departing from the technical concept of the present invention, the specific parameters in the above embodiments can also be changed. , or equivalent replacement of related components, structures and materials to form multiple specific embodiments, which are all common variations of the present invention, and will not be described in detail here.

Claims

A switch control electrical box, comprising a casing, a circuit board is arranged in the casing, characterized in that a conductive strip for centralized power supply is embedded on the circuit board, and one side of the casing is provided with Conductive strip heat sink, the casing is provided with an electrical input copper bar that is electrically connected to the conductive strip; a plurality of MOS tubes are arranged on the circuit board, and the input ends of the MOS tubes are all electrically connected To the conductive strip, the housing is provided with a power distribution interface, the power distribution interface is provided with a plurality of electrical output pins, and the electrical output pins are correspondingly electrically connected to the output end of the MOS tube; The power distribution interface is also provided with a plurality of control pins, a processor is provided on the circuit board, the control pins are correspondingly electrically connected to the processor, and the processor is correspondingly connected to the MOS transistor for signals the control terminal.
The switch control electrical box according to claim 1, wherein the circuit board comprises an upper-layer circuit board and a lower-layer circuit board, the lower ends of the control pins are welded on the upper-layer circuit board, and the electrical output pins have The lower end is welded on the lower circuit board, the upper circuit board is provided with via holes corresponding to the electrical output pins, and the middle of the electrical output pins is provided with a stepped portion for supporting the upper circuit board.
The switch control electrical box according to claim 2, wherein the conductive strip is embedded in the lower circuit board, each of the MOS transistors is arranged on the lower circuit board, and the processor is arranged on the lower circuit board. On the upper circuit board, a communication plug is provided on the bottom surface of the upper circuit board, and a communication socket is correspondingly provided on the upper surface of the lower circuit board, and the communication plug is inserted into the communication socket.
The switch control electrical box according to claim 2, wherein some of the electrical output pins in the power distribution interface are electrically connected to the corresponding MOS transistors through the circuit in the lower circuit board, and the remaining electrical output pins are set by The jumper wires on the lower circuit board are electrically connected to the corresponding MOS transistors.
The switch control electrical box according to claim 1, wherein a power distribution compartment is arranged between the upper layer circuit board and the lower layer circuit board, and a first power distribution compartment corresponding to the power distribution compartment is arranged on the upper layer circuit board. A notch, a second notch is correspondingly provided on the housing, and a top cover corresponding to the second notch is arranged on the housing; the electrical input copper bar is arranged in the power distribution bin.
The switch control electrical box according to claim 5, wherein an electrical output copper bar is further arranged in the power distribution bin, a parallel MOS transistor is arranged on the circuit board, and the electrical output copper bar is electrically connected to the output terminal of the parallel MOS transistor.
The switch control electrical box according to claim 1, wherein the bottom surface of the conductive strip is provided with a thermally conductive insulating gasket, and the heat dissipation plate of the conductive strip is provided with a rib corresponding to the conductive strip , the conductive strips are placed on the rib via the thermally conductive insulating gasket.
The switch control electrical box according to claim 1, wherein the MOS transistor has a feedback terminal, and the feedback terminal is connected to the processor corresponding to a signal.
The switch control electrical box according to claim 1, wherein a plurality of processors and power distribution interfaces are provided.
The method for power distribution of a switch-controlled electrical box according to any one of claims 1-9, characterized in that, comprising:

Centrally supply power to each of the MOS transistors through the conductive strips embedded on the circuit board;

After the electrical input copper bar is powered on, a part of the electrical output pins can output current directly, and a part of the electrical output pins can be powered on or off after obtaining a control signal through the control pins;

When the current in a certain MOS tube exceeds the limit, the feedback terminal of the MOS tube sends a signal to the processor, and the processor sends a signal to control the MOS tube to be disconnected.