High-voltage junction box of motor three-phase line and high-power motor power distribution device

Abstract

The embodiment of the invention provides a high-voltage junction box of a motor three-phase line and a high-power motor power distribution device. The high-voltage junction box comprises two all-in-one controller units, a junction box and a motor junction box, the type of the all-in-one controller unit is a double-branch three-phase power output type all-in-one controller unit; a U1 phase, a V1 phase and a W1 phase of the first all-in-one controller unit are respectively connected in parallel with a U2 phase, a V2 phase and a W2 phase of the second all-in-one controller unit to form three parallel circuits; the three parallel circuits are respectively connected to one end of a first pre-charging loop, one end of a second pre-charging loop and one end of a third pre-charging loop of the junction box; and the other end of the first pre-charging loop, the other end of the second pre-charging loop and the other end of the third pre-charging loop are respectively connected to the U phase of the motor junction box, the V phase of the motor junction box and the W phase of the motor junction box. The high-voltage junction box for the three-phase line of the motor can enlarge product application scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power distribution devices, and in particular to a high-voltage junction box for a three-phase line of a motor and a high-power motor power distribution device. Background Art

[0002] In the current new energy off-road dump truck products, the high-voltage power distribution of the powertrain system is directly connected to the all-in-one controller unit through high-voltage cables. Its advantages are high vehicle integration, easy maintenance and repair, and reduced vehicle costs. This architecture is simple and easy to implement.

[0003] However, if the vehicle is equipped with a dual-motor powertrain, where the power of a single motor is greater than 310Kw, the all-in-one controller unit cannot support the power supply requirements of the corresponding motor and can only limit the power of the motor to achieve functional requirements. The existing technology cannot fully release the power performance of the powertrain, which in turn affects the performance of the entire vehicle, resulting in a waste of power efficiency, and cannot meet the capacity requirements in some application scenarios, limiting the application scenarios of the product. Summary of the invention

[0004] The purpose of the present invention is to provide a high-voltage junction box for the three-phase line of a motor and a high-power motor distribution device, so as to alleviate the problem that the prior art cannot fully release the power performance of the powertrain, thereby affecting the performance of the entire vehicle, resulting in waste of power efficiency, and cannot meet the capacity requirements in individual application scenarios, limiting the technical problem of product application scenarios, thereby increasing product application scenarios.

[0005] In the first aspect, an embodiment of the present invention provides a high-voltage junction box for a three-phase line of a motor, comprising: two all-in-one controller units, a junction box and a motor junction box; the type of the all-in-one controller unit is a dual-branch three-phase electrical output type all-in-one controller unit; the two all-in-one controller units include: a first all-in-one controller unit and a second all-in-one controller unit; the U1 phase, V1 phase and W1 phase of the first all-in-one controller unit are respectively connected in parallel with the U2 phase, V2 phase and W2 phase of the second all-in-one controller unit to form three parallel circuits; the three parallel circuits are respectively connected to one end of the first pre-charging circuit of the junction box, one end of the second pre-charging circuit of the junction box and one end of the third pre-charging circuit of the junction box, and the other end of the first pre-charging circuit, the other end of the second pre-charging circuit and the other end of the third pre-charging circuit are respectively connected to the U phase of the motor junction box, the V phase of the motor junction box and the W phase of the motor junction box.

[0006] In a preferred implementation of the embodiment of the present invention, the above three parallel circuits are respectively connected to one end of the first pre-charging circuit of the above junction box, one end of the second pre-charging circuit of the above junction box, and one end of the third pre-charging circuit of the above junction box through a copper bus and a first high-voltage wiring harness.

[0007] In a preferred implementation of the embodiment of the present invention, the above-mentioned first pre-charging circuit includes: a first series unit and a second contactor connected in parallel with the above-mentioned first series unit; the above-mentioned first series unit includes: a first resistor and a first contactor connected in parallel; the above-mentioned first pre-charging circuit includes: a second series unit and a fourth contactor connected in parallel with the above-mentioned second series unit; the above-mentioned second series unit includes a second resistor and a third contactor connected in parallel; the above-mentioned third pre-charging circuit includes: a third series unit and a sixth contactor connected in parallel with the above-mentioned third series unit; the above-mentioned third series unit includes: a third resistor and a fifth contactor connected.

[0008] In a preferred implementation of the embodiment of the present invention, the U1 phase is connected in parallel with the above-mentioned U2 phase to form the first parallel circuit among the above-mentioned three parallel circuits; the above-mentioned first parallel circuit is connected to the above-mentioned first resistor and one end of the above-mentioned second contactor; the other end of the above-mentioned first resistor is connected to one end of the above-mentioned first contactor; the other end of the above-mentioned second contactor and the other end of the above-mentioned first contactor are both connected to the above-mentioned U phase; the above-mentioned V1 phase is connected in parallel with the above-mentioned V2 phase to form the second parallel circuit among the above-mentioned three parallel circuits; the above-mentioned second parallel circuit is connected to the above-mentioned second resistor and one end of the above-mentioned fourth contactor; the other end of the above-mentioned second resistor is connected to one end of the above-mentioned third contactor; the other end of the above-mentioned third contactor and the other end of the above-mentioned fourth contactor are both connected to the above-mentioned V phase; the above-mentioned W1 phase is connected in parallel with the above-mentioned W2 phase to form the third parallel circuit among the above-mentioned three parallel circuits; the above-mentioned third parallel circuit is connected to the above-mentioned third resistor and one end of the above-mentioned sixth contactor; the other end of the above-mentioned third resistor is connected to one end of the above-mentioned fifth contactor; the other end of the above-mentioned fifth contactor and the other end of the above-mentioned sixth contactor are both connected to the above-mentioned W phase.

[0009] In a preferred implementation of the embodiment of the present invention, the above-mentioned junction box is connected to the above-mentioned motor junction box through a second high-voltage wire harness; the above-mentioned motor junction box is also connected to an external dual-motor powertrain.

[0010] In a preferred implementation manner of the embodiment of the present invention, the cross-section of the first high-voltage wire harness is 95 mm²; the cross-section of the second high-voltage wire harness is 150 mm².

[0011] In a preferred implementation of the embodiment of the present invention, a CAN bus communication module is also provided in the above-mentioned high-voltage junction box; the above-mentioned dual-motor powertrain is communicatively connected with the peripheral power battery; the above-mentioned CAN bus communication module is used to collect battery information of the above-mentioned power battery.

[0012] In a preferred implementation of the embodiment of the present invention, the above-mentioned two all-in-one controller units are also communicatively connected with the remote information control unit of the peripheral device through the above-mentioned CAN bus communication module; the above-mentioned remote information control unit is used to issue a motor operation request to the above-mentioned two all-in-one controller units to control the above-mentioned two all-in-one controller units to output three-phase electricity to the above-mentioned junction box.

[0013] In a preferred implementation manner of the embodiment of the present invention, the above-mentioned first contactor, the above-mentioned second contactor, the above-mentioned third contactor, the above-mentioned fourth contactor, the above-mentioned fifth contactor and the above-mentioned sixth contactor are all connected to the low-voltage power supply of the external device; the above-mentioned two all-in-one controller units control the on-off of the above-mentioned first contactor, the above-mentioned second contactor, the above-mentioned third contactor, the above-mentioned fourth contactor, the above-mentioned fifth contactor and the above-mentioned sixth contactor by controlling the on-off of the above-mentioned low-voltage power supply.

[0014] In a second aspect, an embodiment of the present invention further provides a high-power motor power distribution device, including: a high-voltage junction box for the three-phase line of the above-mentioned motor.

[0015] The embodiments of the present invention have the following beneficial technical effects: An embodiment of the present invention provides a high-voltage junction box for a three-phase line of a motor and a high-power motor distribution device, comprising: two all-in-one controller units, a junction box and a motor junction box; the type of the all-in-one controller unit is a dual-branch three-phase electrical output type all-in-one controller unit; the two all-in-one controller units include: a first all-in-one controller unit and a second all-in-one controller unit; the U1 phase, V1 phase and W1 phase of the first all-in-one controller unit are respectively connected in parallel with the U2 phase, V2 phase and W2 phase of the second all-in-one controller unit to form three parallel circuits; the three parallel circuits are respectively connected to one end of the first pre-charging circuit of the junction box, one end of the second pre-charging circuit of the junction box and one end of the third pre-charging circuit of the junction box, and the other end of the first pre-charging circuit, the other end of the second pre-charging circuit and the other end of the third pre-charging circuit are respectively connected to the U phase of the motor junction box, the V phase of the motor junction box and the W phase of the motor junction box. The high-voltage junction box of the three-phase line of the motor can achieve the effect of increasing the power supply by connecting the multi-in-one controller unit with dual-branch three-phase electrical output in parallel and connecting it to the motor junction box, thereby alleviating the problem that the existing technology cannot fully release the power performance of the powertrain, thereby affecting the performance of the entire vehicle, causing waste of power efficiency, and failing to meet the capacity requirements in individual application scenarios, limiting the technical problems of product application scenarios, thereby increasing product application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a high-voltage junction box for a three-phase line of an existing motor provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a high-voltage junction box for a three-phase line of a motor provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of another high-voltage junction box for three-phase lines of a motor provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a high-power motor power distribution device provided in an embodiment of the present invention.

[0018] Icons: 1-two all-in-one controller units; 2-high-voltage cables; 12-junction box; 13-motor junction box; 111-first all-in-one controller unit; 112-second all-in-one controller unit; 21-first parallel circuit; 22-second parallel circuit; 23-third parallel circuit; 41-high-voltage junction box for motor three-phase lines; 42-high-power motor distribution device. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] At present, in new energy off-road dump truck products, the high-voltage power distribution of the powertrain system is directly distributed by the all-in-one controller unit through a high-voltage cable. The advantages are that the whole vehicle has a high degree of integration, easy inspection and maintenance, and reduced vehicle cost. This architecture is simple and easy to implement. However, if the whole vehicle is equipped with a dual-motor powertrain, where the power of a single motor is greater than 310Kw, the all-in-one controller unit cannot support the power supply requirements of the corresponding motor, and can only limit the power of the motor to achieve the functional requirements. The existing technology cannot fully release the power performance of the powertrain, which in turn affects the performance of the whole vehicle, resulting in a waste of power efficiency, and in some application scenarios, it cannot meet the transportation capacity requirements, limiting the product application scenarios. For ease of understanding, Figure 1The present invention provides a schematic diagram of the structure of a high-voltage junction box for a three-phase line of an existing motor. Figure 1 As can be seen, the all-in-one controller 1 is directly connected to the motor junction box 13 via a high-voltage cable 2 .

[0021] Based on this, an embodiment of the present invention provides a high-voltage junction box for a three-phase line of a motor and a high-power motor distribution device. The high-voltage junction box for the three-phase line of the motor can achieve the effect of increasing the power supply by connecting the multi-in-one controller unit with dual-branch three-phase electrical output in parallel and connecting it to the motor junction box, thereby alleviating the problem that the prior art cannot fully release the power performance of the powertrain, thereby affecting the performance of the entire vehicle, causing a waste of power efficiency, and failing to meet the capacity requirements in individual application scenarios, limiting the technical problems of product application scenarios, thereby increasing product application scenarios. In order to understand the embodiments of the present invention, a high-voltage junction box for a three-phase line of a motor is first introduced.

[0022] Example 1 In this embodiment, Figure 2 A schematic structural diagram of a high-voltage junction box for a three-phase line of a motor provided in an embodiment of the present invention.

[0023] Depend on Figure 2 As can be seen, the high-voltage junction box of the three-phase line of the motor includes: two all-in-one controller units 1, a junction box 12 and a motor junction box 13; the type of the all-in-one controller unit is a dual-branch three-phase electrical output type all-in-one controller unit; the two all-in-one controller units 1 include: a first all-in-one controller unit 111 and a second all-in-one controller unit 112; the U1 phase, V1 phase and W1 phase of the first all-in-one controller unit 111 are respectively connected in parallel with the U2 phase, V2 phase and W2 phase of the second all-in-one controller unit 112 to form three parallel circuits; the three parallel circuits are respectively connected to one end of the first pre-charging circuit of the junction box 12, one end of the second pre-charging circuit of the junction box and one end of the third pre-charging circuit of the junction box, and the other end of the first pre-charging circuit, the other end of the second pre-charging circuit and the other end of the third pre-charging circuit are respectively connected to the U phase of the motor junction box 13, the V phase of the motor junction box 13 and the W phase of the motor junction box 13. In actual operation, each of the above-mentioned all-in-one controller units is provided with an MCU.

[0024] Furthermore, the three parallel circuits are respectively connected to one end of the first pre-charging circuit of the junction box, one end of the second pre-charging circuit of the junction box, and one end of the third pre-charging circuit of the junction box through a copper bus and a first high-voltage wiring harness.

[0025] Furthermore, the first pre-charging circuit includes: a first series unit and a second contactor connected in parallel with the first series unit; the first series unit includes: a first resistor and a first contactor connected in parallel; the first pre-charging circuit includes: a second series unit and a fourth contactor connected in parallel with the second series unit; the second series unit includes a second resistor and a third contactor connected in parallel; the third pre-charging circuit includes: a third series unit and a sixth contactor connected in parallel with the third series unit; the third series unit includes: a third resistor and a fifth contactor connected.

[0026] For ease of understanding, Figure 3 A schematic structural diagram of another high-voltage junction box for three-phase lines of a motor provided in an embodiment of the present invention.

[0027] Depend on Figure 3 As can be seen, the above-mentioned U1 phase is connected in parallel with the above-mentioned U2 phase to form the first parallel circuit 21 among the above-mentioned three parallel circuits; the above-mentioned first parallel circuit 21 is connected to the above-mentioned first resistor and one end of the above-mentioned second contactor; the other end of the above-mentioned first resistor is connected to one end of the above-mentioned first contactor; the other end of the above-mentioned second contactor and the other end of the above-mentioned first contactor are both connected to the above-mentioned U phase; the above-mentioned V1 phase is connected in parallel with the above-mentioned V2 phase to form the second parallel circuit 22 among the above-mentioned three parallel circuits; the above-mentioned second parallel circuit 22 is connected to the above-mentioned second resistor and one end of the above-mentioned fourth contactor; the other end of the above-mentioned second resistor is connected to one end of the above-mentioned third contactor; the other end of the above-mentioned third contactor and the other end of the above-mentioned fourth contactor are both connected to the above-mentioned V phase; the above-mentioned W1 phase is connected in parallel with the above-mentioned W2 phase to form the third parallel circuit 23 among the above-mentioned three parallel circuits; the above-mentioned third parallel circuit 23 is connected to the above-mentioned third resistor and one end of the above-mentioned sixth contactor; the other end of the above-mentioned third resistor is connected to one end of the above-mentioned fifth contactor; the other end of the above-mentioned fifth contactor and the other end of the above-mentioned sixth contactor are both connected to the above-mentioned W phase.

[0028] In this embodiment, the above Figure 3 The first resistor is represented by R1, the second resistor is represented by R2, and the third resistor is represented by R3; the first contactor is represented by K1, the second contactor is represented by K2, the third contactor is represented by K3, the fourth contactor is represented by K4, the fifth contactor is represented by K5, and the sixth contactor is represented by K6.

[0029] Furthermore, the junction box 12 is connected to the motor junction box 13 via a second high-voltage wire harness; the motor junction box is also connected to an external dual-motor powertrain.

[0030] In this embodiment, the cross-section of the first high-voltage wire harness is 95 mm²; the cross-section of the second high-voltage wire harness is 150 mm².

[0031] In actual operation, a CAN bus communication module is also provided in the high-voltage junction box; the dual-motor powertrain is communicatively connected with an external power battery; and the CAN bus communication module is used to collect battery information of the power battery.

[0032] Furthermore, the above-mentioned two all-in-one controller units 1 are also communicatively connected with the remote information control unit of the peripheral device through the above-mentioned CAN bus communication module; the above-mentioned remote information control unit is used to issue a motor operation request to the above-mentioned two all-in-one controller units 1 to control the above-mentioned two all-in-one controller units 1 to output three-phase electricity to the above-mentioned junction box 12.

[0033] Furthermore, the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor and the sixth contactor are all connected to a low-voltage power supply of an external device; the two all-in-one controller units control the on-off of the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor and the sixth contactor by controlling the on-off of the low-voltage power supply.

[0034] In actual operation, the joint surface between the wiring harness connector and the junction box of the above-mentioned junction box is treated with a standard not less than IP54. Since a sealing waterproof strip made of silicone rubber or EPDM is installed at the interface, the box body should also have certain waterproof and anti-corrosion properties.

[0035] An embodiment of the present invention provides a high-voltage junction box for a three-phase line of a motor, comprising: two all-in-one controller units, a junction box and a motor junction box; the type of the all-in-one controller unit is a dual-branch three-phase electrical output type all-in-one controller unit; the two all-in-one controller units include: a first all-in-one controller unit and a second all-in-one controller unit; the U1 phase, V1 phase and W1 phase of the first all-in-one controller unit are respectively connected in parallel with the U2 phase, V2 phase and W2 phase of the second all-in-one controller unit to form three parallel circuits; the three parallel circuits are respectively connected to one end of the first pre-charging circuit of the junction box, one end of the second pre-charging circuit of the junction box and one end of the third pre-charging circuit of the junction box, and the other end of the first pre-charging circuit, the other end of the second pre-charging circuit and the other end of the third pre-charging circuit are respectively connected to the U phase of the motor junction box, the V phase of the motor junction box and the W phase of the motor junction box. The high-voltage junction box of the three-phase line of the motor can achieve the effect of increasing the power supply by connecting the multi-in-one controller unit with dual-branch three-phase electrical output in parallel and connecting it to the motor junction box, thereby alleviating the problem that the existing technology cannot fully release the power performance of the powertrain, thereby affecting the performance of the entire vehicle, causing waste of power efficiency, and failing to meet the capacity requirements in individual application scenarios, limiting the technical problems of product application scenarios, thereby increasing product application scenarios.

[0036] Example 2 Based on the above embodiments, Figure 4 A schematic structural diagram of a high-power motor power distribution device provided in an embodiment of the present invention.

[0037] Depend on Figure 4 As can be seen, the high-power motor power distribution device 42 includes: a high-voltage junction box 41 of the motor three-phase line in the above embodiment.

[0038] The high-power motor power distribution device provided in this embodiment has the same technical features as the high-voltage junction box of the motor three-phase line provided in the above-mentioned embodiment 1, so it can also solve the same technical problems and achieve the same technical effects. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the high-power motor power distribution device described above can refer to the corresponding structure of the high-voltage junction box of the motor three-phase line in the above-mentioned embodiment 1, and will not be repeated here.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Finally, it should be explained that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high voltage junction box for a three-phase line of a motor, characterized in that: include: Two all-in-one controller units, junction box, and motor terminal box; The type of the all-in-one controller unit is a dual-branch three-phase electrical output type all-in-one controller unit; The two all-in-one controller units include: a first all-in-one controller unit and a second all-in-one controller unit; The U1 phase, V1 phase and W1 phase of the first all-in-one controller unit are respectively connected in parallel with the U2 phase, V2 phase and W2 phase of the second all-in-one controller unit to form three parallel circuits; the three parallel circuits are respectively connected to one end of the first pre-charging circuit of the junction box, one end of the second pre-charging circuit of the junction box and one end of the third pre-charging circuit of the junction box, and the other end of the first pre-charging circuit, the other end of the second pre-charging circuit and the other end of the third pre-charging circuit are respectively connected to the U phase of the motor junction box, the V phase of the motor junction box and the W phase of the motor junction box.

2. The high voltage junction box for the three-phase line of the motor according to claim 1, characterized in that: The three parallel circuits are respectively connected to one end of the first pre-charging circuit of the junction box, one end of the second pre-charging circuit of the junction box, and one end of the third pre-charging circuit of the junction box through a copper bus and a first high-voltage wire harness.

3. The high voltage junction box for the three-phase line of the motor according to claim 2, characterized in that: The first pre-charging circuit includes: a first series unit and a second contactor connected in parallel with the first series unit; the first series unit includes: a first resistor and a first contactor connected in parallel; the first pre-charging circuit includes: a second series unit and a fourth contactor connected in parallel with the second series unit; the second series unit includes a second resistor and a third contactor connected in parallel; the third pre-charging circuit includes: a third series unit and a sixth contactor connected in parallel with the third series unit; the third series unit includes: a third resistor and a fifth contactor connected.

4. The high voltage junction box for the three-phase line of the motor according to claim 3, characterized in that: The U1 phase is connected in parallel with the U2 phase to form the first parallel circuit among the three parallel circuits; the first parallel circuit is connected to the first resistor and one end of the second contactor; the other end of the first resistor is connected to one end of the first contactor; the other end of the second contactor and the other end of the first contactor are both connected to the U phase; the V1 phase is connected in parallel with the V2 phase to form the second parallel circuit among the three parallel circuits; the second parallel circuit is connected to the second resistor and one end of the fourth contactor; the other end of the second resistor is connected to one end of the third contactor; the other end of the third contactor and the other end of the fourth contactor are both connected to the V phase; the W1 phase is connected in parallel with the W2 phase to form the third parallel circuit among the three parallel circuits; the third parallel circuit is connected to the third resistor and one end of the sixth contactor; the other end of the third resistor is connected to one end of the fifth contactor; the other end of the fifth contactor and the other end of the sixth contactor are both connected to the W phase.

5. The high voltage junction box for the three-phase line of the motor according to claim 4, characterized in that: The junction box is connected to the motor junction box via a second high-voltage wire harness; the motor junction box is also connected to an external dual-motor powertrain.

6. The high voltage junction box for the three-phase line of the motor according to claim 5, characterized in that: The cross-section of the first high-voltage wire harness is 95 mm²; the cross-section of the second high-voltage wire harness is 150 mm².

7. The high voltage junction box for the three-phase line of the motor according to claim 5, characterized in that: The high-voltage junction box is also provided with a CAN bus communication module; the dual-motor powertrain is communicatively connected with the power battery of the peripheral device; The CAN bus communication module is used to collect battery information of the power battery.

8. The high voltage junction box for the three-phase line of the motor according to claim 7, characterized in that: The two all-in-one controller units are also communicatively connected with the remote information control unit of the peripheral device via the CAN bus communication module; The remote information control unit is used to send a motor operation request to the two all-in-one controller units to control the two all-in-one controller units to output three-phase electricity to the junction box.

9. The high voltage junction box for the three-phase line of the motor according to claim 3, characterized in that: The first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor and the sixth contactor are all connected to a low-voltage power supply of an external device; The two all-in-one controller units control the on and off of the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor and the sixth contactor by controlling the on and off of the low-voltage power supply.

10. A high-power motor power distribution device, characterized in that: include: A high voltage junction box for a three-phase line of a motor as claimed in any one of claims 1 to 9.

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