CAN-controlled high-voltage multipath power distribution control system

Abstract

The invention provides a CAN-controlled high-voltage multi-path power distribution control system, and relates to the technical field of electric engineering machinery and commercial vehicles, and the CAN-controlled high-voltage multi-path power distribution control system comprises a power battery pack, a CAN-controlled power distribution box PDU, a six-path driving motor control module, an oil pump, an air pump, an air conditioner, a PTC, a 24V storage battery and a vehicle control unit VCU, the output positive and negative electrodes of the power battery pack are connected with the CAN-controlled power distribution box PDU, and the CAN-controlled power distribution box PDU is connected with the six-path driving motor control module. The system is characterized in that power is distributed to a six-path driving motor control module, an oil pump, an air pump, an air conditioner, a freezing module, a PTC, a 24V storage battery and a vehicle control unit VCU through a CAN control distribution box PDU, the CAN control distribution box PDU is connected with the vehicle control unit VCU through a CAN bus, and the vehicle control unit VCU controls the CAN control distribution box PDU in a communication mode through the CAN bus and is used for distributing power to all electric components. According to the invention, hardware optimization can be realized, full coverage of pre-charging protection is realized, a circuit is simplified, and the service life of equipment can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of electric engineering machinery and commercial vehicles, and in particular to a CAN-controlled high-voltage multi-channel power distribution control system. Background Art

[0002] In the field of electrified engineering machinery and commercial vehicles, large-tonnage pure electric mining trucks, heavy-duty transport vehicles, etc. have an urgent need for high-voltage and high-power power distribution systems. Traditional power distribution solutions mostly use single-channel or a small number of multi-channel drive designs, which have the following technical pain points:

[0003] 1. Insufficient power: The existing system is difficult to meet the high power requirements of large-tonnage vehicles for multi-motor coordinated drive (such as 6-way 600kW level);

[0004] 2. Lack of pre-charge protection: There is a lack of pre-charge circuit buffer at the moment of high-voltage power-on, which can easily cause the motor controller (MCU) to be damaged due to surge current impact;

[0005] 3. Poor control redundancy: Relying on a large number of relays and physical wiring harnesses for control, the number of controller I / O ports is insufficient, and electromagnetic interference (EMI) issues are prominent.

[0006] Therefore, it is necessary to design a CAN-controlled high-voltage multi-channel power distribution control system. Summary of the invention

[0007] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a CAN-controlled high-voltage multi-channel power distribution control system.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] The present invention provides a CAN-controlled high-voltage multi-channel power distribution control system, comprising: a power battery pack, a CAN-controlled power distribution box PDU, a six-channel drive motor control module, an oil pump, an air pump, an air conditioner, a PTC, a 24V battery and a vehicle controller VCU. The output positive and negative poles of the power battery pack are connected to the CAN-controlled power distribution box PDU, and are distributed to the six-channel drive motor control module, the oil pump, the air pump, the air conditioner, the refrigeration module, the PTC, the 24V battery and the vehicle controller VCU through the CAN-controlled power distribution box PDU. The CAN-controlled power distribution box PDU is connected to the vehicle controller VCU through a CAN bus. The vehicle controller VCU controls the CAN-controlled power distribution box PDU through CAN bus communication, so as to distribute electricity to each power-consuming component.

[0010] Preferably, the CAN-controlled power distribution box PDU is internally provided with an air-conditioning control circuit, a PTC control circuit, a refrigeration control circuit, a standby control circuit, a two-in-one control circuit and a plurality of pre-charging circuits. The air conditioner is connected through the air-conditioning control circuit, the PTC is connected through the PTC control circuit, the refrigeration module is connected through the refrigeration control circuit, the standby control circuit is used for standby, the oil pump and the air pump are connected through the two-in-one control circuit, and the six-way drive motor control module is connected through the pre-charging circuit.

[0011] Preferably, the six-way drive motor control module includes drive motor 1, MCU1, drive motor 2, MCU2, drive motor 3, MCU3, drive motor 4, MCU4, drive motor 5, MCU5, drive motor 6, and MCU6. The CAN-controlled distribution box PDU is connected to the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6 through corresponding pre-charging circuits, and the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6 are connected to the corresponding drive motor 1, drive motor 2, drive motor 3, drive motor 4, drive motor 5 and drive motor 6, respectively.

[0012] Preferably, the air conditioning control circuit includes a K13 contactor and a fuse F7, the positive pole of the power battery pack is connected to the K13 contactor, the K13 contactor is connected to the fuse F7, the fuse F7 is connected to the positive pole of the air conditioner, the negative pole of the air conditioner is connected to the negative pole of the power battery pack, and the K13 contactor is connected to the vehicle controller VCU via a CAN bus.

[0013] Preferably, the PTC control circuit includes a K14 contactor and a fuse F8, the positive pole of the power battery pack is connected to the K14 contactor, the K14 contactor is connected to the fuse F8, the fuse F8 is connected to the positive pole of the PTC, the negative pole of the PTC is connected to the negative pole of the power battery pack, and the K14 contactor is connected to the vehicle controller VCU via a CAN bus.

[0014] Preferably, the refrigeration control circuit includes a K15 contactor and a fuse F9, the positive pole of the power battery pack is connected to the K15 contactor, the K15 contactor is connected to the fuse F9, the fuse F9 is connected to the positive pole of the refrigeration module, the negative pole of the refrigeration module is connected to the negative pole of the power battery pack, and the K15 contactor is connected to the vehicle controller VCU via a CAN bus.

[0015] Preferably, the backup control circuit includes a K16 contactor and a fuse F10, the positive pole of the power battery pack is connected to the K16 contactor, the K16 contactor is connected to the fuse F10, the fuse F10 is connected to the positive pole of the backup device, the negative pole of the backup device is connected to the negative pole of the power battery pack, and the K16 contactor is connected to the vehicle controller VCU via a CAN bus.

[0016] Preferably, the two-in-one control circuit includes a K17 contactor and a fuse F11, the positive pole of the power battery pack is connected to the K17 contactor, the K17 contactor is connected to the fuse F11, the fuse F11 is connected to the positive poles of the air pump and the oil pump, the negative poles of the air pump and the oil pump are connected to the negative pole of the power battery pack, and the K17 contactor is connected to the vehicle controller VCU via a CAN bus.

[0017] Preferably, six pre-filling circuits are provided corresponding to the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6, which are respectively a first pre-filling circuit, a second pre-filling circuit, a third pre-filling circuit, a fourth pre-filling circuit, a fifth pre-filling circuit and a sixth pre-filling circuit;

[0018] The first pre-charging circuit includes a K1 contactor, a K7 contactor, a pre-charging resistor 1 and a fuse F1. The positive electrode of the power battery pack is connected to the K1 contactor and the K7 contactor, the K1 contactor is connected to the fuse F1, the K7 contactor is connected to the pre-charging resistor 1, the pre-charging resistor 1 is connected to the fuse F1, the fuse F1 is connected to the positive electrode of the MCU1, and the negative electrode of the MCU1 is connected to the negative electrode of the power battery pack;

[0019] The second pre-charging circuit includes a K2 contactor, a K8 contactor, a pre-charging resistor 2 and a fuse F2. The positive electrode of the power battery pack is connected to the K2 contactor and the K8 contactor, the K2 contactor is connected to the fuse F2, the K8 contactor is connected to the pre-charging resistor 2, the pre-charging resistor 2 is connected to the fuse F2, the fuse F2 is connected to the positive electrode of the MCU2, and the negative electrode of the MCU2 is connected to the negative electrode of the power battery pack;

[0020] The third pre-charging circuit includes a K3 contactor, a K9 contactor, a pre-charging resistor 3 and a fuse F3. The positive electrode of the power battery pack is connected to the K3 contactor and the K9 contactor, the K3 contactor is connected to the fuse F3, the K9 contactor is connected to the pre-charging resistor 3, the pre-charging resistor 3 is connected to the fuse F3, the fuse F3 is connected to the positive electrode of the MCU3, and the negative electrode of the MCU3 is connected to the negative electrode of the power battery pack;

[0021] The fourth pre-charging circuit includes a K4 contactor, a K10 contactor, a pre-charging resistor 4 and a fuse F4, the positive electrode of the power battery pack is connected to the K4 contactor and the K10 contactor, the K4 contactor is connected to the fuse F4, the K10 contactor is connected to the pre-charging resistor 4, the pre-charging resistor 4 is connected to the fuse F4, the fuse F4 is connected to the positive electrode of the MCU4, and the negative electrode of the MCU4 is connected to the negative electrode of the power battery pack;

[0022] The fifth pre-charging circuit includes a K5 contactor, a K11 contactor, a pre-charging resistor 5 and a fuse F5, the positive electrode of the power battery pack is connected to the K5 contactor and the K11 contactor, the K5 contactor is connected to the fuse F5, the K11 contactor is connected to the pre-charging resistor 5, the pre-charging resistor 5 is connected to the fuse F5, the fuse F5 is connected to the positive electrode of the MCU5, and the negative electrode of the MCU5 is connected to the negative electrode of the power battery pack;

[0023] The first pre-charging circuit includes a K6 contactor, a K12 contactor, a pre-charging resistor 6 and a fuse F6. The positive electrode of the power battery pack is connected to the K6 contactor and the K12 contactor. The K6 contactor is connected to the fuse F6. The K12 contactor is connected to the pre-charging resistor 6. The pre-charging resistor 6 is connected to the fuse F6. The fuse F6 is connected to the positive electrode of the MCU6. The negative electrode of the MCU6 is connected to the negative electrode of the power battery pack.

[0024] The K1 contactor, K2 contactor, K3 contactor, K4 contactor, K5 contactor, K6 contactor, K7 contactor, K8 contactor, K9 contactor, K10 contactor, K11 contactor and K12 contactor are connected to the vehicle controller VCU via a CAN bus.

[0025] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0026] The present invention provides a CAN-controlled high-voltage multi-channel power distribution control system, including a power battery pack, a CAN-controlled power distribution box PDU, a six-channel drive motor control module, an oil pump, an air pump, an air conditioner, a PTC, a 24V battery and a vehicle controller VCU, the output positive and negative electrodes of the power battery pack are connected to the CAN-controlled power distribution box PDU, and are distributed to the six-channel drive motor control module, the oil pump, the air pump, the air conditioner, the refrigeration module, the PTC, the 24V battery and the vehicle controller VCU through the CAN-controlled power distribution box PDU, the CAN-controlled power distribution box PDU is connected to the vehicle controller VCU through a CAN bus, and the vehicle controller VCU controls the CAN-controlled power distribution box PDU through CAN bus communication, which is used to distribute electricity to each power-consuming component. The present invention adopts an integrated multi-channel power distribution design, which can realize hardware optimization, and each drive is independently configured with a pre-charging circuit to realize full coverage of pre-charging protection. The CAN bus intelligent control is adopted to simplify the circuit, which can extend the life of the equipment and is easy to maintain, and realizes high reliability and intelligent power distribution control in high-voltage and high-power scenarios, filling the technical gap of the power system of large-tonnage pure electric vehicles in China. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 This is the overall structure diagram of the CAN-controlled high-voltage multi-channel power distribution control system;

[0029] Figure 2 This is a schematic diagram of the internal circuit connection of the CAN-controlled power distribution box PDU. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a CAN-controlled high-voltage multi-channel power distribution control system, which adopts an integrated multi-channel power distribution design, can achieve hardware optimization, and each drive is independently configured with a pre-charging circuit to achieve full coverage of pre-charging protection. It adopts CAN bus intelligent control, simplifies the circuit, can extend the life of the equipment, and is easy to maintain, and realizes high-reliability and intelligent power distribution control in high-voltage and high-power scenarios, filling the technical gap in the domestic large-tonnage pure electric vehicle power system.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1-Figure 2 As shown, the present invention provides a CAN-controlled high-voltage multi-channel power distribution control system, including: a power battery pack, a CAN-controlled power distribution box PDU, a six-channel drive motor control module, an oil pump, an air pump, an air conditioner, a PTC, a 24V battery and a vehicle controller VCU. The positive and negative output electrodes of the power battery pack are connected to the CAN-controlled power distribution box PDU, and are distributed to the six-channel drive motor control module, the oil pump, the air pump, the air conditioner, the refrigeration module, the PTC, the 24V battery and the vehicle controller VCU through the CAN-controlled power distribution box PDU. The CAN-controlled power distribution box PDU is connected to the vehicle controller VCU through a CAN bus, and the vehicle controller VCU controls the opening and closing of the contactor of the CAN-controlled power distribution box PDU through CAN bus communication, thereby achieving the purpose of distributing electricity to each power-consuming component.

[0034] The CAN-controlled power distribution box PDU is internally provided with a plurality of auxiliary power distribution circuits and pre-charging circuits, wherein the auxiliary power distribution circuits are the various low-power power distribution circuits of the power distribution box except the main drive circuit, providing circuits and protection for various auxiliary components on the vehicle, such as: air conditioning, electric heater, DCDC vehicle power supply, defrosting, electric air pump, electric oil pump, etc.; each drive system has a pre-charging circuit to prevent the impact of high voltage on the motor controller MCU;

[0035] The auxiliary power distribution circuit includes: air conditioning control circuit, PTC control circuit, refrigeration control circuit, standby control circuit, two-in-one control circuit and multiple pre-charging circuits. The air conditioner is connected through the air conditioning control circuit, the PTC is connected through the PTC control circuit, the refrigeration module is connected through the refrigeration control circuit, the standby control circuit is used for standby, the oil pump and the air pump are connected through the two-in-one control circuit, and the six-way drive motor control module is connected through the pre-charging circuit.

[0036] like Figure 2As shown, the six-way drive motor control module includes drive motor 1, MCU1, drive motor 2, MCU2, drive motor 3, MCU3, drive motor 4, MCU4, drive motor 5, MCU5, drive motor 6, and MCU6. The CAN-controlled distribution box PDU is connected to the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6 through corresponding pre-charging circuits, and the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6 are connected to the corresponding drive motor 1, drive motor 2, drive motor 3, drive motor 4, drive motor 5 and drive motor 6 respectively.

[0037] The air conditioning control circuit includes a K13 contactor and a fuse F7. The positive pole of the power battery pack is connected to the K13 contactor, the K13 contactor is connected to the fuse F7, the fuse F7 is connected to the positive pole of the air conditioner, and the negative pole of the air conditioner is connected to the negative pole of the power battery pack. The K13 contactor is connected to the vehicle controller VCU through the CAN bus. When the air conditioner needs to be started, the vehicle controller VCU closes the K13 contactor of the CAN-controlled distribution box PDU through the CAN communication protocol. When the air conditioner needs to be turned off, the vehicle controller VCU disconnects the K13 contactor through the CAN communication protocol.

[0038] The PTC control circuit includes a K14 contactor and a fuse F8. The positive pole of the power battery pack is connected to the K14 contactor, the K14 contactor is connected to the fuse F8, the fuse F8 is connected to the positive pole of the PTC, and the negative pole of the PTC is connected to the negative pole of the power battery pack. The K14 contactor is connected to the vehicle controller VCU through the CAN bus. When the PTC needs to be started, the vehicle controller VCU closes the K14 contactor of the CAN-controlled distribution box PDU through the CAN communication protocol. When the PTC needs to be turned off, the vehicle controller VCU disconnects the K14 contactor through the CAN communication protocol.

[0039] The refrigeration control circuit includes a K15 contactor and a fuse F9. The positive pole of the power battery pack is connected to the K15 contactor, and the K15 contactor is connected to the fuse F9. The fuse F9 is connected to the positive pole of the refrigeration module, and the negative pole of the refrigeration module is connected to the negative pole of the power battery pack. The K15 contactor is connected to the vehicle controller VCU via a CAN bus, ...

[0040] The backup control circuit includes a K16 contactor and a fuse F10. The positive pole of the power battery pack is connected to the K16 contactor, the K16 contactor is connected to the fuse F10, the fuse F10 is connected to the positive pole of the backup device, the negative pole of the backup device is connected to the negative pole of the power battery pack, and the K16 contactor is connected to the vehicle controller VCU via a CAN bus, ...

[0041] The two-in-one control circuit includes a K17 contactor and a fuse F11. The positive pole of the power battery pack is connected to the K17 contactor, and the K17 contactor is connected to the fuse F11. The fuse F11 is connected to the positive poles of the air pump and the oil pump, and the negative poles of the air pump and the oil pump are connected to the negative pole of the power battery pack. The K17 contactor is connected to the vehicle controller VCU through the CAN bus. When the air pump needs to be started, the vehicle controller VCU closes the K17 contactor of the CAN-controlled distribution box PDU through the CAN communication protocol. When the air pump needs to be turned off, the vehicle controller VCU disconnects the K17 contactor through the CAN communication protocol.

[0042] The pre-charging circuits are provided with six corresponding to the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6, which are respectively the first pre-charging circuit, the second pre-charging circuit, the third pre-charging circuit, the fourth pre-charging circuit, the fifth pre-charging circuit and the sixth pre-charging circuit;

[0043] The first pre-charging circuit includes a K1 contactor, a K7 contactor, a pre-charging resistor 1 and a fuse F1. The positive electrode of the power battery pack is connected to the K1 contactor and the K7 contactor. The K1 contactor is connected to the fuse F1. The K7 contactor is connected to the pre-charging resistor 1. The pre-charging resistor 1 is connected to the fuse F1. The fuse F1 is connected to the positive electrode of the MCU1. The negative electrode of the MCU1 is connected to the negative electrode of the power battery pack. When the drive motor 1 needs to work, the vehicle controller VCU closes the K7 contactor through the CAN communication protocol. After the K7 contactor is closed, when the vehicle controller VCU detects that the voltage value fed back by the controller of the drive motor 1 reaches more than 95% of the power battery voltage value, the vehicle controller VCU closes the K1 contactor and disconnects the K7 contactor at the same time, and the pre-charging is completed.

[0044] The second pre-charging circuit includes a K2 contactor, a K8 contactor, a pre-charging resistor 2 and a fuse F2. The positive electrode of the power battery pack is connected to the K2 contactor and the K8 contactor. The K2 contactor is connected to the fuse F2. The K8 contactor is connected to the pre-charging resistor 2. The pre-charging resistor 2 is connected to the fuse F2. The fuse F2 is connected to the positive electrode of the MCU2. The negative electrode of the MCU2 is connected to the negative electrode of the power battery pack. When the drive motor 2 needs to work, the vehicle controller VCU closes the K8 contactor through the CAN communication protocol. After the K8 contactor is closed, when the vehicle controller VCU detects that the voltage value fed back by the controller of the drive motor 2 reaches more than 95% of the power battery voltage value, the vehicle controller VCU closes the K2 contactor and disconnects the K8 contactor at the same time, and the pre-charging is completed.

[0045] The third pre-charging circuit includes a K3 contactor, a K9 contactor, a pre-charging resistor 3 and a fuse F3. The positive electrode of the power battery pack is connected to the K3 contactor and the K9 contactor. The K3 contactor is connected to the fuse F3. The K9 contactor is connected to the pre-charging resistor 3. The pre-charging resistor 3 is connected to the fuse F3. The fuse F3 is connected to the positive electrode of the MCU3. The negative electrode of the MCU3 is connected to the negative electrode of the power battery pack. When the drive motor 3 needs to work, the vehicle controller VCU closes the K9 contactor through the CAN communication protocol. When the vehicle controller VCU detects that the voltage value fed back by the controller of the drive motor 3 reaches more than 95% of the power battery voltage value after the K9 contactor is closed, the vehicle controller VCU closes the K3 contactor and disconnects the K9 contactor at the same time, and the pre-charging is completed.

[0046] The fourth pre-charging circuit includes a K4 contactor, a K10 contactor, a pre-charging resistor 4 and a fuse F4. The positive electrode of the power battery pack is connected to the K4 contactor and the K10 contactor. The K4 contactor is connected to the fuse F4. The K10 contactor is connected to the pre-charging resistor 4. The pre-charging resistor 4 is connected to the fuse F4. The fuse F4 is connected to the positive electrode of the MCU4. The negative electrode of the MCU4 is connected to the negative electrode of the power battery pack. When the drive motor 4 needs to work, the vehicle controller VCU closes the K10 contactor through the CAN communication protocol. When the vehicle controller VCU detects that the voltage value fed back by the controller of the drive motor 4 reaches more than 95% of the power battery voltage value after the K10 contactor is closed, the vehicle controller VCU closes the K4 contactor and disconnects the K10 contactor at the same time, and the pre-charging is completed.

[0047] The fifth pre-charging circuit includes a K5 contactor, a K11 contactor, a pre-charging resistor 5 and a fuse F5. The positive electrode of the power battery pack is connected to the K5 contactor and the K11 contactor. The K5 contactor is connected to the fuse F5. The K11 contactor is connected to the pre-charging resistor 5. The pre-charging resistor 5 is connected to the fuse F5. The fuse F5 is connected to the positive electrode of the MCU5. The negative electrode of the MCU5 is connected to the negative electrode of the power battery pack. When the drive motor 5 needs to work, the vehicle controller VCU closes the K11 contactor through the CAN communication protocol. When the vehicle controller VCU detects that the voltage value fed back by the controller of the drive motor 5 reaches more than 95% of the power battery voltage value after the K11 contactor is closed, the vehicle controller VCU closes the K5 contactor and disconnects the K11 contactor at the same time, and the pre-charging is completed.

[0048] The first pre-charging circuit includes a K6 contactor, a K12 contactor, a pre-charging resistor 6 and a fuse F6. The positive electrode of the power battery pack is connected to the K6 contactor and the K12 contactor. The K6 contactor is connected to the fuse F6. The K12 contactor is connected to the pre-charging resistor 6. The pre-charging resistor 6 is connected to the fuse F6. The fuse F6 is connected to the positive electrode of the MCU6. The negative electrode of the MCU6 is connected to the negative electrode of the power battery pack. When the drive motor 6 needs to work, the vehicle controller VCU closes the K12 contactor through the CAN communication protocol. When the vehicle controller VCU detects that the voltage value fed back by the controller of the drive motor 6 reaches more than 95% of the power battery voltage value after the K12 contactor is closed, the vehicle controller VCU closes the K6 contactor and disconnects the K12 contactor at the same time, and the pre-charging is completed.

[0049] The K1 contactor, K2 contactor, K3 contactor, K4 contactor, K5 contactor, K6 contactor, K7 contactor, K8 contactor, K9 contactor, K10 contactor, K11 contactor and K12 contactor are connected to the vehicle controller VCU via a CAN bus.

[0050] The application scenario of the product of the present invention is a large-tonnage pure electric mining truck. The present invention takes a 300T pure electric mining truck as an example, with an 800V battery system voltage platform, six motor drive systems, and a total motor system power rating of 600KW and a peak value of 1200KW.

[0051] The present invention provides PDU technical parameters and terminal parameters as shown in Table 1 and Table 2.

[0052] Table 1 PDU technical parameters

[0053]

[0054] Table 2 Terminal block parameters

[0055]

[0056] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0057] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A CAN-controlled high-voltage multi-channel power distribution control system, characterized in that: include: Power battery pack, CAN-controlled power distribution box PDU, six-way drive motor control module, oil pump, air pump, air conditioner, PTC, 24V battery and vehicle controller VCU. The positive and negative output poles of the power battery pack are connected to the CAN-controlled power distribution box PDU, and are distributed to the six-way drive motor control module, oil pump, air pump, air conditioner, refrigeration module, PTC, 24V battery and vehicle controller VCU through the CAN-controlled power distribution box PDU. The CAN-controlled power distribution box PDU is connected to the vehicle controller VCU through the CAN bus. The vehicle controller VCU controls the CAN-controlled power distribution box PDU through CAN bus communication to distribute electricity to each power-consuming component.

2. The control system according to claim 1, characterized in that: The CAN-controlled power distribution box PDU is internally provided with an air-conditioning control circuit, a PTC control circuit, a refrigeration control circuit, a standby control circuit, a two-in-one control circuit and a plurality of pre-charging circuits. The air conditioner is connected via the air-conditioning control circuit, the PTC is connected via the PTC control circuit, the refrigeration module is connected via the refrigeration control circuit, the standby control circuit is used for standby, the oil pump and the air pump are connected via the two-in-one control circuit, and the six-way drive motor control module is connected via the pre-charging circuit.

3. The control system according to claim 2, characterized in that: The six-way drive motor control module includes drive motor 1, MCU1, drive motor 2, MCU2, drive motor 3, MCU3, drive motor 4, MCU4, drive motor 5, MCU5, drive motor 6, and MCU6. The CAN-controlled distribution box PDU is connected to the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6 through corresponding pre-charging circuits, and the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6 are respectively connected to the corresponding drive motor 1, drive motor 2, drive motor 3, drive motor 4, drive motor 5 and drive motor 6.

4. The control system according to claim 2, characterized in that: The air conditioning control circuit includes a K13 contactor and a fuse F7. The positive pole of the power battery pack is connected to the K13 contactor, the K13 contactor is connected to the fuse F7, the fuse F7 is connected to the positive pole of the air conditioner, the negative pole of the air conditioner is connected to the negative pole of the power battery pack, and the K13 contactor is connected to the vehicle controller VCU via a CAN bus.

5. The control system according to claim 2, characterized in that: The PTC control circuit includes a K14 contactor and a fuse F8. The positive pole of the power battery pack is connected to the K14 contactor, the K14 contactor is connected to the fuse F8, the fuse F8 is connected to the positive pole of the PTC, the negative pole of the PTC is connected to the negative pole of the power battery pack, and the K14 contactor is connected to the vehicle controller VCU via a CAN bus.

6. The control system according to claim 2, characterized in that: The refrigeration control circuit includes a K15 contactor and a fuse F9. The positive pole of the power battery pack is connected to the K15 contactor, and the K15 contactor is connected to the fuse F9. The fuse F9 is connected to the positive pole of the refrigeration module, and the negative pole of the refrigeration module is connected to the negative pole of the power battery pack. The K15 contactor is connected to the vehicle controller VCU via a CAN bus.

7. The control system according to claim 2, characterized in that: The backup control circuit includes a K16 contactor and a fuse F10. The positive pole of the power battery pack is connected to the K16 contactor, the K16 contactor is connected to the fuse F10, the fuse F10 is connected to the positive pole of the backup device, the negative pole of the backup device is connected to the negative pole of the power battery pack, and the K16 contactor is connected to the vehicle controller VCU via a CAN bus.

8. The control system according to claim 2, characterized in that: The two-in-one control circuit includes a K17 contactor and a fuse F11. The positive pole of the power battery pack is connected to the K17 contactor, and the K17 contactor is connected to the fuse F11. The fuse F11 is connected to the positive poles of the air pump and the oil pump, and the negative poles of the air pump and the oil pump are connected to the negative pole of the power battery pack. The K17 contactor is connected to the vehicle controller VCU via a CAN bus.

9. The control system according to claim 3, characterized in that: The pre-charging circuits are provided with six corresponding to the MCU1, MCU2, MCU3, MCU4, MCU5 and MCU6, which are respectively the first pre-charging circuit, the second pre-charging circuit, the third pre-charging circuit, the fourth pre-charging circuit, the fifth pre-charging circuit and the sixth pre-charging circuit; The first pre-charging circuit includes a K1 contactor, a K7 contactor, a pre-charging resistor 1 and a fuse F1. The positive electrode of the power battery pack is connected to the K1 contactor and the K7 contactor, the K1 contactor is connected to the fuse F1, the K7 contactor is connected to the pre-charging resistor 1, the pre-charging resistor 1 is connected to the fuse F1, the fuse F1 is connected to the positive electrode of the MCU1, and the negative electrode of the MCU1 is connected to the negative electrode of the power battery pack; The second pre-charging circuit includes a K2 contactor, a K8 contactor, a pre-charging resistor 2 and a fuse F2. The positive electrode of the power battery pack is connected to the K2 contactor and the K8 contactor, the K2 contactor is connected to the fuse F2, the K8 contactor is connected to the pre-charging resistor 2, the pre-charging resistor 2 is connected to the fuse F2, the fuse F2 is connected to the positive electrode of the MCU2, and the negative electrode of the MCU2 is connected to the negative electrode of the power battery pack; The third pre-charging circuit includes a K3 contactor, a K9 contactor, a pre-charging resistor 3 and a fuse F3. The positive electrode of the power battery pack is connected to the K3 contactor and the K9 contactor, the K3 contactor is connected to the fuse F3, the K9 contactor is connected to the pre-charging resistor 3, the pre-charging resistor 3 is connected to the fuse F3, the fuse F3 is connected to the positive electrode of the MCU3, and the negative electrode of the MCU3 is connected to the negative electrode of the power battery pack; The fourth pre-charging circuit includes a K4 contactor, a K10 contactor, a pre-charging resistor 4 and a fuse F4, the positive electrode of the power battery pack is connected to the K4 contactor and the K10 contactor, the K4 contactor is connected to the fuse F4, the K10 contactor is connected to the pre-charging resistor 4, the pre-charging resistor 4 is connected to the fuse F4, the fuse F4 is connected to the positive electrode of the MCU4, and the negative electrode of the MCU4 is connected to the negative electrode of the power battery pack; The fifth pre-charging circuit includes a K5 contactor, a K11 contactor, a pre-charging resistor 5 and a fuse F5, the positive electrode of the power battery pack is connected to the K5 contactor and the K11 contactor, the K5 contactor is connected to the fuse F5, the K11 contactor is connected to the pre-charging resistor 5, the pre-charging resistor 5 is connected to the fuse F5, the fuse F5 is connected to the positive electrode of the MCU5, and the negative electrode of the MCU5 is connected to the negative electrode of the power battery pack; The first pre-charging circuit includes a K6 contactor, a K12 contactor, a pre-charging resistor 6 and a fuse F6. The positive electrode of the power battery pack is connected to the K6 contactor and the K12 contactor. The K6 contactor is connected to the fuse F6. The K12 contactor is connected to the pre-charging resistor 6. The pre-charging resistor 6 is connected to the fuse F6. The fuse F6 is connected to the positive electrode of the MCU6. The negative electrode of the MCU6 is connected to the negative electrode of the power battery pack. The K1 contactor, K2 contactor, K3 contactor, K4 contactor, K5 contactor, K6 contactor, K7 contactor, K8 contactor, K9 contactor, K10 contactor, K11 contactor and K12 contactor are connected to the vehicle controller VCU via a CAN bus.

Images