An auxiliary drive all-in-one integrated power controller assembly

Abstract

The application discloses a kind of auxiliary drive all-in-one integrated power supply controller assembly, including upper cover plate, big contactor and fuse component, wiring terminal seat component, tray component, first DCDC, first DCAC, shell, water cooling component, second DCDC, second DCAC, lower cover plate, the upper cover plate and lower cover plate are respectively connected in the upper and lower ends of shell, big contactor and fuse component, tray component, first DCDC and first DCAC, water cooling component, second DCDC and second DCAC are sequentially arranged in shell from top to bottom, wiring terminal seat component is arranged in shell respectively with first DCDC, first DCAC, second DCDC, second DCAC electrically connected, big contactor and fuse component are electrically connected with wiring terminal seat component;The water cooling component is used for the cooling of power supply controller assembly;The application is higher, can cover compatible multiple DCDC and DCAC use scene, can satisfy two-way fast charging and the demand of multiple MCU and PDU power distribution.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to an auxiliary drive multi-integrated power controller assembly. Background Technology

[0002] In the field of new energy vehicles, the auxiliary drive all-in-one needs to provide power distribution to the whole vehicle and MCU, while also being compatible with DC-DC and DC-AC functions. Traditional technical solutions have low voltage platforms, fewer functions, and poor compatibility, which cannot meet the needs of some application scenarios. Based on the development needs of high voltage platforms in the new energy market and the demand for high-power multi-functional integration, this auxiliary drive all-in-one structural layout scheme was developed.

[0003] Existing auxiliary drive all-in-one technology solutions have the following drawbacks: The existing technology has low input power, which cannot meet the simultaneous input requirements of high-power multi-battery packs; the existing technology has limited functionality, which cannot meet the needs of dual-channel fast charging and multi-channel MCU and PDU power distribution; the integration level is low, integrating only one DC-DC converter and one or two auxiliary drive controllers (DCAC), failing to cover application scenarios compatible with multiple DC-DC converters and DCACs; the existing technology has a voltage platform of 750V, and the structural design and layout cannot meet the safety distance requirements under a 1000V voltage platform; the existing design places the PCB board flat inside the housing, with a separate shielding tray at the bottom, and the tray has through-holes, which cannot effectively shield the PCB. Furthermore, placing it flat on one side of the housing increases the number of through-wall wiring harnesses in both the upper and lower parts of the housing. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-functional auxiliary drive structure arrangement scheme for high-voltage platforms and high power. The integrated structure has a reasonable layout, small overall size, reduced space occupation, convenient assembly, and cost savings.

[0005] The present invention solves the technical problem by adopting the following technical solution: an auxiliary drive multi-integrated power controller assembly, comprising an upper cover plate, a large contactor and fuse component, a terminal block component, a tray component, a first DC-DC converter, a first DC-AC converter, a housing, a water-cooling component, a second DC-DC converter, a second DC-AC converter, and a lower cover plate. The upper cover plate and the lower cover plate are respectively connected to the upper and lower ends of the housing. The large contactor and fuse component, the tray component, the first DC-DC converter and the first DC-AC converter, the water-cooling component, the second DC-DC converter, and the second DC-AC converter are arranged sequentially from top to bottom within the housing. The terminal block component is disposed within the housing and is electrically connected to the first DC-DC converter, the first DC-AC converter, the second DC-DC converter, and the second DC-AC converter. The large contactor and fuse component is electrically connected to the terminal block component. The water-cooling component is used to cool the power controller assembly.

[0006] Optionally, a control component is connected inside the side wall of the housing, and an external component is provided on the side of the housing for connecting external charging and power distribution equipment.

[0007] Optionally, the water-cooled component includes a shell water channel, a water-cooling plate, and two water nozzles. The shell water channel is disposed inside the shell, and the two water nozzles are respectively connected to the left and right sides of the shell and communicate with the two ends of the shell water channel. The water-cooling plate is connected inside the shell, and the first DC-DC converter, the first DC-AC converter, the second DC-DC converter, and the second DC-AC converter are arranged symmetrically up and down along the shell water channel.

[0008] Optionally, the large contactor and fuse component includes multiple large contactors and multiple fuses. The multiple large contactors are electrically connected to the tray component, and the multiple fuses are respectively disposed on the multiple large contactors. The fuses are electrically connected to the corresponding large contactors.

[0009] Optionally, the pallet component includes a pallet, a plurality of small contactors, a pre-charge resistor, and a relay plate, wherein the plurality of small contactors, the pre-charge resistor, and the relay plate are respectively connected to corresponding positions on the upper surface of the pallet.

[0010] Optionally, it also includes a small contactor tray, a shielding tray, and a shielding rib. The shielding rib is connected inside the housing to form a cavity with the housing. The first DC-DC converter and the first DC-AC converter are respectively placed in the corresponding cavities. The small contactor tray is located between the first DC-DC converter and the small contactor and serves as a support component for the plurality of small contactors. The shielding tray is located between the first DC-AC converter and the large contactor and fuse components and serves as a support component for the large contactor and fuse components.

[0011] Optionally, the terminal block includes an output terminal block, an input terminal block, and an output-input terminal block, wherein the output terminal block and the input terminal block are respectively connected to the output-input terminal block.

[0012] Optionally, the input / output terminal block is provided with an input bus negative copper bus, an input bus positive copper bus, a first bus copper bus, an output bus negative copper bus, an output bus positive copper bus, and a second bus copper bus. The input bus negative copper bus, input bus positive copper bus, output bus negative copper bus, and output bus positive copper bus are placed along the height direction of the input / output terminal block. The first bus copper bus is configured in conjunction with the input bus negative copper bus and the input bus positive copper bus, and the second bus copper bus is configured in conjunction with the output bus negative copper bus and the output bus negative copper bus.

[0013] Optionally, the control component includes a control board cover, a control board, a control board placement cavity, an interface board cover, an interface board, and an interface board placement cavity. The control board placement cavity and the interface board placement cavity are respectively disposed at corresponding positions on the side of the housing. The control board is installed in the control board placement cavity, and the control board cover is connected to the opening of the control board placement cavity. The interface board is installed in the interface placement cavity, and the interface board cover is connected to the opening of the interface placement cavity.

[0014] The control board is provided with multiple upper wiring ports and multiple lower wiring ports in its cavity. The control board can be electrically connected to the internal components of the housing through the upper and lower wiring ports.

[0015] Optionally, the external component includes multiple connectors, two fast charging interfaces, a first DC-DC interface, a second DC-DC interface, a low-voltage interface, an output wiring window, and an input wiring window;

[0016] The connector, fast charging interface, first DC-DC interface, second DC-DC interface, and low-voltage interface are respectively located on the left and right side walls of the housing, and the output wiring window and input wiring window are located on the front or rear side wall of the housing.

[0017] The connectors are respectively provided with 2-pin connectors, 3-pin connectors, and 4-pin connectors. The fast charging interface includes a fast charging positive interface and a fast charging negative interface. The fast charging positive interface and the fast charging negative interface are respectively connected to the fast charging cable that extends downwards. The output wiring window and the input wiring window are respectively connected to the input power line that extends downwards and the output power line that extends downwards.

[0018] The present invention has the following beneficial effects:

[0019] 1. This invention has a high degree of integration, which can cover and be compatible with multiple DC-DC and DC-AC application scenarios, and can meet the needs of dual-channel fast charging and multiple MCU and PDU power distribution;

[0020] 2. This invention solves the problems of multi-input / output power interface structure layout and multi-channel DC-DC and DC-AC integration, as well as the cooling and electromagnetic interference shielding problems after integration, thus realizing the need for more functional expansion;

[0021] 3. The integrated structure of this invention is reasonably arranged, with a small overall size, which reduces the space occupied, facilitates assembly, and saves costs. Attached Figure Description

[0022] Figure 1 This is an exploded view of the entire machine of the present invention;

[0023] Figure 2 This is a perspective view of the present invention;

[0024] Figure 3 This is a perspective view of the invention from another direction;

[0025] Figure 4 This is the front view of the present invention;

[0026] Figure 5 This is a structural diagram of the input / output terminal block of the present invention;

[0027] Figure 6 This is a front view of the first DC-DC converter and the first DC-AC converter structure of the present invention;

[0028] Figure 7 This is a structural diagram of the second DC-DC converter and the second DC-AC converter on the reverse side of the present invention;

[0029] Figure 8 This is a structural diagram of the control component of the present invention;

[0030] Figure 9 This is a cross-sectional view of the present invention;

[0031] The markings in the diagram are as follows: 10-Top cover plate; 20-Large contactor and fuse assembly; 21-Large contactor; 22-Fuse; 30-Terminal block assembly; 31-Output terminal block; 32-Input terminal block; 40-Tray assembly; 41-Tray; 42-Small contactor; 45-Small contactor tray; 46-Shielding tray; 47-Shielding rib; 50-First DC-DC converter; 60-First DC-AC converter; 51-Second DC-DC converter; 61-Second DC-AC converter; 70-Housing; 80-Water-cooling assembly; 81-Housing water channel; 82-Water-cooling plate; 83-Water nozzle; 91-Control panel cover plate; 92-... - Control board; 93 - Control board placement cavity; 94 - Interface board cover; 95 - Interface board; 96 - Interface board placement cavity; 331 - Input bus negative copper busbar; 332 - Input bus positive copper busbar; 333 - Output bus negative copper busbar; 334 - Output bus positive copper busbar; 701 - Connector; 702 - Fast charging interface; 703 - First DC-DC interface; 704 - Second DC-DC interface; 705 - Low voltage interface; 706 - Output wiring window; 707 - Input wiring window; 931 - Upper wiring port; 932 - Lower wiring port; 7021 - Fast charging positive interface; 7022 - Fast charging negative interface. Detailed Implementation

[0032] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings. Example 1

[0033] This embodiment provides an auxiliary drive multi-integrated power controller assembly, including an upper cover plate 10, a large contactor and fuse component 20, a terminal block component 30, a tray component 40, a first DC-DC converter 50, a first DC-AC converter 60, a housing 70, a water-cooling component 80, a second DC-DC converter 51, a second DC-AC converter 61, and a lower cover plate 11. The upper cover plate 10 and the lower cover plate 11 are respectively connected to the upper and lower ends of the housing 70. The large contactor and fuse component 20, the tray component 40, the first DC-DC converter 50 and the first DC-AC converter 60, the water-cooling component 80, the second DC-DC converter 51 and the second DC-AC converter 61 are arranged sequentially from top to bottom within the housing 70. The terminal block component 30 is disposed within the housing 70 and is electrically connected to the first DC-DC converter 50, the first DC-AC converter 60, the second DC-DC converter 51, and the second DC-AC converter 61. The large contactor and fuse component 20 is electrically connected to the terminal block component 30. The water-cooling component 80 is used to cool the power controller assembly.

[0034] It has a high degree of integration and can cover application scenarios that are compatible with multiple DC-DC and DC-AC circuits. It can meet the needs of dual-channel fast charging and multiple-channel MCU and PDU power distribution.

[0035] In a further embodiment of this invention, a control component is connected inside the side wall of the housing 70, and an external component is provided on the side of the housing 70. The external component is used to connect to external charging and power distribution equipment.

[0036] In the prior art, the PCB board, i.e. the control component, is placed flat inside the housing 70, with a separate shielding tray at the bottom. The tray has wire holes, which cannot effectively shield the PCB. At the same time, placing it flat on one side of the housing 70 increases the number of through-wall wiring harnesses in the upper and lower parts of the housing 70. The present invention can solve this problem well by setting the control component inside the side wall of the housing 70.

[0037] In a further embodiment of this example, the water-cooled component 80 includes a housing water channel 81, a water-cooling plate 82, and two water nozzles 83. The housing water channel 81 is disposed inside the housing 70. The two water nozzles 83 are respectively connected to the left and right sides of the housing 70 and are respectively connected to both ends of the housing water channel 81. The water-cooling plate 82 is connected inside the housing 70. The first DC-DC50, the first DC-AC60, the second DC-DC51, and the second DC-AC61 are arranged symmetrically up and down along the housing water channel 81.

[0038] In a further embodiment of this example, the large contactor and fuse component 20 includes a plurality of large contactors 21 and a plurality of fuses 22. The plurality of large contactors 21 are electrically connected to the tray component 40, and the plurality of fuses 22 are respectively disposed on the plurality of large contactors 21. The fuses 22 are electrically connected to the corresponding large contactors 21.

[0039] In a further embodiment of this example, the tray component 40 includes a tray 41, a plurality of small contactors 42, a pre-charge resistor, and a relay plate, wherein the plurality of small contactors 42, the pre-charge resistor, and the relay plate are respectively connected to corresponding positions on the upper surface of the tray 41.

[0040] A further embodiment of this invention includes a small contactor tray 45, a shielding tray 46, and a shielding rib 47. The shielding rib 47 is connected inside the housing 70 and forms a cavity with the housing 70. The first DC-DC50 and the first DC-AC60 are respectively placed in their respective cavities. The small contactor tray 45 is located between the first DC-DC50 and the small contactor 42 and serves as a support component for the plurality of small contactors 42. The shielding tray 46 is located between the first DC-AC60 and the large contactor and fuse component 20 and serves as a support component for the large contactor and fuse component 20.

[0041] In a further embodiment of this invention, the terminal block 30 includes an output terminal block 31, an input terminal block 32, and an output-input terminal block, wherein the output terminal block 31 and the input terminal block 32 are respectively connected to the output-input terminal block.

[0042] In a further embodiment of this example, the input / output terminal block is provided with an input bus negative copper bus 331, an input bus positive copper bus 332, a first bus copper bus 335, an output bus negative copper bus 333, an output bus positive copper bus 334, and a second bus copper bus 336. The input bus negative copper bus 331, input bus positive copper bus 332, output bus negative copper bus 333, and output bus positive copper bus 334 are placed along the height direction of the input / output terminal block. The first bus copper bus 335 is configured to cooperate with the input bus negative copper bus 331 and the input bus positive copper bus 332, and the second bus copper bus 336 is configured to cooperate with the output bus negative copper bus 333 and the output bus negative copper bus 334.

[0043] The use of three copper busbars for both the output and input busbars ensures that even when some input / output connection points are not in use, all connected connection points can still be connected in parallel. Connection points on the front of the housing can be used arbitrarily to meet the needs of different application scenarios. The three copper busbars allow contactors to be connected nearby, reducing the amount of copper busbars used and lowering costs.

[0044] In a further embodiment of this example, the control component includes a control board cover 91, a control board 92, a control board placement cavity 93, an interface board cover 94, an interface board 95, and an interface board placement cavity 96. The control board placement cavity 93 and the interface board placement cavity 96 are respectively disposed at corresponding positions on the side of the housing 70. The control board 92 is installed in the control board placement cavity 93, the control board cover 91 is connected to the opening of the control board placement cavity 93, the interface board 95 is installed in the interface placement cavity 96, and the interface board cover 94 is connected to the opening of the interface placement cavity 96.

[0045] The control board placement cavity 93 is provided with multiple upper wiring ports 931 and multiple lower wiring ports 932. The control board 92 can be electrically connected to the internal components of the housing 70 through the upper wiring ports 931 and the lower wiring ports 932.

[0046] In a further embodiment of this example, the external component includes multiple connectors 701, two fast charging interfaces 702, a first DC-DC interface 703, a second DC-DC interface 704, a low-voltage interface 705, an output wiring window 706, and an input wiring window 707.

[0047] The connector 701, fast charging interface 702, first DC-DC interface 703, second DC-DC interface 704, and low-voltage interface 705 are respectively disposed on the left and right side walls of the housing 70, and the output wiring window 706 and input wiring window 707 are disposed on the front or rear side wall of the housing 70.

[0048] The connector 701 is provided with a 2-pin connector, a 3-pin connector, and a 4-pin connector. The fast charging interface 702 includes a fast charging positive interface 7021 and a fast charging negative interface 7022. The fast charging positive interface 7021 and the fast charging negative interface 7022 are respectively connected to the fast charging cable that extends downwards. The output wiring window 706 and the input wiring window 707 are respectively connected to the input power line that extends downwards and the output power line that extends downwards.

[0049] It should be noted that: such as Figure 1As shown, this patented solution mainly consists of the following parts: an upper cover plate 10, a large contactor and fuse component 20, a terminal block component 30, a tray component 40, a first DC-DC converter 50, a first DC-AC converter 60, a housing 70, a water-cooling component 80, a second DC-DC converter 51, a second DC-AC converter 61, and a lower cover plate 11. The housing 70 has a two-layer structure with two cover plates, namely the upper cover plate 10 and the lower cover plate 11, which mainly divide the space of the entire housing 70. The lower part of the housing 70 is equipped with the second DC-DC converter 51 and the second DC-AC converter 61. The first part of the upper part of the housing 70 is equipped with the first DC-DC converter 50 and the first DC-AC converter 60. The tray component 40, located in the second part of the upper part of the housing 70, is arranged above the first DC-DC converter 50 and the first DC-AC converter 60. Seven small contactors 42, a pre-charge resistor 43, and a relay board 44, etc., are arranged on the tray 41. The third part of the upper part of the housing 70 is a large contactor and fuse assembly 20, which contains six large contactors arranged closely together. Above the contactors are ten small fuses and six large contactors. The fourth part of the upper part of the housing 70 is located on the side of the housing 70, and a terminal block assembly 30 is arranged on the side of the housing 70. The overall structure of the housing 70 is slender, which facilitates the arrangement of the entire vehicle in narrow spaces. The space in the height direction of the housing 70 is fully utilized, and the internal layout is reasonable and the structure is compact.

[0050] like Figure 2 As shown in Figure 3, the side wiring harness exit method in this embodiment is reasonably arranged, which facilitates the layout of the vehicle wiring harness.

[0051] Numerous side interfaces on the housing 70, combined with internal contactors, fuses 22, and contactor boards, can provide up to 10 PDU power distribution channels, 2 fast charging channels, 2 DC-DC channels, and 2 DC-AC channels for the entire vehicle, offering powerful functionality. By adjusting the number of internal contactors, fuses 22, and the routing of copper busbars, flexible selection of interfaces and internal configurations can be achieved, ensuring high compatibility and meeting the functional and interface location requirements of different vehicles.

[0052] like Figure 4 The diagram shows the front interface layout of the housing 70 in this embodiment. The front of the housing 70 mainly serves as the location for the battery input wiring and MCU power distribution lines in the structural design. It mainly includes the following features: input wiring window 707, input power lines, output wiring window 706, and output power lines. The input wiring window 707 can support up to 6 positive and negative inputs, meeting the needs of simultaneous input from 6 battery packs. The output wiring window 706 can provide power distribution to up to 4 MCUs. The input and output wiring positions are stepped, with the outgoing lines pointing horizontally downwards, fully utilizing the wiring space in the housing and resulting in a compact overall wiring design. This solution is suitable for high-power applications involving multiple battery packs and multiple MCUs in new energy vehicle models.

[0053] like Figure 5The diagram shows the layout of the input / output terminal blocks in this embodiment. The main components are as follows: 331 Input bus negative copper busbar, 332 Input bus positive copper busbar, 333 Output bus negative copper busbar, and 334 Output positive copper busbar. The two busbars, 331 and 332, are placed along the height of the housing, reducing the usable volume occupied by wiring within the housing and making full use of the vertical space. The arrangement of the two busbars ensures that even when some input / output connection points are not in use, all connected connection points can still be connected in parallel, allowing arbitrary use of the connection points on the front of the housing to meet the needs of different application scenarios. The two busbars allow contactors to be connected close together, reducing the amount of copper busbars used and lowering costs.

[0054] like Figure 6 The diagram shows the front view of DC-DC1 and DC-AC1 in this embodiment. It includes a small contactor tray 45, a DC-AC shielding tray 46, and a shielding rib plate 47. The first DC-DC50 and the first DC-AC60 are placed inside the cavity formed by the shielding rib plate 47 and the housing 70, and are covered by the small contactor tray 45 and the DC-AC shielding tray 46. The small contactor tray 45 and the DC-AC shielding tray 46 also serve as support components for the small contactor 42, the large contactor, and the fuse component 20 in the upper tray component 40.

[0055] like Figure 7 The diagram shows the reverse side structure of DC-DC2 and DC-AC2 in this embodiment. The casing includes a water channel 81 and a water-cooling plate 82. The water-cooling plate 82 is fixed to the casing 70 with bolts, forming the cooling water path of the casing 70. The second DC-DC51 and second DC-AC61 on the reverse side are symmetrically arranged vertically along the water channel with the first DC-DC50 and first DC-AC60 on the front side, sharing the same cooling water path to fully utilize the heat dissipation capacity of the water channel.

[0056] The reverse side of housing 70 houses only the second DC-DC51 and the second DCAC61. The first DC-DC50 and the first DCAC60 are housed in an independent cavity formed by the shielding rib 47, the DCAC shielding tray 46, and housing 70. Both DC-DC and DCAC circuits are housed within this independent cavity, with control and output wiring harnesses routed within the cavity, effectively isolating them from other external high-voltage components. This solves the electromagnetic interference problem associated with the auxiliary drive's multi-in-one compatibility with multiple DC-DC and DCAC circuits.

[0057] like Figure 8The diagram shows the PCB and control component layout of this embodiment. The main components and features are: 91 control board cover, control board 92, control board placement cavity 93, upper housing wiring port 931, lower housing wiring port 932, interface board cover 94, interface board 95, and interface board placement cavity 96. The control board 92 is fixed inside the control board placement cavity 93 on the housing 70, and is covered by the control board cover 91. The interface board 95 is fixed inside the interface board placement cavity 96 on the housing 70, and is covered by the interface board cover 94. Both the control board 92 and the interface board 95 are placed in independent cavities on the housing 70, effectively shielding them from electromagnetic interference from other components. The control board 92 stands upright on the side of the housing 70, and the control board placement cavity 93 has an upper housing wiring port 931 and a lower housing wiring port 932 at its top and bottom. The two wiring ports lead to the upper part and the lower part of the housing 70 respectively, reducing the use of through-wall wiring harnesses inside the housing 70 and facilitating the assembly of the whole machine.

[0058] In summary, this technical solution provides a structural layout scheme for an auxiliary drive all-in-one controller. Through flexible interface design, a rational layout along the height of the housing, and a side-mounted PCB layout, this solution achieves higher compatibility, more comprehensive functions, a more compact structure, and better suitability for the application scenarios of high-power new energy vehicles.

[0059] The order of the above embodiments is for ease of description only and does not represent the superiority or inferiority of the embodiments.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An auxiliary drive multi-functional integrated power controller assembly, characterized in that, The power controller assembly includes an upper cover plate, a large contactor and fuse assembly, a terminal block assembly, a tray assembly, a first DC-DC converter, a first DC-AC converter, a housing, a water-cooling assembly, a second DC-DC converter, a second DC-AC converter, and a lower cover plate. The upper and lower cover plates are respectively connected to the upper and lower ends of the housing. The large contactor and fuse assembly, the tray assembly, the first DC-DC converter and first DC-AC converter, the water-cooling assembly, the second DC-DC converter, and the second DC-AC converter are arranged sequentially from top to bottom within the housing. The terminal block assembly is disposed within the housing and is electrically connected to the first DC-DC converter, the first DC-AC converter, the second DC-DC converter, and the second DC-AC converter. The large contactor and fuse assembly is electrically connected to the terminal block assembly. The water-cooling assembly is used to cool the power controller assembly. The control component is connected inside the side wall of the housing, and an external component is provided on the side of the housing. The external component is used to connect to external charging and power distribution equipment. The control component includes a control board cover, a control board, a control board placement cavity, an interface board cover, an interface board, and an interface board placement cavity. The control board placement cavity and the interface board placement cavity are respectively located at corresponding positions on the side of the housing. The control board is installed in the control board placement cavity, and the control board cover is connected to the opening of the control board placement cavity. The interface board is installed in the interface placement cavity, and the interface board cover is connected to the opening of the interface placement cavity. The control board is provided with multiple upper wiring ports and multiple lower wiring ports in its cavity. The control board can be electrically connected to the internal components of the housing through the upper and lower wiring ports.

2. The auxiliary drive multi-integrated power controller assembly according to claim 1, characterized in that, The water-cooled component includes a shell water channel, a water-cooling plate, and two water nozzles. The shell water channel is located inside the shell, and the two water nozzles are respectively connected to the left and right sides of the shell and are respectively connected to the two ends of the shell water channel. The water-cooling plate is connected inside the shell. The first DC-DC converter and the first DC-AC converter are arranged symmetrically up and down along the shell water channel.

3. The auxiliary drive multi-integrated power controller assembly according to claim 1, characterized in that, The large contactor and fuse component includes multiple large contactors and multiple fuses. The multiple large contactors are electrically connected to the tray component, and the multiple fuses are respectively disposed on the multiple large contactors. The fuses are electrically connected to the corresponding large contactors.

4. The auxiliary drive multi-integrated power controller assembly according to claim 3, characterized in that, The pallet component includes a pallet, multiple small contactors, a pre-charge resistor, and a relay plate, with the multiple small contactors, pre-charge resistor, and relay plate respectively connected to corresponding positions on the upper surface of the pallet.

5. The auxiliary drive multi-integrated power controller assembly according to claim 4, characterized in that, It also includes a small contactor tray, a shielding tray, and a shielding rib. The shielding rib is connected inside the housing and forms a cavity with the housing. The first DC-DC converter and the first DC-AC converter are respectively placed in the corresponding cavities. The small contactor tray is located between the first DC-DC converter and the small contactor and serves as a support component for the plurality of small contactors. The shielding tray is located between the first DC-AC converter and the large contactor and fuse components and serves as a support component for the large contactor and fuse components.

6. The auxiliary drive multi-integrated power controller assembly according to claim 1, characterized in that, The terminal block includes an output terminal block, an input terminal block, and an output-input terminal block, with the output terminal block and the input terminal block respectively connected to the output-input terminal block.

7. The auxiliary drive multi-integrated power controller assembly according to claim 6, characterized in that, The input / output terminal block is provided with an input bus negative copper bus, an input bus positive copper bus, a first bus copper bus, an output bus negative copper bus, an output bus positive copper bus, and a second bus copper bus. The input bus negative copper bus, input bus positive copper bus, output bus negative copper bus, and output bus positive copper bus are placed along the height direction of the input / output terminal block. The first bus copper bus is configured in conjunction with the input bus negative copper bus and the input bus positive copper bus, and the second bus copper bus is configured in conjunction with the output bus negative copper bus and the output bus negative copper bus.

8. The auxiliary drive multi-integrated power controller assembly according to claim 1, characterized in that, The external components include multiple connectors, two fast charging ports, a first DC-DC interface, a second DC-DC interface, a low-voltage interface, an output wiring window, and an input wiring window; The connector, fast charging interface, first DC-DC interface, second DC-DC interface, and low-voltage interface are respectively located on the left and right side walls of the housing, and the output wiring window and input wiring window are located on the front or rear side wall of the housing. The connectors are respectively provided with 2-pin connectors, 3-pin connectors, and 4-pin connectors. The fast charging interface includes a fast charging positive interface and a fast charging negative interface. The fast charging positive interface and the fast charging negative interface are respectively connected to the fast charging cable that extends downwards. The output wiring window and the input wiring window are respectively connected to the input power line that extends downwards and the output power line that extends downwards.

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