New energy automobile domain controller water cooling plate heat dissipation structure

Abstract

The utility model discloses a new energy automobile domain controller water cooling plate heat radiation structure which can reliably carry out synchronous heat radiation on heat source concentration areas of different areas and ensure good economical efficiency of the whole structure. The device is characterized by comprising an upper cover plate which is arranged on a to-be-laminated surface of the domain controller in a profiling manner; the runner cavity plate comprises a bottom plate, a peripheral baffle and an inner partition plate, the peripheral baffle protruding upwards is arranged on the periphery of the bottom plate, the inner partition plate is arranged in a cavity formed by splicing the peripheral baffle and the bottom plate, and the inner partition plate divides the cavity into a single-flow-direction circulation channel covering the whole cavity. The base comprises a central concave cavity area, a peripheral mounting positioning mechanism and a fixed mounting hole; and a plurality of groups of heat exchange fins.

Description

Technical Field

[0001] The present invention relates to the technical field of water cooling heat dissipation structures, and in particular to a water cooling plate heat dissipation structure for a domain controller of a new energy vehicle. Background Art

[0002] More and more automotive electronic chips are being used, from traditional engine control systems, airbags, anti-lock braking systems, electric power steering, electronic stability systems, headlight control, air conditioning, water pumps and oil pumps, instruments, and entertainment audio-visual systems, to the now widely used tire pressure monitoring systems, keyless entry and start systems, electric seat heating adjustment, as well as the assisted driving systems, matrix headlights, and ambient lights that are being popularized. The existing automotive electronic and electrical architectures are all distributed, and the various ECUs in the car are connected together through CAN and LIN buses. Now the number of ECUs in the car has rapidly increased to dozens or even hundreds, posing a challenge to the distributed architecture, which is increasingly moving towards a centralized one, and the automotive domain controller DCU (Domain Control Unit) has come into being.

[0003] The existing water-cooled plate heat dissipation structure needs to be independently set up for the two or three groups of heat source concentration areas of the automotive domain controller, and each group of water-cooled heat dissipation structures needs to be set up with independent water-cooled heat exchange pipelines, which makes the subsequent assembly of the heat dissipation structure time-consuming and labor-intensive; and once the entire surface area of ​​the automotive domain controller is covered with heat exchange fins, the cost of the heat exchange structure will increase, and because all the heat exchange fins are evenly distributed, it is easy to cause the heat exchange efficiency near the water inlet to be much greater than the heat exchange efficiency far away from the water inlet. For this reason, it is urgent to develop a water-cooled plate heat dissipation structure that can reliably and economically exchange heat and ensure that the cooling of adjacent interval heat source concentration areas is synchronized. Summary of the invention

[0004] In view of the above problems, the present invention provides a water-cooled plate heat dissipation structure for a new energy vehicle domain controller, which can reliably synchronize the temperatures of heat source concentration areas in different regions and ensure the good economy of the entire structure.

[0005] A water cooling plate heat dissipation structure of a new energy vehicle domain controller, characterized in that it comprises:

[0006] An upper cover plate, which is arranged in the shape of a surface to be attached to the domain controller;

[0007] A flow channel cavity plate, comprising a bottom plate, an outer baffle plate, and an inner partition plate, wherein an outer convex outer baffle plate is disposed on the periphery of the bottom plate, and an inner partition plate is disposed in a cavity formed by the outer baffle plate and the bottom plate, wherein the inner partition plate divides the cavity into a flow passage with a single flow direction and covers the entire cavity;

[0008] A base, comprising a central concave cavity area, a peripheral mounting positioning mechanism, and a fixing hole;

[0009] and a plurality of groups of heat exchange fins;

[0010] The coolant passes through several heat source concentration areas of the pre-controller in sequence along the flow passage, a group of heat exchange fins is respectively arranged at the corresponding position of each heat source concentration area, and at least one flow passage with a constricted flow direction is arranged between adjacent heat exchange fins along the flow direction of the coolant, the surface area of ​​each group of heat exchange fins covers the heat source concentration area at the corresponding position, each group of heat exchange fins is fixed in the surface area of ​​the flow passage, the transverse surface area of ​​each group of heat exchange fins covers the width area of ​​the flow passage of the corresponding area, the bottom area of ​​each group of heat exchange fins fits the upper surface of the bottom plate, the top area of ​​each group of heat exchange fins fits the lower surface of the upper cover plate, the transverse end walls of each group of heat exchange fins fit the corresponding side elevations of the outer baffle plate and the inner partition plate, and the flow direction of the coolant in each group of heat exchange fins is set to be the same as the flow direction of the flow passage;

[0011] The upper cover plate is provided with a liquid inlet corresponding to the starting end position of the flow passage, and the upper cover plate is provided with a liquid outlet corresponding to the end position of the flow passage;

[0012] The flow channel cavity plate is fixed to the central concave cavity area of ​​the base, the upper cover plate is covered on the upper surface of the flow channel cavity plate, and the upper periphery of the upper cover plate is welded to the corresponding contour edge of the base.

[0013] It is further characterized by:

[0014] Several groups of heat exchange fins are sequentially arranged along the flow path as the first heat exchange fin, the second heat exchange fin, the third heat exchange fin, ..., the Nth heat exchange fin, wherein N is a natural number greater than or equal to 2. In two adjacent groups of heat exchange fins, the transverse width of the heat exchange fins located at the front section of the flow path is 20% to 30% greater than the transverse width of the heat exchange fins at the rear end of the flow path, which ensures that the flow rate of the coolant near the liquid inlet is slow, while the flow rate of the coolant near the liquid outlet is fast, thereby making the temperature reduction amplitude of the adjacent heat source concentration areas synchronous and reliable, and there will be no uneven temperature reduction phenomenon such as a large temperature reduction amplitude near the liquid inlet and a small temperature reduction amplitude near the liquid outlet;

[0015] Each group of heat exchange fins is any one of D-type right-angle stacked heat exchange fins, H-type bent heat exchange fins, and I-type folded heat exchange fins;

[0016] All heat exchange fins are of the same model;

[0017] All heat exchange fins are of different models;

[0018] The cavity formed by the combination of the outer baffle plate and the bottom plate is a structure with a wide front end cavity and a narrow rear end cavity. The inner partition plates are arranged from front to back, and the inner partition plates reliably divide the front end width into two different flow channels. A flow opening is left between the rear end of the inner partition plate and the inner vertical plate of the outer baffle plate at the corresponding position.

[0019] The inner partition plate divides the front wide mouth body into a first wide mouth liquid inlet flow channel and a second narrow mouth liquid outlet flow channel, and the inner partition plate divides the rear narrow mouth body into a third narrow mouth transition flow channel and a fourth wide mouth transition flow channel, the third narrow mouth transition flow channel is connected to the fourth wide mouth transition flow channel through the flow port, the lateral width of the first wide mouth liquid inlet flow channel is greater than the lateral width of the fourth width transition flow channel, the lateral width of the fourth width transition flow channel is greater than the lateral width of the second narrow mouth liquid outlet flow channel; the lateral width of the fourth width transition flow channel is greater than the lateral width of the third narrow mouth transition flow channel;

[0020] The front wide cavity body is provided with liquid inlets and outlets on both sides corresponding to the inner partition plate, the liquid inlet and outlet corresponding to the starting end of the first wide-mouth inlet flow channel is the liquid inlet, and the liquid inlet and outlet corresponding to the end of the second narrow-mouth inlet flow channel is the liquid outlet;

[0021] When the vehicle domain controller is provided with two heat source concentration areas, the entire heat dissipation structure includes two groups of heat exchange fins, the two groups of heat exchange fins are specifically the first heat exchange fins and the second heat exchange fins, the surface areas of the first heat exchange fins and the second heat exchange fins cover the heat source concentration areas at corresponding positions, the first heat exchange fins are located in the heat source concentration area corresponding to the first wide-mouth inlet flow channel, and the second heat exchange fins are located in the heat source concentration area corresponding to the fourth wide-mouth transition flow channel;

[0022] The structure of the rear narrow cavity body is specifically that the middle and rear sections of the peripheral baffle are provided with an inwardly concave arc-shaped guide section and a straight splicing end, the inner partition plate includes a first straight section, a second arc-shaped guide section, and a third straight section from front to back, the second arc-shaped guide section is arranged in the shape of the inwardly concave arc-shaped guide section, and the arrangement of the inwardly concave arc-shaped guide section and the second arc-shaped guide section makes the flow direction of the coolant smooth and reliable;

[0023] A pair of guide plates are provided at the position of the bottom plate corresponding to the liquid inlet, and the two guide plates are arranged in an eight-shaped shape for guiding the coolant to the rear flow channel;

[0024] The angled positions where the outer baffle plate and the inner partition plate are connected are all arc transitions, ensuring that the flow of the coolant is smooth and reliable.

[0025] After adopting the above technical scheme, driven by an external pump, the coolant enters from the liquid inlet and passes through the heat exchange fins corresponding to several heat source concentration areas of the pre-controller in sequence along the flow channel. Since at least one section of the flow passage with a narrowed flow direction is arranged between adjacent heat exchange fins along the flow direction of the coolant, the flow rate of the coolant near the liquid inlet is slow, while the flow rate of the coolant near the liquid outlet is fast, so that the cooling amplitude of adjacent heat source concentration areas is synchronized and reliable, and there will be no uneven cooling phenomenon such as a large cooling amplitude near the liquid inlet and a small cooling amplitude near the liquid outlet; and since the arrangement of the heat dissipation fins is not the entire flow channel arrangement, but only arranged in the heat source concentration area, the production cost of the entire heat dissipation structure is relatively reduced, and the economy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a three-dimensional exploded view of a specific embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of a three-dimensional exploded view of a specific embodiment 2 of the present invention;

[0028] Figure 3 It is a three-dimensional diagram of a second specific embodiment of the present invention;

[0029] Figure 4 It is a three-dimensional diagram of a flow channel cavity plate according to a second specific embodiment of the present invention;

[0030] Figure 5 A three-dimensional schematic diagram of a D-shaped right-angle stacked heat exchange fin applicable to the present invention;

[0031] Figure 6 It is a three-dimensional schematic diagram of an H-shaped bent heat exchange fin applicable to the present invention;

[0032] Figure 7 It is a three-dimensional schematic diagram of an I-type folded heat exchange fin applicable to the present invention;

[0033] Figure 8 It is a schematic top view of the coolant flow direction after the heat exchange fins are arranged according to the specific embodiment 2 of the present invention;

[0034] Fig. 9 It is a schematic diagram of the assembly process of the present invention;

[0035] The names corresponding to the serial numbers in the figure are as follows:

[0036] Upper cover plate 10, liquid inlet 11, liquid outlet 12, flow channel cavity plate 20, support block 201, support column 202, bottom plate 21, outer baffle plate 22, inner concave arc guide section 221, straight splicing end 222, inner partition plate 23, first straight section 231, second arc guide section 232, third straight section 233, flow port 24, first wide liquid inlet flow channel 25, second narrow liquid outlet flow channel 26, third narrow transition flow channel 27 , a fourth wide-mouth transition channel 28, a guide vane 29, a base 30, a central concave cavity area 31, a peripheral mounting positioning mechanism 32, a fixing hole 33, a contour edge 34, a heat exchange fin 40, a D-type right-angle stacked heat exchange fin 401, an H-type bent heat exchange fin 402, an I-type folded heat exchange fin 403, a first heat exchange fin 41, a second heat exchange fin 42, a third heat exchange fin 43, a liquid inlet nozzle 50, and a liquid outlet nozzle 60. DETAILED DESCRIPTION

[0037] A water cooling plate heat dissipation structure of a new energy vehicle domain controller, see Figure 1-Figure 9 , which includes an upper cover plate 10, a flow channel cavity plate 20, a base 30, a plurality of groups of heat exchange fins 40, a liquid inlet nozzle 50, and a liquid outlet nozzle 60;

[0038] The upper cover plate 10 is arranged in the shape of the surface to be attached to the domain controller;

[0039] The flow channel cavity plate 20 includes a bottom plate 21, an outer baffle plate 22, and an inner partition plate 23. The outer periphery of the bottom plate 21 is provided with an upwardly convex outer baffle plate 22. The inner partition plate 23 is provided in the cavity formed by the outer baffle plate 22 and the bottom plate 21. The inner partition plate 23 divides the cavity into a flow passage with a single flow direction and covers the entire cavity.

[0040] The base 30 includes a central concave cavity area 31, a peripheral mounting positioning mechanism 32, and a fixing hole 33, wherein the peripheral mounting positioning mechanism 31 is used to avoid or place external devices, and the fixing holes 33 are respectively located at the four corners of the base 30, and are used to fix the entire water-cooling plate heat dissipation structure;

[0041] The coolant passes through several heat source concentration areas of the pre-controller in sequence along the circulation passage, and a group of heat exchange fins 40 are respectively arranged at the corresponding position of each heat source concentration area, and at least one section of the circulation passage with a contracted flow direction is arranged between adjacent heat exchange fins 40 along the flow direction of the coolant, and the surface area of ​​each group of heat exchange fins 40 covers the heat source concentration area at the corresponding position, and each group of heat exchange fins 40 is fixed in the surface area of ​​the circulation passage, and the transverse surface area of ​​each group of heat exchange fins 40 covers the width area of ​​the circulation passage in the corresponding area, and the bottom area of ​​each group of heat exchange fins 40 is attached to the upper surface of the bottom plate, and the top area of ​​each group of heat exchange fins 40 is attached to the lower surface of the upper cover plate, and the transverse end walls of each group of heat exchange fins 40 are respectively attached to the corresponding side elevations of the outer baffle plate 22 and the inner partition plate 23, and the flow direction of the coolant in each group of heat exchange fins 40 is set to be the same as the flow direction of the circulation passage;

[0042] The upper cover plate 10 is provided with a liquid inlet 11 corresponding to the starting end of the flow passage, and a liquid inlet nozzle 50 is installed on the liquid inlet 11; the upper cover plate 10 is provided with a liquid outlet 12 corresponding to the end of the flow passage, and a liquid outlet nozzle 60 is installed on the liquid outlet 12;

[0043] The flow channel cavity plate 20 is fixed to the central concave cavity area 31 of the base 30, and the upper cover plate 10 is covered on the upper surface of the flow channel cavity plate 20. The upper periphery of the upper cover plate 10 is welded to the corresponding contour edge 34 of the base 30 to ensure that the upper surface of the upper cover plate 10 and the upper surface of the base 30 are arranged flush.

[0044] In a specific implementation, each group of heat exchange fins 40 is any one of D-type right-angle stacked heat exchange fins 401, H-type bent heat exchange fins 402, and I-type folded heat exchange fins 403;

[0045] All the heat exchange fins 40 are heat exchange fins of the same model;

[0046] Or all the heat exchange fins 40 are of different models.

[0047] The structure of D-type right-angle stacked heat exchange fins 401 is shown in Figure 5 : It is composed of several groups of D-shaped fins welded and assembled.

[0048] The structure of the H-shaped bent heat exchange fin 402 is shown in FIG. Figure 6 .

[0049] The structure of the I-type folded heat exchange fin 403 is shown in FIG. Figure 7 .

[0050] In a specific implementation, several groups of heat exchange fins 40 are sequentially arranged along the direction of the flow passage, namely, the first heat exchange fin, the second heat exchange fin, the third heat exchange fin, etc. In two adjacent groups of heat exchange fins, the lateral width of the heat exchange fins 40 located at the front section of the flow passage is 20% to 30% larger than the lateral width of the heat exchange fins 40 at the rear end of the flow section, which ensures that the flow rate of the coolant near the liquid inlet 11 is slow, while the flow rate of the coolant near the liquid outlet 12 is fast, so that the cooling amplitude of adjacent heat source concentrated areas is synchronous and reliable, and there will be no uneven cooling phenomenon with a large cooling amplitude near the liquid inlet 11 and a small cooling amplitude near the liquid outlet 12.

[0051] In specific implementation, the cavity formed by the outer baffle plate 22 and the bottom plate 21 is a structure with a wide front end cavity and a narrow rear end cavity. The inner partition plate 23 is arranged from front to back. The inner partition plate 23 reliably divides the front end width into two different flow channels. A flow opening 24 is left between the rear end of the inner partition plate 23 and the inner vertical plate of the outer baffle plate 22 at the corresponding position.

[0052] The inner partition plate 23 divides the front wide mouth body into a first wide mouth liquid inlet channel 25 and a second narrow mouth liquid outlet channel 26, and the inner partition plate 23 divides the rear narrow mouth body into a third narrow mouth transition channel 27 and a fourth wide mouth transition channel 28. The third narrow mouth transition channel 27 is connected to the fourth wide mouth transition channel 28 through the flow port 24. The transverse width of the first wide mouth liquid inlet channel 21 is greater than the transverse width of the fourth width transition channel 28. The transverse width of the fourth width transition channel 28 is greater than the transverse width of the second narrow mouth liquid outlet channel 26. The transverse width of the fourth width transition channel 28 is greater than the transverse width of the third narrow mouth transition channel 27.

[0053] The front wide cavity body is provided with liquid inlet and outlet ports on both sides corresponding to the inner partition plate 23. The liquid inlet and outlet port corresponding to the starting end of the first wide inlet flow channel 25 is the liquid inlet port 11, and the liquid inlet and outlet port corresponding to the end of the second narrow inlet flow channel 26 is the liquid outlet port 12.

[0054] The structure of the rear end narrow oral body is specifically formed by the middle and rear section of the outer baffle plate 22 being provided with a concave arc-shaped guide section 221 and a straight splicing end 222, and the inner partition plate 23 includes a first straight section 231, a second arc-shaped guide section 232, and a third straight section 233 from front to back, and the second arc-shaped guide section 232 is arranged to imitate the concave arc-shaped guide section 221. The arrangement of the concave arc-shaped guide section 221 and the second arc-shaped guide section 232 makes the flow of the coolant smooth and reliable.

[0055] Specific embodiment 1, see Figure 1When the vehicle domain controller is provided with three heat source concentration areas, the entire heat dissipation structure includes three groups of heat exchange fins. The three groups of heat exchange fins 40 are specifically the first heat exchange fins 41, the second heat exchange fins 42, and the third heat exchange fins 43. The surface areas of the first heat exchange fins 41, the second heat exchange fins 42, and the third heat exchange fins 43 cover the heat source concentration areas at corresponding positions. The first heat exchange fins 41 are located in the corresponding heat source concentration area of ​​the first wide-mouth inlet channel 25, the second heat exchange fins 42 are located in the corresponding heat source concentration area of ​​the fourth wide-mouth transition channel 28, and the third heat exchange fins 43 are located in the corresponding heat source concentration area of ​​the second narrow-mouth outlet channel 26. In this embodiment, the first heat exchange fins 41, the second heat exchange fins 42, and the third heat exchange fins 43 are all H-shaped bent heat exchange fins.

[0056] Specific embodiment 2, see Figure 2 When the vehicle domain controller is provided with two heat source concentration areas, the entire heat dissipation structure includes two groups of heat exchange fins 40, and the two groups of heat exchange fins 40 are specifically a first heat exchange fin 41 and a second heat exchange fin 42. The surface areas of the first heat exchange fin 41 and the second heat exchange fin 42 cover the heat source concentration areas at corresponding positions. The first heat exchange fin 41 is located in the corresponding heat source concentration area of ​​the first wide-mouth inlet channel 25, and the second heat exchange fin 42 is located in the corresponding heat source concentration area of ​​the fourth wide-mouth transition channel 28. In this embodiment, the first heat exchange fin 41 and the second heat exchange fin 42 are both D-type right-angle stacked heat exchange fins.

[0057] In a specific implementation, a pair of guide vanes 29 are provided at the position of the bottom plate 21 corresponding to the liquid inlet 11, and the two guide vanes 29 are arranged in an eight-shaped shape to guide the coolant to the rear flow channel;

[0058] The angled positions where the outer baffle plate 22 and the inner partition plate 23 are connected are all arc transitions, ensuring that the flow of the coolant is smooth and reliable.

[0059] In a specific embodiment, the assembly process is as follows: the upper cover plate 10, the flow channel cavity plate 20, several groups of heat exchange fins 40, the liquid inlet nozzle 50, and the liquid outlet nozzle 60 are made of AL3003 series materials. The surfaces of the upper cover plate 10, the flow channel cavity plate 20, several groups of heat exchange fins 40, the liquid inlet nozzle 50, and the liquid outlet nozzle 60 to be welded are sprayed with Flux flux. After positioning and assembly, they are high-temperature welded into an integrated finished product through a brazing furnace. Thereafter, the integrated finished product is assembled with the base 30 and welded into a finished product through a laser welding process.

[0060] In a specific embodiment, a plurality of convex support blocks 201 and support columns 202 are provided at the bottom of the flow channel cavity plate 20 to ensure that the flow channel cavity plate 20 and the central concave cavity area 31 are arranged at the same height after assembly, thereby saving manufacturing materials. The height and width of the central concave cavity area 31 are reasonably and reliably arranged according to the power consumption required for heat dissipation.

[0061] Its working principle is as follows: driven by an external pump, the coolant enters from the liquid inlet and passes through the heat exchange fins corresponding to several heat source concentration areas of the pre-controller in sequence along the flow channel. Since at least one section of the flow passage with a contracted flow direction is arranged between adjacent heat exchange fins along the flow direction of the coolant, the flow rate of the coolant near the liquid inlet is slow, while the flow rate of the coolant near the liquid outlet is fast, so that the cooling amplitude of adjacent heat source concentration areas is synchronized and reliable, and there will be no uneven cooling phenomenon with a large cooling amplitude near the liquid inlet and a small cooling amplitude near the liquid outlet; and since the arrangement of the heat dissipation fins is not the entire flow channel arrangement, but only arranged in the heat source concentration area, the production cost of the entire heat dissipation structure is relatively reduced, and the economy is improved.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water cooling plate heat dissipation structure for a new energy vehicle domain controller, characterized in that: It includes: An upper cover plate, which is arranged in the shape of a surface to be attached to the domain controller; A flow channel cavity plate, comprising a bottom plate, an outer baffle plate, and an inner partition plate, wherein an outer convex outer baffle plate is disposed on the periphery of the bottom plate, and an inner partition plate is disposed in a cavity formed by the outer baffle plate and the bottom plate, wherein the inner partition plate divides the cavity into a flow passage with a single flow direction and covers the entire cavity; A base, comprising a central concave cavity area, a peripheral mounting positioning mechanism, and a fixing hole; and a plurality of groups of heat exchange fins; The coolant passes through several heat source concentration areas of the pre-controller in sequence along the flow passage, a group of heat exchange fins is respectively arranged at the corresponding position of each heat source concentration area, and at least one flow passage with a constricted flow direction is arranged between adjacent heat exchange fins along the flow direction of the coolant, the surface area of ​​each group of heat exchange fins covers the heat source concentration area at the corresponding position, each group of heat exchange fins is fixed in the surface area of ​​the flow passage, the transverse surface area of ​​each group of heat exchange fins covers the width area of ​​the flow passage of the corresponding area, the bottom area of ​​each group of heat exchange fins fits the upper surface of the bottom plate, the top area of ​​each group of heat exchange fins fits the lower surface of the upper cover plate, the transverse end walls of each group of heat exchange fins fit the corresponding side elevations of the outer baffle plate and the inner partition plate, and the flow direction of the coolant in each group of heat exchange fins is set to be the same as the flow direction of the flow passage; The upper cover plate is provided with a liquid inlet corresponding to the starting end position of the flow passage, and the upper cover plate is provided with a liquid outlet corresponding to the end position of the flow passage; The flow channel cavity plate is fixed to the central concave cavity area of ​​the base, the upper cover plate is covered on the upper surface of the flow channel cavity plate, and the upper periphery of the upper cover plate is welded to the corresponding contour edge of the base.

2. According to claim 1, a water cooling plate heat dissipation structure of a new energy vehicle domain controller is characterized in that: Several groups of heat exchange fins are sequentially arranged along the flow path as the first heat exchange fin, the second heat exchange fin, the third heat exchange fin, ..., the Nth heat exchange fin, wherein N is a natural number greater than or equal to 2. In two adjacent groups of heat exchange fins, the lateral width of the heat exchange fins located at the front section of the flow path is 20% to 30% greater than the lateral width of the heat exchange fins at the rear end of the flow path.

3. According to claim 1, a water cooling plate heat dissipation structure of a new energy vehicle domain controller is characterized in that: Each group of heat exchange fins is any one of D-type right-angle stacked heat exchange fins, H-type bent heat exchange fins, and I-type folded heat exchange fins.

4. The water cooling plate heat dissipation structure of a new energy vehicle domain controller according to claim 3 is characterized in that: All heat exchange fins are of the same model.

5. The water cooling plate heat dissipation structure of a new energy vehicle domain controller according to claim 2 is characterized in that: All the heat exchange fins are of different models.

6. The water cooling plate heat dissipation structure of a new energy vehicle domain controller according to claim 1 is characterized in that: The cavity formed by the outer baffle plate and the bottom plate is a structure with a wide front end and a narrow rear end. The inner partition plate is arranged from front to back. The inner partition plate reliably divides the front end width into two different flow channels. A flow opening is left between the rear end of the inner partition plate and the inner vertical plate of the outer baffle plate at the corresponding position.

7. The water cooling plate heat dissipation structure of a new energy vehicle domain controller according to claim 6 is characterized in that: The inner partition plate divides the front wide mouth body into a first wide mouth liquid inlet channel and a second narrow mouth liquid outlet channel, and the inner partition plate divides the rear narrow mouth body into a third narrow mouth transition channel and a fourth wide mouth transition channel. The third narrow mouth transition channel is connected to the fourth wide mouth transition channel through a flow port. The lateral width of the first wide mouth liquid inlet channel is greater than the lateral width of the fourth width transition channel. The lateral width of the fourth width transition channel is greater than the lateral width of the second narrow mouth liquid outlet channel; the lateral width of the fourth width transition channel is greater than the lateral width of the third narrow mouth transition channel.

8. The water cooling plate heat dissipation structure of a new energy vehicle domain controller according to claim 7 is characterized in that: The front wide cavity body is provided with liquid inlets and outlets on both sides corresponding to the inner partition plate. The liquid inlet and outlet corresponding to the starting end of the first wide inlet flow channel is the liquid inlet, and the liquid inlet and outlet corresponding to the end of the second narrow inlet flow channel is the liquid outlet.

9. A water cooling plate heat dissipation structure for a new energy vehicle domain controller according to claim 8, characterized in that: The structure of the rear end narrow oral cavity is specifically formed by a combination of an inwardly concave arc-shaped guide section and a straight splicing end provided in the middle and rear section of the outer baffle plate, and the inner partition plate includes a first straight section, a second arc-shaped guide section, and a third straight section from front to back, and the second arc-shaped guide section is arranged to imitate the inwardly concave arc-shaped guide section.

10. The water cooling plate heat dissipation structure of a new energy vehicle domain controller according to claim 1, characterized in that: A pair of guide plates are arranged at positions of the bottom plate corresponding to the liquid inlet, and the two guide plates are arranged in an eight-shaped shape.

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