CN220274038U - Variable water channel structure of motor controller - Google Patents

Abstract

The utility model discloses a variable water channel structure of a motor controller, which comprises a motor controller shell (1), a plurality of water nozzle mounting openings (2) and a water cooling plate (3), wherein the water nozzle mounting openings (2) are arranged in the motor controller shell (1), a water channel cavity (1-1) is arranged in the motor controller shell (1), the outer side wall of the motor controller shell (1) is connected with the water nozzle mounting openings (2), the water nozzle mounting openings (2) are connected with the water channel cavity (1-1) but do not penetrate through the water channel cavity, and the water cooling plate (3) is fixed on the water channel cavity (1-1) in a sealing way; the utility model can realize water inlet at one side, water outlet at one side and water inlet and outlet at the same side or water inlet and outlet at a large flow rate according to the needs, thereby greatly improving the applicability of the motor controller, shortening the development period of products and reducing the development cost.

Description

Variable water channel structure of motor controller

Technical Field

The utility model belongs to the technical field of automobile motors, and particularly relates to a variable water channel structure of a motor controller.

Background

With the development of new energy automobiles, the development period of new energy automobile products is shorter and shorter, and the development period of parts matched with the new energy automobiles, such as a motor controller, is also gradually shortened. In the development period of the motor controller, structural member design, mold opening and experiments occupy the development period and the development cost, and as software and hardware platforms of various motor controller manufacturers are mature, software and hardware in the newly developed motor controller only need to be properly adjusted according to customer requirements, so that the development of the motor controller is gradually represented as structural member development, and in structural member development, the design, simulation and verification of a water channel are the most important rings.

At present, a new energy automobile motor controller (short for electric control) has large heat dissipation requirement for a power module (mainly comprising an IGBT), so that a water cooling scheme is adopted, namely, a water channel and a corresponding heat dissipation structure (such as heat dissipation ribs and heat dissipation fins) are designed below the power module of the motor controller. At present, when the motor controller shell is designed, a water inlet and a water outlet of a motor controller are determined only according to the needs of a customer, the water channel of the motor controller is determined according to the arrangement of power devices (IGBT (insulated gate bipolar transistor) in the controller, the whole vehicle cooling water enters the electric control controller shell through the water inlet, a water channel cavity is formed by a water channel cover plate and the electric control controller shell in an assembling or welding mode, radiating fins are generally designed on the motor controller shell and used for increasing the radiating area and guiding flow, the IGBT module of the motor controller shell is assembled and attached to the water channel of the motor controller through the motor controller shell, heat generated by the operation of the IGBT module is transferred to the motor controller shell and the radiating fins on the motor controller shell, the heat is further transferred to cooling liquid flowing in through the water inlet, and finally the cooling liquid takes away the heat through the water outlet. Once the controller is designed and set, it needs to be redesigned, verified, opened, etc. if there are other needs, such as changing the nozzle position, or increasing the heat dissipation capacity of the water channel.

After design is finalized, the motor water inlet and outlet also solidifies and can not be adjusted, and subsequently if the motor controller is adapted to other vehicle types, the water inlet position is possibly unsuitable, so that the motor controller needs to be redeveloped, or the motor controller is adjusted through an external special-shaped pipeline and the like, the two modes either lead to the redeveloped cost to be high, the development period to be long, the product applicability to be reduced, and meanwhile, the problems of messy arrangement and water resistance increase caused by the newly-added switching pipeline of the whole vehicle also exist.

The motor controller can realize different powers by changing different IGBTs, but the heat generated by the different IGBTs during operation is not completely the same, so the requirements on the heat dissipation capacity of the water channel are not the same. If the heat dissipation capacity of the motor controller is to be improved, only the material of the motor controller shell (the heat dissipation capacity of the motor controller water channel is only related to the shell material of the IGBT fitting part and the structure of the water channel) can be replaced, and the heat dissipation capacity of the motor controller can be improved by replacing the material with better heat conduction capacity. However, the material of the whole motor controller shell needs to be replaced, and the material with better heat conduction capability tends to be higher in cost, so that the material cost of the controller is greatly increased; and because the requirements of different kinds of materials on the die are not completely the same, the kinds of replaceable materials are limited, and therefore, the research on a novel water channel structure of the motor controller is necessary.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a variable water channel structure of a motor controller.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a variable water course structure of motor controller, includes motor controller casing, water injection well choke installing port and water-cooling board, water injection well choke installing port is a plurality of, be provided with the water course cavity in the motor controller casing, motor controller casing lateral wall connects a plurality of water injection well choke installing ports, and a plurality of water injection well choke installing ports are connected but do not run through with the water course cavity, the water-cooling board is sealed to be fixed on the water course cavity.

Preferably, a water channel sealing ring is arranged on the inner side of the upper edge of the water channel cavity, a plurality of screw holes are formed in the edge of the water cooling plate, a plurality of water cooling plate fixing countersunk screws penetrate through the screw holes and are in threaded connection with the outer side of the upper edge of the water channel cavity respectively, the water channel sealing ring is tightly pressed, the water cooling plate and the water channel cavity are fixed in a sealing mode, and a power device IGBT is attached to one end face, far away from the water channel cavity, of the water cooling plate.

Preferably, two or more of the left outer side wall, the right outer side wall, the front outer side wall and the rear outer side wall of the motor controller shell are provided with water nozzle mounting openings, and when the motor controller is mounted and determines water inlet and outlet openings, the water channel cavity and the water nozzle mounting openings of the corresponding side walls penetrate through.

Preferably, the left outer side wall of the motor controller shell is provided with two water nozzle mounting openings, namely a first water nozzle mounting opening and a second water nozzle mounting opening, the right outer side wall of the motor controller shell is provided with two water nozzle mounting openings, namely a third water nozzle mounting opening and a fourth water nozzle mounting opening, respectively, and the connecting parts of the first water nozzle mounting opening, the second water nozzle mounting opening, the third water nozzle mounting opening and the fourth water nozzle mounting opening and the water channel cavity consist of a through section and a sealing section, and the sealing section is close to the inner cavity of the water channel cavity.

Preferably, when the motor controller needs water inlet on one side and water outlet on one side, the first water nozzle mounting opening or the second water nozzle mounting opening is used as a water inlet, the third water nozzle mounting opening or the fourth water nozzle mounting opening is used as a water outlet, and the sealing section of the first water nozzle mounting opening or the second water nozzle mounting opening, the third water nozzle mounting opening or the fourth water nozzle mounting opening is penetrated by machining.

Preferably, when the motor controller needs water inlet on one side and water outlet on one side, the first water nozzle mounting opening or the second water nozzle mounting opening is used as a water outlet, the third water nozzle mounting opening or the fourth water nozzle mounting opening is used as a water inlet, and the sealing section of the first water nozzle mounting opening or the second water nozzle mounting opening, the third water nozzle mounting opening or the fourth water nozzle mounting opening is penetrated by machining.

Preferably, when the motor controller needs water inflow on one side of a large flow rate and water outflow on the other side, the first water nozzle mounting opening and the second water nozzle mounting opening are used as water inlets, and the third water nozzle mounting opening and the fourth water nozzle mounting opening are used as water outlets; or the first water nozzle mounting opening and the second water nozzle mounting opening are used as water outlets, and the third water nozzle mounting opening and the fourth water nozzle mounting opening are used as water inlets; and the sealing sections of the first water nozzle mounting opening, the second water nozzle mounting opening, the third water nozzle mounting opening and the fourth water nozzle mounting opening are penetrated by machining.

Preferably, when the motor controller needs to enter and exit from the same side, the first water nozzle mounting opening is used as a water inlet, and the second water nozzle mounting opening is used as a water outlet; or the first water nozzle mounting opening is used as a water outlet, and the second water nozzle mounting opening is used as a water inlet; and penetrating the sealing sections of the first water nozzle mounting opening and the second water nozzle mounting opening by machining.

Preferably, when the motor controller needs to enter and exit from the same side, the third water nozzle mounting port is used as a water inlet, and the fourth water nozzle mounting port is used as a water outlet; or the third water nozzle mounting opening is used as a water outlet, and the fourth water nozzle mounting opening is used as a water inlet; and penetrating the sealing sections of the third water nozzle mounting opening and the fourth water nozzle mounting opening by machining.

Preferably, a radiating fin is arranged on one end face, close to the water channel cavity, of the water cooling plate, the radiating fin consists of a guide plate and a baffle, and a plurality of guide plates and baffles form a tooth-shaped radiating runner, a U-shaped radiating runner or a parallel radiating runner; the flow guiding port at one end of the tooth-shaped heat dissipation flow channel is close to the water inlet, and the flow guiding port at the other end of the tooth-shaped heat dissipation flow channel is close to the water outlet; two ends of the opening of the U-shaped heat dissipation runner are respectively close to the water inlet and the water outlet; two sides of one end of the parallel heat dissipation flow channel are respectively close to the two water inlets, and two sides of the other end of the parallel heat dissipation flow channel are respectively close to the two water outlets.

Compared with the prior art, the utility model has the advantages that:

(1) According to the utility model, the water channel of the motor controller is designed into a variable water channel, so that water inlet at one side, water outlet at the same side, water inlet and water outlet at the same side or water inlet and outlet at a large flow rate can be realized as required, the applicability of the motor controller is greatly improved, the development period of products is shortened, and the development cost is reduced;

(2) The variable water channel can realize variable heat radiation capability, when the heat radiation requirement is small, a water inlet and a water outlet are machined, and when the heat radiation requirement is large, two water inlets and two water outlets are machined, so that the applicability of the motor controller is improved, and the requirements of various water inlet and outlet and heat radiation capability of the motor controller are realized;

(3) When the motor controller is installed and the water inlet and outlet are determined, the water channel cavity corresponding to the side wall and the water nozzle installation opening are penetrated, the installation position is flexible, and the problems of messy arrangement and increased water resistance caused by a newly added switching pipeline of the whole vehicle are avoided.

Drawings

FIG. 1 is an exploded view of a variable waterway structure of a motor controller in accordance with the present utility model;

FIG. 2 is a schematic perspective view of a variable water channel structure of a motor controller according to the present utility model;

FIG. 3 is a schematic perspective view of a variable water channel structure of a motor controller according to the present utility model;

FIG. 4 is a top partial cross-sectional view of a variable waterway structure of a motor controller in accordance with the present utility model;

FIG. 5 is a schematic view of a water cooling plate structure of a variable water channel structure of a motor controller according to the present utility model;

fig. 6 is a schematic diagram of a water cooling plate structure of a variable water channel structure of a motor controller according to the present utility model.

Reference numerals illustrate:

1. the motor controller comprises a motor controller shell, a water nozzle mounting opening, a water cooling plate, a water channel sealing ring, a countersunk screw, a power device IGBT and a power device IGBT, wherein the countersunk screw is fixed on the water cooling plate;

1-1, a water channel cavity;

1-1-1 parts of through sections, 1-1-2 parts of sealing sections;

2-1, a first water nozzle mounting port, 2-2, a second water nozzle mounting port, 2-3, a third water nozzle mounting port, 2-4 and a fourth water nozzle mounting port;

3-1, screw holes, 3-2, radiating fins;

3-2-1 parts of guide plates, 3-2-2 parts of baffle plates.

Detailed Description

The following describes specific embodiments of the present utility model with reference to examples:

it should be noted that the structures, proportions, sizes and the like illustrated in the present specification are used for being understood and read by those skilled in the art in combination with the disclosure of the present utility model, and are not intended to limit the applicable limitations of the present utility model, and any structural modifications, proportional changes or size adjustments should still fall within the scope of the disclosure of the present utility model without affecting the efficacy and achievement of the present utility model.

Furthermore, the drawings are merely schematic illustrations of embodiments of the utility model and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

Example 1

As shown in fig. 1-4, the utility model discloses a variable water channel structure of a motor controller, which comprises a motor controller shell 1, a plurality of water nozzle mounting openings 2 and a water cooling plate 3, wherein the water nozzle mounting openings 2 are arranged in the motor controller shell 1, a water channel cavity 1-1 is arranged in the motor controller shell 1, the outer side wall of the motor controller shell 1 is connected with the water nozzle mounting openings 2, the water nozzle mounting openings 2 are connected with the water channel cavity 1-1 but do not penetrate through the water channel cavity 1, and the water cooling plate 3 is fixed on the water channel cavity 1-1 in a sealing way.

Example 2

As shown in fig. 1, preferably, a water channel sealing ring 4 is disposed on the inner side of the upper edge of the water channel cavity 1-1, a plurality of screw holes 3-1 are formed on the edge of the water cooling plate 3, a plurality of water cooling plate fixing countersunk screws 5 respectively penetrate through the plurality of screw holes 3-1 to be in threaded connection with the outer side of the upper edge of the water channel cavity 1-1, the water channel sealing ring 4 is pressed tightly, the water cooling plate 3 and the water channel cavity 1-1 are fixed in a sealing manner, and a power device IGBT6 is attached to one end face, far away from the water channel cavity 1-1, of the water cooling plate 3.

The water cooling plate 3 can be matched with different water cooling plate materials according to different heat dissipation requirements, the water cooling plate made of ADC12 materials can be generally used for the heat dissipation capability requirements, and 1070A, 6061Al, 44300 and other materials can be used for the high heat dissipation requirements, and even the water cooling plate made of copper materials can be replaced.

The water cooling plate 3 can be fixedly sealed with the water channel cavity 1-1 by welding to the motor control housing 1.

Example 3

As shown in fig. 2 to 4, preferably, two or more of the left outer sidewall, the right outer sidewall, the front outer sidewall and the rear outer sidewall of the motor controller housing 1 are provided with water nozzle mounting openings 2, and when the motor controller is mounted and determines water inlet and outlet openings, the water channel cavity 1-1 and the water nozzle mounting openings 2 corresponding to the sidewalls penetrate.

The water nozzle mounting ports 2 arranged at a plurality of positions of the motor controller are in a non-penetrating state, which two water nozzle mounting ports 2 need to be mechanically penetrated is determined according to the requirement, or the water nozzle mounting ports 2 at a plurality of positions are in a penetrating state, and the water nozzle mounting ports 2 which do not need to be penetrated are plugged by using sealing plugs according to the requirement.

As shown in fig. 2 and 3, preferably, the left outer side wall of the motor controller housing 1 is provided with two water nozzle mounting ports 2, namely a first water nozzle mounting port 2-1 and a second water nozzle mounting port 2-2, the right outer side wall of the motor controller housing 1 is provided with two water nozzle mounting ports 2, namely a third water nozzle mounting port 2-3 and a fourth water nozzle mounting port 2-4, respectively, and the connection parts of the first water nozzle mounting port 2-1, the second water nozzle mounting port 2-2, the third water nozzle mounting port 2-3 and the fourth water nozzle mounting port 2-4 and the water channel cavity 1-1 are composed of a through section 1-1-1 and a sealing section 1-1-2, and the sealing section 1-1-2 is close to the inner cavity of the water channel cavity 1-1.

The utility model is illustrated by reserving 4 water nozzle mounting openings 2 on the two sides of the motor controller shell 1 in total, and 6 water nozzle mounting openings 2 and the like can be reserved on the 3 sides of the motor controller shell 1.

According to the utility model, the water nozzle mounting ports 2 are designed on the side wall of the motor controller shell 1, the water channel cavity 1-1 is designed in the motor controller shell 1, the water cooling plate 3 is fixed on the water channel cavity 1-1 of the motor controller shell 1 through the water channel sealing ring 4 and the water cooling plate fixing countersunk screws 5 to form a closed water channel, the power device IGBT6 (described as taking 6 IGBT as an example here) of the motor controller is assembled through screws and then is attached to the water cooling plate 3, and heat generated by the power device IGBT is transferred to cooling liquid through the water cooling plate 3, so that heat dissipation of the IGBT is realized.

Example 4

As shown in fig. 2 to 4, preferably, when the motor controller needs water inlet on one side and water outlet on the other side, the first water nozzle mounting opening 2-1 or the second water nozzle mounting opening 2-2 is used as a water inlet, the third water nozzle mounting opening 2-3 or the fourth water nozzle mounting opening 2-4 is used as a water outlet, and the sealing section 1-1-2 of the first water nozzle mounting opening 2-1 or the second water nozzle mounting opening 2-2, the third water nozzle mounting opening 2-3 or the fourth water nozzle mounting opening 2-4 is penetrated by machining.

As shown in fig. 2 to 4, preferably, when the motor controller needs water inlet on one side and water outlet on the other side, the first water nozzle mounting opening 2-1 or the second water nozzle mounting opening 2-2 is used as a water outlet, the third water nozzle mounting opening 2-3 or the fourth water nozzle mounting opening 2-4 is used as a water inlet, and the sealing section 1-1-2 of the first water nozzle mounting opening 2-1 or the second water nozzle mounting opening 2-2, the third water nozzle mounting opening 2-3 or the fourth water nozzle mounting opening 2-4 is penetrated by machining.

As shown in fig. 4, in order to realize the variation of the water inlet and outlet, the motor controller housing 1 is designed and opened, and the water nozzle mounting ports 2 are not penetrated all around. Once the water inlet and the water outlet are determined, for example, the water inlet and the water outlet of 2-2 are determined to be 2-4 (the water inlet and the water outlet are on different sides), the second water nozzle mounting port 2-2 and the fourth water nozzle mounting port 2-4 are penetrated in a machining mode and matched with the water cooling plate 3 with the tooth-shaped heat dissipation flow channel, and heat dissipation of 6 IGBTs and flow diversion of cooling liquid can be realized. In addition, because the water channel is bilaterally symmetrical, the water channel can also enter 2-2 to go out (namely, water inlets and water outlets do not need to be distinguished), and the water outlets 2-1 can enter 2-3 to go out or 2-3 can enter 2-1 to go out only by rotating the water cooling plate 3 with the tooth-shaped heat dissipation flow channel by 180 degrees and penetrating the first water nozzle mounting opening 2-1 and the third water nozzle mounting opening 2-3, and the second water nozzle mounting opening 2-2 and the fourth water nozzle mounting opening 2-4 do not penetrate.

The above description has been given by taking 6 IGBT modules as an example, 3 or other numbers of IGBT modules may be used, and the power module is not limited to the IGBT, and may be a SiC module or the like.

Example 5

As shown in fig. 2-4, preferably, when the motor controller needs water inflow from one side with high flow rate and water outflow from the other side, the first water nozzle mounting opening 2-1 and the second water nozzle mounting opening 2-2 are used as water inlets, and the third water nozzle mounting opening 2-3 and the fourth water nozzle mounting opening 2-4 are used as water outlets; or the first water nozzle mounting opening 2-1 and the second water nozzle mounting opening 2-2 are used as water outlets, and the third water nozzle mounting opening 2-3 and the fourth water nozzle mounting opening 2-4 are used as water inlets; the sealing sections 1-1-2 of the first water nozzle mounting port 2-1, the second water nozzle mounting port 2-2, the third water nozzle mounting port 2-3 and the fourth water nozzle mounting port 2-4 are penetrated by machining.

As shown in fig. 2 to 4, preferably, when the motor controller needs to enter and exit from the same side, the third water nozzle mounting opening 2-3 is used as a water inlet, and the fourth water nozzle mounting opening 2-4 is used as a water outlet; or the third water nozzle mounting port 2-3 is used as a water outlet, and the fourth water nozzle mounting port 2-4 is used as a water inlet; the sealing sections 1-1-2 of the third water nozzle mounting port 2-3 and the fourth water nozzle mounting port 2-4 are penetrated by machining.

As shown in fig. 2 to 4, preferably, when the water inlet and the water outlet are on the same side, only the first water nozzle mounting opening 2-1 and the second water nozzle mounting opening 2-2 are required to penetrate, the third water nozzle mounting opening 2-3 and the fourth water nozzle mounting opening 2-4 are not required to penetrate, and the water flow 2-2 inlet and 2-1 outlet can be realized by using the water cooling plate 3 with the U-shaped heat dissipation flow channel. Similarly, the water channel is of a symmetrical structure, so that water inlets and water outlets do not need to be distinguished. The third water nozzle mounting opening 2-3 and the fourth water nozzle mounting opening 2-4 are similar, and the water flow can be 2-3 in 2-4 out or 2-4 in 2-3 out only by rotating the water cooling plate 3 with the U-shaped heat dissipation flow channel by 180 degrees.

Example 6

As shown in fig. 5 and 6, preferably, a cooling fin 3-2 is disposed on one end surface of the water cooling plate 3 near the water channel cavity 1-1, the cooling fin 3-2 is composed of a guide plate 3-2-1 and a baffle plate 3-2-2, and a plurality of guide plates 3-2-1 and baffle plates 3-2-2 form a tooth-shaped cooling flow channel, a U-shaped cooling flow channel or a parallel cooling flow channel; the flow guiding port at one end of the tooth-shaped heat dissipation flow channel is close to the water inlet, and the flow guiding port at the other end of the tooth-shaped heat dissipation flow channel is close to the water outlet; two ends of the opening of the U-shaped heat dissipation runner are respectively close to the water inlet and the water outlet; two sides of one end of the parallel heat dissipation flow channel are respectively close to the two water inlets, and two sides of the other end of the parallel heat dissipation flow channel are respectively close to the two water outlets.

The distance and the size of the guide plates 3-2-1 also influence the heat dissipation capacity, and different requirements can be met by designing different heat dissipation fin structures.

If the material of the water cooling plate 3 is not required to be replaced, the radiating fins 3-2 can be designed in the water channel cavity 1-1 of the motor controller shell 1, only different sliding blocks are designed on the die of the motor controller shell 1, different water channel fin structures can be realized by replacing the sliding blocks of the die, and the combination of a plurality of water inlets and a plurality of water outlets can be realized by combining a plurality of water outlet schemes of the utility model.

The utility model describes a method for realizing various arrangement and combination of water inlets of a motor by an example, a detailed water inlet structure (penetrated by a subsequent machining mode) of a motor controller, and a pattern and a structure of a water cooling plate.

The working process of the utility model is as follows:

as shown in fig. 1-4, the utility model discloses a variable water channel structure of a motor controller, which comprises a motor controller shell 1, a water nozzle mounting opening 2 and a water cooling plate 3, wherein the water cooling plate 3 is assembled with a water channel cavity 1-1 of the motor controller shell 1 through a water channel sealing ring 4 and a water cooling plate fixing countersunk screw 5 to form a complete water channel, the side wall of the motor controller shell 1 is connected with a plurality of water nozzle mounting openings 2, the water channel cavity 1-1 of the water nozzle mounting opening 2 is connected but not penetrated, and when the motor controller is designed and opened, the water nozzle mounting openings 2 are in a non-penetrating state, and after the motor controller is mounted and determines a water inlet and outlet, the water channel cavity 1-1 and the water nozzle mounting opening 2 corresponding to the side wall are penetrated to form a penetrating state, so that the variable water channel and the variable heat dissipation capacity design of the motor controller are realized.

The utility model not only has changeable water inlet and outlet, but also realizes adjustable water channel heat dissipation capacity by changing the material of the water cooling plate and the detailed structure of the heat dissipation fins.

According to the utility model, the water channel of the motor controller is designed into a variable water channel, so that water inlet at one side, water outlet at the same side, water inlet and water outlet at the same side or water inlet and outlet at a large flow rate can be realized as required, the applicability of the motor controller is greatly improved, the product development period is shortened, and the development cost is reduced.

The variable water channel can realize variable heat radiation capability, when the heat radiation requirement is small, one water inlet and one water outlet are machined, and when the heat radiation requirement is large, two water inlets and two water outlets are machined, so that the applicability of the motor controller is improved, and the requirements of various water inlet and outlet and heat radiation capability of the motor controller are realized.

When the motor controller is installed and the water inlet and outlet are determined, the water channel cavity corresponding to the side wall and the water nozzle installation opening are penetrated, the installation position is flexible, and the problems of messy arrangement and increased water resistance caused by a newly added switching pipeline of the whole vehicle are avoided.

While the preferred embodiments of the present utility model have been described in detail, the present utility model is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present utility model within the knowledge of those skilled in the art.

Many other changes and modifications may be made without departing from the spirit and scope of the utility model. It is to be understood that the utility model is not to be limited to the specific embodiments, but only by the scope of the appended claims.

Claims (10)

1. A variable water channel structure of motor controller, its characterized in that: including motor controller casing (1), water injection well choke installing port (2) and water-cooling board (3), water injection well choke installing port (2) are a plurality of, be provided with water course cavity (1-1) in motor controller casing (1), motor controller casing (1) lateral wall connect a plurality of water injection well choke installing port (2), a plurality of water injection well choke installing port (2) are connected but do not run through with water course cavity (1-1), water-cooling board (3) seal fix on water course cavity (1-1).

2. A variable waterway structure of a motor controller according to claim 1, wherein: the novel water-cooling device is characterized in that a water-cooling sealing ring (4) is arranged on the inner side of the upper edge of the water-cooling cavity (1-1), a plurality of screw holes (3-1) are formed in the edge of the water-cooling plate (3), a plurality of water-cooling plate fixing countersunk screws (5) penetrate through the screw holes (3-1) and are in threaded connection with the outer side of the upper edge of the water-cooling cavity (1-1) respectively, the water-cooling sealing ring (4) is pressed tightly, the water-cooling plate (3) and the water-cooling cavity (1-1) are fixed in a sealing mode, and a power device IGBT (6) is attached to one end face, far away from the water-cooling plate (3), of the water-cooling plate (1-1).

3. A variable waterway structure of a motor controller according to claim 1, wherein: two or more of the left outer side wall, the right outer side wall, the front outer side wall and the rear outer side wall of the motor controller shell (1) are provided with water nozzle mounting openings (2), and after the motor controller is mounted and a water inlet and a water outlet are determined, the water channel cavity (1-1) corresponding to the side walls and the water nozzle mounting openings (2) penetrate.

4. A variable waterway structure of a motor controller according to claim 3, wherein: the motor controller is characterized in that two water nozzle mounting openings (2) are formed in the left outer side wall of the motor controller shell (1), namely a first water nozzle mounting opening (2-1) and a second water nozzle mounting opening (2-2), two water nozzle mounting openings (2) are formed in the right outer side wall of the motor controller shell (1), namely a third water nozzle mounting opening (2-3) and a fourth water nozzle mounting opening (2-4), the first water nozzle mounting opening (2-1), the second water nozzle mounting opening (2-2), the connecting parts of the third water nozzle mounting opening (2-3) and the fourth water nozzle mounting opening (2-4) and the water channel cavity (1-1) are formed by a through section (1-1-1) and a sealing section (1-1-2), and the sealing section (1-1-2) is close to the inner cavity of the water channel cavity (1-1).

5. A variable waterway structure of a motor controller according to claim 4, wherein: when the motor controller needs water inlet on one side and water outlet on the other side, the first water nozzle mounting opening (2-1) or the second water nozzle mounting opening (2-2) is used as a water inlet, the third water nozzle mounting opening (2-3) or the fourth water nozzle mounting opening (2-4) is used as a water outlet, and the sealing section (1-1-2) of the first water nozzle mounting opening (2-1) or the second water nozzle mounting opening (2-2), the third water nozzle mounting opening (2-3) or the fourth water nozzle mounting opening (2-4) is penetrated by machining.

6. A variable waterway structure of a motor controller according to claim 4, wherein: when the motor controller needs water from one water inlet side, the first water nozzle mounting opening (2-1) or the second water nozzle mounting opening (2-2) is used as a water outlet, the third water nozzle mounting opening (2-3) or the fourth water nozzle mounting opening (2-4) is used as a water inlet, and the sealing section (1-1-2) of the first water nozzle mounting opening (2-1) or the second water nozzle mounting opening (2-2), the third water nozzle mounting opening (2-3) or the fourth water nozzle mounting opening (2-4) is penetrated by machining.

7. A variable waterway structure of a motor controller according to claim 4, wherein: when the motor controller needs water inflow on one side of a large flow and water outflow on one side, the first water nozzle mounting opening (2-1) and the second water nozzle mounting opening (2-2) are used as water inlets, and the third water nozzle mounting opening (2-3) and the fourth water nozzle mounting opening (2-4) are used as water outlets; or the first water nozzle mounting opening (2-1) and the second water nozzle mounting opening (2-2) are used as water outlets, and the third water nozzle mounting opening (2-3) and the fourth water nozzle mounting opening (2-4) are used as water inlets; and the sealing sections (1-1-2) of the first water nozzle mounting opening (2-1), the second water nozzle mounting opening (2-2), the third water nozzle mounting opening (2-3) and the fourth water nozzle mounting opening (2-4) are penetrated by machining.

8. A variable waterway structure of a motor controller according to claim 4, wherein: when the motor controller needs to enter and exit from the same side, the first water nozzle mounting opening (2-1) is used as a water inlet, and the second water nozzle mounting opening (2-2) is used as a water outlet; or the first water nozzle mounting opening (2-1) is used as a water outlet, and the second water nozzle mounting opening (2-2) is used as a water inlet; the sealing sections (1-1-2) of the first water nozzle mounting opening (2-1) and the second water nozzle mounting opening (2-2) are penetrated by machining.

9. A variable waterway structure of a motor controller according to claim 4, wherein: when the motor controller needs to enter and exit from the same side, the third water nozzle mounting opening (2-3) is used as a water inlet, and the fourth water nozzle mounting opening (2-4) is used as a water outlet; or the third water nozzle mounting opening (2-3) is used as a water outlet, and the fourth water nozzle mounting opening (2-4) is used as a water inlet; and penetrating the sealing sections (1-1-2) of the third water nozzle mounting opening (2-3) and the fourth water nozzle mounting opening (2-4) by machining.

10. The variable water channel structure of a motor controller according to any one of claims 6 to 9, wherein: a radiating fin (3-2) is arranged on one end face, close to the water channel cavity (1-1), of the water cooling plate (3), the radiating fin (3-2) is composed of a guide plate (3-2-1) and a baffle plate (3-2-2), and a plurality of guide plates (3-2-1) and the baffle plate (3-2-2) form a tooth-shaped radiating runner, a U-shaped radiating runner or a parallel radiating runner; the flow guiding port at one end of the tooth-shaped heat dissipation flow channel is close to the water inlet, and the flow guiding port at the other end of the tooth-shaped heat dissipation flow channel is close to the water outlet; two ends of the opening of the U-shaped heat dissipation runner are respectively close to the water inlet and the water outlet; two sides of one end of the parallel heat dissipation flow channel are respectively close to the two water inlets, and two sides of the other end of the parallel heat dissipation flow channel are respectively close to the two water outlets.