A bracket for an electric vehicle motor controller

Abstract

The present invention relates to a bracket, specifically, a bracket for an electric vehicle motor controller. It includes a controller body and a bracket body. The controller body includes a housing. A floating block is fixedly connected to the bottom of the housing. The floating block is a flexible structure. A plurality of through holes are formed through the top of the floating block. The bracket body includes a bottom case. The bottom case is arranged at the bottom of the housing. The side wall of the floating block is attached to the inner wall of the bottom case. In this bracket for the electric vehicle motor controller, during the vibration or shaking of the vehicle, the bottom case drives the liquid in the liquid storage cavity to shake, causing the floating block to enter the liquid, extending the acting force received by the housing, reducing the vibration and shaking of the partition board, and thus protecting the electronic components in the housing.

Description

Technical Field

[0001] The present invention relates to a bracket, and more particularly to a bracket for an electric vehicle motor controller. Background Art

[0002] In recent years, due to various considerations such as energy and environmental protection, China has actively promoted the development of new energy vehicles. Among the technical routes of various new energy vehicles, electric vehicles represented by hybrid and pure electric vehicles are generally regarded as the main direction of the future automotive energy power system, and have become the development focus of major automotive manufacturers.

[0003] In an electric vehicle, the motor controller is a key component that realizes the conversion of the direct current power supply of the battery to the alternating current power consumption of the motor and realizes the driving operation of the motor. It belongs to the core power component of the electric vehicle. R & D personnel have been pursuing the safety and reliability of the motor controller, and it can operate stably for a long time without failure.

[0004] The motor controller is fixedly installed on the vehicle frame in the front engine compartment through a bracket. However, during the driving process of the vehicle, the vibration generated by the vehicle will be transmitted to the motor controller through the bracket, which easily causes the electronic components in the motor controller to fall off and be damaged. Summary of the Invention

[0005] The purpose of the present invention is to provide a bracket for an electric vehicle motor controller to solve the problems raised in the above background art.

[0006] To achieve the above object, there is provided a bracket for an electric vehicle motor controller, including a controller body and a bracket body. The controller body includes a housing, and a floating block is fixedly connected to the bottom of the housing. The floating block is a flexible structure, and a plurality of through holes are formed through the top of the floating block. The bracket body includes a bottom case, the bottom case is disposed at the bottom of the housing, the side wall of the floating block is attached to the inner wall of the bottom case, and the top of the bottom case is connected to the side wall of the housing through a connecting member. The connecting member is a flexible and sealed structure. A liquid storage cavity is formed between the inside of the bottom case and the bottom of the housing, and a liquid is provided in the liquid storage cavity. The bottom case drives the floating block to move during the shaking process, so that the floating block enters the liquid.

[0007] As a further improvement of the technical solution, the floating block is an airbag.

[0008] As a further improvement of the technical solution, a plurality of flow deflectors are longitudinally slidably disposed on the inner wall of the bottom case, and the flow deflectors float in the liquid in the bottom case.

[0009] As a further improvement of this technical solution, a wind guide plate is fixedly arranged on the side wall of the housing. The wind guide plate is inclined. The wind guide plate acts on the housing with the impact force of the wind, causing the housing to rotate. Installation grooves are formed on the opposite sides of the top of the floating block. A turntable is rotatably arranged in the installation groove. A straight rod longitudinally penetrates through the turntable. The bottom end of the straight rod is fixedly arranged in the bottom case. A partition is fixedly connected in the housing. An infusion cavity for reducing the temperature in the housing is formed in the partition. The end parts of the infusion cavity are respectively communicated with a water inlet pipe and a drain pipe. A shunt pipe is connected to the side wall of the water inlet pipe. One end of the shunt pipe is communicated with the drain pipe. A control member is arranged in the water inlet pipe. When the housing is inclined, the control member blocks the liquid in the infusion cavity, so that the liquid in the water inlet pipe flows into the shunt pipe.

[0010] As a further improvement of this technical solution, the control member includes a ball valve rotatably arranged in the water inlet pipe. A convex rod is fixedly arranged on the outer wall of the ball valve. The convex rod penetrates through the bottom of the water inlet pipe and is rotatably connected with the water inlet pipe. A driving rod is threadedly connected in the convex rod. A spiral groove is arranged on the outer wall of the driving rod. The bottom end of the driving rod is rotatably connected with a connecting rod. The bottom end of the connecting rod is rotatably connected to the side wall of the bottom case.

[0011] As a further improvement of this technical solution, two spiral grooves are arranged on the outer wall of the driving rod. The two spiral grooves are respectively arranged at both ends of the driving rod. The two spiral grooves are of a symmetrical structure.

[0012] As a further improvement of this technical solution, a plurality of connecting pipes are fixedly arranged on the bottom inner wall of the bottom case. Both ends of the connecting pipe penetrate through the bottom case.

[0013] As a further improvement of this technical solution, a cooling cavity is formed between the bottom of the partition and the inside of the housing. A water pump is arranged in the liquid storage cavity. An input shaft is arranged in the water pump. The input shaft of the water pump penetrates through the side wall of the bottom case and is rotatably connected with the bottom case. An impeller is fixedly connected to the end of the input shaft of the water pump. The drain port of the water pump is communicated with a liquid discharge pipe. One end of the liquid discharge pipe is communicated with the cooling cavity. An overflow port is arranged on the side wall of the housing at the position of the cooling cavity.

[0014] As a further improvement of this technical solution, an exhaust duct is arranged in the floating block. Both ends of the exhaust duct penetrate through the top of the floating block. One end of the exhaust duct is fixedly arranged on the top of the bottom case. Liquid injection ports are arranged at the top of one end of the exhaust duct and the top of the floating block. The two liquid injection ports are communicated with each other. The other end of the exhaust duct penetrates through the cooling cavity. And leakage grooves are arranged at the bottom of the part of the exhaust duct located in the cooling cavity.

[0015] As a further improvement of this technical solution, the end of the exhaust duct penetrating through the cooling cavity is bent upward.

[0016] Advantages of the present invention compared with the prior art:

[0017] 1. In the bracket of the electric vehicle motor controller, during the vibration or shaking of the vehicle, the liquid in the liquid storage cavity is driven to shake by the bottom shell, causing the floating block to enter the liquid, extending the acting force received by the housing, reducing the vibration and shaking of the partition plate, and thus protecting the electronic components in the housing.

[0018] 2. In the bracket of the electric vehicle motor controller, during the movement of the vehicle, the impact force generated between the vehicle and the wind acts on the inclined surface of the air guide plate, causing the air guide plate to bear a large weight, forcing the floating block to rotate through the turntable. After rotation, the distance between the housing and the bottom shell increases, enabling the control member to block the liquid infusion cavity, so that the high-speed moving vehicle can cool the housing through the external wind.

[0019] 3. In the bracket of the electric vehicle motor controller, the wind is blown into one end of the exhaust duct and then blown out from the other end. During this process, the liquid in the exhaust duct is blown towards the other end of the exhaust duct. When the liquid passes through the cooling cavity, it drips into the cooling cavity through the leakage grooves to achieve cooling of the partition plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of the controller body of the present invention;

[0022] Figure 3 is a schematic cross-sectional view of the cross-sectional structure of the controller body of the present invention;

[0023] Figure 4 is a schematic cross-sectional view of the cross-sectional structure of the bottom shell of the present invention;

[0024] Figure 5 is a schematic diagram of the structure of the bottom shell of the present invention;

[0025] Figure 6 is a schematic diagram of the partial structure of the housing of the present invention;

[0026] Figure 7 is a schematic diagram of the structure of the ball valve of the present invention;

[0027] Figure 8 is a schematic diagram of the structure of the impeller of the present invention;

[0028] Figure 9 is a schematic diagram of the structure of the exhaust duct of the present invention No. 1;

[0029] Figure 10 is a schematic diagram of the structure of the exhaust duct of the present invention No. 2.

[0030] The meanings of the reference numerals in the figure are as follows:

[0031] 100, controller body;

[0032] 110, housing; 110A, cooling chamber; 111, partition; 111A, infusion chamber; 112, water inlet pipe; 113, drain pipe; 114, shunt pipe;

[0033] 120, floating block; 121, through hole;

[0034] 130, connecting piece;

[0035] 140, water pump; 141, impeller; 142, liquid discharge pipe;

[0036] 150, installation groove; 151, turntable; 152, straight rod;

[0037] 160, ball valve; 161, drive rod; 162, connecting rod;

[0038] 170, air deflector;

[0039] 180, exhaust duct; 181, liquid injection port;

[0040] 200, bracket body;

[0041] 210, bottom shell; 210A, liquid storage chamber;

[0042] 220, spoiler; 221, connecting pipe. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0045] Furthermore, in the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0046] In the first embodiment, a bracket of an electric vehicle motor controller is provided. First, Figures 1-3 As shown, it includes a controller body 100 and a bracket body 200. The controller body 100 includes a shell 110. The bottom of the shell 110 is fixedly connected with a float 120. The float 120 is a flexible structure. The float 120 preferably adopts an air bag. The air bag has a strong buffering performance to prevent the vibration of the vehicle body from being transmitted to the shell 110 through the bottom shell 210. At the same time, considering that the vehicle will produce a large shaking when passing through a pothole section, a plurality of through holes 121 are opened on the top of the float 120 so that the float 120 can sink into the water, thereby prolonging the shaking force and protecting the electrical components in the shell 110. Then, as shown in FIG. Figure 4 As shown, the support body 200 includes a bottom shell 210, which is fixedly arranged on the frame and arranged at the bottom of the shell 110. The side wall of the floating block 120 fits with the inner wall of the bottom shell 210, which can reduce the shaking of the shell 110, thereby improving the stability of the floating block 120. The top of the bottom shell 210 is connected to the side wall of the shell 110 through a connecting piece 130. The connecting piece 130 is a flexible and sealed structure, which can not affect the activity of the shell 110 and also has a waterproof effect. A liquid storage chamber 210A is formed between the interior of the housing 10 and the bottom of the housing 110. Liquid is provided in the liquid storage chamber 210A. The bottom housing 210 drives the float 120 to move during the shaking process so that the float 120 enters the liquid. When the vehicle vibrates or shakes, the bottom housing 210 drives the liquid in the liquid storage chamber 210A to shake, so that the float 120 enters the liquid, thereby prolonging the force applied to the housing 110 and reducing the vibration and shaking of the partition 111, thereby protecting the electronic components in the housing 110.

[0047] When this embodiment is used in practice, the vibration or shaking of the vehicle during driving is transmitted to the bottom shell 210 through the frame, causing the bottom shell 210 to vibrate or shake along with the vehicle, while the float 120 in contact with the bottom shell 210 filters part of the vibration or shaking force through its own flexible structure. During this process, the bottom shell 210 will also cause the liquid in the liquid storage chamber 210A to vibrate or shake, and cause the float 120 to enter the water, thereby prolonging the time of the force exerted by the bottom shell 210 on the shell 110, thereby achieving protection for the shell 110.

[0048] In addition, considering that the liquid in the bottom shell 210 will move backward or forward when the vehicle is accelerated or braked suddenly, the liquid will drive the floating block 120 to shake. Figure 5As shown in the figure, a plurality of spoiler plates 220 are longitudinally slidably arranged on the inner wall of the bottom case 210. The spoiler plates 220 can float in the liquid in the bottom case 210, which can keep the bottom case 210 always at the bottom of the floating block 120. During operation, the spoiler plates 220 divide the liquid in the bottom case 210 into multiple segments. When the liquid in the bottom case 210 shakes, the spoiler plates 220 block it, preventing the liquid from shaking extensively.

[0049] Second embodiment. Considering that the housing 110 needs to be connected to coolant during operation to take away the temperature inside the housing 110 through the flowing coolant, but the coolant also needs to cool the motor. After long-term operation, the temperature of the coolant is likely to rise. Therefore, as Figure 6 shown:

[0050] A wind guide plate 170 is fixedly arranged on the side wall of the housing 110. The wind guide plate 170 is inclined. The wind guide plate 170 acts on the housing 110 with the impact force of the wind, causing the housing 110 to rotate. Installation grooves 150 are formed on the opposite sides of the top of the floating block 120. A turntable 151 is rotatably arranged in the installation grooves 150. A straight rod 152 longitudinally penetrates through the turntable 151. The bottom end of the straight rod 152 is fixedly arranged in the bottom case 210. Then, as Figure 2 shown, a partition plate 111 is fixedly connected inside the housing 110. An infusion cavity 111A for reducing the temperature inside the housing 110 is formed in the partition plate 111. The ends of the infusion cavity 111A are respectively communicated with a water inlet pipe 112 and a drain pipe 113. A shunt pipe 114 is connected to the side wall of the water inlet pipe 112. One end of the shunt pipe 114 is communicated with the drain pipe 113. A control member is arranged in the water inlet pipe 112. The control member blocks the liquid in the infusion cavity 111A when the housing 110 is inclined, so that the liquid in the water inlet pipe 112 flows into the shunt pipe 114.

[0051] During the operation of this embodiment, the impact force generated between the vehicle and the wind during movement acts on the inclined surface of the wind guide plate 170, causing the wind guide plate 170 to bear a large weight, forcing the floating block 120 to rotate through the turntable 151. After rotation, the distance between the housing 110 and the bottom case 210 increases, causing the control member to block the infusion cavity 111A, so that the coolant flows into the drain pipe 113 through the shunt pipe 114 and does not pass through the housing 110. At this time, the high-speed moving vehicle cools the housing 110 through the external wind.

[0052] It should be noted that a one-way valve is arranged at the end of the drain pipe 113 close to the housing 110 to prevent the liquid in the shunt pipe 114 from flowing into the infusion cavity 111A.

[0053] Figure 7A control component is shown, which includes a ball valve 160 rotatably arranged in the water inlet pipe 112. A convex rod is fixedly arranged on the outer wall of the ball valve 160, which penetrates the bottom of the water inlet pipe 112 and is rotatably connected to the water inlet pipe 112. A driving rod 161 is connected to the inner thread of the convex rod. A spiral groove is arranged on the outer wall of the driving rod 161. The bottom end of the driving rod 161 is rotatably connected to a connecting rod 162. The bottom end of the connecting rod 162 is rotatably connected to the side wall of the bottom shell 210. When the shell 110 is tilted, the distance between the inclined end of the shell 110 and the bottom shell 210 becomes smaller, so that the driving rod 161 moves into the ball valve 160, and drives the convex rod through the spiral groove on the outer wall of the driving rod 161, so that the convex rod drives the ball valve 160 to rotate and block the water inlet pipe 112, thereby realizing the control of the flow direction of the coolant in the water inlet pipe 112.

[0054] Specifically, considering that as the use time increases, the liquid in the bottom shell 210 will inevitably vaporize and evaporate, resulting in less liquid, causing the float 120 to contact the inner wall of the bottom of the bottom shell 210. At this time, the ball valve 160 will also block the coolant, and the coolant cannot flow into the infusion cavity 111A. For this reason, two spiral grooves are provided on the outer wall of the driving rod 161, and the two spiral grooves are respectively provided at the two ends of the driving rod 161. The two spiral grooves are symmetrical structures. When the liquid in the bottom shell 210 evaporates, the float 120 drives the shell 110 to move down to the bottom of the bottom shell 210. At this time, the threaded groove at the bottom end of the driving rod 161 enters the ball valve 160, and the ball valve 160 is rotated in the opposite direction, so that the ball valve 160 opens the water inlet pipe 112 again, allowing the liquid to flow into the infusion cavity 111A.

[0055] In addition, in order to reduce the heat of the liquid in the bottom shell 210, a plurality of connecting pipes 221 are fixedly arranged on the bottom inner wall of the bottom shell 210. Both ends of the connecting pipes 221 pass through the bottom shell 210. External air enters the connecting pipes 221 and takes away the heat of the liquid in the bottom shell 210 through the connecting pipes 221, thereby reducing the heat of the liquid in the bottom shell 210.

[0056] In the third embodiment, considering that the air cooling cannot make large-area contact with the housing 110, resulting in low cooling efficiency of the housing 110, Figure 2 and Figure 8 As shown:

[0057] A cooling chamber 110A is formed between the bottom of the partition plate 111 and the inside of the housing 110. A water pump 140 is arranged in the liquid storage chamber 210A. An input shaft is arranged in the water pump 140. The input shaft of the water pump 140 penetrates through the side wall of the bottom shell 210 and is rotatably connected to the bottom shell 210. The end of the input shaft of the water pump 140 is fixedly connected with an impeller 141. The drain port of the water pump 140 is communicated with a liquid discharge pipe 142. One end of the liquid discharge pipe 142 is communicated with the cooling chamber 110A. An overflow port is arranged on the side wall of the housing 110 at the position of the cooling chamber 110A. It should be noted that the overflow port is located below the floating block 120 so that the liquid can contact the floating block 120 to realize the cooling of the floating block 120.

[0058] When this embodiment is working, the impact force between the high-speed moving vehicle and the wind acts on the impeller 141, causing the impeller 141 to rotate and drive the water pump 140 to work through the input shaft. The water pump 140 works to pump the liquid in the liquid storage chamber 210A into the cooling chamber 110A through the liquid discharge pipe 142. The liquid accumulates in the housing 110 and contacts the floating block 120, so that the temperature of the floating block 120 is absorbed by the liquid. Then the liquid is discharged from the overflow port to the surface of the floating block 120 and then discharged into the liquid storage chamber 210A through the through hole 121 to complete the cycle.

[0059] The fourth embodiment is implemented on the basis of the second embodiment. Considering that the water pump 140 and the impeller 141 will be worn after long-term use, resulting in a reduction in the cooling performance, and the rotation of the impeller 141 will also generate slight vibrations, which are likely to drive the housing 110 to rotate. Therefore, as Figure 9 and Figure 10 shown:

[0060] An exhaust air pipe 180 is arranged in the floating block 120. The exhaust air pipe 180 is preferably a corrugated pipe, and the corrugated pipe has the function of expansion and contraction to facilitate the support of the rotation of the housing 110. Both ends of the exhaust air pipe 180 penetrate through the top of the floating block 120. One end of the exhaust air pipe 180 is fixedly arranged on the top of the bottom shell 210. Liquid injection ports 181 are arranged at the top of one end of the exhaust air pipe 180 and the top of the floating block 120, and the two liquid injection ports 181 are communicated with each other. The other end of the exhaust air pipe 180 penetrates through the cooling chamber 110A, and leakage grooves are arranged at the bottom of the part of the exhaust air pipe 180 located in the cooling chamber 110A.

[0061] When this embodiment is working, as Figure 10 shown, the impact force between the high-speed moving vehicle and the wind causes the housing 110 to rotate. At this time, part of the liquid will pass through the through hole 121 (please refer to Figure 2As shown in the figure, it enters the top of the floating block 120, and part of the liquid on the top of the floating block 120 enters the exhaust duct 180 through the liquid injection port 181. At this time, air is blown into one end of the exhaust duct 180 and then blown out through the other end. During this process, the liquid in the exhaust duct 180 is blown towards the other end of the exhaust duct 180. When the liquid passes through the cooling chamber 110A, it drips into the cooling chamber 110A through the leakage groove, thereby realizing the cooling of the partition plate 111.

[0062] In addition, in order to prevent the liquid in the exhaust duct 180 from being discharged from the other end, the exhaust duct 180 is bent upward at one end passing through the cooling chamber 110A. The upward bending can increase the resistance of the liquid to discharge from the exhaust duct 180, thereby preventing the phenomenon that the liquid in the exhaust duct 180 is discharged from the other end.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A bracket for an electric vehicle motor controller, comprising a controller body (100) and a bracket body (200), wherein the controller body (100) includes a housing (110), characterized in that: A floating block (120) is fixedly connected to the bottom of the housing (110). The floating block (120) is a flexible structure. A plurality of through holes (121) are formed through the top of the floating block (120). The bracket body (200) includes a bottom shell (210). The bottom shell (210) is disposed at the bottom of the housing (110). The side wall of the floating block (120) is attached to the inner wall of the bottom shell (210). The top of the bottom shell (210) is connected to the side wall of the housing (110) through a connecting member (130). The connecting member (130) is a flexible and sealed structure. A liquid storage cavity (210A) is formed between the inside of the bottom shell (210) and the bottom of the housing (110). A liquid is provided in the liquid storage cavity (210A). The bottom shell (210) drives the floating block (120) to move during shaking, so that the floating block (120) enters the liquid; A wind guide plate (170) is fixedly disposed on the side wall of the housing (110). The wind guide plate (170) is inclined. The wind guide plate (170) acts on the housing (110) with the impact force of the wind, so that the housing (110) rotates. Mounting grooves (150) are formed on opposite sides of the top of the floating block (120). A turntable (151) is rotatably disposed in the mounting groove (150). A straight rod (152) longitudinally penetrates through the turntable (151). The bottom end of the straight rod (152) is fixedly disposed in the bottom shell (210). A partition plate (111) is fixedly connected in the housing (110). An infusion cavity (111A) for reducing the temperature in the housing (110) is formed in the partition plate (111). The ends of the infusion cavity (111A) are respectively communicated with a water inlet pipe (112) and a drain pipe (113). A shunt pipe (114) is connected to the side wall of the water inlet pipe (112). One end of the shunt pipe (114) is communicated with the drain pipe (113). A control member is provided in the water inlet pipe (112). The control member blocks the liquid in the infusion cavity (111A) when the housing (110) is tilted, so that the liquid in the water inlet pipe (112) flows into the shunt pipe (114); The control member includes a ball valve (160) rotatably disposed in the water inlet pipe (112). A convex rod is fixedly disposed on the outer wall of the ball valve (160). The convex rod penetrates through the bottom of the water inlet pipe (112) and is rotatably connected to the water inlet pipe (112). A driving rod (161) is threadedly connected in the convex rod. A spiral groove is provided on the outer wall of the driving rod (161). The bottom end of the driving rod (161) is rotatably connected to a connecting rod (162). The bottom end of the connecting rod (162) is rotatably connected to the side wall of the bottom shell (210).

2. The bracket of the electric vehicle motor controller according to claim 1, characterized in that: The floating block (120) is an airbag.

3. The bracket of the electric vehicle motor controller according to claim 1, characterized in that: A plurality of flow disturbing plates (220) are longitudinally slidably disposed on the inner wall of the bottom shell (210). The flow disturbing plates (220) float in the liquid in the bottom shell (210).

4. The bracket of the electric vehicle motor controller according to claim 1, characterized in that: There are two spiral grooves provided on the outer wall of the driving rod (161), and the two spiral grooves are respectively arranged at both ends of the driving rod (161), and the two spiral grooves are of a symmetrical structure.

5. The bracket of the electric vehicle motor controller according to claim 1, wherein: A plurality of connecting pipes (221) are fixedly arranged on the inner wall of the bottom of the bottom shell (210), and both ends of the connecting pipe (221) penetrate through the bottom shell (210).

6. The bracket of the electric vehicle motor controller according to claim 1, characterized in that: A cooling cavity (110A) is formed between the bottom of the partition plate (111) and the inside of the housing (110). A water pump (140) is arranged in the liquid storage cavity (210A). An input shaft is arranged in the water pump (140). The input shaft of the water pump (140) penetrates through the side wall of the bottom shell (210) and is rotatably connected to the bottom shell (210). The end of the input shaft of the water pump (140) is fixedly connected with an impeller (141). The drain port of the water pump (140) is communicated with a drain pipe (142). One end of the drain pipe (142) is communicated with the cooling cavity (110A). An overflow port is opened on the side wall of the housing (110) at the position of the cooling cavity (110A).

7. The bracket of the electric vehicle motor controller according to claim 6, characterized in that: An exhaust pipe (180) is arranged in the floating block (120), and both ends of the exhaust pipe (180) penetrate through the top of the floating block (120). One end of the exhaust pipe (180) is fixedly arranged on the top of the bottom shell (210). Liquid injection ports (181) are opened at the top of one end of the exhaust pipe (180) and the top of the floating block (120), and the two liquid injection ports (181) are communicated with each other. The other end of the exhaust pipe (180) penetrates through the cooling cavity (110A), and a leakage groove is opened at the bottom of the part of the exhaust pipe (180) located in the cooling cavity (110A).

8. The bracket of the electric vehicle motor controller according to claim 7, characterized in that: One end of the exhaust pipe (180) penetrating through the cooling cavity (110A) is bent upward.

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