Motor controller air cooling heat dissipation structure and engineering machinery

Abstract

The utility model discloses a motor controller air cooling heat radiation structure and engineering machinery, comprising a whole machine, the motor controller is arranged in the whole machine, a whole machine fan is arranged beside the motor controller, the whole machine fan can suck external cold air of the whole machine into the whole machine, and the whole machine fan is connected with the motor controller. The complete machine fan can blow cold air to the surface of the motor controller for heat dissipation. The motor controller comprises a motor controller body, cooling fins and a motor controller fan, the motor controller body is in contact with the cooling fins for heat conduction, and the motor controller fan is arranged at one ends of the cooling fins. The motor controller fan can blow in cold air from one ends of the heat dissipation fins and blow out the cold air from the other ends of the heat dissipation fins for heat exchange. According to the utility model, the problem of over-temperature of the motor controller during working in summer is solved; and the problem that the protection grade of the whole vehicle is reduced due to a large number of holes formed in the covering part is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery technical field especially relates to a motor controller air -cooled heat radiation structure and engineering machinery. BACKGROUND

[0002] At present in engineering machinery, miniature electric excavator uses motor controller (hereinafter referred to as MCU) to control motor, and the motor controller converts the direct current in the whole machine into alternating current to control the motor to drive the main pump to work in various conditions, and the motor controller is prone to overheat during long time work, especially in summer, which leads to power limitation of the motor controller and vehicle fault. Since the space of the miniature electric excavator is limited, the commonly used heat dissipation mode is to increase the heat dissipation holes on the covering part of the excavator, and the air duct is circulated by the heat dissipation fan inside the excavator to dissipate heat for the MCU.

[0003] Briefly describe the deficiencies of the prior art:

[0004] 1. The covering part is opened to dissipate heat for the motor controller, which reduces the protection level of the vehicle, and rainwater enters the interior of the vehicle.

[0005] 2. A large number of openings reduce the strength of the covering part of the vehicle, and the covering part is damaged when encountering obstacles.

[0006] 3. The covering part is opened, which leads to poor appearance of the vehicle and is not beautiful. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a motor controller air -cooled heat radiation structure and engineering machinery to solve the technical problem that the motor controller in the prior art is prone to overheat during long time work, especially in summer, which leads to power limitation of the motor controller and vehicle fault.

[0008] In order to achieve the above-mentioned purpose, the technical scheme of the utility model provides a motor controller air -cooled heat radiation structure, which comprises a whole machine, the inside of the whole machine is provided with a motor controller, one side of the motor controller is provided with a whole machine fan, the whole machine fan can suck the external cold air of the whole machine into the inside of the whole machine, and the whole machine fan can blow the cold air to the surface of the motor controller to dissipate heat. The motor controller comprises a motor controller body, heat dissipation fins and a motor controller fan, the motor controller body is in contact with the heat dissipation fins for heat conduction, the motor controller fan is arranged at one end of the heat dissipation fins, and the motor controller fan can blow the cold air from one end of the heat dissipation fins into the other end to exchange heat.

[0009] Further, the motor controller fan is arranged at the top end of the heat dissipation fins, and the motor controller fan can blow the cold air from the heat dissipation fins downwards to exchange heat.

[0010] Further, the lower part of the heat dissipation fin is provided with an air outlet channel, the air outlet channel passes through the bottom of the whole machine, and the cold air of the heat dissipation fin can be blown out from the bottom of the whole machine after heat exchange.

[0011] Further, the number of the motor controller fan is several, the several motor controller fans are sequentially arranged at the top end of the heat dissipation fin in the horizontal direction, the several motor controller fans are connected in series, and one of the motor controller fans is connected with a fan power supply port.

[0012] Further, the number of the motor controller fan is three, the three motor controller fans are sequentially arranged at the top end of the heat dissipation fin in the left-right direction, and the power of the motor controller fan is 18W±1W.

[0013] Further, the connecting part of the motor controller body and the heat dissipation fin is coated with heat dissipation silicon grease.

[0014] Further, the several heat dissipation fins are arranged on the front end face of the motor controller body, and the heat dissipation fins are parallel to the axial direction of the motor controller fan.

[0015] Further, the whole machine fan is arranged behind the motor controller body.

[0016] Further, the whole machine fan is connected with an air suction channel, and the air suction channel is arranged on the side wall of the whole machine.

[0017] The utility model further provides an engineering machinery, including engineering machinery body, still include any one technology scheme of above-mentioned motor controller fan cooling heat dissipation structure, motor controller fan cooling heat dissipation structure sets up on engineering machinery body.

[0018] In summary, the technical solution of this utility model has the following beneficial effects: The structure of this utility model is reasonable. (1) The whole machine is equipped with a motor controller inside, and a whole machine fan is provided on one side of the motor controller. The whole machine fan can draw the external cold air into the whole machine and blow the cold air onto the surface of the motor controller for heat dissipation. Thus, the whole machine fan can be used to draw in the external cold air and blow it into the surface of the motor controller for heat dissipation. (2) The motor controller includes the motor controller body, the heat dissipation fins, and the motor controller fan. The motor controller body and the heat dissipation fins are in contact for heat conduction. The motor controller fan is set at one end of the heat dissipation fins. The motor controller fan can blow the cold air from one end of the heat dissipation fins to the other end for heat exchange. Thus, the motor controller fan on the heat dissipation fins can be used to blow the cold air from one end of the heat dissipation fins to the other end for heat exchange, and finally achieve forced air cooling. Analysis shows that this invention, through the sequential cooperation of the whole machine fan, the motor controller fan, and the heat dissipation fins, can directly and quickly dissipate heat from the surface of the motor controller, thus greatly improving the heat dissipation effect and enabling the motor controller to work for a long time even in high temperatures in summer. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the air-cooled heat dissipation structure of the motor controller of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the motor controller of this utility model;

[0021] Figure 3 This is a partial structural diagram of the bottom of the motor controller of this utility model;

[0022] Explanation of reference numerals in the attached drawings: main unit (1), motor controller (2), main unit fan (3); air outlet channel (101), air intake channel (102); motor controller body (201), heat sink fins (202), motor controller fan (203), fan power port (204), thermal grease (205). Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0024] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1The observer is set as up, the observer is set as down, it should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "upper", "lower" in the text indicate the orientation or positional relationship based on the orientation or positional relationship set based on the drawings, which is only for the convenience of clearly describing the utility model, and is not indicative or suggestive of the structure or parts indicated having a specific orientation, being constructed in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third", "fourth" are only for the purpose of clarity or simplification of description, and cannot be understood as indicative or suggestive of relative importance or quantity.

[0025] Referring to Figures 1 to 3The embodiment provides a motor controller air-cooled heat dissipation structure, which comprises a whole machine 1, a motor controller 2 arranged in the whole machine 1, and a whole machine fan 3 arranged beside the motor controller 2. The whole machine fan 3 can suck the external cold air of the whole machine 1 into the inside of the whole machine 1, and blow the cold air to the surface of the motor controller 2 to dissipate heat. The motor controller 2 comprises a motor controller body 201, heat dissipation fins 202 and a motor controller fan 203. The motor controller body 201 is in contact with the heat dissipation fins 202 to conduct heat. The motor controller fan 203 is arranged at one end of the heat dissipation fins 202, and the motor controller fan 203 can blow the cold air into one end of the heat dissipation fins 202 and blow the cold air out from the other end to exchange heat. Effects: (1) The motor controller is arranged in the inside of the whole machine, the whole machine fan is arranged beside the motor controller, the whole machine fan can suck the external cold air of the whole machine into the inside of the whole machine, and the whole machine fan can blow the cold air to the surface of the motor controller to dissipate heat. Thus, the external cold air can be sucked into the motor controller by the whole machine fan to dissipate heat. (2) The motor controller comprises a motor controller body and heat dissipation fins, and a motor controller fan. The motor controller body is in contact with the heat dissipation fins to conduct heat. The motor controller fan is arranged at one end of the heat dissipation fins, and the motor controller fan can blow the cold air into one end of the heat dissipation fins and blow the cold air out from the other end to exchange heat. Thus, the cold air can be blown out from one end of the heat dissipation fins to the other end by the motor controller fan on the heat dissipation fins to exchange heat, and finally forced air cooling and heat dissipation are realized. According to the analysis, the motor controller surface can be directly and quickly cooled by the cooperation of the whole machine fan, the motor controller fan and the heat dissipation fins. Therefore, the heat dissipation effect is greatly improved, and the motor controller can work for a long time in high temperature in summer. Compared with the common heat dissipation mode (namely, a heat dissipation hole is formed on the covering part of the excavator, a heat dissipation fan in the excavator is used to realize air flow circulation, and the MCU is cooled), the heat dissipation of the utility model is efficient, and therefore the covering part does not need to be punched in a large number. Cost: The motor controller fan and the heat dissipation fins are added on the MCU, the cost is relatively low compared with punching the covering part, and the cost is reduced. Performance: The motor controller surface is directly cooled, and the heat dissipation effect is much better than that of the covering part.

[0026] Specifically, the motor controller fan 203 is arranged at the top end of the heat dissipation fin 202, and the motor controller fan 203 can blow the cold air out from the heat dissipation fin 202 from top to bottom to exchange heat. Effect: In this way, the hot air formed after heat exchange can flow from top to bottom.

[0027] Specifically, an air outlet channel 101 is arranged below the heat dissipation fin 202, the air outlet channel 101 passes through the bottom of the whole machine 1 downwards, and the cold air of the heat dissipation fin 202 can be blown out from the bottom of the whole machine 1 after heat exchange. Effect: The flow field of the motor controller heat dissipation in the whole machine is as shown in the figure. Figure 1As shown, the whole machine fan will suck the external cold air into the motor controller surface to dissipate heat, and the motor controller fan on the heat dissipation fin will blow the cold air from top to bottom to exchange heat, and finally blow out from the bottom of the whole machine, so as to combine the heat dissipation flow field (i.e. the air outlet channel 101) of the whole machine to export the motor controller temperature.

[0028] Specifically, the number of motor controller fans 203 is several, and the several motor controller fans 203 are sequentially arranged at the top end of the heat dissipation fin 202 in the horizontal direction, and the several motor controller fans 203 are connected in series, and one of the motor controller fans 203 is connected with the fan power supply port 204. Action: The several fans are connected in series, so as to blow the heat dissipation fin 202 from top to bottom together.

[0029] Specifically, the number of motor controller fans 203 is three, and the three motor controller fans 203 are sequentially arranged at the top end of the heat dissipation fin 202 in the left-right direction, and the power of the motor controller fan 203 is 18W±1W. Action: The number of fans is 3, and the power is 18W, which can enhance the effect of forced air cooling heat dissipation.

[0030] Specifically, the connection between the motor controller body 201 and the heat dissipation fin 202 is coated with heat dissipation silicone grease 205. Action: By coating the heat dissipation silicone grease at the connection between the heat dissipation fin and the motor controller body, the contact heat transfer efficiency is greatly improved, and of course other heat-conducting materials with the same function can also be used.

[0031] Specifically, a plurality of heat dissipation fins 202 are arranged at the front end of the motor controller body 201, and the heat dissipation fins 202 are parallel to the axial direction of the motor controller fan 203. Action: In this way, the wind can flow more easily.

[0032] Specifically, the whole machine fan 3 is arranged at the rear of the motor controller body 201. Action: In this way, the cold air blown out by the whole machine fan 3 can first cover the motor controller body 201 forward, and then flow from top to bottom under the power of the motor controller fan 203.

[0033] Specifically, the whole machine fan 3 is connected with the air suction channel 102, and the air suction channel 102 is arranged on the side wall of the whole machine 1. Action: Under the cooperation of the whole machine fan 3 and the air suction channel 102, the cold air can quickly enter the inside of the whole machine.

[0034] The utility model also provides an engineering machinery, including engineering machinery body, still include any one of preceding technical scheme's motor controller air cooling heat dissipation structure, motor controller air cooling heat dissipation structure sets up on engineering machinery body. The range of application of motor controller air cooling heat dissipation structure: electric excavator, electric forklift, high-altitude platform, electric loader and other engineering machinery.

[0035] The difference between the technical solution and the prior art is that: 1, the heat dissipation technology of the motor controller of the existing micro electric excavator mainly includes covering piece opening, so that the external air and the air in the motor compartment flow, and then the motor controller is cooled (a large number of openings are required for the covering piece); while in the technical solution, the motor controller body is provided with heat dissipation fins, the connection part between the heat dissipation fins and the motor controller body is coated with heat dissipation silicone grease, the top of the heat dissipation fins is provided with motor controller fans, the number of the motor controller fans is three, the power is 18W, the motor controller fans are connected in series, and forced air cooling is performed (a large number of openings are not required for the covering piece due to fast heat dissipation).

[0036] 2, in order to prevent the MCU from over-temperature, the MCU power selection of the prior art is relatively large, the power of the MCU is increased, so that the MCU is not easy to over-temperature, but the utility model does not need to select the MCU with large power, and the small-power motor can be directly used in the air cooling mode.

[0037] In summary, the utility model solves the problem of over-temperature of the motor controller during summer work, and solves the problem of a large number of openings of the covering piece, which leads to the decrease of the protection level of the whole vehicle.

[0038] The above is the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the principle of the utility model, and these improvements and decorations are also regarded as the protection range of the utility model.

Claims

1. A wind cooling heat dissipation structure of a motor controller, comprising a whole machine (1), characterized in that: The internal of the whole machine (1) is provided with a motor controller (2), one side of the motor controller (2) is provided with a whole machine fan (3), the whole machine fan (3) can suck the cold air outside the whole machine (1) into the inside of the whole machine (1), and the whole machine fan (3) can blow the cold air to the surface of the motor controller (2) to heat dissipation; the motor controller (2) comprises a motor controller body (201) and a heat dissipation fin (202), a motor controller fan (203), the motor controller body (201) is in contact with the heat dissipation fin (202) to conduct heat, the motor controller fan (203) is arranged at one end of the heat dissipation fin (202), and the motor controller fan (203) can blow the cold air from one end of the heat dissipation fin (202) into the other end to heat exchange.

2. The wind cooling structure of the motor controller according to claim 1, characterized in that: The motor controller fan (203) is arranged at the top end of the heat dissipation fin (202), and the motor controller fan (203) can blow the cold air from the heat dissipation fin (202) downwards to heat exchange.

3. The air-cooled heat dissipation structure of the motor controller according to claim 2, characterized in that: The heat dissipation fin (202) is provided below the air outlet channel (101), the air outlet channel (101) passes through the bottom of the whole machine (1) downwards, and the cold air of the heat dissipation fin (202) can be blown out from the bottom of the whole machine (1) after heat exchange.

4. The air-cooled heat dissipation structure of the motor controller according to claim 2, characterized in that: The number of the motor controller fan (203) is several, and the several motor controller fans (203) are sequentially arranged at the top end of the heat dissipation fin (202) in the horizontal direction and are connected in series, and one of the motor controller fans (203) is connected with a fan power supply port (204).

5. The air-cooled heat dissipation structure of the motor controller according to claim 4, characterized in that: The number of the motor controller fan (203) is three, the three motor controller fans (203) are sequentially arranged at the top end of the heat dissipation fin (202) in the left-right direction, and the power of the motor controller fan (203) is 18W±1W.

6. The air-cooled heat dissipation structure of a motor controller according to any one of claims 1 to 5, characterized in that: The connection between the motor controller body (201) and the heat dissipation fin (202) is coated with heat dissipation silicone grease (205).

7. The air-cooled heat dissipation structure of a motor controller according to any one of claims 1 to 5, characterized in that: The several heat dissipation fins (202) are arranged at the front end face of the motor controller body (201), and the heat dissipation fins (202) are parallel to the axial direction of the motor controller fan (203).

8. The air-cooled heat dissipation structure of a motor controller according to any one of claims 1 to 5, characterized in that: The whole machine fan (3) is arranged behind the motor controller body (201).

9. The air-cooled heat dissipation structure of the motor controller according to claim 8, characterized in that: The whole machine fan (3) is connected with an air suction channel (102), and the air suction channel (102) is arranged on the side wall of the whole machine (1).

10. A working machine comprising a working machine body, characterised in that: The motor controller air cooling heat dissipation structure of any one of claims 1 to 9 is further arranged on the engineering machinery body.

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