Controller and automobile

Abstract

The controller comprises a shell, a fan and a baffle, a plurality of containing cavities are formed in the shell at intervals in the thickness direction of the shell, a circuit board is arranged in each containing cavity, and the peripheral side of the containing cavity located on the upper side is provided with an avoiding space relative to the containing cavity located on the lower side. A plurality of main radiating fins are formed at the top of the shell, the fan is arranged at the top of the shell and surrounded by the plurality of main radiating fins, and the baffle covers the fan and the upper sides of the main radiating fins around the fan. In addition, a plurality of auxiliary heat dissipation fins penetrating through the avoiding space from the containing cavity on the lower side are formed on the peripheral side of each containing cavity located below the uppermost side. According to the controller, the plurality of main heat dissipation fins and the auxiliary heat dissipation fins flush with the main heat dissipation fins are used for heat dissipation, so that a heat dissipation function is provided for the circuit boards in the plurality of accommodating spaces, the space occupied by the controller in the thickness direction is greatly reduced, and the controller can be conveniently mounted in an automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to a controller which can be used for an automobile. Background Art

[0002] With the continuous improvement of the degree of electrification, the application of the controller is indeed becoming more and more extensive. When the controller is working, it will generate heat. If the heat cannot be dissipated in time, it will cause the temperature of the controller to rise, thus affecting its normal operation. Moreover, too high a temperature will accelerate the aging of the components inside the controller and shorten its service life. As the functions of the controller are becoming more and more complex, multiple circuit boards may be arranged inside the controller. With the increase of the components inside the controller, the heat generated during the operation of the controller is greater, and the heat dissipation of the controller is a key factor to ensure its normal operation and extend its service life.

[0003] In the prior art, the heat dissipation of the controller mainly depends on three ways: heat conduction, heat convection and heat radiation. The composite heat dissipation method can also be adopted to improve the heat dissipation efficiency.

[0004] For example, most of the controllers existing in the prior art arrange multiple circuit boards in a stacked manner, and generally set multiple heat sinks on the top of the housing to dissipate heat from the controller. The multiple heat sinks arranged on the top of the housing can play a good heat dissipation effect on the upper circuit board, while the circuit board arranged on the lower layer is separated by the upper circuit board and cannot be directly dissipated by the multiple heat sinks on the top of the housing. In order to achieve a better heat dissipation effect on the lower circuit board, multiple heat sinks are usually arranged on other surfaces of the housing to play a better heat dissipation effect on the lower circuit board. However, in order to ensure the heat dissipation effect on multiple circuit boards, arranging heat sinks on each outer surface of the housing will cause the controller to occupy a large space. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the technical problem in the prior art that the heat dissipation structure of the controller causes the controller to occupy a large space in order to ensure the heat dissipation effect on multiple circuit boards.

[0006] To solve the above technical problem, an embodiment of the utility model discloses a controller, which includes a housing, a fan and a baffle. The housing is provided with a plurality of accommodation cavities at intervals along its thickness direction, and each accommodation cavity is provided with a circuit board. Looking along the thickness direction of the housing, the circumferential side of the accommodation cavity located on the upper side has an avoidance space relative to the accommodation cavity located on the lower side.

[0007] The top of the housing forms a plurality of main heat dissipation fins extending along the thickness direction and arranged side by side. The fan is arranged on the top of the housing and surrounded by the plurality of main heat dissipation fins. The baffle covers the upper side of the fan and the main heat dissipation fins around the fan and is fixedly connected to the top of the housing.

[0008] Moreover, a plurality of auxiliary heat dissipation fins are formed on the periphery of each accommodation cavity located below the uppermost side, extending in the thickness direction and arranged side by side through the avoidance space of the upper accommodation cavity from the side of the lower accommodation cavity.

[0009] With the above technical solution, a plurality of accommodation cavities are arranged at intervals in the thickness direction of the housing of this controller, and a circuit board is arranged in each accommodation cavity, so that the heat generated when the circuit boards in the respective accommodation cavities work is dispersed in the respective accommodation cavities, avoiding excessive heat accumulation. Further, a plurality of main heat dissipation fins extending in the thickness direction and arranged side by side are formed at the top of the housing, which can diffuse the heat in the uppermost accommodation cavity to the outside air. The fan is arranged at the top of the housing and surrounded by a plurality of main heat dissipation fins. Under the obstruction of the upper baffle, the fan can drive the air flow between the plurality of main heat dissipation fins, thereby diffusing the heat on the main heat dissipation fins to the outside and reducing the temperature in the uppermost accommodation cavity of the housing. For each accommodation cavity located below the uppermost side, a plurality of auxiliary heat dissipation fins extending in the thickness direction from the position of the avoidance space are cleverly used to transfer the heat to the outside, thereby reducing the temperature of the accommodation cavity located on the lower side in the housing.

[0010] An embodiment of the present invention discloses a controller. In the thickness direction of the housing, the tops of the auxiliary heat dissipation fins are flush with the tops of the main heat dissipation fins, and the auxiliary heat dissipation fins are distributed around the main heat dissipation fins along the peripheral side of the top of the housing.

[0011] With the above technical solution, the tops of the auxiliary heat dissipation fins are flush with the tops of the main heat dissipation fins. Without increasing the space occupied by the controller in the thickness direction, it ensures that the auxiliary heat dissipation fins have a large heat dissipation area, thereby transferring the heat in the lower accommodation cavity to the outside and ensuring good heat dissipation effects for the circuit boards in the plurality of accommodation spaces.

[0012] Of course, in some other embodiments, the tops of the auxiliary heat dissipation fins may not be flush with the tops of the main heat dissipation fins, and their structures can be set as needed.

[0013] An embodiment of the present invention discloses a controller. The housing includes an upper cover, a housing body, and a base sequentially arranged at intervals in its thickness direction. The upper cover and the housing body form a first accommodation cavity, and the housing body and the base form a second accommodation cavity.

[0014] Moreover, when viewed in the thickness direction of the housing, one side of the first accommodation cavity in the width direction of the housing is recessed inward, forming an avoidance space relative to the second accommodation cavity.

[0015] With the above technical solution, the upper cover and the housing body form a first accommodation cavity, and the housing body and the base form a second accommodation cavity. An accommodation cavity is formed between the two structures. It only requires placing the circuit board in one of the components and then assembling the two opposite components together to complete the assembly step of assembling any circuit board into the corresponding accommodation cavity, simplifying the assembly process.

[0016] An embodiment of the present utility model discloses a controller. A first circuit board is arranged in the first accommodation cavity, and a second circuit board is arranged in the second accommodation cavity.

[0017] Among them, one side of the second circuit board in the width direction of the housing extends into the avoidance space; and, the heat-generating elements of the first circuit board are concentratedly arranged at the middle position of the upper surface, and the heat-generating elements of the second circuit board are concentratedly arranged at the part of the upper surface extending into the avoidance space. The inner wall surface of the housing body corresponding to the plurality of auxiliary heat dissipation fins in the avoidance space extends towards the second circuit board and is connected to the heat-generating elements on the second circuit board through heat dissipation glue.

[0018] With the above technical solution, the heat-generating elements of the first circuit board are concentratedly arranged at the middle position of the upper surface, and the heat-generating elements of the second circuit board are concentratedly arranged at the part of the upper surface extending into the avoidance space. The heat-generating elements of the two are staggered in the thickness direction, avoiding excessive heat concentration in the housing, thereby reducing the heat dissipation difficulty. Further, since the heat-generating elements of the second circuit board are concentratedly arranged at the part of the upper surface extending into the avoidance space, the heat dissipated by it is transferred to the plurality of auxiliary heat dissipation fins through the heat dissipation glue, which is beneficial for the plurality of auxiliary heat dissipation fins to quickly diffuse the heat emitted by the second circuit board to the outside.

[0019] An embodiment of the present utility model discloses a controller. Each main heat dissipation fin and each auxiliary heat dissipation fin extend along the width direction of the housing.

[0020] And, the auxiliary heat dissipation fins distributed around the main heat dissipation fin are aligned with the corresponding main heat dissipation fin in the width direction of the housing, and a communicating heat dissipation air duct is formed between the adjacent main heat dissipation fins and the auxiliary heat dissipation fins.

[0021] With the above technical solution, each main heat dissipation fin and each auxiliary heat dissipation fin extend along the width direction of the housing, and the auxiliary heat dissipation fin is aligned with the corresponding main heat dissipation fin in the width direction of the housing. When the fan drives the air flow between the plurality of main heat dissipation fins, it can simultaneously diffuse the heat on the auxiliary heat dissipation fins adjacent to the main heat dissipation fins to the outside through the heat dissipation air duct, thereby improving the heat dissipation efficiency of the auxiliary heat dissipation fins.

[0022] An embodiment of the present utility model discloses a controller. Between the top of the housing and at least a pair of adjacent main heat dissipation fins, heat dissipation ribs parallel to the main heat dissipation fins are further formed; and, relative to the top of the housing, in the thickness direction of the housing, the height of each heat dissipation rib is lower than the height of the main heat dissipation fin.

[0023] By adopting the above technical solution, heat dissipation ribs are arranged between two adjacent main heat dissipation fins, increasing the heat dissipation area of the outer surface, thereby improving the heat dissipation efficiency. And, since the height of each heat dissipation rib is lower than the height of the main heat dissipation fin, it does not increase the space occupied by the controller in the thickness direction.

[0024] An embodiment of the present utility model discloses a controller. In the thickness direction of the housing, the ratio of the height of the main heat dissipation fin to the height of the heat dissipation rib is within the range of 4 - 2:1.

[0025] By adopting the above technical solution, when the ratio of the height of the main heat dissipation fin to the height of the heat dissipation rib in the thickness direction is within the above range, the obstruction effect of the heat dissipation rib on the air flow in the heat dissipation air duct between adjacent main heat dissipation fins is relatively small.

[0026] An embodiment of the present utility model discloses a controller. On the baffle, at the corresponding position of the fan, a plurality of ventilation holes are formed around the central axis of the fan and are arranged in a spiral shape.

[0027] By adopting the above technical solution, the ventilation holes formed at the corresponding position of the fan on the baffle facilitate the fan to discharge the hot air in the heat dissipation air duct between the main heat dissipation fins. And the plurality of ventilation holes surround the central axis of the fan and are arranged in a spiral shape, which plays a guiding role for the air flow, reduces air turbulence, and reduces the air flow noise generated when the fan works.

[0028] An embodiment of the present utility model discloses a controller. A limiting groove is formed on each main heat dissipation fin, and the limiting grooves on a plurality of main heat dissipation fins are linearly continuous to form a wire harness limiting space.

[0029] And, on the baffle, at the corresponding positions of the limiting grooves of the plurality of main heat dissipation fins, adaptively shaped strip-shaped recesses are formed.

[0030] By adopting the above technical solution, the wire harness on the controller can be fixed in the wire harness limiting space formed by the limiting grooves on a plurality of main heat dissipation fins, making the wire harness arrangement of the controller regular. And, under the limiting effect of the strip-shaped recesses formed on the baffle, the assembly stability of the wire harness in the wire harness limiting space is ensured, playing a protective role for the wire harness.

[0031] An embodiment of the present utility model discloses a controller. The controller further includes antennas respectively located on both sides in the width direction of the housing, and wire harnesses extending along the width direction of the housing are respectively arranged inside each antenna.

[0032] Wherein, at a position on the top of the housing adjacent to the plurality of main heat dissipation fins, a plurality of buckles are provided at intervals in the width direction of the housing, and the plurality of buckles constitute a first limiting portion.

[0033] The limiting grooves on the plurality of main heat dissipation fins are aligned in the length direction of the housing to form a second limiting portion.

[0034] Moreover, the wire harness of the antenna is successively clamped by the first limiting portion and the second limiting portion and is connected to a plurality of circuit boards in the housing.

[0035] Adopting this technical solution, the antennas located on both sides in the width direction of the housing can reduce signal interference with each other. Further, by providing a plurality of buckles at intervals in the width direction on the top of the housing, it can ensure that the wire harness of the antenna can extend in the width direction of the housing, so that the distance between the wire harness and the adjacent main heat dissipation fins is equal. On the one hand, it can avoid local overheating of the wire harness, and on the other hand, it makes the wire arrangement on the top of the housing more beautiful. And the wire harness passing through the first limiting portion further extends into the second limiting portion formed by the limiting grooves to ensure that the wire harness of the antenna has good stability on the top of the housing.

[0036] An embodiment of the present utility model discloses a controller. The controller further includes a positioning member. A plurality of connecting flanges bent relative to the baffle are formed on the periphery of the baffle, and one of the connecting flanges is connected to the positioning member.

[0037] Adopting the above technical solution, the controller can be assembled through the connecting flanges on the baffle, and moreover, the positioning member connected by the connecting flanges can play a role in positioning the installation position of the controller, improving the assembly accuracy of the controller.

[0038] An embodiment of the present utility model discloses a vehicle, including any one of the above controllers.

[0039] Adopting the above technical solution, when this kind of controller is assembled on a vehicle, on the premise of ensuring the heat dissipation function of the controller, the controller occupies less installation space in the thickness direction, has a more compact structure, and improves the space utilization rate of the vehicle.

[0040] The beneficial effects of the present utility model are:

[0041] The present utility model discloses a controller, which includes a housing, a fan, and a baffle. The housing is provided with a plurality of accommodation cavities at intervals along its thickness direction, and a circuit board is arranged in each accommodation cavity. When viewed along the thickness direction of the housing, the circumferential side of the upper accommodation cavity has an avoidance space relative to the lower accommodation cavity. The top of the housing forms a plurality of main heat dissipation fins extending along the thickness direction. The fan is arranged on the top of the housing and surrounded by the plurality of main heat dissipation fins. The baffle covers the upper side of the fan and the main heat dissipation fins around the fan and is fixedly connected to the top of the housing. Moreover, a plurality of auxiliary heat dissipation fins extending along the thickness direction are formed on the circumferential side of each accommodation cavity below the uppermost one, passing through the avoidance space of the upper accommodation cavity from the side of the lower accommodation cavity.

[0042] This controller dissipates heat from the circuit board in the uppermost accommodation space through a plurality of main heat dissipation fins, and the heat on the plurality of main heat dissipation fins is quickly diffused to the outside through the airflow blown by the fan. The plurality of accommodation cavities located below dissipate heat by using a plurality of auxiliary heat dissipation fins flush with the main heat dissipation fins. Brief Description of the Drawings

[0043] Figure 1 Exploded schematic diagram of the controller provided by an embodiment of the present utility model;

[0044] Figure 2 Schematic diagram of the structure of the controller (removing part of the structure on one side in the width direction) provided by an embodiment of the present utility model;

[0045] Figure 3 Top view of the controller provided by an embodiment of the present utility model;

[0046] Figure 4 For Figure 3 Cross-sectional view taken along A-A in

[0047] Figure 5 Schematic diagram of the structure of the housing body of the controller (removing part of the structure on one side in the width direction) provided by an embodiment of the present utility model;

[0048] Figure 6 Schematic diagram of the structure of the first circuit board and the second circuit board of the controller provided by an embodiment of the present utility model;

[0049] Figure 7 Exploded schematic diagram of the controller (applied to an automobile) provided by an embodiment of the present utility model;

[0050] Figure 8 Schematic diagram of the structure of the controller (applied to an automobile) provided by an embodiment of the present utility model;

[0051] Figure 9Schematic diagram of the inverted controller (applied to an automobile) provided by an embodiment of the present utility model;

[0052] Figure 10 Top view of the controller (applied to an automobile) provided by an embodiment of the present utility model;

[0053] Figure 11 Bottom view of the controller (applied to an automobile) provided by an embodiment of the present utility model;

[0054] Figure 12 Right view of the controller (applied to an automobile) provided by an embodiment of the present utility model;

[0055] Figure 13 Left view of the controller (applied to an automobile) provided by an embodiment of the present utility model;

[0056] Figure 14 Front view of the controller (applied to an automobile) provided by an embodiment of the present utility model;

[0057] Figure 15 Rear view of the controller (applied to an automobile) provided by an embodiment of the present utility model.

[0058] 10. Controller;

[0059] 100. Housing;

[0060] 110. Upper cover; 111. Main heat dissipation fin; 112. Limit groove; 113. Heat dissipation rib; 114. Buckle;

[0061] 120. Housing body; 121. Auxiliary heat dissipation fin; 122. Heat dissipation glue;

[0062] 130. Base;

[0063] 200. Fan;

[0064] 300. Baffle; 310. Ventilation hole; 320. Strip-shaped recess; 330. Connecting flap; 340. Weight reduction hole;

[0065] 400. Circuit board; 410. First circuit board; 420. Second circuit board; 401. Heating element;

[0066] 500. Positioning member; 600. Fixed bracket; 700. Antenna; 710. Wiring harness; 800. Connecting plug;

[0067] Z. Thickness direction;

[0068] X. Width direction;

[0069] Y. Length direction. Detailed implementation manner

[0070] The controller generates heat when it is working. If the heat cannot be dissipated in time, the temperature of the controller will rise, thus affecting its normal operation. Specifically, according to Joule's law, when the controller is working, current will generate heat when passing through the conductor. The heat is proportional to the square of the current and the resistance of the conductor. The controller contains many electronic components. These components have a certain resistance when working, so heat is generated when current passes through. If the controller works in a high temperature environment for a long time, the excessively high temperature may cause the performance of the electronic components inside the controller to degrade or even be damaged, thus affecting the normal operation of the controller. Therefore, effective heat dissipation is the key to maintaining the normal operating temperature of the controller.

[0071] In the prior art, the heat dissipation structure of the controller has a technical problem that in order to ensure the heat dissipation effect for multiple circuit boards, the controller occupies a large space. To this end, the utility model provides a controller, which includes a shell, a fan and a baffle. The shell is provided with multiple accommodating cavities for arranging circuit boards at intervals along the thickness direction. The top of the shell is provided with multiple main heat dissipation fins. The fan is surrounded by the multiple main heat dissipation fins, and the baffle covers the fan and part of the main heat dissipation fins. The accommodating cavity located above has an avoidance space relative to the accommodating cavity below. The side wall surface of the accommodating space located on the lower side of the shell is provided with multiple auxiliary heat dissipation fins passing through the avoidance space. This controller provides heat dissipation function for the circuit boards in the multiple accommodating spaces, and greatly reduces the space occupied by the controller in the thickness direction.

[0072] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0073] like Figures 1 - 3 As shown, an embodiment of the utility model discloses a controller 10, which includes a shell 100, a fan 200 and a baffle 300. The shell 100 is provided with a plurality of accommodating cavities at intervals along its thickness direction Z. A circuit board 400 is arranged in each accommodating cavity. When viewed along the thickness direction Z of the shell 100, the peripheral side of the accommodating cavity on the upper side has an avoidance space relative to the accommodating cavity on the lower side.

[0074] The top of the shell 100 forms a plurality of main heat dissipation fins 111 extending along the thickness direction Z and arranged side by side. The fan 200 is disposed on the top of the shell 100 and is surrounded by the plurality of main heat dissipation fins 111. The baffle 300 covers the fan 200 and the upper side of the main heat dissipation fins 111 around the fan 200 and is fixedly connected to the top of the shell 100.

[0075] And, if Figure 4As shown, a plurality of auxiliary heat dissipation fins 121 are formed on the periphery of each accommodation cavity located below the uppermost side. The auxiliary heat dissipation fins 121 extend along the thickness direction Z and are arranged side by side through the avoidance space of the upper accommodation cavity from the side of the lower accommodation cavity. Of course, the avoidance space formed by the upper accommodation cavity relative to the lower accommodation cavity is not limited to the position shown in the figure, but can also be any position on any side of the periphery of the upper accommodation cavity, as long as it does not affect the operation and installation of the components and is convenient for the plurality of auxiliary heat dissipation fins 121 to extend. The present utility model does not make specific limitations on this.

[0076] In the housing 100 of this controller 10, a plurality of accommodation cavities are arranged at intervals along the thickness direction Z. A circuit board 400 is arranged in each accommodation cavity, so that the heat generated when the circuit boards 400 in each accommodation cavity work is dispersed in each accommodation cavity, avoiding excessive heat accumulation. Further, a plurality of main heat dissipation fins 111 extending along the thickness direction Z and arranged side by side are formed on the top of the housing 100, which can diffuse the heat in the uppermost accommodation cavity to the outside air. The fan 200 is arranged on the top of the housing 100 and is surrounded by the plurality of main heat dissipation fins 111. Under the obstruction of the upper baffle 300, the fan 200 can drive the air flow between the plurality of main heat dissipation fins 111, thereby diffusing the heat on the main heat dissipation fins 111 to the outside and reducing the temperature in the uppermost accommodation cavity of the housing 100. For each accommodation cavity located below the uppermost side, the heat is cleverly transferred to the outside by the plurality of auxiliary heat dissipation fins 121 extending along the thickness direction Z from the position of the avoidance space, thereby reducing the temperature of the accommodation cavity located below in the housing 100.

[0077] As Figure 4 shown, in the thickness direction Z of the housing 100, the tops of the auxiliary heat dissipation fins 121 are flush with the tops of the main heat dissipation fins 111, and as Figure 1 and Figure 2 shown, the auxiliary heat dissipation fins 121 are distributed around the main heat dissipation fins 111 along the peripheral side of the top of the housing 100.

[0078] The tops of the auxiliary heat dissipation fins 121 of this controller 10 are flush with the tops of the main heat dissipation fins 111. Without increasing the space occupied by the controller 10 in the thickness direction Z, it is ensured that the auxiliary heat dissipation fins 121 have a large heat dissipation area, thereby transferring the heat in the lower accommodation cavity to the outside and ensuring good heat dissipation effects for the circuit boards 400 in the plurality of accommodation spaces.

[0079] Moreover, since the tops of the auxiliary heat dissipation fins 121 and the main heat dissipation fins 111 are flush, heat dissipation can be achieved with the simplest structure, and the top cover design of the controller 10 is more convenient, making the outer shape of the housing 100 more regular and the volume of the controller 10 easier to control, so that it can be adapted to various installation spaces.

[0080] Of course, in another alternative embodiment, the top of the auxiliary heat dissipation fin 121 is lower than the top of the main heat dissipation fin 111. For example, in the thickness direction Z of the housing 100, the top of the auxiliary heat dissipation fin 121 is flush with the top of the housing 100, or the top of the auxiliary heat dissipation fin 121 is lower than the top of the housing 100, or the top of the auxiliary heat dissipation fin 121 is higher than the top of the housing 100 and lower than the top of the main heat dissipation fin 111. Such a structure can also transfer the heat in the lower accommodation cavity to the outside through the auxiliary heat dissipation fin 121 without increasing the space occupied by the controller 10 in the thickness direction Z of the housing 100. Those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make specific limitations in this regard.

[0081] Specifically, such a controller 10 can be applied to fields such as automobiles, household appliances, industrial manufacturing, agricultural machinery, medical equipment, and transportation tools. The present utility model does not make specific limitations in this regard.

[0082] As Figures 1 - 6 shown, in this embodiment, the housing 100 of the controller 10 includes an upper cover 110, a housing body 120, and a base 130 that are sequentially arranged at intervals along its thickness direction Z. The upper cover 110 and the housing body 120 form a first accommodation cavity, and a first circuit board 410 is arranged in the first accommodation cavity. The housing body 120 and the base 130 form a second accommodation cavity. A second circuit board 420 is arranged in the second accommodation cavity.

[0083] Specifically, a plurality of main heat dissipation fins 111 extending along the width direction X are formed on the outer surface of the housing body 120, and the plurality of main heat dissipation fins 111 are arranged side by side along the length direction Y. Regarding the number of the main heat dissipation fins 111, it can be two, five, six, seven, ten, fifteen or other numbers. The present utility model does not make specific limitations in this regard.

[0084] As Figure 3 shown, outside the upper cover 110, a fan 200 surrounded by heat exchange of a plurality of main heat dissipation fins 111 is provided, and a baffle 300 covers the fan 200 and the main heat dissipation fins 111 around the fan 200. It should be noted that in this embodiment, both the baffle 300 and the fan 200 can be fixed to the upper cover 110 by fastening bolts. Of course, regarding the connection manner of the fan 200 and the baffle 300 to the upper cover 110, this embodiment does not make specific limitations in this regard.

[0085] The upper cover 110 forms a plurality of main heat dissipation fins 111 that extend in the thickness direction Z and are arranged side by side, which can dissipate the heat in the first accommodation cavity to the outside air. Moreover, under the obstruction of the upper side baffle 300, the fan 200 can drive the air flow between the plurality of main heat dissipation fins 111, thereby dissipating the heat on the main heat dissipation fins 111 to the outside, reducing the temperature in the first accommodation cavity, and ensuring the working environment of the first circuit board 410.

[0086] In one embodiment, as Figure 3 shown, the baffle 300 partially covers the fan 200 and the main heat dissipation fins 111 around the fan 200. The part of the main heat dissipation fins 111 covered by the baffle 300 and the baffle 300 form a heat dissipation air duct. The air flow stirred by the fan 200 discharges the hot air between the covered main heat dissipation fins 111 along the heat dissipation air duct, while the other part of the main heat dissipation fins 111 not covered by the baffle 300 directly dissipates the heat to the outside. When the fan 200 stops working due to a fault, it is avoided that the heat between the main heat dissipation fins 111 is completely accumulated in the heat dissipation air duct between the main heat dissipation fins 111. The diversity of heat dissipation methods is increased.

[0087] Of course, in another alternative embodiment, the baffle 300 completely covers the fan 200 and the main heat dissipation fins 111 around the fan 200, so that heat dissipation air ducts are formed between the baffle 300 and the plurality of main heat dissipation fins 111. Thus, the hot air between the main heat dissipation fins 111 is discharged along the heat dissipation air duct by using the air flow stirred by the fan 200. Moreover, the baffle 300 plays a heat insulation role and can prevent the heat of the main heat dissipation fins 111 from being directly transferred to the components connected to the controller 10.

[0088] Moreover, as Figure 2 and Figure 3 shown, at the corresponding position of the baffle 300 where the fan 200 is located, a plurality of ventilation holes 310 are formed that surround the central axis of the fan 200 and are arranged in a spiral shape, which is convenient for the fan 200 to discharge the hot air in the heat dissipation air duct between the main heat dissipation fins 111. And the plurality of ventilation holes 310 surround the central axis of the fan 200 and are arranged in a spiral shape, which plays a guiding role for the air flow, reduces the air turbulence, and reduces the air flow noise generated when the fan 200 works. Regarding the specific structure of the ventilation holes 310, the present utility model does not make specific limitations thereon.

[0089] Furthermore, as Figure 2 and Figure 3As shown, two weight-reducing holes 340 are formed in the baffle 300. On the one hand, reducing the mass of the baffle 300 is beneficial to the light-weighting of the controller 10. On the other hand, it is beneficial to directly dissipate the heat on the multiple main heat dissipation fins 111 to the outside. Regarding the shape of the weight-reducing holes 340, those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make specific limitations thereon.

[0090] And, as Figure 1 and Figure 4 shown, when looking along the thickness direction Z of the housing 100, one side of the first accommodation cavity in the width direction X of the housing 100 is recessed inward to form an avoidance space relative to the second accommodation cavity. On the outer surface of the housing body 120 above the avoidance space, a plurality of auxiliary heat dissipation fins 121 extending in the width direction X are formed. Regarding the number of the auxiliary heat dissipation fins 121, it can be two, three, four, five or other numbers, and the present utility model does not make specific limitations thereon.

[0091] The heat in the second accommodation cavity is transferred to the outside by using the plurality of auxiliary heat dissipation fins 121 extending along the thickness direction Z from the position of the avoidance space, thereby reducing the temperature of the second accommodation cavity and ensuring the working environment of the second circuit board 420.

[0092] It should be noted that the first accommodation cavity forms an avoidance space relative to the second accommodation cavity in the housing 100, which is not limited to the position shown in the figure, and can also be any position on the circumferential side of the first accommodation cavity, as long as it does not affect the operation and installation of the components and is convenient for the plurality of auxiliary heat dissipation fins 121 to extend, and the present utility model does not make specific limitations thereon.

[0093] This structure uses the upper cover 110 and the housing body 120 to form the first accommodation cavity, and the housing body 120 and the base 130 to form the second accommodation cavity. An accommodation cavity is formed between the two structures. Only need to place the circuit board 400 in one of the components, and then assemble the two opposite components together, then the assembly step of assembling any circuit board 400 into the corresponding accommodation cavity can be completed, which simplifies the assembly process.

[0094] And, as Figure 1 and Figure 4As shown, the heating elements 401 of the first circuit board 410 are centrally arranged at the middle position of the upper surface, and the heating elements 401 of the second circuit board 420 are centrally arranged at the part of the upper surface extending into the avoidance space. The heating elements 401 of both are staggered in the thickness direction Z, avoiding excessive heat concentration in the housing 100, thereby reducing the difficulty of heat dissipation. Further, since the heating elements 401 of the second circuit board 420 are centrally arranged at the part of the upper surface extending into the avoidance space, the inner wall surface of the housing body 120 corresponding to the plurality of auxiliary heat dissipation fins 121 in the avoidance space extends towards the second circuit board 420 and is connected to the heating elements 401 on the second circuit board 420 through the heat dissipation glue 122. The heat dissipated by the heating elements 401 of the second circuit board 420 is transferred to the plurality of auxiliary heat dissipation fins 121 through the heat dissipation glue 122 at a relatively short distance, which is conducive to the plurality of auxiliary heat dissipation fins 121 quickly diffusing the heat emitted by the second circuit board 420 to the outside. It should be noted that the heating element 401 refers to an element that converts electrical energy into heat energy, such as an electric heating wire, a thermistor, an electric heating film, and a ceramic heating sheet. Of course, the heating element 401 not only refers to an element specifically used to convert electrical energy into heat energy, but also includes elements such as power semiconductor elements, resistors, integrated circuits, and capacitors that generate heat during operation. In this embodiment, the heating element 401 is not specifically limited.

[0095] It should be noted that, as Figure 2 shown, inside the controller 10, the first circuit board 410 and the second circuit board 420 are electrically connected to each other and to the outside through wire harnesses. Therefore, wire harnesses are distributed outside the housing 100. In order to make the arrangement of the wire harnesses regular, a limiting groove 112 is formed on each main heat dissipation fin 111, and the limiting grooves 112 on the plurality of main heat dissipation fins 111 are linearly continuous to form a wire harness limiting space.

[0096] And, as Figure 1 and Figure 2 shown, on the baffle 300, at the positions corresponding to the limiting grooves 112 of the plurality of main heat dissipation fins 111, a matching strip-shaped recess 320 is formed.

[0097] Specifically, the wire harness on the controller 10 can be fixed in the wire harness limiting space formed by the limiting grooves 112 on the plurality of main heat dissipation fins 111, making the wire harness arrangement of the controller 10 regular. And, under the limiting action of the strip-shaped recess 320 formed on the baffle 300, the assembly stability of the wire harness in the wire harness limiting space is ensured, playing a protective role for the wire harness.

[0098] The heat dissipation structure on the controller 10 will be described in detail below.

[0099] In this embodiment, as Figure 4As shown, each main heat dissipation fin 111 and each auxiliary heat dissipation fin 121 extend along the width direction X of the housing 100.

[0100] And, as Figure 2 and Figure 4 shown, the auxiliary heat dissipation fins 121 distributed around the main heat dissipation fin 111 are aligned with the corresponding main heat dissipation fin 111 in the width direction X of the housing 100, and a connected heat dissipation air duct is formed between the adjacent main heat dissipation fins 111 and the auxiliary heat dissipation fins 121.

[0101] Specifically, each main heat dissipation fin 111 and each auxiliary heat dissipation fin 121 extend along the width direction X of the housing 100, and the auxiliary heat dissipation fin 121 is aligned with the corresponding main heat dissipation fin 111 in the width direction X of the housing 100. When the fan 200 drives the air flow between the multiple main heat dissipation fins 111, it can together diffuse the heat on the auxiliary heat dissipation fin 121 adjacent to the main heat dissipation fin 111 to the outside through the heat dissipation air duct, thereby improving the heat dissipation efficiency of the auxiliary heat dissipation fin 121.

[0102] It should be noted that, as Figure 4 shown, when the auxiliary heat dissipation fin 121 is aligned with the corresponding main heat dissipation fin 111 in the width direction X of the housing 100, the baffle 300 covers part of the tops of the multiple auxiliary heat dissipation fins.

[0103] Of course, the extending direction of the main heat dissipation fin 111 is not limited to the width direction X in the above embodiment, and it can also extend along the length direction Y of the housing 100. It can also be that the main heat dissipation fins 111 on both sides of the fan 200 along the width direction X extend along the width direction X, and the main heat dissipation fins 111 on both sides of the fan 200 along the length direction Y extend along the length direction Y. Regarding the structure of the multiple main heat dissipation fins 111 provided on the upper cover 110, those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make specific limitations. It should be noted that regarding the setting on the housing body 120

[0104] For the sake of convenience of description, as Figures 7 - 15 shown, the controller 10 is described by taking an automobile as an example. Of course, there are many controllers 10 equipped on the automobile, such as those for the engine and power transmission centralized control system, chassis electronic controller 10, body electronic controller 10, and in-vehicle entertainment and information controller 10, etc., and the present utility model does not make specific limitations either.

[0105] Furthermore, in this embodiment, as Figure 12 and Figure 13As shown, in order to improve the heat dissipation effect of the upper cover 110, heat dissipation ribs 113 extending parallel to the main heat dissipation fins 111 are further formed between every two adjacent main heat dissipation fins 111 on the outer surface of the upper cover 110; and, relative to the top of the housing 100, in the thickness direction Z of the housing 100, the height of each heat dissipation rib 113 is lower than the height of the main heat dissipation fin 111. It should be noted that the number of the heat dissipation ribs 113 can be one, two, three, four or other numbers, and the present embodiment does not make specific limitations on this.

[0106] Specifically, by arranging the heat dissipation ribs 113 between two adjacent main heat dissipation fins 111, the heat dissipation area of the outer surface is increased, thereby improving the heat dissipation efficiency. And, since the height of each heat dissipation rib 113 is lower than the height of the main heat dissipation fin 111, the space occupied by the controller 10 in the thickness direction Z will not be increased.

[0107] More specifically, in the present embodiment, in the thickness direction Z of the housing 100, the ratio of the height of the main heat dissipation fin 111 to the height of the heat dissipation rib 113 is within the range of 4 - 2:1, specifically, it can be 4:1, 3.5:1, 3.2:1, 2.4:1, 2:1 or other ratios within the above range. When the height ratio of the main heat dissipation fin 111 to the heat dissipation rib 113 in the thickness direction Z is within the above range, the hindrance effect of the heat dissipation rib 113 on the air flow in the heat dissipation air duct between two adjacent main heat dissipation fins 111 is small, and a "concave" - shaped flow channel is formed between two adjacent main heat dissipation fins 111, which is beneficial to the air circulation.

[0108] And, in order to achieve better heat dissipation, the distance between two adjacent main heat dissipation fins 111 is not less than one - third of the height of the main heat dissipation fin 111. Specifically, the distance between two adjacent main heat dissipation fins 111 can be one - third, one - half, three - fourths, etc. of the height of the main heat dissipation fin 111, and the present utility model does not make specific limitations on this.

[0109] In the present embodiment, as shown in FIG. 2, the controller 10 further includes a positioning member 500. A plurality of connecting flaps 330 bent relative to the baffle 300 are formed on the periphery of the baffle 300, and one of the connecting flaps 330 is connected to the positioning member 500. It should be noted that, as Figure 7 shown, a buffer member is provided at the end of the positioning member 500 for transmitting the vibration to the controller 10, and the buffer member can be a commonly used rubber grommet, etc. in the art.

[0110] Specifically, the controller 10 can be assembled through the connecting flap 330 on the baffle 300, and the positioning member 500 connected through the connecting flap 330 can play a role in positioning the installation position of the controller 10, improving the assembly accuracy of the controller 10.

[0111] Further, as Figure 9 , Figures 12 - 13 shown, in order to improve the assembly stability of the controller 10, the controller 10 further includes a fixing bracket 600. The fixing bracket 600 is arranged outside the housing 100 and cooperates with a plurality of connecting flaps 330 on the baffle 300 to realize the assembly of the controller 10. Of course, regarding the specific structure of the fixing bracket 600, it is not limited to the form in this embodiment only, and can also be designed according to the actual situation and specific requirements. This embodiment does not make specific limitations on this.

[0112] And, as Figure 14 and Figure 15 shown, on both sides of the shell body 120 of the controller 10 in the width direction X, antennas 700 are provided. The antennas 700 are used to receive or transmit signals, and a wire harness 710 extending along the width direction of the housing 100 is respectively arranged inside each antenna 700. Regarding the model and specifications of the antennas 700, those skilled in the art can design according to the situation and specific requirements. This embodiment does not make specific limitations on this.

[0113] As Figure 7 shown, at the part of the upper cover 110 of the housing 100 adjacent to the plurality of main heat dissipation fins 111, a plurality of buckles 114 arranged at intervals along the width direction X of the housing 100 are provided. The plurality of buckles 114 constitute a first limiting part. Regarding the number of the buckles 114, it can be two, three, four, five or other numbers. Those skilled in the art can design according to the actual situation and specific requirements. This embodiment does not make specific limitations on this.

[0114] The limiting grooves 112 on the plurality of main heat dissipation fins 111 are aligned along the length direction Y of the housing 100 to form a second limiting part.

[0115] And, the wire harness 710 of the antenna 700 is successively clamped by the first limiting part and the second limiting part and is connected to the first circuit board 410 and the second circuit board 420 in the housing 100.

[0116] Specifically, the antennas 700 respectively located on both sides of the housing 100 in the width direction X can reduce the signal interference between each other. Further, by providing a plurality of buckles 114 arranged at intervals along the width direction X of the upper cover 110 of the housing 100, it can ensure that the wire harness 710 of the antenna 700 can extend along the width direction X of the housing 100, ensuring that the distance between the wire harness 710 and the adjacent main heat dissipation fins 111 is equal. On the one hand, it can avoid local overheating of the wire harness 710, and on the other hand, it makes the wire arrangement on the upper cover 110 beautiful. And the wire harness 710 passing through the first limiting part further extends into the second limiting part formed by the limiting grooves 112 to ensure that the wire harness 710 of the antenna 700 has good stability on the upper cover 110 of the housing 100.

[0117] In addition, the first limiting portion can ensure that the wire harness 710 extends along the width direction X of the housing 100, while the second limiting portion can ensure that the wire harness 710 extends along the length direction Y of the housing 100, thereby meeting the limiting requirements for two types of wire routing. Of course, regarding the arrangement of the wire harness 710, it is not limited to the manner in the above embodiment. Those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make specific limitations in this regard.

[0118] As Figure 8 and Figure 14 shown, a connection plug 800 is provided on one side of the housing body 120 in the length direction Y. The connection plug 800 is electrically connected to the first circuit board 410 and the second circuit board 420. The wire harness of an external electrical component can be connected to the circuit board 400 in the controller 10 through the connection plug 800.

[0119] Of course, the controller 10 is not limited to the structure in the above embodiment. The housing 100 of the controller 10 can also be provided with three accommodation cavities at intervals along the thickness direction Z, and a circuit board 400 is provided in each accommodation cavity. And, for the accommodation cavity located on the upper side, one side edge along the width direction X of the housing 100 has an avoidance space relative to the two accommodation cavities located in the middle and on the lower side, and the two accommodation cavities located on the upper side and in the middle have an avoidance space compared to the accommodation cavity on the lower side. The auxiliary heat dissipation fins 121 formed on the accommodation cavity located in the middle and the accommodation space on the lower side are staggered in the length direction Y of the housing 100, and the length of the auxiliary heat dissipation fins 121 on the lower side is longer than that of the heat dissipation fins in the middle and the main heat dissipation fins 111 on the upper side. The length of the auxiliary heat dissipation fins 121 in the middle is longer than that of the main heat dissipation fins 111 on the upper side, that is, the tops of the auxiliary heat dissipation fins 121 are flush with the tops of the main heat dissipation fins 111. Of course, it can also be set as: for the accommodation cavity located on the upper side, one side edge along the width direction X of the housing 100 has an avoidance space relative to the accommodation cavity located in the middle, and for the accommodation cavity located on the upper side, the other side edge along the width direction X of the housing 100 has an avoidance space relative to the accommodation cavity located on the lower side. The present utility model does not make specific limitations in this regard.

[0120] This embodiment also provides an automobile including the above-mentioned controller 10. This kind of controller 10 occupies a smaller installation space in the thickness direction Z while ensuring the heat dissipation function, has a more compact structure, and improves the space utilization rate of the automobile.

[0121] It should be noted that, in addition to the implementation manners of the present utility model described in the above specific embodiments, those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the present utility model is introduced in combination with preferred embodiments, this does not mean that the features of this utility model are limited to this implementation manner. On the contrary, the purpose of introducing the utility model in combination with the implementation manner is to cover other alternatives or modifications that may extend based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details are included in the above description, and the present utility model can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of the present utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0122] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0123] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model 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 utility model.

[0124] Terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0125] In the description of this embodiment, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0126] Although the present utility model has been illustrated and described by referring to some preferred embodiments thereof, those of ordinary skill in the art should understand that the above content is a further detailed description of the present utility model in connection with specific embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present utility model.

Claims

1. A controller, characterized in that, It includes a housing, a fan and a baffle. The housing is provided with a plurality of accommodation cavities at intervals along its thickness direction. A circuit board is arranged in each accommodation cavity. When viewed along the thickness direction of the housing, the periphery of the accommodation cavity located on the upper side has an avoidance space relative to the accommodation cavity located on the lower side; The top of the housing forms a plurality of main heat dissipation fins extending along the thickness direction and arranged side by side. The fan is arranged on the top of the housing and surrounded by the plurality of main heat dissipation fins. The baffle covers the upper side of the fan and the main heat dissipation fins around the fan and is fixedly connected to the top of the housing; and A plurality of auxiliary heat dissipation fins extending along the thickness direction and arranged side by side are formed on the periphery of each accommodation cavity located below the uppermost side. The auxiliary heat dissipation fins pass through the avoidance space of the accommodation cavity on the upper side from the side of the accommodation cavity on the lower side.

2. The controller according to claim 1, characterized in that, In the thickness direction of the housing, the tops of the auxiliary heat dissipation fins are flush with the tops of the main heat dissipation fins, and the auxiliary heat dissipation fins are distributed around the main heat dissipation fins along the peripheral side of the top of the housing.

3. The controller according to claim 2, wherein, The housing includes an upper cover, a housing body and a base that are sequentially arranged at intervals along its thickness direction. The upper cover and the housing body form a first accommodation cavity, and the housing body and the base form a second accommodation cavity; And When viewed along the thickness direction of the housing, one side of the first accommodation cavity in the width direction of the housing is recessed inward, forming the avoidance space relative to the second accommodation cavity.

4. The controller according to claim 3, wherein A first circuit board is arranged in the first accommodation cavity, and a second circuit board is arranged in the second accommodation cavity; wherein One side of the second circuit board in the width direction of the housing extends into the avoidance space; and The heating elements of the first circuit board are concentratedly arranged at the middle position of the upper surface, and the heating elements of the second circuit board are concentratedly arranged at the part of the upper surface extending into the avoidance space. The inner wall surface of the housing body corresponding to the plurality of auxiliary heat dissipation fins above the avoidance space extends towards the second circuit board and is connected to the heating elements on the second circuit board through heat dissipation glue.

5. The controller according to claim 3, wherein Each of the main heat dissipation fins and each of the auxiliary heat dissipation fins extends along the width direction of the housing; and The auxiliary heat dissipation fins distributed around the main heat dissipation fins are aligned with the corresponding main heat dissipation fins in the width direction of the housing, and a communicating heat dissipation air duct is formed between adjacent main heat dissipation fins and the auxiliary heat dissipation fins.

6. The controller according to claim 1, wherein Heat dissipation ribs parallel to the main heat dissipation fins are further formed between the top of the housing and at least a pair of adjacent main heat dissipation fins; and, relative to the top of the housing, in the thickness direction of the housing, the height of each heat dissipation rib is lower than the height of the main heat dissipation fin.

7. The controller according to claim 6, wherein In the thickness direction of the housing, the ratio of the height of the main heat dissipation fin to the height of the heat dissipation rib is in the range of 4 to 2:

1.

8. The controller according to any one of claims 1 to 7, characterized in that, On the baffle plate, at positions corresponding to the fan, a plurality of ventilation holes are formed, which surround the central axis of the fan and are arranged in a spiral shape.

9. The controller according to any one of claims 1 to 7, characterized in that, Each of the main heat dissipation fins is formed with a limiting groove, and the limiting grooves on the plurality of main heat dissipation fins are linearly continuous to form a wire harness limiting space; and On the baffle plate, at positions corresponding to the limiting grooves of the plurality of main heat dissipation fins, a matching strip-shaped recess is formed.

10. The controller according to claim 9, characterized in that, The controller further includes antennas respectively located on both sides in the width direction of the housing, and a wire harness extending along the width direction of the housing is respectively arranged inside each antenna; wherein, On the top of the housing, at a position adjacent to the plurality of main heat dissipation fins, a plurality of buckles spaced along the width direction of the housing are provided, and the plurality of buckles constitute a first limiting portion; The limiting grooves on the plurality of main heat dissipation fins are aligned along the length direction of the housing to constitute a second limiting portion, and The wire harness of the antenna is successively clamped by the first limiting portion and the second limiting portion and is connected to a plurality of circuit boards in the housing.

11. The controller according to any one of claims 1 to 10, characterized in that, The controller further includes a positioning member, and a plurality of connecting flaps bent relative to the baffle plate are formed on the periphery of the baffle plate, and one of the connecting flaps is connected to the positioning member.

12. An automobile, characterized in that, Comprising the controller according to any one of claims 1 to 11.

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