A controller structure for thermal management
By employing a closed groove and annular sealing ring design in the thermal management controller of electric vehicles, combined with an aluminum alloy housing, the problem of poor sealing effect is solved, achieving better sealing and heat dissipation performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO LVMAI INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-07
AI Technical Summary
In the existing technology, the thermal management controller structure of electric vehicles has poor sealing performance, allowing impurities such as dust and water vapor to easily enter, corrode the PCBA assembly, and affect the normal operation of the equipment.
It adopts a closed groove and annular sealing ring design, and achieves sealing through the connection between the base plate and the shell. Combined with the aluminum alloy shell and base plate, it enhances the sealing and heat dissipation effect.
It improves the sealing effect, prevents impurities from entering, extends the equipment life, has a compact structure, small size, and excellent heat dissipation performance.
Smart Images
Figure CN224473550U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal management technology, and specifically to a controller structure for thermal management. Background Technology
[0002] Electric vehicles (EVs) are powered by an onboard power source, using an electric motor to drive the wheels. In current technology, during prolonged driving, the temperature of some EV components can rise, necessitating thermal management for high-power, heat-generating components. By collecting the temperature of the controlled components through corresponding sensors, the thermal management integrated module's intelligent actuator uses water circulation cooling or PTC heating to control the heat of the controlled components, ensuring they operate within a specified temperature range for optimal performance.
[0003] For example, the Chinese utility model patent disclosed in patent application number CN202420884948.7 (publication number CN222485059U), entitled "An Intelligent Actuator for an Integrated Module of Automotive Thermal Management," includes a lower housing, an upper housing at the upper end of the lower housing, a PCBA assembly inside the lower housing, a sealing gasket between the upper and lower housings for improving sealing, multiple heat sinks on the upper housing, and thermal grease on the PCBA assembly in contact with the upper housing. This can accelerate heat dissipation, slow down circuit aging, extend service life, improve sealing, prevent the entry of dust, water vapor, and other impurities, and ensure the normal operation of the actuator.
[0004] However, this patent, from its... Figure 1 , 2 As can be seen, the bottom edge of the upper shell and the top edge of the lower shell are not closed annular structures. Figure 1 It is clearly visible that there are arc-shaped notches on the edges of both the upper and lower housings. The arc-shaped notches of the upper and lower housings are connected to form a through hole for the electrical interface of the PCBA to pass through. In this way, the sealing gasket is also disconnected instead of a closed ring. Ultimately, this results in poor sealing at the through hole where the electrical interface passes through, and dust, water vapor and other impurities can easily enter, thus corroding the PCBA assembly. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a thermal management controller structure with good sealing effect, based on the current state of the technology.
[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a controller structure for thermal management, including a control board and a housing, wherein the control board is placed in the inner cavity of the housing, and the electrical interface of the control board protrudes from the housing, characterized in that: the housing includes a shell with an open side and a bottom plate covering the open side of the shell, the bottom plate and the shell together form the inner cavity, and the side wall of the shell is provided with a through hole for the electrical interface of the control board to pass through, the through hole not penetrating the edge of the open side of the shell;
[0007] The base plate has a closed groove along its circumference, and an annular sealing ring is embedded in the groove. The two shells are sealed together by the sealing ring.
[0008] Preferably, the base plate and the housing are connected by a connector located outside the groove. The connector will not damage the seal of the sealing ring, and because the connector connects the base plate and the housing, the sealing ring is compressed, resulting in a better sealing effect.
[0009] Preferably, the connector is a screw, which is low in cost and readily available.
[0010] To facilitate the connection between the base plate and the housing using screws, a connecting post extends upward from the upper surface of the base plate, and a laterally extending connecting plate is formed on the outer peripheral wall of the housing. The connecting plate and the connecting post are connected by screws. The connecting post not only serves to connect the screws but also strengthens the base plate.
[0011] Preferably, the base plate has reinforcing ribs on its wall surface to enhance its strength and resistance to deformation.
[0012] Preferably, there are at least two reinforcing ribs, and at least two of the reinforcing ribs are arranged in a cross pattern, which provides good reinforcement to the base plate.
[0013] To facilitate the installation of perforations in the shell and minimize the volume of the box, the interior of the shell is divided into a first chamber and a second chamber horizontally. The second chamber is taller than the first chamber. The perforations are located on the side wall of the corresponding second chamber of the upper shell. The shell is divided into a first chamber and a second chamber with different heights; the second chamber is taller to allow for the perforations, while the first chamber is shorter to minimize the volume of the box.
[0014] To improve heat dissipation, heat dissipation ribs are provided on the top wall of the upper shell corresponding to the first chamber.
[0015] Preferably, both the housing and the base plate are made of aluminum alloy, which has better heat dissipation performance compared to plastic.
[0016] Compared with the prior art, the advantages of this utility model are as follows: The box body of this utility model is formed by joining a bottom plate and a shell with an open side. Compared with the prior art, which is formed by joining two shells with an open side, the side wall of the shell of this utility model can be made higher, so that the perforation is only set on the shell and does not penetrate the open edge of the shell. In this way, the open edge of the shell is a closed ring. A closed groove can also be set on the bottom plate, so that the bottom plate and the shell can be sealed by the annular closed sealing ring, reducing the sealing dead angle.
[0017] Furthermore, the way the base plate and the shell fit together makes the overall structure of the box compact and small in size. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0019] Figure 2 for Figure 1 A schematic diagram of the structure from another direction;
[0020] Figure 3 for Figure 1 A schematic diagram of the structure from another direction;
[0021] Figure 4 for Figure 1 A schematic diagram of the decomposition process;
[0022] Figure 5 for Figure 1 A sectional view. Detailed Implementation
[0023] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.
[0024] In the description of this utility model, it should be understood that, unless otherwise stated, "multiple" means two or more, and the terms "upper," "lower," "left," "right," "top," "bottom," "front," "rear," etc., indicate the orientation or positional relationship based on the direction or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] In the description of this utility model patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an adhesive connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model patent based on the specific circumstances.
[0026] like Figures 1-5 As shown, the thermal management controller structure of this preferred embodiment includes a control board 1 and a housing A. The housing A includes a shell 2 with an open side and a bottom plate 3 covering the open side of the shell 2. The bottom plate 3 and the shell 2 together form an inner cavity 30. The control board 1 is placed in the inner cavity 30 of the housing A. The control board 1 can be connected to the bottom plate 3 or the shell 2 by screws. The side wall of the shell 2 is provided with a through hole 20 for the electrical interface 11 of the control board 1 to pass through, and the through hole 20 does not penetrate the edge of the open side of the shell 2.
[0027] A closed groove 31 is provided around the base plate 3, and an annular closed sealing ring 4 is embedded in the groove 31. The two shells 2 are sealed together by the sealing ring 4.
[0028] Box A is formed by joining a base plate 3 and a shell 2 with an open side. Compared with the prior art where box A is formed by joining two shells with an open side, the side wall of shell 2 in this embodiment can be made higher, so that the perforation 20 is only set on shell 2 and does not penetrate the open edge of shell 2. Thus, the open edge of shell 2 is a closed ring. A closed groove 31 can also be set on the base plate 3, so that the base plate 3 and shell 2 can be sealed by the annular closed sealing ring 4, reducing the sealing dead angle. After a 48-hour water immersion test, no water entered the interior of box A in this embodiment.
[0029] In addition, the way the base plate 3 and the shell 2 are fitted together makes the overall structure of the box A compact, small in size and space-saving. The volume of the box in this embodiment is 138.5mm×123.5mm×45mm. Furthermore, the assembly of the various components of the thermal management controller structure in this embodiment is simple and easy to manufacture.
[0030] The base plate 3 and the housing 2 are connected by a connector 5. The connector 5 is located outside the groove 31. The connector 5 will not damage the seal of the sealing ring 4. Moreover, because the connector 5 connects the base plate 3 and the housing 2, the sealing ring 4 is compressed, resulting in a better sealing effect.
[0031] In this embodiment, the connector 5 is a screw, which is low in cost and readily available. A connecting post 32 extends upward from the upper surface of the base plate 3, and a laterally extending connecting plate 21 is formed on the outer peripheral wall of the housing 2. The connecting plate 21 and the connecting post 32 are connected by screws. The connecting post 32 not only serves to connect the screws but also strengthens the base plate 3.
[0032] There are multiple connecting posts 32, which are spaced apart circumferentially along the base plate 3. Correspondingly, there are also multiple connecting plates 21 and screws. In this embodiment, there are four connecting posts 32.
[0033] The base plate 3 has reinforcing ribs 33 on its wall surface to enhance its strength and resistance to deformation. Preferably, there are at least two reinforcing ribs 33, and at least two of them are arranged intersectingly, which provides better reinforcement of the base plate 3. In this embodiment, there are two reinforcing ribs 33, which intersect to form an X shape.
[0034] The interior of the shell 2 is divided into a first chamber 22 and a second chamber 23 along the horizontal direction. The height of the second chamber 23 is higher than that of the first chamber 22. A perforation 20 is provided on the side wall of the corresponding second chamber 23 of the upper shell 2. The shell 2 is divided into a first chamber 22 and a second chamber 23 with different heights. The second chamber 23 is taller to allow for the perforation 20, while the first chamber 22 is shorter to minimize the volume of the box A.
[0035] The shell 2 has heat dissipation fins 24 on the top wall corresponding to the first chamber 22.
[0036] Both the casing 2 and the base plate 3 are made of aluminum alloy, which provides better heat dissipation compared to plastic.
Claims
1. A controller structure for thermal management, comprising a control board (1) and a housing (A), wherein the control board (1) is placed in the inner cavity (30) of the housing (A), and the electrical interface (11) of the control board (1) extends out of the housing (A), characterized in that: The box (A) includes a shell (2) with an open side and a bottom plate (3) covering the open side of the shell (2). The bottom plate (3) and the shell (2) together form the inner cavity (30). The side wall of the shell (2) is provided with a through hole (20) for the electrical interface (11) of the control board (1) to pass through. The through hole (20) does not penetrate the edge of the open side of the shell (2). The base plate (3) has a closed groove (31) around its circumference, and a ring-shaped closed sealing ring (4) is embedded in the groove (31). The two shells (2) are sealed together by the sealing ring (4).
2. The controller structure for thermal management according to claim 1, characterized in that: The base plate (3) and the shell (2) are connected by a connector (5) located on the outside of the groove (31).
3. The controller structure for thermal management according to claim 2, characterized in that: The connector (5) is a screw.
4. The controller structure for thermal management according to claim 3, characterized in that: A connecting post (32) extends upward from the upper surface of the base plate (3), and a transversely extending connecting plate (21) is formed on the outer peripheral wall of the shell (2). The connecting plate (21) and the connecting post (32) are connected by screws.
5. The controller structure for thermal management according to claim 1, characterized in that: The bottom plate (3) is provided with reinforcing ribs (33) on its wall surface.
6. The controller structure for thermal management according to claim 5, characterized in that: There are at least two reinforcing ribs (33), and at least two of the reinforcing ribs (33) are arranged in a cross pattern.
7. The controller structure for thermal management according to any one of claims 1 to 6, characterized in that: The interior of the shell (2) is divided into a first chamber (22) and a second chamber (23) in the horizontal direction. The height of the second chamber (23) is higher than that of the first chamber (22). The perforation (20) is provided on the side wall of the corresponding second chamber (23) of the upper shell (2).
8. The controller structure for thermal management according to claim 7, characterized in that: The upper shell (2) is provided with heat dissipation ribs (24) on the top wall corresponding to the first chamber (22).
9. The controller structure for thermal management according to any one of claims 1 to 6, characterized in that: Both the shell (2) and the base plate (3) are made of aluminum alloy.