Waterproof controller for new energy automobile
By designing the raised connection and sealed and embedded connectors in the waterproof controller for new energy vehicles, the problem of water seepage of the engine controller in humid environments is solved, and a more compact and waterproof structure is achieved to ensure the normal operation of the engine.
Patent Information
- Application Number
- CN202422004250.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-19
AI Technical Summary
Existing engine controllers are prone to water seepage problems in humid environments, causing electronic devices to be damp and short-circuited, affecting the normal operation of the engine.
A waterproof controller for new energy vehicles has been designed, with a raised connection part on one side of the housing, and the connector is sealed and embedded with the installation hole to form a closed environment to prevent the entry of external humid air.
It improves the structural compactness and waterproof sealing performance of the engine controller to prevent water from infiltration and damage the main circuit board, ensuring the normal operation of the engine.
Smart Images
Figure CN223024736U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of engine controllers, and particularly relates to a waterproof controller for new energy vehicles. Background Art
[0002] The controller in a new energy vehicle can switch between two closed-loop control modes of speed and torque according to control needs, and has built-in fault detection and processing functions such as overvoltage and overcurrent. The controller converts the direct current of the power battery of the new energy electric vehicle into alternating current for driving the motor, and communicates with the vehicle controller through a communication system to control the speed and power required by the vehicle.
[0003] In the prior art, electronic devices are provided inside the controller. The interfaces of the controller are arranged on one side of the housing and connected to the internal electronic devices to form a flat structure. This structural form occupies a large space inside the engine and is not conducive to the spatial layout in the engine compartment. Since it is difficult to form a reliable seal between the interfaces and the housing, water is likely to seep into the housing from the interface position in a humid environment, causing the electronic devices to be damp and short-circuited, resulting in abnormal operation of the engine controller, which urgently needs to be improved. Summary of the Utility Model
[0004] An embodiment of the utility model provides a waterproof controller for new energy vehicles, aiming to improve the structural compactness and waterproof and sealing performance of the engine controller.
[0005] To achieve the above object, the technical solution adopted by the utility model is: to provide a waterproof controller for new energy vehicles, including a housing, a main circuit board encapsulated in the housing, and a plurality of connectors; wherein, one side of the housing has a connecting portion protruding from its upper surface, and a plurality of mounting holes are spacedly distributed on the surface of the connecting portion facing the other side of the housing; each connector corresponds to each mounting hole one by one and is hermetically embedded; wherein, each connector is electrically connected to the main circuit board and is respectively used for plugging and matching with the wire harness plug of the engine control wire harness.
[0006] In a possible implementation manner, the housing includes a first substrate, a second substrate and a top cover; the upper surface of the first substrate loads the main circuit board; the second substrate is sealed above the first substrate and forms a cavity for accommodating the main circuit board between the second substrate and the first substrate. The part of the second substrate directly below the connecting portion forms a clearance area, and the clearance area is used to communicate each mounting hole with the cavity; the top cover is sealed on the first substrate and the second substrate and corresponds to the clearance area up and down, and the top cover protrudes upward from the second substrate to form the connecting portion.
[0007] In a possible implementation manner, a first sealing groove is provided at the edge of the part of the first substrate corresponding to the clearance area, and a first extension rib is provided at the lower end of the top cover, and the first extension rib is hermetically inserted into the first sealing groove.
[0008] In a possible implementation, a second sealing groove is provided at the edge of the first substrate. The second sealing groove and the first sealing groove are butted to form a ring. A second extension rib is provided at the edge of the lower surface of the second substrate, and the second extension rib is hermetically inserted into the first sealing groove.
[0009] In a possible implementation, a third sealing groove is correspondingly provided along at least part of the boundary of the clearance area on the upper surface of the second substrate. A third extension rib is provided at the lower end of the top cover, and the third extension rib is hermetically inserted into the third sealing groove.
[0010] In a possible implementation, an auxiliary circuit board extending into the clearance area is connected to the second substrate. The auxiliary circuit board is electrically connected to the main circuit board; each connector is respectively connected to the auxiliary circuit board and conducts with the circuit pattern on the auxiliary circuit board.
[0011] In a possible implementation, a plurality of mounting blocks are provided on one side of the second substrate. Each mounting block is located below the auxiliary circuit board and is connected to the auxiliary circuit board.
[0012] In a possible implementation, a plurality of baffles are provided on one side of the top cover, and mounting holes are formed between adjacent baffles.
[0013] In a possible implementation, a plurality of connecting plates are provided on the second substrate, and each connecting plate is respectively connected to the baffle.
[0014] In a possible implementation, a sealing ring is sleeved on the connector, and the sealing ring is in sealing contact with the hole wall of the mounting hole.
[0015] The beneficial effects of the waterproof controller for new energy vehicles provided by the present utility model are as follows: Compared with the prior art, one side of the housing of the present utility model has a connecting portion protruding from the upper surface. The connector is connected to the mounting hole provided on the other side of the housing facing the connector. The connector is located in the mounting hole and is provided above the housing. After the wire harness plug is inserted into the connector, the wire harness is located on the upper surface of the housing, which can utilize the height space and release the flat-laying occupied space, and is beneficial to improving the overall structural compactness; the connector is hermetically embedded in the mounting hole, so that a sealed environment is formed inside the housing, preventing the outside humid air from entering the housing in a humid environment, and preventing the main circuit board from being damaged by water ingress and moisture, which is beneficial to protecting the engine operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a three-dimensional structural diagram of the waterproof controller for new energy vehicles (removing some connectors) provided by the embodiment of the present utility model;
[0017] Figure 2 is a side view structural diagram of the housing adopted by the embodiment of the present utility model;
[0018] Figure 3Schematic three-dimensional structure diagram of the housing (excluding the top cover) adopted in the embodiment of the present utility model;
[0019] Figure 4 Top view structure diagram of the first substrate 11 adopted in the embodiment of the present utility model;
[0020] Figure 5 Bottom view structure diagram of the second substrate adopted in the embodiment of the present utility model;
[0021] Figure 6 Top view structure diagram of the second substrate adopted in the embodiment of the present utility model;
[0022] Figure 7 Bottom view structure diagram of the top cover adopted in the embodiment of the present utility model;
[0023] In the figure: 10, housing; 11, first substrate; 111, first sealing groove; 112, second sealing groove; 12, second substrate; 121, second extension rib; 122, third sealing groove; 123, mounting block; 124, connecting plate; 13, top cover; 131, mounting hole; 132, first extension rib; 133, third extension rib; 134, baffle; 14, cavity; 15, clearance area; 20, main circuit board; 30, connector; 40, auxiliary circuit board; 50, sealing ring; 60, wire harness plug. Specific embodiments
[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0025] It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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 thus cannot be understood as a limitation of the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or several of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.
[0026] Please refer to Figures 1 to 7 as well. Now, the waterproof controller for new energy vehicles provided by the present utility model will be described. The waterproof controller for new energy vehicles includes a housing 10, a main circuit board 20 encapsulated in the housing 10, and a plurality of connectors 30. Among them, one side of the housing 10 has a connecting portion protruding from its upper surface, and a plurality of mounting holes 131 are spaced apart on the surface of the connecting portion facing the other side of the housing 10. Each of the connectors 30 corresponds to one of the mounting holes 131 respectively and is hermetically fitted therein. Among them, each of the connectors 30 is electrically connected to the main circuit board 20 and is respectively used for plugging and mating with a wire harness plug 60 of an engine control wire harness.
[0027] It should be noted that the position of the mounting holes 131 determines that the connectors 30 are located above the housing 10 rather than on the side, so that the height space can be utilized and the flat occupation space can be released. Moreover, after the wire harness plug 60 is plugged into the connector 30, the wire harness is located on the upper surface of the housing 10 instead of the outside of the housing 10 in the prior art, thereby improving the overall structural compactness. The main circuit board 20 is directly encapsulated inside the housing 10. As long as the seal between the connector 30 and the mounting hole 131 is ensured, the waterproof and sealing effect can be guaranteed. The sealing method can be to apply a sealant at the gap after the connector 30 is installed on the housing 10, or to add a sealant in the gap between the connector 30 and the housing 10 for sealing.
[0028] The beneficial effects of the waterproof controller for new energy vehicles provided by the present utility model are as follows: Compared with the prior art, one side of the housing 10 of the present utility model has a connecting portion protruding from the upper surface. The connector 30 is connected to the mounting holes 131 provided on the other side of the connecting portion facing the housing 10. The connector 30 is located in the mounting hole 131 and is provided above the housing 10. After the wire harness plug 60 is plugged into the connector 30, the wire harness is located on the upper surface of the housing 10, so that the height space can be utilized and the flat occupation space can be released, which is beneficial to improving the overall structural compactness. The connector 30 is hermetically fitted in the mounting hole 131, forming a closed environment inside the housing, preventing the outside humid air from entering the housing 10 in a humid environment, and preventing the main circuit board 20 from being damaged by water ingress and moisture, which is beneficial to protecting the operation of the engine.
[0029] In a possible implementation manner, please refer to Figure 2 and Figure 3, the housing 10 includes a first substrate 11, a second substrate 12, and a top cover 13; the upper surface of the first substrate 11 mounts the main circuit board 20; the second substrate 12 covers above the first substrate 11 and forms a cavity 14 for accommodating the main circuit board 20 between the second substrate 12 and the first substrate 11. An avoidance area 15 is formed at the position of the second substrate 12 directly below the connection part, and the avoidance area 15 is used to communicate each mounting hole 131 with the cavity 14; the top cover 13 covers the first substrate 11 and the second substrate 12 and corresponds to the avoidance area 15 up and down. The top cover 13 protrudes upward from the second substrate 12 to form a connection part.
[0030] It should be noted that the first substrate 11 provides a mounting position for the main circuit board 20, enabling the main circuit board 20 to be fixed on the upper surface of the first substrate 11; the second substrate 12 can serve as a protective case for the main circuit board 20. After the second substrate 12 is covered on the first substrate 11, a cavity 14 is formed between the first substrate 11 and the second substrate 12, and an avoidance area 15 is formed between the second substrate 12 and the top cover 13. The avoidance area 15 communicates with the cavity 14, enabling the connector 30 to extend into the interior of the avoidance area 15 and be electrically connected to the main circuit board 20 in the cavity 14 through pin headers.
[0031] In a possible implementation, please refer to Figure 4 , at the edge of the part of the first substrate 11 corresponding to the avoidance area 15, a first sealing groove 111 is provided, and at the lower end of the top cover 13, a first extension rib 132 is provided. The first extension rib 132 is hermetically inserted into the first sealing groove 111.
[0032] It should be noted that a first sealing groove 111 is provided at the joint of the first substrate 11 and the top cover 13. The top cover 13 is inserted into the first sealing groove 111 through the first extension rib 132, and a sealing adhesive is filled in the first sealing groove 111. When the first extension rib 132 is inserted into the first sealing groove 111, the top cover 13 squeezes the sealing adhesive to seal the connection gap between the top cover 13 and the first substrate 11, improving the connection airtightness between the top cover 13 and the first substrate 11.
[0033] In a possible implementation, please refer to Figure 4 and Figure 5 , the edge of the first substrate 11 is provided with a second sealing groove 112, the second sealing groove 112 is docked with the first sealing groove 111 to form a ring, and the lower surface edge of the second substrate 12 is provided with a second extension rib 121. The second extension rib 121 is hermetically inserted into the first sealing groove 111.
[0034] It should be noted that the second substrate 12 is inserted into the second sealing groove 112 on the first substrate 11 through the second connecting ribs. The annular second sealing groove 112 and the first sealing groove 111 are both filled with sealing rubber materials. When the top cover 13 and the second substrate 12 are both attached to the first substrate 11, the joints around the edge of the first substrate 11 are all sealed, forming a sealed environment inside the housing, preventing the external humid air from entering the housing 10 in a humid environment, and preventing the main circuit board 20 from getting wet and damaged, which is beneficial to protecting the engine operation.
[0035] In a possible implementation manner, please refer to Figure 6 and Figure 7 , a third sealing groove 122 is correspondingly arranged on the upper surface of the second substrate 12 along at least part of the boundary of the clearance area 15, and a third extension rib 133 is provided at the lower end of the top cover 13. The third extension rib 133 is hermetically inserted into the third sealing groove 122.
[0036] It should be noted that the third sealing groove 122 is filled with sealing rubber materials. After the third extension rib 133 is inserted into the third sealing groove 122, the internal sealing rubber materials are extruded, so that the sealing rubber materials block the gaps, realizing the sealed connection between the second substrate 12 and the top cover 13. Cooperating with the first sealing groove 111 and the second sealing groove 112, the whole forms a sealed structure, protecting the main circuit board 20 inside the housing 10 and preventing the main circuit board 20 from getting wet due to water entering the housing 10, which is beneficial to protecting the normal operation of the engine.
[0037] In a possible implementation manner, please refer to Figure 2 and Figure 3 , an auxiliary circuit board 40 extending into the clearance area 15 is connected to the second substrate 12. The auxiliary circuit board 40 is electrically connected to the main circuit board 20; each connector 30 is respectively connected to the auxiliary circuit board 40 and conducts with the circuit pattern on the auxiliary circuit board 40.
[0038] It should be noted that the auxiliary circuit board 40 is arranged between the clearance area 15 and the cavity 14 and is electrically connected to the connector 30 and the main circuit board 20 respectively. The auxiliary circuit board 40 provides a connection position for the connector 30 to be electrically connected to the main circuit board 20, so that the connector 30 is electrically connected to the auxiliary circuit board 40 after extending into the clearance area 15. The auxiliary circuit board 40 is electrically connected to the main circuit board 20, so that the connector 30 is electrically connected to the main circuit board 20; the connector 30 and the auxiliary circuit board 40, and the auxiliary circuit board 40 and the main circuit board 20 are all electrically connected through pin headers, which can realize the transmission of current between the connector 30 and the main circuit board 20, enhance the current-carrying capacity between the main circuit board 20 and the connector 30, and improve the transmission capacity of the device.
[0039] In a possible implementation manner, please refer to Figure 2, on one side of the second substrate 12, there are a plurality of mounting blocks 123. Each mounting block 123 is located below the auxiliary circuit board 40 and is connected to the auxiliary circuit board 40.
[0040] It should be noted that the upper surface of the mounting block 123 is lower than the upper surface of the second substrate 12. After the auxiliary circuit board 40 is connected to the mounting block 123, the upper surface of the mounting block 123 and the upper surface of the second substrate 12 are at the same position, so that the connector 30 can be attached to the second substrate 12 while being mounted on the auxiliary circuit board 40. While realizing the electrical connection between the connector 30 and the auxiliary circuit board 40, the gap between the connector 30 and the second substrate 12 is reduced, avoiding damage to the internal pins of the connector 30 during use, and being beneficial to protecting the normal use of the connector 30.
[0041] In a possible implementation, please refer to Figure 1 , on one side of the top cover 13, there are a plurality of baffles 134, and mounting holes 131 are formed between adjacent baffles 134.
[0042] It should be noted that each connector 30 is respectively located in the mounting hole 131 between adjacent two baffles 134. The opening area of the mounting hole 131 is larger than the cross-sectional area of the connector 30, so that the connector 30 can extend into the mounting hole 131 and realize electrical connection with the auxiliary circuit board 40; the mounting hole 131 provides a gap between the connector 30 and the top cover 13, allowing a small error in the mounting position of the connector 30 during installation, and avoiding affecting the installation of the top cover 13 when the mounting position of the connector 30 changes slightly, which is beneficial to the installation of the device.
[0043] In a possible implementation, please refer to Figure 1 and Figure 3 , on the second substrate 12, there are a plurality of connecting plates 124, and each connecting plate 124 is respectively connected to the baffle 134.
[0044] It should be noted that the baffle 134 and the connecting plate 124 are in one-to-one correspondence and are fixed by bolts, which can improve the connection strength between the housing 10 and the top cover 13 and improve the structural strength of the device.
[0045] In a possible implementation, please refer to Figure 1 , a sealing ring 50 is sleeved on the connector 30, and the sealing ring 50 is in sealing contact with the hole wall of the mounting hole 131.
[0046] It should be noted that the sealing ring 50 sleeved on the connector 30 fits tightly against the mounting hole 131 and the connector 30, which can block the gap between the top cover 13 and the connector 30, improve the sealing degree of the device, prevent external humid air from entering the clearance area 15 of the top cover 13 in a humid environment, and prevent the insertion end of the connector 30 from being affected by moisture and water, thus avoiding short - circuit of the circuit and being beneficial to protecting the safety of device use.
[0047] The installation steps of the waterproof controller for new energy vehicles provided by the present utility model are as follows: The main circuit board 20 and the auxiliary circuit board 40 are welded together through pin headers, and the connector 30 is fixed on the auxiliary circuit board 40 through pin headers to achieve electrical connection among the three; The auxiliary circuit board 40 and the mounting block 123 on the second substrate 12 are fixed through bolts, so that the lower surface of the connector 30 abuts against the upper surface of the second substrate 12; Sealant is filled into the second sealing groove 112, and the second extension rib 121 on the second substrate 12 is inserted into the second sealing groove 112 to achieve the sealed connection between the second substrate 12 and the first substrate 11; Sealant is filled into the first sealing groove 111 and the third sealing groove 122, and the first extension rib 132 on the top cover 13 is inserted into the first sealing groove 111, and the third extension rib 133 is inserted into the third sealing groove 122 to achieve the sealed connection between the top cover 13 and the first substrate 11 and the second substrate 12; The gap between the top cover 13 and the connector 30 is blocked by the sealing ring 50; A breather valve is installed on the top cover 13 to complete the installation of the waterproof controller for new energy vehicles.
[0048] The above - mentioned are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A waterproof controller for new energy vehicles, characterized in that: It comprises a shell, a main circuit board encapsulated in the shell, and a plurality of connectors; wherein, one side of the shell has a connecting portion protruding from its upper surface, and the surface of the connecting portion facing the other side of the shell is provided with a plurality of mounting holes spaced apart; each of the connectors corresponds to each of the mounting holes one by one and is sealed and embedded; wherein each of the connectors is electrically connected to the main circuit board, and is used to be plugged in and matched with a wiring harness plug of an engine control wiring harness.
2. The waterproof controller for new energy vehicles according to claim 1, characterized in that: The housing comprises: a first substrate, the main circuit board being mounted on an upper surface of the first substrate; A second substrate is sealed on the first substrate and forms a cavity for accommodating the main circuit board between the second substrate and the first substrate, and a portion of the second substrate directly below the connecting portion forms an air avoidance area, and the air avoidance area is used to connect each of the mounting holes with the cavity; A top cover is sealed on the first substrate and the second substrate and corresponds to the air-avoiding area up and down. The top cover protrudes upward from the second substrate to form the connecting portion.
3. The waterproof controller for new energy vehicles as claimed in claim 2, characterized in that: A first sealing groove is provided at the edge of the portion of the first substrate corresponding to the air-avoiding area, and a first extending rib is provided at the lower end of the top cover, and the first extending rib is sealed and plugged into the first sealing groove.
4. The waterproof controller for new energy vehicles as claimed in claim 3, characterized in that: A second sealing groove is provided at the edge of the first substrate, the second sealing groove is connected with the first sealing groove to form a ring, and a second extending rib is provided at the lower surface edge of the second substrate, the second extending rib is sealed and inserted in the first sealing groove.
5. The waterproof controller for new energy vehicles as claimed in claim 3, characterized in that: A third sealing groove is correspondingly arranged on the upper surface of the second substrate along at least a portion of the boundary of the air-avoiding area, and a third extending rib is arranged at the lower end of the top cover, and the third extending rib is sealed and plugged into the third sealing groove.
6. The waterproof controller for new energy vehicles as claimed in claim 2, characterized in that: The second substrate is connected to an auxiliary circuit board extending into the air-avoiding area, and the auxiliary circuit board is electrically connected to the main circuit board; each of the connectors is respectively connected to the auxiliary circuit board and is in conduction with the circuit pattern on the auxiliary circuit board.
7. The waterproof controller for new energy vehicles according to claim 6, characterized in that: A plurality of mounting blocks are disposed on one side of the second substrate, and each of the mounting blocks is located below the auxiliary circuit board and is connected to the auxiliary circuit board.
8. The waterproof controller for new energy vehicles as claimed in claim 2, characterized in that: A plurality of baffles are spaced apart in the top cover, and the mounting holes are formed between adjacent baffles.
9. The waterproof controller for new energy vehicles according to claim 8, characterized in that: A plurality of connecting plates are disposed on the second substrate, and each of the connecting plates is connected to the baffle respectively.
10. The waterproof controller for new energy vehicles according to any one of claims 1 to 9, characterized in that: A sealing ring is sleeved on the connector, and the sealing ring is in sealing contact with the hole wall of the mounting hole.