Automotive controller
By setting up partition walls between circuit boards and filling them with sealant, the problem of poor circuit board connection caused by thermal expansion and contraction of the sealant was solved, thus improving the lifespan and reliability of automotive controllers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN XIASHING MOTORCYCLE CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-03
AI Technical Summary
Existing automotive controllers suffer from thermal expansion and contraction due to the difference in expansion coefficients between the sealing material and the circuit board. This causes deformation of the pins and wires at the circuit board connection points, resulting in signal interruption or poor contact, which affects lifespan and reliability.
A partition wall is used to sandwich the circuit boards, and sealant is filled in between to limit the amount of sealant used and the amount of deformation, so as to avoid pushing the pins and wires.
Reduce the deformation of sealant materials, improve the lifespan and reliability of automotive controllers, and prevent circuit signal interruption or poor contact.
Smart Images

Figure CN224460223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a vehicle controller, and more particularly to a vehicle controller for an integrated starter generator (ISG). Background Technology
[0002] Electric vehicles or hybrid vehicles typically feature an integrated starter generator (ISG) and a vehicle controller. The vehicle controller rectifies and phase-regulates the power supplied by the generator, converting it into voltage and current suitable for charging the battery. The vehicle controller usually contains one or more circuit boards, which are then interconnected using pins and wires. After assembly, the remaining space inside the controller housing is filled with sealant to prevent water and dust ingress. However, due to the different expansion coefficients of the multiple circuit boards and the sealant, after a period of use, environmental factors and the controller's own heat cause thermal expansion and contraction between the sealant and the circuit boards, leading to deformation of the pins and wires at the circuit board connections. This can result in signal interruptions or poor contact, affecting the lifespan and reliability of the vehicle controller. Utility Model Content
[0003] This utility model provides an automotive controller to address the problems of the prior art, comprising a housing, a first circuit board, a first partition wall, a second circuit board, and a sealant. The housing includes a housing space. The first circuit board is disposed within the housing, and includes a first surface and a second surface, the first surface being opposite to the second surface. The first partition wall abuts against the first surface of the first circuit board. The second circuit board is disposed within the housing, and includes a third surface and a fourth surface, the third surface being opposite to the fourth surface. The second circuit board overlaps the first circuit board. The first partition wall is sandwiched between the first and second circuit boards, defining a first partition space, and abuts against the third surface of the second circuit board. The sealant is filled within the housing, wherein the sealant is blocked by the first partition wall and fills the housing space outside the first partition space.
[0004] In one embodiment, the first partition wall is a continuous wall.
[0005] In one embodiment, the first partition wall includes a first end and a second end, the first end and the second end respectively abutting against the inner wall of the housing.
[0006] In one embodiment, the first partition wall is made of rubber.
[0007] In one embodiment, the first circuit board further includes at least one heat source disposed on the second surface and thermally connected to the housing.
[0008] In one embodiment, the first circuit board further includes a plurality of pins disposed on the first surface and covered by the sealant.
[0009] In one embodiment, the first circuit board further includes a plurality of support pillars disposed on the first surface and covered by the sealant.
[0010] In one embodiment, the first circuit board further includes a capacitor disposed on the first surface and covered by the sealant.
[0011] In one embodiment, the vehicle controller further includes a third circuit board and a second partition wall. The third circuit board is disposed within the housing, and includes a fifth surface, overlapping the second circuit board. The second partition wall is sandwiched between the second and third circuit boards, defining a second partition space. The second partition wall abuts against the fourth surface of the second circuit board and the fifth surface of the third circuit board. The sealant is blocked by the second partition wall and fills the housing space outside the second partition space.
[0012] In another embodiment, the present invention provides an electric vehicle, including the aforementioned vehicle controller and a generator. The generator is coupled to the vehicle controller.
[0013] In an embodiment of this invention, a first partition wall is sandwiched between the first circuit board and the second circuit board, defining a first partition space. The sealant is blocked by the first partition wall and fills the housing space outside the first partition space. Therefore, compared to the prior art, the amount of sealant used in this embodiment is smaller, and the deformation of the sealant due to thermal expansion and contraction after a period of use in the automotive controller is also smaller. Thus, the situation where the sealant pushes against the pins and wires can be avoided, improving the lifespan and reliability of the automotive controller. Attached Figure Description
[0014] Figure 1 The exterior of the electric vehicle is shown in this embodiment of the utility model.
[0015] Figure 2 This is an exploded view of a portion of the structure of the vehicle controller according to the first embodiment of this utility model.
[0016] Figure 3This is a partial structural assembly diagram of the vehicle controller according to the first embodiment of this utility model.
[0017] Figure 4 This is a diagram of the vehicle controller according to the first embodiment of the present invention.
[0018] Figure 5 This is a block diagram of the first circuit board according to an embodiment of the present utility model.
[0019] Figure 6 This is an exploded view of a portion of the structure of the vehicle controller according to the second embodiment of this utility model.
[0020] Figure 7 This is the partition wall of the third embodiment of the present utility model.
[0021] Figure 8 This is a block diagram of an electric vehicle according to an embodiment of the present utility model.
[0022] Explanation of key component symbols:
[0023] C: Vehicle controller
[0024] 1: First circuit board
[0025] 11: First Surface
[0026] 12: Second Surface
[0027] 13: Stitches
[0028] 14: Support column
[0029] 15: Capacitor
[0030] 16: Heat source
[0031] 2: Second circuit board
[0032] 21: Third Surface
[0033] 22: Fourth Surface
[0034] 3: Third circuit board
[0035] 31: The Fifth Surface
[0036] 4: Casing
[0037] 41: Shell space
[0038] 42: Shell body
[0039] 43: Housing cover
[0040] 51: First dividing retaining wall
[0041] 511: First Dividing Space
[0042] 52: Second dividing retaining wall
[0043] 521: Second Dividing Space
[0044] 53: Separating retaining wall
[0045] 531: First end
[0046] 532: Second end
[0047] 533: Dividing Space
[0048] 61: Sealant Material
[0049] 69: Nozzle
[0050] G: Generator
[0051] M: Electric vehicle
[0052] 91: Dragon Head
[0053] 92: Front wheel
[0054] 93: Rear wheel
[0055] 94: Seat Cushion
[0056] 95: Power System Detailed Implementation
[0057] Reference Figure 1 The electric vehicle M in this embodiment of the present utility model has an exterior shape, including components such as a handlebar 91, a front wheel 92, a rear wheel 93, a seat 94, and a power system 95.
[0058] Electric vehicle M comprises a front section, a middle section, and a rear section. The front section of electric vehicle M includes components such as a handlebar 91, a front wheel 92, turn signals, and a keyhole. The middle section of electric vehicle M includes components such as a power system 95, a seat 94, and a kickstand. The rear section of electric vehicle M includes components such as a taillight, a rear wheel 93, and mudguards.
[0059] The handlebar 91 is used to control the direction of travel of the electric vehicle M. Functional components, including instruments, switches, and rearview mirrors, can be installed on the handlebar 91. The handlebar 91 also has a throttle (including a power throttle) and a handbrake. The user can steer the handlebar 91, adjust the power supply to the motor 95 via the power throttle to control power output, and slow down the electric vehicle M using the handbrake. A main light can also be installed on the handlebar 91, providing primary illumination for the electric vehicle M.
[0060] The head 91 and the front wheel 92 are connected by the head 91 rotating shaft. By rotating the head 91, the angle of the front wheel 92 can be controlled, thereby controlling the direction of travel of the electric vehicle M.
[0061] The power system 95 connects to and drives the rear wheel 93, thereby providing power to the electric vehicle M and enabling the electric vehicle M to move forward.
[0062] Figure 2 This is an exploded view of a portion of the structure of the vehicle controller according to the first embodiment of this utility model. Figure 3 This is a partial structural assembly diagram of the vehicle controller according to the first embodiment of this utility model. Figure 4 This is an assembly diagram of the vehicle controller according to the first embodiment of this utility model. (See attached diagram for reference.) Figure 2 , Figure 3 , Figure 4 The vehicle controller C of this utility model includes a housing 4, a first circuit board 1, a first partition wall 51, a second circuit board 2, and a sealing material 61. The housing 4 includes a housing space 41. The first circuit board 1 is disposed within the housing 4, and includes a first surface 11 and a second surface 12, the first surface 11 being opposite to the second surface 12. The first partition wall 51 abuts against the first surface 11 of the first circuit board 1. The second circuit board 2 is disposed within the housing 4, and includes a third surface 21 and a fourth surface 22, the third surface 21 being opposite to the fourth surface 22. The second circuit board 2 overlaps the first circuit board 1. The first partition wall 51 is sandwiched between the first circuit board 1 and the second circuit board 2, defining a first partition space 511, and abuts against the third surface 21 of the second circuit board 2. The sealant 61 is filled into the housing 4, wherein the sealant 61 is blocked by the first partition wall 51 and is filled into the housing space 41 outside the first partition space 511.
[0063] Reference Figure 2 , Figure 3 In one embodiment, the sealant 61 is injected into the housing 4 through a nozzle 69. The above disclosure does not limit the scope of this invention.
[0064] Reference Figure 2 , Figure 3 In one embodiment, the first partition wall 51 is a continuous wall. In another embodiment, the first partition wall 51 is made of rubber. The above disclosure does not limit the present invention; for example, the first partition wall 51 may also be made of other elastic sealing materials.
[0065] Matching reference Figure 2 , Figure 3 In one embodiment, the first circuit board 1 further includes a plurality of pins 13 disposed on the first surface 11 and covered by the sealant 61.
[0066] Matching reference Figure 2, Figure 3 In one embodiment, the first circuit board 1 further includes a plurality of support pillars 14 disposed on the first surface 11 and covered by the sealant 61.
[0067] Matching reference Figure 2 , Figure 3 In one embodiment, the first circuit board 1 further includes a capacitor 15 disposed on the first surface 11 and covered by the sealant 61.
[0068] Matching reference Figure 2 , Figure 3 , Figure 4 The housing 4 includes a housing body 42 and a housing cover 43. The housing cover 43 is connected to the housing body 42 to cover the first circuit board 1, the first partition wall 51, the second circuit board 2, and the sealing material 61. The above disclosure does not limit the present invention.
[0069] Figure 5 This is a block diagram of the first circuit board according to an embodiment of the present invention. (See attached reference.) Figure 2 , Figure 3 , Figure 5 In one embodiment, the first circuit board 1 further includes at least one heat source 16 disposed on the second surface 12 and thermally connected to the housing 4. In one embodiment, the heat source 16 may be a chip or other electronic component that generates heat.
[0070] Figure 6 This is an exploded view of a portion of the structure of the vehicle controller according to the second embodiment of this utility model. (Refer to...) Figure 6 In one embodiment, the vehicle controller further includes a third circuit board 3 and a second partition wall 52. The third circuit board 3 is disposed within the housing 4, and the third circuit board 3 includes a fifth surface 31, overlapping the second circuit board 2. The second partition wall 52 is sandwiched between the second circuit board 2 and the third circuit board 3, defining a second partition space 521. The second partition wall 52 abuts against the fourth surface 22 of the second circuit board 2 and the fifth surface 31 of the third circuit board 3. The sealant (not shown) is blocked by the second partition wall 52 and fills the housing space 41 outside the second partition space 521.
[0071] Figure 7 This is a partition wall according to the third embodiment of the present utility model. (See reference...) Figure 7In this embodiment, the partition wall 53 includes a first end 531 and a second end 532, which respectively abut against the inner wall (not shown) of the housing. In this embodiment, the partition wall 53 is not a continuous wall. The partition wall 53 and the inner wall (not shown) of the housing together define a partition space 533.
[0072] Figure 8 This is a block diagram of an electric vehicle according to an embodiment of the present utility model. (Refer to...) Figure 8 In one embodiment, the electric vehicle M of this invention includes the aforementioned vehicle controller C and a generator G. The generator G is coupled to the vehicle controller C.
[0073] In an embodiment of this invention, a first partition wall is sandwiched between the first circuit board and the second circuit board, defining a first partition space. The sealant is blocked by the first partition wall and fills the housing space outside the first partition space. Therefore, compared to the prior art, the amount of sealant used in this embodiment is smaller, and the deformation of the sealant due to thermal expansion and contraction after a period of use in the automotive controller is also smaller. Thus, the situation where the sealant pushes against the pins and wires can be avoided, improving the lifespan and reliability of the automotive controller.
[0074] The vehicle controller of this invention can be an integrated starter generator (ISG) vehicle controller. In the above embodiments, the vehicle controller is applicable to electric vehicles or hybrid vehicles. However, the above disclosure does not limit the invention. In another embodiment, the vehicle controller can also be applied to general internal combustion engine vehicles.
[0075] Although the present invention has been disclosed above with reference to specific preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection claimed in the patent application documents.
Claims
1. A vehicle controller characterized by comprising: include: A shell, including a shell space; A first circuit board is disposed within the housing, wherein the first circuit board includes a first surface and a second surface, the first surface being opposite to the second surface; A first partition wall abuts against the first surface of the first circuit board; A second circuit board is disposed within the housing, wherein the second circuit board includes a third surface and a fourth surface, the third surface being opposite to the fourth surface, the second circuit board overlaps the first circuit board, a first partition wall is sandwiched between the first circuit board and the second circuit board and defines a first partition space, the first partition wall abutting against the third surface of the second circuit board; and A sealant is filled into the housing, wherein the sealant is blocked by the first partition wall and is filled into the housing space outside the first partition space.
2. The automotive controller of claim 1, wherein, The first dividing retaining wall is a continuous wall.
3. The automotive controller of claim 1, wherein, The first partition wall includes a first end and a second end, which respectively abut against the inner wall of the housing.
4. The automotive controller of claim 1, wherein, The first partition wall is made of rubber.
5. The vehicle controller according to any one of claims 1 to 4, characterized by The first circuit board also includes at least one heat source disposed on the second surface and thermally connected to the housing.
6. The automotive controller of claim 5, wherein, The first circuit board also includes a plurality of pins disposed on the first surface and covered by the sealant.
7. The automotive controller of claim 5, wherein, The first circuit board also includes a plurality of support pillars disposed on the first surface and covered by the sealant.
8. The automotive controller of claim 5, wherein, The first circuit board also includes a capacitor disposed on the first surface and covered by the sealant.
9. The vehicle controller as described in any one of claims 1 to 4, characterized in that, Also includes: A third circuit board is disposed within the housing, wherein the third circuit board includes a fifth surface and overlaps the second circuit board; A second partition wall is provided, wherein the second partition wall is sandwiched between the second circuit board and the third circuit board and defines a second partition space, the second partition wall abuts against the fourth surface of the second circuit board and the fifth surface of the third circuit board, the sealant is blocked by the second partition wall and filled into the housing space outside the second partition space.