Electric power controller for vehicle

Abstract

The utility model provides an electric power controller for a vehicle. The electric power controller for the vehicle comprises a shell, a first circuit board, a second circuit board and a supporting piece arranged between the first circuit board and the second circuit board. The shell comprises a substrate and a peripheral wall. The first circuit board comprises a first board body and a plurality of signal processing elements. The second circuit board comprises a second board body and at least one power electronic component arranged on the second board body. The supporting piece, the first circuit board and the second circuit board jointly define a containing space. The first circuit board and the second circuit board are separated by means of the supporting piece, insulation heat dissipation glue used for packaging can be prevented from being directly coated between the first board body and the second board body, different thermal deformation amounts of all elements are dealt with through the existence of the containing space, and it is ensured that the quality of assembled products is consistent.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electric power controller, in particular to a kind of electric power controller for vehicle. BACKGROUND

[0002] Microcontroller Unit (MCU), also known as electric power controller, is a kind of microcomputer that integrates Central Processing Unit (CPU), memory (Random Access Memory, RAM) or input and output interface and other electronic components on a chip. With the advantages of small size and low power consumption, it is widely used in electronic devices such as automobiles, home appliances, Internet of Things and artificial intelligence.

[0003] Generally, when manufacturing electric power controllers, the single board structure or double board stacking method is used. The single board structure is mainly composed of signal elements and power elements soldered on the same printed circuit board using conventional epoxy fiberglass laminate (FR4). Although the single board structure has the advantages of low material cost, short manufacturing time and simple production, the heat generated by the power elements during operation is continuously accumulated inside, which causes uneven heating of the circuit board and deformation, carbonization, and even burning of the entire structure.

[0004] In addition, if the double board stacking method is used, since the commonly used epoxy fiberglass laminate has poor heat dissipation, the power elements, which are easy to conduct heat, are soldered on the aluminum-based circuit board, and the signal elements, which are not easy to conduct heat, are soldered on the epoxy fiberglass laminate circuit board. Then, the two circuit boards are stacked together by jumper electrical connection, and insulating heat dissipation glue is applied between the two boards. However, although the double board structure can solve the problem of epoxy fiberglass laminate damage, since the insulating glue and the pins of electronic components are made of different materials, their thermal expansion coefficients are different. If the expansion and contraction last for a long time, internal stress changes may occur, causing solder joint rupture, component displacement, and resistance increase, which may damage the electric power controller. In addition, the jumper used to electrically connect the two boards is made by secondary heating welding, so the manufacturing parameters cannot be accurately controlled, resulting in inconsistent product quality and quality assurance issues. Therefore, there is still room for improvement in the known electric power controller. SUMMARY

[0005] [Problems to be solved by the utility model]

[0006] Therefore, the purpose of the utility model is to provide an electric power controller for vehicle that can make the overall structure more stable and the product quality uniform.

[0007] [Technical means for solving problems]

[0008] Therefore, the utility model discloses a vehicle power controller, including a casing, a first circuit board, a second circuit board that is set up with the first circuit board each other interval setting of the casing and a support that is set up between the first circuit board and the second circuit board.

[0009] The casing includes a base plate, and a peripheral wall extending upwardly around the base plate.

[0010] The first circuit board includes a first board body, and a plurality of signal processing elements disposed on the first board body.

[0011] The second circuit board is disposed on the base plate of the casing and spaced apart from the first circuit board, and includes a second board body, and at least one power electronic element disposed on the second board body.

[0012] The support, the first circuit board and the second circuit board together define a receiving space.

[0013] In some embodiments of the utility model, wherein the support has a first vent hole in the form of a through hole, and the peripheral wall of the casing forms a second vent hole communicating with the outside and aligned with the first vent hole.

[0014] In some embodiments of the utility model, the vehicle power controller further comprises a shielding member that can be detached and blocked outside the second vent hole to prevent foreign matter or moisture from entering.

[0015] In some embodiments of the utility model, the support is disposed between the first board body of the first circuit board and the second board body of the second circuit board, and includes an outer frame portion, and a transverse portion disposed around the outer frame portion and extending inwardly from the outer frame portion, and the second board body of the second circuit board has a plurality of pins arranged at intervals and penetrating the support.

[0016] In some embodiments of the utility model, wherein the support forms first perforations for the pins to fit; the support also has a plurality of second perforations penetrating the transverse portion; the first board body also has a plurality of holes aligned with the second perforations; the second board body also has a plurality of limit members arranged at intervals and penetrating the second perforations and the holes respectively.

[0017] In some embodiments of the utility model, wherein each limit member is made of conductive material and has a body portion welded to the second board body, a stepped portion connected to the body portion and used to abut against the first board body, and an end portion connected to the stepped portion and penetrating the corresponding hole.

[0018] In some embodiments of the present application, the support member is made of a non-conductor.

[0019] In some embodiments of the present application, the second plate body of the second circuit board has a higher thermal conductivity than the first plate body of the first circuit board, and the peripheral wall of the housing forms a plurality of heat dissipation members on one side of the second circuit board, which protrude outward and increase the heat dissipation area in contact with air.

[0020] In some embodiments of the present application, the first plate body of the first circuit board also has a plurality of terminals for connecting external controllers, batteries and motors, and the terminals are arranged on the outer side of the support member towards the peripheral wall.

[0021] [Effects of the present application]

[0022] The present application has the effect that the support member separates the first circuit board and the second circuit board, avoiding direct application of insulating heat dissipation glue between the first plate body and the second plate body for packaging, and using the existence of the accommodation space to cope with different thermal deformation amounts of each element, ensuring the quality consistency of the assembled product.

[0023] In some embodiments of the present application, the first vent hole and the second vent hole of the support member are connected to the outside air to balance the pressure in the accommodation space.

[0024] In some embodiments of the present application, the shielding member can block the second vent hole, thereby preventing foreign matter or moisture from entering the accommodation space after assembly, so as to avoid the failure of the power controller.

[0025] In some embodiments of the present application, the structure strength of the entire power controller is increased by the penetration of the limiting members through the holes, and the stability of the structure strength is further strengthened by the design of the transverse portion. In addition, the transverse portion is covered by the pins by arranging the pins through the first perforations, thereby avoiding the fracture of the pins.

[0026] In some embodiments of the present application, each limiting member is made of a conductive material, which can also be used as a pin to electrically connect the first plate body and the second plate body. In addition, the overall structure strength is further strengthened by the design of each end portion.

[0027] In some embodiments of the present application, the support member can isolate external foreign matter to avoid affecting the operation of the first plate body and the second plate body.

[0028] In some embodiments of the utility model, the power element which generates high heat during operation is arranged on the second plate body, so that the heat energy can be concentrated on the second plate body, thereby improving the heat accumulation inside the power controller, and the cooling efficiency of the circuit element is further improved by the design of the heat dissipation members. At the same time, the thermal conductivity between the first plate body and the second plate body is different, so that the direction of heat conduction is guided to the second plate body with higher thermal conductivity, thereby optimizing the effect of heat conduction.

[0029] In some embodiments of the utility model, by the arrangement of the terminals, when the power controller is combined with external elements, the support member can prevent indirect internal stress caused by stress. BRIEF DESCRIPTION OF DRAWINGS

[0030] Other features and effects of the utility model will be clearly presented in the embodiments with reference to the drawings, wherein:

[0031] Figure 1 It is a perspective view illustrating an embodiment of a vehicle power controller;

[0032] Figure 2 It is a perspective exploded view illustrating an embodiment of the utility model power controller;

[0033] Figure 3 It is a partially enlarged sectional view illustrating the arrangement of one limiting member of a second plate body of the embodiment; and

[0034] Figure 4 It is a partially enlarged sectional view illustrating the relative position of a first air hole and a second air hole.

[0035] LIST OF REFERENCE NUMERALS

[0036] 1····housing

[0037] 11···base plate

[0038] 12···peripheral wall

[0039] 120···second air hole

[0040] 121···heat dissipation member

[0041] 2····first circuit board

[0042] 21···first plate body

[0043] 210···hole

[0044] 211···signal processing element

[0045] 212···terminal

[0046] 3 second circuit board

[0047] 31 second plate body

[0048] 311 power electronic element

[0049] 312 pin

[0050] 313 limiting member

[0051] 314 body portion

[0052] 315 stepped portion

[0053] 316 end portion

[0054] 4 support member

[0055] 40 accommodation space

[0056] 400 first vent hole

[0057] 41 outer frame portion

[0058] 42 lateral portion

[0059] 420 first perforation

[0060] 430 second perforation

[0061] 5 shielding member DETAILED DESCRIPTION

[0062] Reference Figure 1 For an embodiment of the utility model vehicle power controller, the embodiment includes a housing 1, a first circuit board 2 tightly locked to the housing 1, a second circuit board 3 arranged in the housing 1 and spaced from the first circuit board 2, a support member 4 arranged between the first circuit board 2 and the second circuit board 3 and jointly defining an accommodation space 40, and a shielding member 5 detachably plugged outside the housing 1. In fact, the embodiment can be loaded in a suitable position inside a motorcycle according to different situations, for example, loaded near a footboard to eliminate the effect of heat energy and the like.

[0063] The housing 1 is preferably made of aluminum alloy material with high heat conduction speed and anti-vibration effect, but composite plastic material can also be used in actual implementation, thus not limited to the example. For example, Figure 2As shown, the housing 1 comprises a base plate 11 and a peripheral wall 12 extending upwardly from the base plate 11. The peripheral wall 12 has a plurality of fins 121 protruding outwardly from one side of the second circuit board 3 to increase the heat dissipation area in contact with air.

[0064] The first circuit board 2 comprises a first board body 21 locked with four corners of the peripheral wall 12, a plurality of signal processing elements 211 soldered on the first board body 21, and a plurality of terminals 212 electrically connected with an external controller, a battery and a motor, which are arranged on the outer side of the support 4 towards the peripheral wall 12. The first board body 21 is preferably in the form of a double-layer board. Compared with a single-layer board, the double-layer board can effectively arrange the circuit layout, but the actual implementation is not limited to the double-layer board.

[0065] The second circuit board 3 comprises a second board body 31 arranged on the base plate 11, a plurality of power electronic elements 311 soldered on the second board body 31, a plurality of pins 312 arranged at intervals, and a plurality of limiters 313 arranged at intervals and abutting against the first board body 21.

[0066] The support 4 is arranged between the first board body 21 and the second board body 31 and comprises an outer frame 41 and a transverse portion 42 arranged around the outer frame 41. The transverse portion 42 extends inwardly from the outer frame 41 and forms a plurality of first through holes 420 for sleeving the pins 312 and five second through holes 430 in the form of through holes. Specifically, the support 4 is preferably made of a non-conductive material such as rubber. Due to the good elasticity of the rubber material, the support 4 can be easily sleeved between the first board body 21 of the first circuit board 2 and the second board body 31 of the second circuit board 3. Then, the first through holes 420 sleeving the pins 312 can stably cover the pins 312 to protect the pins 312 from breaking.

[0067] Referring to Figure 3 and cooperating Figure 2 As shown, each of the limiters 313 has a body portion 314 soldered on the base plate 11, a stepped portion 315 connected to the body portion 314 and abutting against the first board body 21, and an end portion 316 connected to the stepped portion 315 and corresponding to a hole 210 formed in the first board body 21. In practice, each of the limiters 313 is made of a conductive material, which not only supports the first board body 21 and the second board body 31, but also serves as a pin to electrically connect the first board body 21 and the second board body 31.

[0068] Referring back to Figure 2 The pins 312 can electrically connect the first plate body 21 and the second plate body 31 and pass through the corresponding first perforations 420 and are in the form of a combined pin array. In addition, each end portion 316 passes through the second perforations 430 and is inserted into the hole 210, thereby further enhancing the overall strength of the embodiment. Further, since the pins 312 mainly serve as a bridge, the electrical signals of the signal processing element 211 and the electrical signals of the power electronic element 311 can be communicated with each other, and when the terminals 212 are electrically connected to external elements, the function of the power controller can be performed.

[0069] In fact, the second plate body 31 is made of aluminum material with good thermal conductivity, and the first plate body 21 is made of epoxy glass layer material with relatively low thermal conductivity, so that after the insulating heat dissipation glue for encapsulation is coated between the first plate body 21 and the second plate body 31, the heat energy of the accommodation space 40 can be more effectively guided to the direction of the aluminum substrate with good thermal conductivity, so that the power controller can improve the heat accumulation in the accommodation space 40.

[0070] Based on the heat energy guidance described in the preceding paragraph, when the heat energy is guided to the housing 1, the heat dissipation members 121 can further increase the heat dissipation area in contact with the air, thereby accelerating the speed of heat energy dissipation. Since the embodiment generates very high temperature during operation, the heat dissipation members 121 are preferably made of the same material as the housing 1, and are preferably made of aluminum alloy material, thereby further enhancing the cooling rate of the circuit elements.

[0071] Referring back to Figure 4 and cooperating with Figure 2As shown, the support member 4 of the present embodiment also has a first vent hole 400 in a through manner, and the peripheral wall 12 of the housing 1 has a second vent hole 120 which is in communication with the outside and is aligned with the first vent hole 400. Specifically, a waterproof and breathable membrane is attached in advance during packaging, and when the signal processing element 211 and the power electronic element 311 generate high-temperature heat energy during operation, causing the accommodation space 40 to be filled with hot air, the hot air will pass through the waterproof and breathable membrane and be discharged towards the first vent hole 400 and the second vent hole 120. The blocking member 5 is partially sealed and blocked in the second vent hole 120, preventing water from entering while also preventing the waterproof and breathable membrane from being damaged due to external forces or human factors. Therefore, through the interlocking relationship of the elements, hot air can be effectively absorbed to help balance the pressure generated by thermal expansion in the accommodation space 40. Incidentally, the blocking member 5 is preferably made of a rubber waterproof plug, as rubber has the characteristics of wear resistance, aging resistance, and high hardness, so it is less likely to deform over time, but in actual implementation, it can also be made of silicone material that is resistant to high and low temperatures, that is, has good weather resistance. Therefore, the main selection condition is to prevent water or other foreign matter from entering the accommodation space 40, causing the first plate body 21 and the second plate body 31 to be damaged.

[0072] In summary, the present embodiment of the vehicle power controller can achieve basic protection of the first plate body 21, the second plate body 31, and the power electronic element 311 by the configuration relationship of the housing 1, the first circuit board 2, the second circuit board 3, the support member 4, and the terminals 212, so that the parts are not damaged due to thermal expansion. In addition, by the design of the limiting members 313, the transverse portion 42, and the holes 210, and by the cooperation of the first vent hole 400 and the second vent hole 120, the stability of the overall structure can be enhanced while the pressure is properly adjusted, and the first plate body 21 and the second plate body 31 do not deviate. Therefore, the purpose of the present utility model can be achieved.

[0073] The above is only an embodiment of the present utility model, which cannot limit the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of the present utility model are still within the scope of the present utility model.

Claims

1. An electric power controller for a vehicle, characterized by comprising: Comprising: a housing including a base plate and a peripheral wall extending upwardly from the base plate; a first circuit board including a first board body and a plurality of signal processing elements disposed on the first board body; a second circuit board disposed on the base plate of the housing and spaced apart from the first circuit board, and including a second board body and at least one power electronic element disposed on the second board body; and a support member disposed between the first circuit board and the second circuit board and defining a receiving space together with the first circuit board and the second circuit board. The support member has a first ventilation hole in a through-hole form, and the peripheral wall of the housing forms a second ventilation hole in communication with the outside and aligned with the first ventilation hole.

2. The electric power controller for a vehicle according to claim 1, characterized by, Further comprising a shielding member detachably shielded outside the second ventilation hole.

3. The electric power controller for a vehicle according to claim 2, characterized by, The support member is disposed between the first board body of the first circuit board and the second board body of the second circuit board, and includes an outer frame portion and a transverse portion disposed around the outer frame portion and extending inwardly from the outer frame portion.

4. The electric power controller for a vehicle according to claim 1, characterized by, The second board body of the second circuit board has a plurality of pins arranged in a spaced-apart manner and penetrating the support member.

5. The electric power controller for a vehicle according to claim 4, characterized by, The support member forms first through holes for the pins to be fitted.

6. The electric power controller for a vehicle according to claim 5, characterized by, The support member further has a plurality of second through holes penetrating the transverse portion, and the first board body further has a plurality of holes aligned with the second through holes, and the second board body further has a plurality of limit members arranged in a spaced-apart manner and penetrating the second through holes and the holes, respectively.

7. The electric power controller for a vehicle according to claim 4, characterized by, Each of the limit members has a body portion welded to the second board body, a stepped portion connected to the body portion and abutting against the first board body, and an end portion connected to the stepped portion and penetrating the corresponding hole.

8. The electric power controller for a vehicle according to claim 7, characterized by, Each of the limit members is made of a conductive material.

9. The electric power controller for a vehicle according to claim 7 or 8, characterized by, The support member is made of a non-conductor.

10. The electric power controller for a vehicle according to claim 1, 4 or 7, characterized by, The second board body of the second circuit board has a higher thermal conductivity than the first board body of the first circuit board.

11. The electric power controller for a vehicle according to claim 1, characterized by, The peripheral wall of the housing forms a plurality of heat dissipation members protruding outwardly on one side of the second circuit board and increasing the heat dissipation area in contact with air.

12. The electric power controller for a vehicle according to claim 11, characterized by, The first board body of the first circuit board further has a plurality of terminals electrically connected to an external controller, a battery and a motor, and the terminals are arranged on the outside of the support member and disposed toward the peripheral wall.

13. The electric power controller for vehicles according to claim 1, characterized by, ​

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