CN-224205309-U - PCBA bump electromagnetic shielding controller and car

Abstract

The utility model belongs to the technical field of electromagnetic shielding and circuit boards of controllers, and particularly relates to a PCBA bump electromagnetic shielding controller and an automobile. The PCBA bump electromagnetic shielding controller comprises an upper shell and a PCBA component, wherein the PCBA component comprises an electronic chip, ground strip copper exposure, tin balls and a circuit board, the electronic chip is arranged in a circuit area of the circuit board, the ground strip copper exposure is arranged on the circuit area around the circuit area, a plurality of tin balls are arranged on the ground strip copper exposure according to preset intervals, the upper shell is connected with the PCBA component, and the upper shell is contacted with the tin balls to form an electromagnetic shielding structure, so that the electromagnetic shielding technical scheme of the controller with good electromagnetic protection reliability and low cost is realized.

Inventors

• FU CHUNXIN
• FANG TAOTAO
• WANG LEI
• XIA JIAJIA

Assignees

• 昂创科技(苏州)有限公司

Dates

Publication Date

20260505

Application Date

20250528

Claims (10)

1. 1. The PCBA bump electromagnetic shielding controller is characterized by comprising an upper shell and a PCBA component; the PCBA component comprises an electronic chip, ground bar copper exposure, a tin ball and a circuit board; The electronic chip is arranged in a circuit area of the circuit board; the ground stripe copper exposure is arranged on the circuit board around the circuit area; The solder balls are arranged on the ground strip copper exposure according to preset intervals; The upper shell is connected with the PCBA component, and the upper shell is contacted with the solder balls to form an electromagnetic shielding structure.
2. 2. The PCBA bump electromagnetic shielding controller of claim 1, further comprising a lower housing that is snapped with the upper housing to form a cavity; The PCBA assembly is positioned in the cavity.
3. 3. The PCBA bump electromagnetic shielding controller according to claim 2, wherein the upper housing, the PCBA assembly, and the lower housing are secured by screws.
4. 4. A PCBA bump electromagnetic shielding controller according to claim 3, wherein screw holes are provided in the upper housing, the PCBA assembly, and the lower housing for threading the screws.
5. 5. The PCBA bump electromagnetic shielding controller of claim 2, wherein the upper housing and the lower housing are both aluminum alloy housings.
6. 6. The PCBA bump electromagnetic shielding controller of claim 1, wherein the upper housing is in point-to-surface contact with the solder balls.
7. 7. The PCBA bump electromagnetic shielding controller of claim 1, wherein the ground strap copper is looped around the circuit area on the circuit board to form a closed loop structure.
8. 8. The PCBA bump electromagnetic shielding controller of claim 1, wherein the predetermined pitch is a fixed pitch.
9. 9. The PCBA bump electromagnetic shielding controller of claim 1, wherein the preset pitch is a pitch range between two different pitches.
10. 10. An automobile, characterized in that the PCBA bump electromagnetic shielding controller according to any one of claims 1 to 9 is provided.

Description

PCBA bump electromagnetic shielding controller and car Technical Field The utility model belongs to the technical field of electromagnetic shielding and circuit boards of controllers, and particularly relates to a PCBA bump electromagnetic shielding controller and an automobile. Background Along with the rapid development of the intelligence of the automobile, the integration level of the chip is higher and higher, high-speed digital signals (such as PWM, CLK, ADC samples) and analog signals (sensor inputs) in the vehicle-mounted controller are easy to be subjected to coupling interference of external electromagnetic fields (such as a frequency converter and radio equipment), so that signal distortion is caused, the decision of intelligent driving of the whole automobile can be greatly influenced, and especially the judgment of a signal end on information can be adversely affected, but if electromagnetic shielding is well carried out, a noise substrate can be effectively reduced, and if the shielding body is used for absorbing/reflecting interference, the noise level of an ADC sampling circuit is reduced, the signal-to-noise ratio (SNR) is improved, and the error rate of signal acquisition is reduced, so that the electromagnetic shielding of the controller is significant. At present, a controller mostly adopts shielding materials to shield EMC structures, such as conductive foam, SMT paster foam, conductive adhesive and the like to fill gaps so as to reduce leakage, although electromagnetic protection effect can be achieved to a certain extent, reliability is poor for vehicle-specification products, such as the conductive foam is difficult to realize omnibearing shielding for special-shaped grooves, the requirements on fitting and shell structure processing are higher, additional stations are additionally required to be added for assembly, the SMT paster foam is used for a long time under the high-temperature operation condition of vehicle-mounted equipment and is easy to age and remove slag, short circuit influence is easily caused on electronic components, the conductive adhesive is formed by mixing a large number of metal particles and base material liquid silica gel, so that the texture is hard, the surface roughness is difficult to control, the structure is in line contact, larger gaps are produced due to uneven tilting of the surface of the structure, the yield is lower, and the scheme also requires outsourcing a set of glue dispensing equipment with higher cost, continuous debugging is required, and the cost of the equipment and the control is higher. Therefore, a controller electromagnetic shielding technical scheme with good electromagnetic protection reliability and low cost is needed to be provided. Disclosure of utility model In order to solve the technical problems, the utility model provides a PCBA bump electromagnetic shielding controller and an automobile. The utility model provides a PCBA bump electromagnetic shielding controller, which comprises an upper shell and a PCBA component; the PCBA component comprises an electronic chip, ground bar copper exposure, a tin ball and a circuit board; The electronic chip is arranged in a circuit area of the circuit board; the ground stripe copper exposure is arranged on the circuit board around the circuit area; The solder balls are arranged on the ground strip copper exposure according to preset intervals; The upper shell is connected with the PCBA component, and the upper shell is contacted with the solder balls to form an electromagnetic shielding structure. In one possible implementation manner, the device further comprises a lower shell, and the lower shell is buckled with the upper shell to form a cavity; The PCBA assembly is positioned in the cavity. In one possible implementation, the upper housing, the PCBA assembly, and the lower housing are fixed by screws. In one possible implementation, screw holes are provided on the upper housing, the PCBA assembly, and the lower housing for threading the screws. In one possible implementation, the upper housing and the lower housing are both aluminum alloy housings. In one possible implementation, the upper housing is in point-to-surface contact with the solder balls. In one possible implementation, the ground strap copper is formed in a closed loop structure around the circuit area on the circuit board. In one possible implementation, the preset distance is a fixed distance. In one possible implementation, the preset pitch is a pitch range between two different pitches. The utility model also provides an automobile provided with the PCBA bump electromagnetic shielding controller. The technical scheme provided by the utility model has at least the following beneficial effects: The combined structure of the ground strip copper exposure and the tin balls is arranged in the PCBA component, the radiation source leakage can be effectively prevented by matching with the upper shell and the lower shell, the up