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CN-224217358-U - Heat abstractor, electric capacity subassembly, controller and vehicle

CN224217358UCN 224217358 UCN224217358 UCN 224217358UCN-224217358-U

Abstract

A heat abstractor, a capacitor assembly, a controller and a vehicle relate to the technical field of capacitors. The heat dissipation device comprises a heat dissipation shell, a fan and a first windshield, wherein the heat dissipation shell is provided with a potting cavity, at least one outer side wall of the heat dissipation shell is provided with heat dissipation fins extending from the bottom to the top of the heat dissipation shell, the fan is arranged at the bottom of the heat dissipation shell, the first windshield is arranged outside at least one outer side wall of the heat dissipation shell, and a first air channel is formed between the first windshield and the heat dissipation fins. The heat dissipation device is favorable for improving the heat dissipation effect of the capacitor assembly.

Inventors

  • LI HAOTIAN
  • Shi Chunfu
  • WANG JIUHUI
  • XIE WEIQI
  • YUAN TAO

Assignees

  • 小米汽车科技有限公司

Dates

Publication Date
20260508
Application Date
20250422

Claims (20)

  1. 1. A heat sink, comprising: the heat dissipation shell (1) is provided with a potting cavity (11), and at least one outer side wall of the heat dissipation shell (1) is provided with heat dissipation fins extending from the bottom to the top of the heat dissipation shell (1); The fan (2) is arranged at the bottom of the heat dissipation shell (1); The first windshield (3) is arranged outside at least one outer side wall of the radiating shell (1), and a first air channel is formed between the first windshield (3) and the radiating fins.
  2. 2. The heat sink according to claim 1, characterized in that the first air duct runs through from the bottom of the heat sink housing (1) to the top of the heat sink housing (1).
  3. 3. The heat dissipation device according to claim 1, wherein the outer side wall of the heat dissipation housing (1) comprises a first side wall (101), a second side wall (102), a third side wall (103) and a fourth side wall (104) which are connected end to end in sequence, at least one of the first side wall (101) and the third side wall (103) is provided with the heat dissipation fin, and at least one of the second side wall (102) and the fourth side wall (104) is provided with the heat dissipation fin.
  4. 4. A heat dissipating device according to claim 3, wherein the potting chamber (11) is configured to accommodate a capacitor core package, the capacitor core package is provided with a conductive bar (4), the conductive bar (4) is exposed at the top of the heat dissipating device, the conductive bar (4) is disposed adjacent to the first side wall (101), and the first side wall (101) is provided with the heat dissipating fins.
  5. 5. The heat sink according to claim 4, further comprising a heat sink fin (5), the heat sink fin (5) being provided on top of the potting chamber (11), the heat sink fin (5) being provided with heat sink fins (51) on top of the heat sink fin (5), the heat sink fins (51) forming a plurality of second air channels leading from the second side wall (102) to the third side wall (103), and/or the heat sink fins (51) forming a plurality of second air channels leading from the fourth side wall (104) to the third side wall (103).
  6. 6. The heat dissipating device according to claim 5, wherein the heat dissipating fin (51) comprises a plurality of fins comprising a first guiding portion (511) along a first direction and a second guiding portion (512) along a second direction, wherein the plurality of fins are arranged in an array to form a plurality of second air channels on top of the heat dissipating fin (5), wherein the first direction is a direction in which the first side wall (101) extends, and wherein the second direction is a direction in which the second side wall (102) extends.
  7. 7. The heat dissipating device according to claim 5, wherein a second windshield (52) is provided on top of the heat dissipating fin (51), the second windshield (52) partially shields the top of the second air duct, and the second windshield (52) is at least insulated between the heat dissipating fin (51) and the conductive strip (4).
  8. 8. A heat dissipating device according to claim 3, wherein the second side wall (102) and the fourth side wall (104) are each provided with a first heat dissipating fin (12) penetrating from the bottom of the heat dissipating housing (1) to the top of the heat dissipating housing (1), and the first windshields (3) are arranged in pairs, adjacent to the first heat dissipating fins (12) of the second side wall (102) and the fourth side wall (104), respectively; The first windshield (3) comprises a third guide part (31) parallel to the second side wall (102) and a fourth guide part (32) positioned at the top of the heat dissipation shell (1), the third guide part (31) is attached to the outer side of the first heat dissipation fin (12) and shields the first heat dissipation fin (12), and a first gap is reserved between the fourth guide part (32) and the top of the first heat dissipation fin (12).
  9. 9. The heat dissipating device according to claim 8, wherein a side of the fourth guiding portion (32) adjacent to the first side wall (101) and a side adjacent to the third side wall (103) are respectively provided with a burring portion (33), and the burring portion (33) is bent toward the heat dissipating housing (1) to at least partially block the first gap.
  10. 10. The heat sink according to claim 9, characterized in that a third air duct is provided in the first gap, which third air duct penetrates the flange parts (33) on opposite sides of the fourth guide part (32).
  11. 11. A heat sink according to claim 3, wherein the first side wall (101) is provided with a second heat sink fin (13) extending from the bottom to the top of the heat sink housing (1), a third wind shield (6) is arranged outside the first side wall (101), a fourth wind channel is formed between the third wind shield (6) and the second heat sink fin (13), and the depth of the fourth wind channel gradually decreases from the bottom to the top of the heat sink housing (1).
  12. 12. The heat sink according to claim 11, characterized in that the third damper (6) shields the bottom of the fourth air duct and opens the top of the fourth air duct.
  13. 13. The heat sink according to claim 12, characterized in that the ratio of the height D1 of the third wind shield (6) to the height D2 of the fourth wind tunnel satisfies 0.5 ∈d1/d2 ∈0.8.
  14. 14. The heat dissipating device according to claim 1, further comprising a switching plate (7), wherein the switching plate (7) has at least one through air outlet (71), the heat dissipating housing (1) and the fan (2) are respectively mounted on the upper and lower sides of the switching plate (7), and the air flow direction of the fan (2) corresponds to the air outlet (71).
  15. 15. The heat dissipation device according to claim 14, wherein the heat dissipation housing (1) is provided with cooling chambers (14) opposite to the potting chambers (11), the cooling chambers (14) are arranged at the bottom of the heat dissipation housing (1) and are not less than two, the cooling chambers (14) are in one-to-one correspondence with the air outlets (71) of the switching disc (7), and the fans (2) are arranged at the bottom of the switching disc (7) in one-to-one correspondence with the air outlets (71).
  16. 16. The heat dissipating device according to claim 1, wherein a supporting foot seat (8) is provided at the bottom of the fan (2), and an adjusting device is provided on the supporting foot seat (8) for adjusting the height of a supporting surface of the supporting foot seat (8) for supporting the fan (2).
  17. 17. The heat sink according to claim 16, characterized in that a protective screen (21) is arranged between the support foot (8) and the fan (2).
  18. 18. A capacitive assembly comprising the heat sink of any one of claims 1 to 17 and a capacitive core pack, the capacitive core pack being disposed in the potting chamber (11) of the heat sink.
  19. 19. The capacitive assembly according to claim 18, characterized in that the capacitive core package is fixed in the potting chamber (11) by potting with a potting compound.
  20. 20. A controller, comprising a controller housing, a power device, and the capacitive assembly of claim 18 or 19, wherein the capacitive assembly and the power device are electrically connected.

Description

Heat abstractor, electric capacity subassembly, controller and vehicle Technical Field The disclosure relates to the technical field of capacitors, in particular to a heat dissipation device, a capacitor assembly, a controller and a vehicle. Background The existing capacitor assembly is low in temperature resistance for a long time, so that the temperature of the conventional capacitor assembly is often required to be strictly controlled when the conventional capacitor assembly works, excessive heat is prevented from being transferred to the capacitor, the size of a connecting copper bar is increased, the temperature of the conventional capacitor assembly is strictly controlled, and the structural size, the weight and the outflow capacity of an assembly product are seriously limited. Disclosure of utility model The disclosure provides a heat abstractor, capacitor assembly, controller and vehicle, is favorable to promoting capacitor assembly's radiating effect. According to one aspect of the present disclosure, there is provided a heat dissipating device including: The heat dissipation shell is provided with a potting cavity, and at least one outer side wall of the heat dissipation shell is provided with heat dissipation fins extending from the bottom to the top of the heat dissipation shell; the fan is arranged at the bottom of the heat dissipation shell; the first windshield is arranged outside at least one outer side wall of the radiating shell, and a first air channel is formed between the first windshield and the radiating fins. In one exemplary embodiment of the present disclosure, the first air duct penetrates from the bottom of the heat dissipation case to the top of the heat dissipation case. In an exemplary embodiment of the disclosure, the outer side wall of the heat dissipation shell comprises a first side wall, a second side wall, a third side wall and a fourth side wall which are connected end to end in sequence, at least one of the first side wall and the third side wall is provided with a heat dissipation fin, and at least one of the second side wall and the fourth side wall is provided with a heat dissipation fin. In one exemplary embodiment of the disclosure, the potting chamber is configured to house a capacitive core package, the capacitive core package is provided with a conductive bar exposed at a top of the heat dissipating device, and the conductive bar is disposed adjacent to a first sidewall provided with heat dissipating fins. In an exemplary embodiment of the disclosure, the heat dissipating device further includes a heat dissipating fin disposed on top of the potting chamber, the heat dissipating fin is disposed on top of the heat dissipating fin, the heat dissipating fin forms a plurality of second air channels that are conducted from the second side wall to the third side wall, and/or the heat dissipating fin forms a plurality of second air channels that are conducted from the fourth side wall to the third side wall. In one exemplary embodiment of the disclosure, the heat dissipating fin includes a plurality of fins including a first guide portion along a first direction and a second guide portion along a second direction, the plurality of fins being arranged in an array to form a plurality of second air channels on top of the heat dissipating fin, wherein the first direction is a direction in which the first sidewall extends, and the second direction is a direction in which the second sidewall extends. In one exemplary embodiment of the disclosure, a second windshield is provided on top of the heat dissipating fin, the second windshield partially shielding the top of the second air duct, the second windshield being at least insulatively disposed between the heat dissipating fin and the conductive row. In an exemplary embodiment of the disclosure, the second side wall and the fourth side wall are respectively provided with first radiating fins penetrating from the bottom of the radiating shell to the top of the radiating shell, and the first windshields are arranged in pairs and are respectively adjacent to the first radiating fins of the second side wall and the fourth side wall; The first windshield comprises a third guide part parallel to the second side wall and a fourth guide part positioned at the top of the heat dissipation shell, wherein the third guide part is attached to the outer side of the first heat dissipation fin and shields the first heat dissipation fin, and a first gap is formed between the fourth guide part and the top of the first heat dissipation fin. In an exemplary embodiment of the present disclosure, a side of the fourth guide portion adjacent to the first sidewall and a side adjacent to the third sidewall are respectively provided with a burring portion bent toward the direction of the heat dissipation case to at least partially block the first gap. In one exemplary embodiment of the present disclosure, a third air duct is provided in the first gap, t