Cooling structure of switchgear and switchgear

Abstract

The cooling structure of the switch equipment comprises a conductive module and a cooling module, the conductive module comprises at least one conductive unit, the conductive unit comprises an arc extinguish chamber, a moving contact and a static contact, the moving contact and the static contact are matched with each other, one side of the arc extinguish chamber is an arc inlet side close to the moving contact and the static contact, and the other side of the arc extinguish chamber is an air outlet side far away from the moving contact and the static contact. The cooling module comprises a cooling chamber corresponding to the conductive unit, the cooling chamber is provided with a cooling flow channel, the cooling flow channel is provided with a communication port for refrigerant inflow and an outlet for refrigerant outflow, and the direction from the arc inlet side to the air outlet side of the arc extinguish chamber is opposite to the direction from the communication port to the outlet of the cooling flow channel. The switchgear includes a cooling structure. The cooling structure of the switch equipment and the switch equipment are used for cooling high-temperature and high-pressure gas generated in the arc extinguishing process of the arc extinguishing chamber and reducing the temperature of discharged gas, and the cooling effect is improved by arranging the flow direction of the refrigerant in the cooling flow channel and the flow direction of the high-temperature and high-pressure gas in the arc extinguishing chamber to be opposite and performing countercurrent flow heat exchange.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a cooling structure of a switch device and the switch device. Background Art

[0002] There are two types of existing switchgear: one is the vacuum type, in which the moving and static contacts are located in an inert gas atmosphere, which can effectively prevent arcing; the other is the air type, in which the moving and static contacts are located in an air environment, and an arc extinguishing chamber is provided in the switchgear to extinguish the arc generated by the moving and static contacts during the opening and closing process. For air-type switchgear, high-temperature and high-pressure gas is easily generated during the arc burning period. When this high-temperature and high-pressure gas is ejected, it is easy to damage other components, and the use safety is low. Summary of the invention

[0003] The utility model aims to overcome at least one defect of the prior art and provide a cooling structure of a switch device and a switch device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The cooling structure of the switch device includes a conductive module and a cooling module, wherein the conductive module includes at least one conductive unit, and the conductive unit includes an arc extinguishing chamber, a matching moving contact and a stationary contact, one side of the arc extinguishing chamber is an arc-inlet side close to the moving contact and the stationary contact, and the other side is an air outlet side away from the moving contact and the stationary contact, and the cooling module includes a cooling chamber corresponding to the conductive unit, and the cooling chamber is provided with a cooling channel, and the cooling channel has a connecting port for the inflow of refrigerant and an outlet for the outflow of refrigerant, and the direction from the arc-inlet side to the air outlet side of the arc extinguishing chamber is opposite to the direction from the connecting port to the outlet of the cooling channel.

[0006] Optionally, the cooling chamber is provided with a flow channel partition for dividing the cooling chamber into a buffer flow channel and the cooling flow channel, the buffer flow channel has an inlet for the refrigerant to flow into the cooling chamber, and the buffer flow channel and the cooling flow channel have a connecting port for the refrigerant to circulate.

[0007] Optionally, the inlet and the outlet are both arranged at the bottom of the cooling chamber.

[0008] Optionally, the inlet and outlet are staggered.

[0009] Optionally, one end of the flow channel partition is connected to the bottom wall of the cooling chamber, and the other end of the flow channel partition is spaced between the top wall of the cooling chamber and the bottom wall of the cooling chamber to form the cooling flow channel located above and the buffer flow channel located below, and the other end of the flow channel partition is also spaced from the side wall of the cooling chamber to form the connecting port.

[0010] Optionally, the flow channel baffle includes a vertical portion, a first horizontal portion, an inclined portion and a second horizontal portion connected in sequence, the vertical portion of the flow channel baffle is connected to the bottom wall of the cooling chamber and is located between the inlet and the outlet, the first horizontal portion is arranged in parallel and offset above the second horizontal portion, and the second horizontal portion is spaced from the side wall of the cooling chamber to form the connecting port.

[0011] Optionally, the cooling channel has two wall bodies that are opposite to each other up and down, and the cooling channel is provided with a plurality of fins on a side close to the connecting port, and the plurality of fins are located between the two opposite wall bodies of the cooling channel.

[0012] Optionally, the plurality of fins are horizontally spaced apart and arranged in sequence in the up-down direction.

[0013] Optionally, the multiple fins are vertically spaced and arranged in sequence in the horizontal direction, and a fin includes a fin closest to the connecting port, the top end of which has a flow gap with one of the upper and lower opposite walls of the cooling channel, and the bottom end is connected to the other wall. Then the top end of the adjacent fin is connected to one wall of the cooling channel, and the bottom end has a flow gap with the other wall of the cooling channel.

[0014] Optionally, the conductive module has two symmetrical conductive units; a middle partition is provided in the cooling module, and the middle partition separates the cooling module into two independent cooling chambers, and the two cooling chambers are symmetrical and are arranged one-to-one corresponding to the two conductive units.

[0015] Optionally, the cooling module is a U-shaped structure sleeved on the conductive module, and an inverted trapezoidal notch is provided in the middle of the tops of the two arms of the U-shaped structure.

[0016] Optionally, the arc extinguishing chamber is installed in a conductive module housing, and includes a plurality of arc extinguishing grids, which are sequentially arranged in the up and down directions, and an exhaust structure is provided at a position on the conductive module housing corresponding to the arc extinguishing chamber.

[0017] Optionally, the switch device is a vehicle switch device and also includes an electromagnetic module. The electromagnetic module drives the moving contact and the static contact of the conductive module to open or close through a transmission rod to realize the opening and closing of the switch device. The conductive module also includes a conductive module shell. The conductive unit is installed in the conductive module shell. The electromagnetic module includes a coil, a static iron core, and a moving iron core. The transmission rod is linked to the moving iron core and penetrates into the conductive module shell to connect with the moving contact. When the moving iron core moves under the action of the electromagnetic force of the coil, it drives the moving contact to move and cooperate with the static contact through the transmission rod.

[0018] Optionally, the conductive module has two symmetrical conductive units, a static contact is provided on the bottom surface of the static contacts of the two conductive units, the moving contacts of the two conductive units are in a bridge-shaped structure, one end is integrally connected, and a moving contact is provided on the top surface of each of the other ends, which is used to correspond to the static contacts of the static contacts of the two conductive units.

[0019] A switch device comprises a cooling structure of the switch device according to any one of the above technical solutions.

[0020] The cooling structure and switchgear of the utility model are used to cool the high-temperature and high-pressure gas generated in the arc extinguishing process of the arc extinguishing chamber, reduce the temperature of the gas exhaust, prevent damage to other components, and improve the safety of use. The flow direction of the refrigerant in the cooling flow channel is set to be opposite to the flow direction of the high-temperature and high-pressure gas in the arc extinguishing chamber, and countercurrent heat exchange is achieved to improve the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded view of the cooling structure of the switchgear of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the conductive module of the utility model;

[0023] Figure 3 It is an assembly diagram of the cooling module and the conductive module of the utility model;

[0024] Figure 4 It is a three-dimensional diagram of the cooling module of the utility model;

[0025] Figure 5 It is a bottom view of the cooling module of the utility model;

[0026] Figure 6 This is a view of the internal structure of a cooling module in Embodiment 1 of the present utility model;

[0027] Figure 7 This utility model Figure 6 AA′ cross section in FIG.

[0028] Figure 8 This is another view of the internal structure of the cooling module of the first embodiment of the utility model;

[0029] Fig. 9 This is a schematic diagram of the internal structure of the cooling module of the second embodiment of the utility model;

[0030] Cooling module 100; trapezoidal notch 111; avoidance gap 112; middle partition 120; cooling chamber top wall 131; cooling chamber bottom wall 132; cooling chamber side wall 133; cooling flow channel 140; outlet 141; connecting port 150; buffer flow channel 160; inlet 161; flow channel partition 170; upright portion 171; first horizontal portion 172; inclined portion 173; second horizontal portion 174; fin 180; flow gap 181; conductive module 200; conductive module housing 210; exhaust structure 211; arc extinguishing chamber 220; static contact 230; static contact 231; moving contact 240; moving contact 241; electromagnetic module 300; coil 310; static iron core 320; moving iron core 330; transmission rod 400. DETAILED DESCRIPTION

[0031] The cooling structure of the switchgear and the specific implementation of the switchgear of the utility model are further described below in conjunction with the embodiments given in the accompanying drawings. The cooling structure of the switchgear and the switchgear of the utility model are not limited to the description of the following embodiments.

[0032] like Figure 1-3 As shown, the switch device of this embodiment includes a cooling structure of the switch device. Figure 1-3 As shown, the cooling structure of the switchgear of this embodiment includes a conductive module 200 and a cooling module 100. The conductive module 200 includes at least one conductive unit, and the conductive unit includes an arc extinguishing chamber 220, a matching moving contact 240 and a stationary contact 230. One side of the arc extinguishing chamber 220 is an arc entry side close to the moving contact 240 and the stationary contact 230, and the other side is a gas outlet side away from the moving contact 240 and the stationary contact 230. An arc is generated during the opening and closing process of the moving contact 240 and the stationary contact 230. After the arc enters the arc extinguishing chamber 220 from the arc entry side, high-temperature and high-pressure gas is generated, and the high-temperature and high-pressure gas is discharged from the gas outlet side. Figure 6-9As shown, the cooling module 100 includes a cooling chamber corresponding to the conductive unit, the cooling chamber is provided with a cooling channel 140, the cooling channel 140 has a connecting port 150 for the inflow of refrigerant and an outlet 141 for the outflow of refrigerant, and the direction from the arc inlet side to the gas outlet side of the arc extinguishing chamber 220 (i.e., the flow direction of the high-temperature and high-pressure gas in the arc extinguishing chamber 220) is opposite to the direction from the connecting port 150 to the outlet 141 of the cooling channel 140 (i.e., the flow direction of the refrigerant in the cooling channel 140). The switch device of this embodiment can be a contactor, a circuit breaker, a contactor-type circuit breaker, etc. The refrigerant of this embodiment can be water, automobile coolant (automobile antifreeze), oil, air, etc. The refrigerant circulates in the cooling module 100, and the high-temperature and high-pressure gas is cooled by heat exchange, thereby reducing its temperature. The cooling structure of the switch device of this embodiment is used to cool the high-temperature and high-pressure gas generated during the arc extinguishing process in the arc extinguishing chamber 220, reduce the temperature of the gas exhaust, prevent damage to other components, and improve safety of use. By setting the flow direction of the refrigerant in the cooling channel 140 to be opposite to the flow direction of the high-temperature and high-pressure gas in the arc extinguishing chamber 220, countercurrent heat exchange is achieved to improve the cooling effect.

[0033] like Figure 6-9 As shown, the cooling chamber structure of this embodiment, the cooling chamber has a cooling chamber side wall 133, a cooling chamber top wall 131 and a cooling chamber bottom wall 132 arranged up and down, and the cooling chamber is provided with a flow channel partition 170 for dividing the cooling chamber into a buffer flow channel 160 and the cooling flow channel 140, the buffer flow channel 160 has an inlet 161 for the refrigerant to flow into the cooling chamber, and the buffer flow channel 160 and the cooling flow channel 140 have the connecting port 150 for the circulation of the refrigerant. The refrigerant enters the buffer flow channel 160 from the inlet 161, flows into the cooling flow channel 140 from the connecting port 150, and finally flows out from the outlet 141. The provision of the flow channel partition 170 enables the cooling chamber to add a buffer flow channel 160 for refrigerant buffer storage. The cooling chamber structure of this embodiment is provided with a flow channel partition 170 to divide the cooling chamber into a buffer flow channel 160 and a cooling flow channel 140. The connecting port 150 connects the buffer flow channel 160 and the cooling flow channel 140, and is the refrigerant inlet of the cooling flow channel 140. The inlet 161 is both the refrigerant inlet of the buffer flow channel 160 and the refrigerant inlet of the cooling chamber. Of course, as other embodiments, the flow channel partition 170, the buffer flow channel 160 and the inlet 161 may not be provided, that is, the entire cooling chamber is the cooling flow channel 140, and the connecting port 150 is provided on the wall of the cooling chamber to connect the inside and outside of the cooling chamber, and is located at the outlet side of the arc extinguishing chamber 220, and is both the refrigerant inlet of the cooling flow channel 140 and the refrigerant inlet of the cooling chamber.

[0034] Furthermore, one end of the flow channel baffle 170 is connected to the bottom wall 132 of the cooling chamber, and the other end of the flow channel baffle 170 is spaced between the top wall 131 of the cooling chamber and the bottom wall 132 of the cooling chamber, forming the cooling flow channel 140 located above and the buffer flow channel 160 located below, and the other end of the flow channel baffle 170 is also spaced from the side wall 133 of the cooling chamber to form the connecting port 150. The cooling flow channel 140 and the buffer flow channel 160 of this embodiment are distributed up and down, and of course, as other embodiments, the cooling flow channel 140 and the buffer flow channel 160 are distributed left and right or in other layout forms. The flow channel baffle 170 includes a vertical portion 171, a first horizontal portion 172, an inclined portion 173 and a second horizontal portion 174 connected in sequence. The vertical portion 171 of the flow channel baffle 170 is vertically connected to the bottom wall 132 of the cooling chamber and is located between the inlet 161 and the outlet 141. The first horizontal portion 172 is arranged above the second horizontal portion 174 in a parallel and offset manner. The second horizontal portion 174 is perpendicular to the cooling chamber side wall 133 and is spaced to form the communication port 150. The structural design of the flow channel baffle 170 makes the buffer flow channel 160 wide at the inlet and narrow at the outlet, and the cooling flow channel 140 is narrow at the inlet and wide at the outlet, which facilitates the fast inlet and slow outlet of the refrigerant and improves the cooling effect.

[0035] like Figure 4-5 As shown, the inlet 161 and the outlet 141 are both arranged at the bottom of the cooling chamber to prevent leakage from entering the arc extinguishing chamber 220. Optionally, the inlet 161 and the outlet 141 are staggeredly arranged on the bottom wall 132 of the cooling chamber, such as Figure 6 , 8 As shown in FIG. 9 , the inlet 161 is located between the connecting port 150 and the outlet 141 , and the inlet 161 is close to the outlet 141 and away from the connecting port 150 , which is beneficial to heat exchange and improves the cooling effect.

[0036] like Figure 6-9 As shown, the cooling channel 140 has two upper and lower opposite walls, which are the cooling chamber top wall 131 and the channel baffle 170. The cooling channel 140 is provided with a plurality of fins 180 on the side close to the connecting port 150, and the plurality of fins 180 are located between the two opposite walls of the cooling channel 140. The fins 180 are provided to improve the heat exchange efficiency between the refrigerant and the cooling chamber, thereby improving the cooling effect on the conductive unit.

[0037] like Figure 6-8 As shown, the layout structure of multiple fins 180 in the cooling module of the first embodiment, the multiple fins 180 are arranged horizontally at intervals and arranged in sequence in the vertical direction. The fins 180 of this embodiment can divide the cooling channel 140 into multiple small channels, and a stream of refrigerant is divided into multiple streams through the fins 180. The structure of the fins 180 is simple and easy to manufacture.

[0038] like Fig. 9 As shown, the layout structure of multiple fins 180 in the cooling module of implementation two, the multiple fins 180 are arranged vertically at intervals and arranged in sequence in the horizontal direction, and a fin 180 includes a fin 180 closest to the connecting port 150, the top end of which is connected to one of the upper and lower opposite walls (cooling chamber top wall 131 and channel baffle 170) of the cooling channel 140 with a flow gap 181, and the bottom end is connected to the other wall (channel baffle 170), then the top end of the adjacent fin 180 is connected to one wall (cooling chamber top wall 131) of the cooling channel 140, and the bottom end is connected to the other wall (channel baffle 170) of the cooling channel 140 with a flow gap 181. The refrigerant in the present embodiment flows through a wave-like path in the cooling channel 140. The layout structure design of the multiple fins 180 can, on the one hand, increase the contact time between the fins 180 and the refrigerant to improve the heat exchange efficiency. On the other hand, the outermost channel of the cooling channel 140 close to the connecting port 150 flows from bottom to top, and the innermost channel of the cooling channel 140 close to the outlet 141 flows from top to bottom, which is consistent with the heat generation characteristics of the arc extinguishing chamber 220 (the lower side of the arc extinguishing chamber 220 is more likely to generate heat) and can improve the heat exchange utilization rate of the channel.

[0039] like Figure 2 As shown, the conductive module 200 of this embodiment has two conductive units that are symmetrical on both sides; the cooling module 100 is provided with a middle partition 120, and the middle partition 120 divides the cooling module 100 into two independent cooling chambers that are not connected to each other. The two cooling chambers are symmetrical on both sides and are arranged one by one with the two conductive units. The two cooling chambers correspond to the arc extinguishing chambers 220 of the two conductive units respectively, and the structure is simple and symmetrical, so that the arc extinguishing chambers 220 can be cooled more effectively and fully.

[0040] like Figure 3-4 As shown, the cooling module 100 is a U-shaped structure, and the U-shaped structure is a hollow shell structure. Accordingly, the cooling chamber has a U-shaped cavity. The U-shaped structure surrounds and forms a slot for mounting the conductive module 200. The cooling module 100 is sleeved on the conductive module 200, and the cooling module 100 covers the conductive module 200 as a whole, which is convenient for installation and heat dissipation. At least the side surface ( Figure 4The inner side of the U-shaped structure is made of heat-conducting materials such as metal. An inverted trapezoidal notch 111 is provided in the middle of the top of the two arms of the U-shaped structure, and an avoidance notch 112 is provided in the middle of the connection between one arm of the U-shaped structure and the bottom. Correspondingly, the structure of the middle partition 343 is adapted to the avoidance notch 112. The cooling module 100 is in a concave shape as a whole, with a concave middle and functional areas concentrated on both sides, which fits the main heating element in the conductive module 200 (i.e., the arc extinguishing chamber 220 located on the left and right sides of the conductive module 200).

[0041] like Figure 1 As shown, the switch device of this embodiment is a vehicle switch device, and its structure is similar to the combination of a contactor and a circuit breaker, and also includes an electromagnetic module 300. The electromagnetic module 300 drives the moving contact 240 and the static contact 230 of the conductive module 200 to open or close through a transmission rod 400 to realize the opening and closing of the switch device. The conductive module 200 also includes a conductive module housing 210, and the conductive unit is installed in the conductive module housing 210. The electromagnetic module 300 includes a coil 310, a static iron core 320, and a moving iron core 330. The transmission rod 400 is linked to the moving iron core 330 and penetrates into the conductive module housing 210 to be connected with the moving contact 240. When the moving iron core 330 moves under the electromagnetic force of the coil 310, the transmission rod 400 drives the moving contact 240 to move and cooperate with the static contact 230. The avoidance gap 112 of the cooling module 100 is used to avoid the transmission rod 400. The conductive module 200 of this embodiment is provided with a conductive module housing 210 so that the conductive units can be assembled into a module, and multiple conductive units can be provided to be assembled into one module, and the cooling module 100 can cool the conductive module 200 by being sleeved on the conductive module housing 210. Of course, as other embodiments, the conductive module housing 210 may not be provided, and the cooling module 100 may be provided with a receiving groove that can at least accommodate the arc extinguishing chamber 220, or a receiving chamber that can accommodate the conductive unit is provided to replace the conductive module housing 210, so as to achieve cooling of the main heat generating body (arc extinguishing chamber 220) of the conductive module 200.

[0042] like Figure 2As shown, the conductive module 200 of this embodiment has two conductive units that are symmetrical on both sides, and a static contact 231 is provided on the bottom surface of the static contacts 230 of the two conductive units. The movable contacts 240 of the two conductive units are in a bridge-shaped structure, one end of which is integrally connected as a support portion, for example, it can be placed on a contact support, and a movable contact 241 is provided on the top surface of the other end, which is used to correspond to the static contacts 231 of the static contacts 230 of the two conductive units. When the coil 310 is energized, the moving iron core 330 and the static iron core 320 are attracted, the moving iron core 330 moves upward, and the transmission rod 400 moves upward synchronously, driving the moving contact 240 to move upward and close with the static contact 230, so as to realize the closing of the switch device; when the coil 310 is de-energized, the moving iron core 330 and the static iron core 320 are repelled, the moving iron core 330 moves downward, and the transmission rod 400 moves downward synchronously, driving the moving contact 240 to move downward and disconnect with the static contact 230, so as to realize the opening of the switch device.

[0043] like Figure 2 As shown, the arc extinguishing chamber 220 of this embodiment includes a plurality of arc extinguishing grids, and the plurality of arc extinguishing grids are sequentially arranged in the vertical direction, such as Figure 3 As shown, an exhaust structure 211 is provided on the conductive module housing 210 at a position corresponding to the arc extinguishing chamber 220. The exhaust structure 211 includes but is not limited to a plurality of slits, and may also be a plurality of circular holes or other structures.

[0044] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0045] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A cooling structure for a switchgear, comprising a conductive module (200) and a cooling module (100), wherein the conductive module (200) comprises at least one conductive unit, wherein the conductive unit comprises an arc extinguishing chamber (220), a matching moving contact (240) and a stationary contact (230), wherein one side of the arc extinguishing chamber (220) is an arc entry side close to the moving contact (240) and the stationary contact (230), and the other side is an air outlet side away from the moving contact (240) and the stationary contact (230), wherein: The cooling module (100) comprises a cooling chamber corresponding to the conductive unit, the cooling chamber is provided with a cooling channel (140), the cooling channel (140) has a connecting port (150) for the inflow of a cooling medium and an outlet (141) for the outflow of the cooling medium, and the direction from the arc inlet side to the gas outlet side of the arc extinguishing chamber (220) is opposite to the direction from the connecting port (150) to the outlet (141) of the cooling channel (140).

2. The cooling structure of the switchgear according to claim 1, characterized in that: The cooling chamber is provided with a flow channel partition (170) for dividing the cooling chamber into a buffer flow channel (160) and the cooling flow channel (140); the buffer flow channel (160) has an inlet (161) for the refrigerant to flow into the cooling chamber; and a connecting port (150) for the refrigerant to circulate is provided between the buffer flow channel (160) and the cooling flow channel (140).

3. The cooling structure of the switchgear according to claim 2, characterized in that: The inlet (161) and the outlet (141) are both arranged at the bottom of the cooling chamber.

4. The cooling structure of the switchgear according to claim 3, characterized in that: The inlet (161) and the outlet (141) are arranged in a staggered manner.

5. The cooling structure of the switchgear according to claim 2, characterized in that: One end of the flow channel baffle (170) is connected to the bottom wall (132) of the cooling chamber, and the other end of the flow channel baffle (170) is spaced between the top wall (131) and the bottom wall (132) of the cooling chamber to form the cooling flow channel (140) located above and the buffer flow channel (160) located below. The other end of the flow channel baffle (170) is also spaced from the side wall (133) of the cooling chamber to form the connecting port (150).

6. The cooling structure of the switchgear according to claim 5, characterized in that: The flow channel baffle (170) comprises a vertical portion (171), a first horizontal portion (172), an inclined portion (173) and a second horizontal portion (174) which are connected in sequence. The vertical portion (171) of the flow channel baffle (170) is connected to the bottom wall (132) of the cooling chamber and is located between the inlet (161) and the outlet (141). The first horizontal portion (172) is arranged above the second horizontal portion (174) in a parallel and offset manner. The second horizontal portion (174) is spaced apart from the side wall (133) of the cooling chamber to form the connecting port (150).

7. The cooling structure of the switchgear according to claim 1, characterized in that: The cooling channel (140) has two upper and lower opposite walls. The cooling channel (140) is provided with a plurality of fins (180) on the side close to the connecting port (150). The plurality of fins (180) are located between the two opposite walls of the cooling channel (140).

8. The cooling structure of the switchgear according to claim 7, characterized in that: The plurality of fins (180) are arranged horizontally at intervals and arranged in sequence in the up-down direction.

9. The cooling structure of the switchgear according to claim 7, characterized in that: The multiple fins (180) are arranged vertically and spaced apart, and are arranged in sequence in the horizontal direction. A fin (180) includes a fin (180) closest to the connecting port (150), the top end of which is connected to one of the upper and lower opposite walls of the cooling channel (140) with a flow gap (181), and the bottom end is connected to the other wall. The top end of the adjacent fin (180) is connected to one wall of the cooling channel (140), and the bottom end is connected to the other wall of the cooling channel (140) with a flow gap (181).

10. The cooling structure of the switchgear according to claim 1, characterized in that: The conductive module (200) has two symmetrical conductive units; a middle partition (120) is provided in the cooling module (100), and the middle partition (120) divides the cooling module (100) into two independent cooling chambers, and the two cooling chambers are symmetrical and are arranged in one-to-one correspondence with the two conductive units.

11. The cooling structure of the switchgear according to claim 1, characterized in that: The cooling module (100) is a U-shaped structure sleeved on the conductive module (200), and an inverted trapezoidal notch (111) is provided at the middle position of the top of the two arms of the U-shaped structure.

12. The cooling structure of the switchgear according to claim 1, characterized in that: The arc extinguishing chamber (220) is installed in a conductive module housing (210), and comprises a plurality of arc extinguishing grids, which are arranged in sequence in the up-down direction. An exhaust structure (211) is provided at a position on the conductive module housing (210) corresponding to the arc extinguishing chamber (220).

13. The cooling structure of the switchgear according to claim 1, characterized in that: The switch device is a vehicle switch device, and further comprises an electromagnetic module (300). The electromagnetic module (300) drives the movable contact (240) and the stationary contact (230) of the conductive module (200) to open or close through a transmission rod (400), thereby realizing the opening and closing of the switch device. The conductive module (200) further comprises a conductive module housing (210). The conductive unit is installed in the conductive module housing (210). The electromagnetic module (300) comprises a coil (310), a stationary iron core (320), and a movable iron core (330). The transmission rod (400) is linked to the movable iron core (330) and penetrates into the conductive module housing (210) to be connected with the movable contact (240). When the movable iron core (330) moves under the electromagnetic force of the coil (310), the movable contact (240) is driven by the transmission rod (400) to move and cooperate with the stationary contact (230).

14. The cooling structure of the switchgear according to claim 1, characterized in that: The conductive module (200) has two symmetrical conductive units, a static contact (231) is provided on the bottom surface of the static contacts (230) of the two conductive units, and the movable contacts (240) of the two conductive units are in a bridge-shaped structure, one end of which is integrally connected, and the other end of which is provided with a movable contact (241) on the top surface, respectively, for correspondingly cooperating with the static contacts (231) of the static contacts (230) of the two conductive units.

15. A switchgear, characterized in that: Comprising a cooling structure for a switch device according to any one of claims 1-14.

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