Heat dissipation copper bar and relay with same

Abstract

The utility model discloses a heat dissipation copper bar and a relay with the same, and relates to the field of relays, the heat dissipation copper bar comprises a leading-out sheet main body, one end of the leading-out sheet main body is provided with a leading-out pin, and the heat dissipation copper bar is characterized in that one end of the leading-out sheet main body far away from the leading-out pin is provided with a heat dissipation piece; the heat dissipation piece comprises a connecting piece connected with the leading-out piece body and a heat dissipation piece arranged on the connecting piece, according to the heat dissipation copper bar, the connecting piece is connected with the end of the leading-out piece body, the contact area is effectively increased, the heat dissipation effect is effectively improved, meanwhile, the heat dissipation piece can conduct out heat generated by a relay contact, and the heat dissipation efficiency is improved. In addition, the heat dissipation piece and the lead-out pin are arranged at the two ends of the contact respectively, the upper end heat dissipation piece and the lower end heat dissipation piece are oppositely arranged, and the heat dissipation effect is further improved. Therefore, the temperature rise of the relay using the heat dissipation copper bar can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of relay, more specifically, relate to a heat dissipation copper bar and the relay with the copper bar. BACKGROUND

[0002] With the rapid development of solar photovoltaic industry, the relay for solar photovoltaic inverter is also put forward higher request, especially to the relay load is put forward higher request. The installation position of photovoltaic is from desert to ocean, high latitude to low latitude, all kinds of all have, therefore to the relay, the relay needs to bear the large current and is the sealed type. Thus it needs the relay temperature rise to be low enough.

[0003] In summary, how to reduce the relay temperature rise, is the problem that the present technical personnel in the field urgently solves. CONTENT

[0004] Therefore, the utility model discloses the purpose is to provide a heat dissipation copper bar and the relay with the copper bar, effectively promote the heat dissipation effect of copper bar, thereby effectively reduce the relay temperature rise.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A heat dissipation copper bar and the relay with the copper bar, including the lead-out sheet main body, the one end of lead-out sheet main body is provided with the lead-out foot, the one end of lead-out sheet main body away from the lead-out foot is provided with the heat dissipation piece;

[0007] The heat dissipation piece includes the connecting sheet connected with the lead-out sheet main body and the heat dissipation sheet set on the connecting sheet.

[0008] Preferably, the lead-out sheet main body is U-shaped structure, including the opposite parallelly arranged inner lead-out sheet, the outer lead-out sheet and the crosspiece connecting section connected between the inner lead-out sheet and the outer lead-out sheet.

[0009] Preferably, the lead-out sheet main body includes the inner lead-out sheet and the outer lead-out sheet, the end of the inner lead-out sheet away from the lead-out foot is provided with the second connecting section, the end of the outer lead-out sheet away from the lead-out foot is provided with the first connecting section;

[0010] The outer lead-out sheet and the first connecting section are provided with the bending section between, so that the outer lead-out sheet and the first connecting section are disposed in dislocation, and the first connecting section and the second connecting section are fixedly connected.

[0011] Preferably, the thickness of the first connecting section is less than the thickness of the end of the outer lead-out sheet close to the lead-out foot, and the thickness of the second connecting section is less than the thickness of the end of the inner lead-out sheet close to the lead-out foot.

[0012] The combined thickness of the first connecting section and the second connecting section at the connection is equal to the thickness of the inner lead-out sheet near one end of the lead-out foot.

[0013] Preferably, the heat dissipation piece further comprises a foot arranged on the connecting sheet and opposite to the direction of the heat dissipation sheet, and a gap is formed at the connection of the first connecting section and the second connecting section near the connecting sheet, and the foot is arranged in the gap.

[0014] Preferably, the heat dissipation sheet comprises a first heat dissipation sheet and a second heat dissipation sheet, and the first heat dissipation sheet and the second heat dissipation sheet are arranged in a staggered manner with the foot, and the first heat dissipation sheet, the second heat dissipation sheet and the connecting sheet are in a U-shaped structure.

[0015] Preferably, the foot comprises a first foot and a second foot.

[0016] The first foot, the connecting sheet and the first heat dissipation sheet are integrally formed, and the second foot and the second heat dissipation sheet are integrally formed.

[0017] A first accommodation portion is formed on one side of the connecting sheet, the second foot is arranged in the first accommodation portion, and one end of the second heat dissipation sheet abuts against the connecting sheet.

[0018] Preferably, a plurality of heat dissipation teeth are arranged at the end of the heat dissipation sheet away from the connecting sheet.

[0019] Preferably, the heat dissipation teeth are connected to each other.

[0020] A relay comprising the heat dissipation copper bar as claimed in any one of the preceding claims, further comprising a base and an upper cover arranged on the base, a plurality of mounting grooves are formed in the base, and the heat dissipation copper bar is arranged in each mounting groove, the lead-out foot is arranged outside the base, and the heat dissipation sheet is arranged outside the upper cover.

[0021] The heat dissipation copper bar provided by the application is connected between the connecting sheet and the main end of the lead-out sheet, effectively increasing the contact area and effectively improving the heat dissipation effect, and the heat dissipation sheet can guide the heat generated by the relay contact out, making the heat transfer path more reasonable, and the heat dissipation piece and the lead-out foot are arranged at the two ends of the contact, respectively, so that the upper end heat dissipation and the lower end heat dissipation are arranged opposite to each other, further improving the heat dissipation effect. Thus, the relay using the heat dissipation copper bar can effectively reduce the temperature rise of the relay. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only constitute the embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of the provided drawings.

[0023] Figure 1 Structure schematic view of one embodiment of the heat dissipation copper bar in the present embodiment;

[0024] Figure 2 Structure schematic view of another embodiment of the heat dissipation copper bar in the present embodiment;

[0025] Figure 3 Side view of another embodiment of the heat dissipation copper bar in the present embodiment;

[0026] Figure 4 Structure schematic view of the first heat dissipation fin in another embodiment of the heat dissipation copper bar in the present embodiment;

[0027] Figure 5 Structure schematic view of the second heat dissipation fin in another embodiment of the heat dissipation copper bar in the present embodiment;

[0028] Figure 6 Structure schematic view of the heat dissipation copper bar assembled in the relay in the present embodiment;

[0029] Figure 7 Explosion schematic view of the heat dissipation copper bar assembled in the relay in the present embodiment.

[0030] Figures 1-7 In the drawings, the reference signs include:

[0031] 1, lead-out piece main body; 101, inner lead-out piece; 102, outer lead-out piece; 103, lead-out leg; 104, crosspiece connecting section; 105, second connecting section; 106, first connecting section; 107, gap;

[0032] 3, heat dissipation piece; 31, connecting piece; 32, heat dissipation fin; 321, first heat dissipation fin; 322, second heat dissipation fin; 33, heat dissipation tooth; 341, first supporting leg; 342, second supporting leg; 351, first accommodating portion; 352, second accommodating portion;

[0033] 4, base; 5, contact; 7, upper cover. DETAILED DESCRIPTION

[0034] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0035] Unless otherwise defined, technical terms or scientific terms used in the present application are understood to have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms "first", "second", and similar terms used in the present application do not denote any order, quantity, or importance. The terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections or couplings, but can include electrical connections or couplings, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positions, and when the absolute positions of the described objects are changed, the relative positions can also be changed accordingly. The embodiments of the present application disclose a heat dissipation copper bar and a relay having the copper bar.

[0036] The core of the present application is to provide a heat dissipation copper bar and a relay having the copper bar.

[0037] Please refer to Figures 1 to 5 .

[0038] The heat dissipation copper bar provided by the present application comprises an outgoing sheet body 1, one end of the outgoing sheet body 1 is provided with an outgoing pin 103, and the end of the outgoing sheet body 1 away from the outgoing pin is provided with a heat dissipation piece 3. The heat dissipation piece 3 comprises a connecting piece 31 connected with the outgoing sheet body 1 and a heat dissipation fin 32 arranged on the connecting piece 31.

[0039] Specifically, the heat dissipation copper bar comprises an outgoing sheet body 1, which exists in the form of left and right outgoing sheets. One end of each outgoing sheet body 1 is provided with an outgoing pin 103 for mounting and connecting with components such as PCB. The end of the outgoing sheet body 1 away from the outgoing pin 103 is provided with a heat dissipation piece 3, which is designed to optimize the heat dissipation effect and effectively dissipate the heat generated by the contact 5 on the outgoing sheet body 1. The heat dissipation piece 3 comprises a connecting piece 31 closely connected with the outgoing sheet body 1 and a heat dissipation fin 32 arranged on the connecting piece 31.

[0040] The heat dissipation copper bar effectively solves the problem of high temperature rise of the relay in the prior art. In particular, in the application scenarios of high load and large current, such as the relay for a solar photovoltaic inverter, the heat dissipation copper bar can significantly reduce the temperature rise of the relay and improve the stability and service life of the relay. The connecting piece 31 is connected between the end portion of the lead-out piece body 1, effectively increases the contact area, effectively improves the heat dissipation effect, and the heat dissipation piece 32 can guide the heat generated by the contact 5 on the lead-out piece body 1 out, so that the heat transfer path is more reasonable, and the heat dissipation piece 32 and the lead-out foot 103 are arranged at both ends of the contact 5, so that the upper end heat dissipation and the lower end heat dissipation are arranged opposite to each other, and the heat dissipation effect is further improved. Therefore, the relay using the heat dissipation copper bar can effectively reduce the temperature rise of the relay.

[0041] The heat dissipation copper bar provided by the utility model will be described in more detail below in combination with the drawings and specific embodiments.

[0042] In one specific embodiment, with reference to Figure 1 The lead-out piece body 1 is in a U-shaped structure and comprises an inner lead-out piece 101, an outer lead-out piece 102 arranged in parallel with the inner lead-out piece 101, and a crosspiece connecting section 104 connected between the inner lead-out piece 101 and the outer lead-out piece 102.

[0043] Specifically, the heat dissipation piece 3 comprises a connecting piece 31 directly connected with the lead-out piece body 1, and the connecting piece 31 is matched with the crosspiece connecting section 104 in shape, so that the contact area is greatly increased and the effective heat transfer is facilitated. Not only is the heat transfer path from the inner lead-out piece 101 to the outer lead-out piece 102 optimized, but also the temperature of the inner lead-out piece is effectively reduced, and the overall heat dissipation effect is optimized.

[0044] On the basis of any one of the above embodiments, with reference to Figures 2 to 5 The lead-out piece body 1 comprises the inner lead-out piece 101 and the outer lead-out piece 102, the end portion of the inner lead-out piece 101 away from the lead-out foot 103 is provided with a second connecting section 105, and the end portion of the outer lead-out piece 102 away from the lead-out foot 103 is provided with a first connecting section 106. A bending section is arranged between the outer lead-out piece 102 and the first connecting section 106, so that the outer lead-out piece 102 and the first connecting section 106 are arranged in a staggered manner, and the first connecting section 106 is fixedly connected with the second connecting section 105.

[0045] Specifically, the inner lead-out sheet 101 and the outer lead-out sheet 102 are arranged on both sides, and the inner lead-out sheet 101 is a vertical structure and is provided with a second connecting section 105 at the upper end thereof, and the outer lead-out sheet 102 is a bent structure and is provided with a first connecting section 106 at the upper end thereof, and a horizontal bending part is integrally formed between the first connecting section 106 and the outer lead-out sheet 102, so that the first connecting section 106 and the second connecting section 105 are attached, and the inner lead-out sheet 101 and the outer lead-out sheet 102 are separated and parallel, so that the outer lead-out sheet 102 can dissipate heat. The first connecting section 106 and the second connecting section 105 can be fixed by riveting. The first connecting section 106 and the second connecting section 105 are in surface contact, which can effectively ensure the heat dissipation effect.

[0046] Optionally, the thickness of the first connecting section 106 is less than the thickness of the outer lead-out sheet 102 near one end of the lead-out foot 103, and the thickness of the second connecting section 105 is less than the thickness of the inner lead-out sheet 101 near one end of the lead-out foot 103, and the combined thickness of the connecting section 106 and the second connecting section 105 is equal to the thickness of the inner lead-out sheet 101 near one end of the lead-out foot 103.

[0047] In one specific embodiment provided in the present application, the heat dissipation piece 3 further comprises a foot arranged on the connecting sheet 31 and opposite to the direction of the heat dissipation sheet 32, and a gap 107 is formed at the connecting part of the first connecting section 106 and the second connecting section 105 near the connecting sheet 31, and the foot is arranged in the gap 107.

[0048] Specifically, the foot is arranged in the gap 107 to realize the detachable connection between the heat dissipation piece 3 and the lead-out sheet body 1, and at the same time, the foot realizes the installation of the heat dissipation piece 3 relative to the lead-out sheet body 1 due to the cancellation of the horizontal connecting section 104. At the same time, the first connecting section 106 and the second connecting section 105 are formed with a gap 107 at the connecting part near the connecting sheet 31, which utilizes the characteristics of the material during thermal expansion. When the heat dissipation copper bar is heated, the material will expand to a certain extent, and the existence of the gap 107 can accommodate this part of the expansion amount, avoiding the structural stress concentration and possible damage caused by thermal expansion. In addition, the gap 107 also provides space for the arrangement of the foot, so that the foot can be closely embedded therein, further enhancing the connection tightness between the heat dissipation piece 3 and the lead-out sheet body 1 and the heat dissipation effect. The shape and size of the foot can be optimized according to the actual application scene and heat dissipation requirements. For example, the foot can be in the shape of a fin, a column or other shapes to increase the heat dissipation area and improve the heat dissipation efficiency. At the same time, the number and distribution of the feet can also be adjusted according to the specific circumstances to achieve the best heat dissipation effect.

[0049] On the basis of any one of the above embodiments, with reference to Figures 2 to 5The heat dissipation fin 32 includes a first heat dissipation fin 321 and a second heat dissipation fin 322, both of which are arranged in a staggered manner with the leg. The first heat dissipation fin 321, the second heat dissipation fin 322, and the connecting piece 31 are in a U-shaped structure.

[0050] Specifically, the staggered arrangement of the first heat dissipation fin 321 and the second heat dissipation fin 322 ensures more uniform heat transfer between the fins, avoiding the accumulation of heat on certain fins. At the same time, the staggered arrangement can also increase the heat dissipation area and improve the heat dissipation efficiency. In addition, the first heat dissipation fin 321, the second heat dissipation fin 322, and the connecting piece 31 adopt a U-shaped structure design. The U-shaped structure not only increases the heat dissipation area but also provides more heat dissipation channels. When heat is transferred from the connecting piece 31 to the heat dissipation fins, the U-shaped structure can guide the heat to dissipate along both sides and the bottom of the heat dissipation fins at the same time, thereby speeding up the heat transfer speed. The U-shaped structure of the heat dissipation fin also has good structural stability and strength. This structure can effectively resist external stress and vibration, ensuring that the heat dissipation copper bar can maintain stable heat dissipation performance in high-load, high-current application scenarios.

[0051] On the basis of any one of the above embodiments, with reference to Figures 2 to 5 The leg includes a first leg 341 and a second leg 342. The first leg 341, the connecting piece 31, and the first heat dissipation fin 321 are integrally formed. The second leg 342 is integrally formed with the second heat dissipation fin 322. A first accommodation portion 351 is formed on one side of the connecting piece 31. The second leg 342 is arranged in the first accommodation portion 351, and one end of the second heat dissipation fin 322 abuts against the connecting piece 31.

[0052] Specifically, the foot is composed of two parts, the first foot 341 and the second foot 342, which are integrally formed with the first fin 321 and the second fin 322 respectively, effectively optimizing the heat dissipation path and improving the heat dissipation efficiency. The design of the first foot 341, the connecting piece 31 and the first fin 321 being integrally formed ensures the tightness of their connection and the efficiency of heat conduction. Since they are integrally formed, there are no additional connection points or joints, so the loss of heat during transmission can be minimized. The second foot 342 is integrally formed with the second fin 322, and the second foot 342 not only provides additional support and fixation for the second fin 322, but also transmits heat from the second fin 322 to the connecting piece 31 through its contact with the connecting piece 31, and then dissipates through other fins or heat dissipation paths. This design makes the heat transfer in the heat dissipation copper bar more efficient and uniform. In order to facilitate the cooperation of the first fin 321 and the second fin 322, a first accommodation portion 351 is provided on the connecting piece 31 for accommodating the second foot 342. In this way, the second foot 342 can be completely embedded in the first accommodation portion 351, and in order to facilitate the abutment of one end of the second fin 322 on the connecting piece 31, a second accommodation portion 352 is provided on one side of the second fin, which is used to accommodate the first foot 341. Not only makes the structure of the heat dissipation copper bar more compact and reasonable, but also avoids the reduction of heat dissipation efficiency caused by the interference between the second foot 342 and the connecting piece 31.

[0053] It should be noted that the shape and size of the first accommodation portion 351 can also be optimized according to the shape and size of the second foot 342 to ensure that they fit tightly and stably. At the same time, the position of the first accommodation portion 351 also needs to consider the overall layout and heat dissipation demand of the heat dissipation copper bar to ensure that heat can be smoothly transferred from the second fin 322 to the connecting piece 31 and dissipated through other heat dissipation paths.

[0054] On the basis of any one of the above embodiments, the heat dissipation fin 32 is provided with a plurality of heat dissipation teeth 33 at the end away from the connecting piece 31.

[0055] Specifically, the arrangement of the plurality of heat dissipation teeth 33 effectively increases the heat dissipation effect of the heat dissipation fin 32. The heat dissipation teeth 33 effectively increase the heat dissipation area, so that heat can be dissipated to the surrounding environment more quickly. At the same time, through the small channels between the heat dissipation teeth, the convection effect of air is enhanced, thereby improving the heat dissipation efficiency.

[0056] The shape and size of the heat dissipation teeth 33 can be optimized according to the actual application scenario and heat dissipation requirements. For example, the heat dissipation teeth 33 can be in the form of an elongated strip, a triangle, a rhombus, or other geometric shapes to increase the heat dissipation area and provide additional heat dissipation channels. At the same time, the number, distribution, and arrangement of the heat dissipation teeth 33 can also be adjusted according to specific circumstances to achieve the best heat dissipation effect. In addition, the design of the heat dissipation teeth 33 also needs to consider the direction and speed of air flow. In actual application, the direction and angle of the heat dissipation teeth 33 can be reasonably arranged, and the overall layout of the heat dissipation copper bar can be optimized to guide air flow and enhance the convective heat dissipation effect.

[0057] Further, each heat dissipation tooth 33 is connected to each other.

[0058] Specifically, each heat dissipation tooth 33 is connected to each other, not only enhancing the overall structural strength of the heat dissipation fin 32, but also making the heat transfer between the heat dissipation teeth more uniform and efficient. The interconnected heat dissipation teeth 33 form a continuous heat dissipation network, which can ensure that heat is quickly transferred from one end of the heat dissipation fin 32 to the other end and dissipated to the surrounding environment through the tiny channels of the heat dissipation teeth.

[0059] The relay provided by the utility model, including the heat dissipation copper bar of any one of above, still include base 4 and cover set up upper cover 7 on base 4, be equipped with multiple mounting slots in base 4, be equipped with heat dissipation copper bar in each mounting slot, lead out foot 103 is set up outside base 4, heat dissipation fin 32 is set up outside upper cover 7.

[0060] Reference Figures 1 to 7 , specifically, base 4 is as the main structure of relay, and multiple mounting slots are set up inside. The size and shape of these mounting slots are precisely designed to ensure that the heat dissipation copper bar can be tightly and stably installed therein. Each mounting slot is provided with a heat dissipation copper bar, and such a layout not only fully utilizes the internal space of base 4, but also ensures that the heat generated by the relay during operation can be quickly and effectively dissipated. The lead-out foot 103 is an important part of the relay connected to the external circuit, which is set through the outer wall of the base 4, so that the relay can be conveniently electrically connected with the power supply, load and other external elements. The heat dissipation fin 32 can exchange heat with the external environment through the opening part of the upper cover 7. The heat dissipation fin 32 is set through the outside of the upper cover 7, so that the heat generated by the relay during operation can be directly dissipated to the surrounding environment through the heat dissipation fin 32, thereby effectively reducing the internal temperature of the relay. In addition, this relay can also include other key components, which will not be described here. Since the above heat dissipation copper bar can effectively improve heat dissipation, the relay including the above heat dissipation copper bar should also have the functions and beneficial effects of the heat dissipation copper bar.

[0061] The various embodiments are described in the specification by way of progression, each building on the last to facilitate ease of understanding. The same or similar reference numerals are used in the drawings and description to refer to the same or like parts, components and operations throughout.

[0062] The above describes in detail the heat dissipation copper bar and the relay with the copper bar. The principle and implementation mode of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified in several ways. These improvements and modifications also fall within the protection scope of the present application.

Claims

1. A heat dissipation copper bar comprising a lead-out sheet body (1), one end of the lead-out sheet body (1) is provided with a lead-out pin (103), characterized in that, The heat dissipation piece (3) is arranged at one end of the lead-out piece body (1) away from the lead-out leg (103). The heat dissipation piece (3) comprises a connecting piece (31) connected with the lead-out piece body (1) and a heat dissipation fin (32) arranged on the connecting piece (31).

2. The heat dissipation copper bar according to claim 1, characterized in that, The lead-out piece body (1) is in a U-shaped structure and comprises an inner lead-out piece (101), an outer lead-out piece (102) arranged in parallel with the inner lead-out piece (101), and a crosspiece connecting segment (104) connected between the inner lead-out piece (101) and the outer lead-out piece (102).

3. The heat dissipation copper bar according to claim 1, characterized in that, The lead-out piece body (1) comprises an inner lead-out piece (101) and an outer lead-out piece (102), the end of the inner lead-out piece (101) away from the lead-out leg (103) is provided with a second connecting segment (105), and the end of the outer lead-out piece (102) away from the lead-out leg (103) is provided with a first connecting segment (106). A bending segment is arranged between the outer lead-out piece (102) and the first connecting segment (106) to make the outer lead-out piece (102) and the first connecting segment (106) arranged in a staggered manner, and the first connecting segment (106) is fixedly connected with the second connecting segment (105).

4. The heat dissipation copper bar according to claim 3, characterized in that, The thickness of the first connecting segment (106) is smaller than the thickness of the end of the outer lead-out piece (102) close to the lead-out leg (103), and the thickness of the second connecting segment (105) is smaller than the thickness of the end of the inner lead-out piece (101) close to the lead-out leg (103). The combined thickness of the connecting position of the first connecting segment (106) and the second connecting segment (105) is equal to the thickness of the end of the inner lead-out piece (101) close to the lead-out leg (103).

5. The heat dissipation copper bar according to claim 4, characterized in that, The heat dissipation piece (3) further comprises a supporting leg arranged on the connecting piece (31) and opposite to the heat dissipation fin (32) in direction, a gap (107) is formed at the connecting position of the first connecting segment (106) and the second connecting segment (105) close to the connecting piece (31), and the supporting leg is arranged in the gap (107).

6. The heat dissipation copper bar according to claim 5, characterized in that, The heat dissipation fin (32) comprises a first heat dissipation fin (321) and a second heat dissipation fin (322), the first heat dissipation fin (321) and the second heat dissipation fin (322) are arranged in a staggered manner with the supporting leg, and the first heat dissipation fin (321), the second heat dissipation fin (322) and the connecting piece (31) are in a U-shaped structure.

7. The heat dissipation copper bar according to claim 6, characterized in that, The supporting leg comprises a first supporting leg (341) and a second supporting leg (342). The first supporting leg (341), the connecting piece (31) and the first heat dissipation fin (321) are integrally formed, and the second supporting leg (342) and the second heat dissipation fin (322) are integrally formed. A first accommodation portion (351) is formed on one side of the connecting piece (31), the second supporting leg (342) is arranged in the first accommodation portion (351), and one end of the second heat dissipation fin (322) abuts against the connecting piece (31).

8. The heat dissipation copper bar according to any one of claims 1-7, characterized in that, Multiple heat dissipation teeth (33) are arranged at one end of the heat dissipation fin (32) away from the connecting piece (31).

9. The heat dissipation copper bar according to claim 8, characterized in that, Each of the heat dissipation fins (33) is connected to each other.

10. A relay characterized by comprising: The heat dissipation copper bar comprises a base (4) and an upper cover (7) arranged on the base (4), a plurality of mounting grooves are arranged in the base (4), the heat dissipation copper bar is arranged in each of the mounting grooves, the lead-out pin (103) is arranged outside the base (4), and the heat dissipation fin (32) is arranged outside the upper cover (7).

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