Relay and battery energy distribution unit

Abstract

The utility model relates to the technical field of batteries, in particular to a relay and a battery energy distribution unit. The relay comprises a relay body, a copper static contact piece and an aluminum static contact piece, the copper static contact piece is inserted in the relay body, and part of the copper static contact piece extends out of the relay body to form a connecting end. And the aluminum static contact piece is used for being connected with the aluminum busbar, the aluminum static contact piece is connected with the connecting end, the aluminum static contact piece is provided with an isolation part, and the isolation part surrounds the outside of the connecting end to isolate the connecting end from the external environment. According to the relay and the battery energy distribution unit provided by the invention, the possibility of electrochemical corrosion is reduced, and the current conduction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a relay and a battery energy distribution unit. BACKGROUND

[0002] The battery energy distribution unit (BDU) is an important component on the high-voltage loop of an electric vehicle, which controls the power-on and power-off process and the pre-charging process of the high-voltage loop. The BDU includes a relay and a busbar, and in order to reduce the cost, the busbar is generally made of aluminum material.

[0003] In the prior art, the relay has a static contact point, which is connected to the aluminum busbar through a bolt, and the relay can control the opening and closing of the circuit branched from the aluminum busbar.

[0004] However, the existing static contact point is made of copper material, and the contact surface between the aluminum busbar and the copper static contact point is easy to form an electrolyte in the air, thereby causing electrochemical corrosion and reducing the current conduction efficiency. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a relay and a battery energy distribution unit, which reduces the possibility of electrochemical corrosion and improves the current conduction efficiency.

[0006] In a first aspect, the present application provides a relay, which includes a relay body, a copper static contact piece and an aluminum static contact piece. The copper static contact piece is inserted into the relay body, and part of the copper static contact piece protrudes from the relay body to form a connection end.

[0007] The aluminum static contact piece is used to connect with the aluminum busbar, and the aluminum static contact piece is connected with the connection end. The aluminum static contact piece is provided with an isolation part, which surrounds the outside of the connection end to isolate the connection end from the external environment.

[0008] In a possible implementation manner, the relay provided by the present application is provided, and the isolation part abuts against the outer wall of the connection end.

[0009] In a possible implementation manner, the relay provided by the present application is provided, and the connection end has a first connecting part. The aluminum static contact piece is provided with a second connecting part, and the second connecting part is connected with the first connecting part (220).

[0010] In a possible implementation manner, the relay provided by the present application is provided, and one of the first connecting part and the second connecting part is a plug-in slot, and the other is a plug-in part which can be plugged into the plug-in slot.

[0011] In a possible implementation manner, the relay provided by the present application is provided, and one of the first connecting part and the second connecting part has a protrusion, and the other is provided with a limiting slot matched with the protrusion.

[0012] In a possible implementation, the relay provided by the present application has a prismatic protrusion.

[0013] In a possible implementation, the relay provided by the present application has a plug-in part including a first plug-in segment and a second plug-in segment symmetrically arranged, and a buffer gap between the first plug-in segment and the second plug-in segment.

[0014] In a possible implementation, the battery energy distribution unit provided by the present application has a third connecting part on the aluminum static contact of the relay, a fourth connecting part on the aluminum busbar, and the third connecting part connected to the fourth connecting part.

[0015] In a possible implementation, the battery energy distribution unit provided by the present application has one of the third connecting part and the fourth connecting part as a plug-in post, and the other as a plug-in hole matched with the plug-in post.

[0016] In a possible implementation, the battery energy distribution unit provided by the present application has one of the third connecting part and the fourth connecting part as a plug-in post, and the other as a plug-in hole matched with the plug-in post.

[0017] In a possible implementation, the battery energy distribution unit provided by the present application has the plug-in post with a first end and a second end opposite to each other, the second end located on a side of the aluminum static contact facing the fourth connecting part, and the size of the plug-in post gradually increasing from the first end to the second end.

[0018] In a possible implementation, the battery energy distribution unit provided by the present application has one of the third connecting part and the fourth connecting part as a plug-in post, and the other as a plug-in hole matched with the plug-in post.

[0019] In a possible implementation, the battery energy distribution unit provided by the present application has one of the third connecting part and the fourth connecting part as a plug-in post, and the other as a plug-in hole matched with the plug-in post.

[0020] The relay and the battery energy distribution unit provided by the present application have the relay body, the copper static contact and the aluminum static contact, the copper static contact inserted into the relay body, part of the copper static contact protruding from the relay body to form a connecting end, and the aluminum static contact connected to the connecting end. The aluminum static contact is used to be connected to the aluminum busbar, reducing the possibility of electrochemical corrosion between the aluminum static contact and the aluminum busbar. The aluminum static contact is provided with an isolation part surrounding the outside of the connecting end to isolate the connecting end from the external environment, reducing the possibility of electrochemical corrosion between the connecting end and the aluminum static contact. The relay and the battery energy distribution unit provided by the present application reduce the possibility of electrochemical corrosion and improve the current conduction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0022] Figure 1 The structural schematic diagram of the relay provided in the embodiments of the present application is shown in the figure.

[0023] Figure 2 The structural schematic diagram of the battery energy distribution unit provided in the embodiments of the present application is shown in the figure.

[0024] Figure 3 The structural schematic diagram of the battery energy distribution unit provided in the embodiments of the present application is shown in the figure. Figure 2 The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure.

[0025] Figure 4 The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 2 The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 1

[0026] Figure 5 The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 4

[0027] Figure 6 The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 4

[0028] Figure 7 The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 2 Figure 2

[0029] The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 8 Figure 7

[0030] The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 9 Figure 7

[0031] The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 10 Figure 2 Figure 3 The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure.

[0032] Figure 11 Figure 2 The structural schematic diagram of the copper static contact, the aluminum static contact and the aluminum busbar in the embodiments of the present application is shown in the figure. Figure 4

[0033] Explanation of the reference signs:

[0034] ​​​​​​​​​​100 - relay body

[0035] 200 - copper static contact; 210 - connecting end; 220 - first connecting part; 221 - protrusion; 222 - first insertion section; 223 - second insertion section;

[0036] 300 - aluminum static contact; 310 - second connecting part; 311 - limiting slot; 320 - isolation part; 330 - third connecting part; 331 - first end; 332 - second end; 340 - positioning part;

[0037] 400 - aluminum busbar; 410 - fourth connecting part; 420 - positioning hole.

[0038] The specific embodiments of the present application have been shown in the above-described drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application in any way, but to explain the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.

[0040] Secondly, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] Then, it should also be noted that in the description of the present application, the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0043] As the background art shows, generally, the busbar is made of aluminum material, first, the market price of aluminum material is generally lower than that of copper material, and aluminum material is easy to process and form, suitable for manufacturing busbars of various shapes and sizes, so using aluminum busbar can significantly reduce the production cost and difficulty of BDU, and improve the production efficiency. Second, the density of aluminum is much lower than that of copper, so under the same volume, the weight of the aluminum busbar is lighter, which helps to reduce the overall weight of the BDU and improve the energy efficiency and endurance of the vehicle. At the same time, the lightweight design also facilitates the installation and maintenance of the BDU. Third, aluminum material is easy to form a dense aluminum oxide protective film in the air, which has good corrosion resistance and helps to prolong the service life of the BDU and reduce the failure and maintenance cost caused by corrosion.

[0044] In the prior art, the relay generally includes a static contact, a coil and a moving contact, and the static contact, the coil and the moving contact are all made of copper. The copper static contact is connected with the aluminum busbar. When the coil of the relay is energized, the magnetic field generated attracts or pushes the copper moving contact, so that it contacts or separates from the copper static contact, thereby closing or opening the circuit, so that the relay can control the opening and closing of the circuit branched from the aluminum busbar.

[0045] However, the contact surface of the existing aluminum busbar and copper static contact is easy to form an electrolyte under the action of moisture, carbon dioxide and other impurities in the air, thereby causing electrochemical corrosion, increasing the contact resistance of the connection, and reducing the current conduction efficiency.

[0046] Therefore, the relay and the battery energy distribution unit provided by the present application reduce the possibility of electrochemical corrosion, improve the current conduction efficiency.

[0047] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the preferred embodiments of the present application. In the drawings, the same or similar notations represent the same or similar parts or parts having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0048] Referring to Figures 1 to 3 As shown in the drawings, the present application provides a relay, which comprises a relay body 100, a copper static contact 200 and an aluminum static contact 300. The copper static contact 200 is inserted into the relay body 100, and part of the copper static contact 200 protrudes from the relay body 100 to form a connecting end 210.

[0049] The aluminum static contact 300 is used to connect with an aluminum busbar 400. The aluminum static contact 300 is connected with the connecting end 210. An isolation part 320 is arranged on the aluminum static contact 300, which surrounds the outside of the connecting end 210 to isolate the connecting end 210 from the external environment.

[0050] In a specific implementation, the relay body 100 can comprise a shell and a coil and a moving contact arranged in the shell. The moving contact is located below the copper static contact 200. Both the coil and the moving contact are made of copper. When the coil is powered on, the moving contact is attracted by magnetic force and contacts the copper static contact 200, thereby closing the circuit. When the coil is powered off, the moving contact is separated from the copper static contact 200, thereby opening the circuit. Exemplarily, the shell can be made of ceramic material, or other materials. The embodiments of the present application do not make too many limitations on this.

[0051] It should be noted that, since the copper has good electrical conductivity, the copper static contact 200 contacts the copper moving contact, which can effectively conduct current, reduce resistance loss and improve current transmission efficiency. In addition, since the copper has high mechanical strength and wear resistance, the copper static contact 200 is not easy to deform or wear in frequent opening and closing operations, thereby prolonging the service life of the relay.

[0052] It should be further noted that, electrochemical corrosion usually occurs at the interface of different metals, which is caused by the potential difference formed by different metals in an electrolyte environment, leading to corrosion reaction. By arranging the aluminum static contact 300, which is used to connect the aluminum busbar 400, the material consistency of the connection part is ensured, which can reduce the potential difference and thus reduce the possibility of electrochemical corrosion.

[0053] Part of the copper static contact 200 protrudes from the relay body 100 to form a connecting end 210, which provides a connecting position for the aluminum static contact 300. In specific implementation, the connecting end 210 can be welded with the outer wall of the relay body 100, which improves the firmness of the connection between the copper static contact 200 and the relay body 100, can withstand mechanical vibration, impact and other external forces, reduces the risk of loosening or falling off, and ensures the stability of the relay under various operating conditions.

[0054] By providing the isolation part 320 on the aluminum static contact 300, the isolation part 320 surrounds the connecting end 210 on the copper static contact 200, avoiding the connecting end 210 from contacting the external environment, which can reduce the invasion of moisture, dust and other corrosive substances, and reduce the possibility of electrochemical corrosion between the connecting end 210 and the aluminum static contact 300.

[0055] It can be understood that, compared with the prior art, the static contact of the relay is connected with the aluminum busbar 400, which is easy to produce electrochemical corrosion and reduces the current conduction efficiency. The relay and the battery energy distribution unit provided by the present application, the relay is provided with a relay body 100, a copper static contact 200 and an aluminum static contact 300, the copper static contact 200 is inserted into the relay body 100, part of the copper static contact 200 protrudes from the relay body 100 to form a connecting end 210, and the aluminum static contact 300 is connected with the connecting end 210. The aluminum static contact 300 is used to be connected with the aluminum busbar 400, which reduces the possibility of electrochemical corrosion between the aluminum static contact 300 and the aluminum busbar 400. The isolation part 320 is provided on the aluminum static contact 300, and the isolation part 320 surrounds the outside of the connecting end 210 to isolate the connecting end 210 from the external environment, which reduces the possibility of electrochemical corrosion between the connecting end 210 and the aluminum static contact 300. The relay and the battery energy distribution unit provided by the present application reduce the possibility of electrochemical corrosion and improve the current conduction efficiency.

[0056] In some embodiments, referring to Figure 3 It is shown that the isolation part 320 abuts against the outer wall of the connecting end 210.

[0057] Specifically, the isolation part 320 abuts against the outer wall of the connecting end 210, that is, the isolation part 320 closely adheres to the outer wall of the connecting end 210, which can prevent moisture, dust and other corrosive substances from entering between the isolation part 320 and the connecting end 210, thereby reducing the possibility of electrochemical corrosion.

[0058] In some embodiments, referring to Figure 3 It is shown that the connecting end 210 has a first connecting part 220, and the aluminum static contact 300 is provided with a second connecting part 310, and the second connecting part 310 is connected with the first connecting part 220.

[0059] Specifically, the first connecting part 220 is arranged on the connecting end 210, and the second connecting part 310 is arranged on the aluminum static contact 300, and the second connecting part 310 is connected with the first connecting part 220, thereby improving the stability and reliability of the connection between the aluminum static contact 300 and the copper static contact 200, preventing loosening during use, and enabling the aluminum static contact 300 to achieve good electrical connection with the copper static contact 200. For example, the first connecting part 220 and the second connecting part 310 can be inserted or clamped, or other connection methods can be used, and the embodiments of the present application do not make too many limitations.

[0060] In some embodiments, referring to Figures 4 to 9 , one of the first connecting part 220 and the second connecting part 310 is an insertion slot, and the other is an insertion part that can be inserted into the insertion slot.

[0061] It can be understood that the insertion of the first connecting part 220 and the second connecting part 310 provides good mechanical stability, can withstand vibration and mechanical stress, and prevents loosening between the aluminum static contact 300 and the copper static contact 200.

[0062] It should be noted that the close contact between the insertion part and the insertion slot ensures good electrical conductivity, reduces contact resistance, and improves the current transmission efficiency between the aluminum static contact 300 and the copper static contact 200.

[0063] For example, referring to Figures 4 to 6 , the first connecting part 220 can be an insertion slot, and the second connecting part 310 can be an insertion part; referring to Figures 7 to 9 , the second connecting part 310 can be an insertion slot, and the first connecting part 220 can be an insertion part, and the embodiments of the present application do not make too many limitations.

[0064] In some embodiments, referring to Figures 4 to 9 , one of the first connecting part 220 and the second connecting part 310 has a protrusion 221, and the other has a limiting slot 311 matched with the protrusion 221.

[0065] Specifically, the protrusion 221 is clamped in the limiting slot 311, which can prevent the first connecting part 220 and the second connecting part 310 from loosening or coming off when subjected to vibration or external force, thereby improving the reliability and stability of the connection between the first connecting part 220 and the second connecting part 310.

[0066] For example, referring to Figures 4 to 9As shown, the first connecting part 220 can be provided with a protrusion 221, and the second connecting part 310 can be provided with a limiting groove 311 matched with the protrusion 221; the second connecting part 310 can be provided with a protrusion 221 (not shown in the figure), and the first connecting part 220 can be provided with a limiting groove 311 matched with the protrusion 221, and the present application embodiment does not make too many limitations on this.

[0067] In some embodiments, referring to Figure 4 As shown, the protrusion is in the shape of a prism.

[0068] It should be noted that the protrusion in the shape of a prism can prevent the first connecting part 220 and the second connecting part 310 from rotating or sliding, increase the firmness of the connection between the first connecting part 220 and the second connecting part 310, and reduce the possibility of loosening under vibration or impact conditions.

[0069] In some embodiments, referring to Figure 7 and Figure 8 As shown, the plug-in part includes a first plug-in section 222 and a second plug-in section 223 arranged symmetrically, and has a buffer gap between the first plug-in section 222 and the second plug-in section 223.

[0070] It should be noted that the buffer gap between the first plug-in section 222 and the second plug-in section 223 allows the first plug-in section 222 and the second plug-in section 223 to have a certain buffer space during the insertion process, reduces the friction between the first plug-in section 222, the second plug-in section 223 and the slot wall of the plug-in slot, thereby reducing the insertion force and making the insertion process smoother.

[0071] It should also be noted that the first plug-in section 222 and the second plug-in section 223 are arranged symmetrically to make the first plug-in section 222 and the second plug-in section 223 bear force evenly during the insertion process, reducing the inclination or instability caused by unilateral force.

[0072] Referring to Figure 3 and Figure 4 The present application also provides a battery energy distribution unit, which includes a distribution unit body and a relay arranged on the distribution unit body, and the distribution unit body includes an aluminum busbar 400.

[0073] It should be noted that aluminum has high conductivity and lightweight characteristics, and the aluminum busbar 400 is used to transmit current between the battery and other electrical components, which can achieve efficient conduction. The aluminum stationary contact 300 on the relay is connected with the aluminum busbar 400, and the potential difference between the same materials is small, which can reduce the possibility of electrochemical corrosion.

[0074] In some embodiments, referring to Figure 3 and Figure 4As shown, the third connecting part 330 is arranged on the aluminum static contact 300, and the fourth connecting part 410 is arranged on the aluminum busbar 400, and the third connecting part 330 is connected with the fourth connecting part 410.

[0075] By arranging the third connecting part 330 on the aluminum static contact 300 and the fourth connecting part 410 on the aluminum busbar 400, and connecting the third connecting part 330 with the fourth connecting part 410, the electrical connection between the aluminum static contact 300 and the aluminum busbar 400 can be realized, and the current can be effectively transmitted from the relay to the busbar, ensuring the efficient distribution of electric energy in the battery energy distribution unit.

[0076] The third connecting part 330 is connected with the fourth connecting part 410, ensuring the stable connection between the aluminum static contact 300 and the aluminum busbar 400, so that it can withstand vibration and mechanical stress, and prevent the aluminum static contact 300 and the aluminum busbar 400 from loosening or disconnecting. Exemplarily, the third connecting part 330 and the fourth connecting part 410 can be inserted, clamped, welded or riveted, or other connection methods can be used, and the embodiments of the present application do not make too many limitations.

[0077] In some embodiments, referring to Figure 4 and Figure 7 As shown, one of the third connecting part 330 and the fourth connecting part 410 is a plug-in column, and the other is a plug-in hole matched with the plug-in column.

[0078] It can be understood that the plug-in column inserted into the plug-in hole provides good mechanical stability, can withstand vibration and mechanical stress, and improves the connection reliability between the third connecting part 330 and the fourth connecting part 410.

[0079] It should be noted that the close contact between the plug-in column and the plug-in hole ensures good electrical conductivity, reduces the contact resistance, and improves the current transmission efficiency.

[0080] Exemplarily, referring to Figure 4 and Figure 7 As shown, the third connecting part 330 can be a plug-in column, and the fourth connecting part 410 can be a plug-in hole; the fourth connecting part 410 can be a plug-in column (not shown in the figure), and the third connecting part 330 can be a plug-in hole, and the embodiments of the present application do not make too many limitations.

[0081] It should be noted that the plug-in column can be cylindrical, conical, cuboid or other shapes, and the embodiments of the present application do not make too many limitations.

[0082] In some embodiments, referring to Figure 6As shown, the plug-in post has opposite first and second ends 331 and 332, the second end 332 is located on the side of the aluminum static contact 300 facing the fourth connecting part 410, and the size of the plug-in post gradually increases from the first end 331 to the second end 332.

[0083] It can be understood that, as the size of the plug-in post gradually increases, a gradually increasing mechanical locking force can be provided when it is inserted into the plug-in hole, which helps to ensure the stability of the plug-in post in the plug-in hole, prevent loosening, and improve the reliability of the battery energy distribution unit. In specific implementation, the plug-in post and the plug-in hole can adopt a riveting connection mode.

[0084] In some embodiments, referring to Figure 10 and Figure 11 As shown, one of the third connecting part 330 and the fourth connecting part 410 is a clamping groove, and the other is a clamping part that can be clamped in the clamping groove.

[0085] Specifically, the design of the clamping groove and the clamping part provides a stable mechanical connection and improves the reliability of the connection between the third connecting part 330 and the fourth connecting part 410. The clamping design is convenient to operate, can save time and labor cost, and improves the installation efficiency.

[0086] Exemplarily, referring to Figure 10 As shown, the fourth connecting part 410 can be a clamping groove, and the third connecting part 330 can be a clamping part; referring to Figure 11 As shown, the third connecting part 330 can be a clamping groove, and the fourth connecting part 410 can be a clamping part, and the embodiments of the present application do not make too many limitations.

[0087] In some embodiments, referring to Figure 7 As shown, one of the aluminum static contact 300 and the aluminum busbar 400 has a positioning part 340, and the other has a positioning hole 420, and the positioning part 340 is inserted into the positioning hole 420.

[0088] It can be understood that, by setting the positioning part 340 and the positioning hole 420, the aluminum static contact 300 can be accurately aligned to the specified position of the aluminum busbar 400 during installation, avoiding installation errors and improving assembly accuracy. Exemplarily, the positioning part 340 can be a positioning post, or other positioning structures, and the embodiments of the present application do not make too many limitations.

[0089] It should be noted that the positioning part 340 and the positioning hole 420 serve as a guide during installation, making installation simpler and faster and improving installation efficiency.

[0090] Exemplarily, referring to Figure 7As shown, the aluminum static contact 300 can be provided with a positioning portion 340, and the aluminum bus bar 400 can be provided with a positioning hole 420; the aluminum bus bar 400 can be provided with a positioning portion 340 (not shown in the figure), and the aluminum static contact 300 can be provided with a positioning hole 420, and the embodiments of the present application do not make too many limitations thereon.

[0091] Those skilled in the art can understand that the relay and battery energy distribution unit provided by the present application, the relay is provided with the relay body 100, the copper static contact 200 and the aluminum static contact 300, the copper static contact 200 is inserted in the relay body 100, part of the copper static contact 200 is out of the relay body 100 to form the connecting end 210, and the aluminum static contact 300 is connected with the connecting end 210. The aluminum static contact 300 is used for connecting with the aluminum bus bar 400, which reduces the possibility of electrochemical corrosion between the aluminum static contact 300 and the aluminum bus bar 400. The aluminum static contact 300 is provided with the isolation portion 320, which surrounds the outside of the connecting end 210 to isolate the connecting end 210 from the external environment, thereby reducing the possibility of electrochemical corrosion between the connecting end 210 and the aluminum static contact 300. The relay and battery energy distribution unit provided by the present application reduces the possibility of electrochemical corrosion and improves the current conduction efficiency.

[0092] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] It can be understood that the various numbers involved in the embodiments of the present application are only for the convenience of differentiation, and are not used to limit the scope of the embodiments of the present application.

[0094] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

Claims

1. A relay characterized by comprising: The relay includes: a relay body (100); a copper static contact (200) inserted in the relay body (100), part of the copper static contact (200) extending out of the relay body (100) to form a connecting end (210); an aluminum static contact (300) for connecting with an aluminum busbar (400), the aluminum static contact (300) being connected with the connecting end (210), and the aluminum static contact (300) being provided with an isolation part (320) surrounding the outside of the connecting end (210) to isolate the connecting end (210) from the external environment.

2. The relay according to claim 1, characterized in that The isolation part (320) abuts against the outer wall of the connecting end (210).

3. The relay according to claim 1 or 2, characterized in that The connecting end (210) has a first connecting part (220), and the aluminum static contact (300) is provided with a second connecting part (310), and the second connecting part (310) is connected with the first connecting part (220).

4. The relay according to claim 3, characterized in that One of the first connecting part (220) and the second connecting part (310) is a plug-in groove, and the other is a plug-in part that can be plugged into the plug-in groove.

5. The relay of claim 4, wherein One of the first connecting part (220) and the second connecting part (310) has a protrusion (221), and the other is provided with a limiting slot (311) matched with the protrusion (221).

6. The relay of claim 5, wherein The protrusion (221) is in the shape of a prism.

7. The relay of claim 4, wherein The plug-in part includes a first plug-in segment (222) and a second plug-in segment (223) symmetrically arranged, and the first plug-in segment (222) and the second plug-in segment (223) have a buffer gap therebetween.

8. A battery energy distribution unit, characterized by The relay includes a distribution unit body and the relay according to any one of claims 1 to 7 arranged on the distribution unit body, and the distribution unit body includes an aluminum busbar (400).

9. The battery energy distribution unit of claim 8, wherein, The aluminum static contact (300) of the relay is provided with a third connecting part (330), and the aluminum busbar (400) has a fourth connecting part (410), and the third connecting part (330) is connected with the fourth connecting part (410).

10. The battery energy distribution unit of claim 9, wherein, One of the third connecting part (330) and the fourth connecting part (410) is a plug-in post, and the other is a plug-in hole matched with the plug-in post.

11. The battery energy distribution unit of claim 10, wherein, The plug-in post has opposite first and second ends (331) and (332), the second end (332) is located on the side of the aluminum static contact (300) facing the fourth connecting part (410), and the size of the plug-in post gradually increases from the first end (331) to the second end (332).

12. The battery energy distribution unit of claim 9, wherein, One of the third connecting part (330) and the fourth connecting part (410) is a clamping groove, and the other is a clamping part that can be clamped in the clamping groove.

13. The battery energy distribution unit of claim 8, wherein, One of the aluminum static contact (300) and the aluminum busbar (400) has a positioning part (340), and the other is provided with a positioning hole (420), and the positioning part (340) is plugged into the positioning hole (420).

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